CN107204888B - Method and device for switching timeout time and communication equipment - Google Patents

Abstract

Under the condition that other communication equipment exists in a transmission link between first communication equipment and second communication equipment, the first communication equipment can switch long overtime time into short overtime time, the efficiency of link detection is improved, and then corresponding treatment can be timely carried out when the transmission link fails so as to reduce the cutoff time of the communication equipment. The method comprises the following steps: the first communication device determining whether a third communication device is present in a transmission link between the first communication device and the second communication device; when the first communication device determines that the third communication device exists in the transmission link, the first communication device switches the timeout time for detecting the transmission link from a first timeout time to a second timeout time, wherein the first timeout time is longer than the second timeout time.

Description

A method, apparatus and communication device for switching overtime

technical field

The present invention relates to the field of communication technologies, and more particularly, to a method, an apparatus and a communication device for switching a timeout time.

Background technique

Link Aggregation ("LA" for short) refers to a method of bundling a group of physical ports together as a logical interface to increase bandwidth. For related protocol standards, please refer to IEEE802.1AX. By establishing a Link Aggregation Group (LAG for short) between two communication devices, higher communication bandwidth and higher reliability can be provided, and this improvement does not require hardware upgrades, and Redundant protection is also provided for the communication of the two communication devices. Configure a LAG in Link Aggregation Control Protocol (LACP packet) mode between two communication devices. The timeout period is used to detect whether the reception of keepalive (Keepalive) packets has timed out to determine whether the link is normal. If the link is blocked, port switching is required to ensure that the communication device can transmit data normally. For example, there are currently two types of timeout modes for common LACP packets: long timeout period (90s) and short timeout period (3s), and manufacturers generally set the timeout period of communication equipment as long timeout period by default. If the transmission link fails, the communication device needs to wait for 90s to time out before it can know the transmission link failure, which leads to a prolonged link detection time and low efficiency, so that port switching cannot be performed in time, resulting in the interruption of data transmission by the communication device. Phenomenon.

SUMMARY OF THE INVENTION

The present application provides a method, an apparatus and a communication device for switching a timeout period. When it is determined that there are other devices between transmission links, the communication device can perform a timeout period switching, so as to shorten the delay of link detection and improve the link performance. detection efficiency.

In a first aspect, a method for switching a timeout period is provided. The method includes: the first communication device determines whether a third communication device exists in the transmission link between the first communication device and the second communication device; when the first communication device determines that the third communication device exists in the transmission link device, the first communication device switches the timeout period for detecting the transmission link from the first timeout period to the second timeout period, and the first timeout period is longer than the second timeout period.

When the first communication device determines that there is a third communication device between the transmission links, it can switch the timeout time, and dynamically adjust the timeout time as needed, which can shorten the delay of link detection and improve the efficiency of link detection, thereby When the link fails, port switching is performed in time to reduce the interruption time of the first communication device.

With reference to the first aspect, in a first possible implementation manner of the first aspect, before the first communication device determines whether a third communication device exists in the transmission link between the first communication device and the second communication device , the method further includes: the first communication device stops sending an optical signal after receiving a first link aggregation control protocol LACP message from the second communication device, where the first LACP message is used to trigger the first communication device to shut down an optical signal; the first communication device receives a second LACP packet from the second communication device, the second LACP packet carries first indication information, and the first indication information is used to indicate that the second communication device is in the transmission the physical state of the port when the port on the link detects the optical signal; the first communication device determines that there is a third communication device in the transmission link between the first communication device and the second communication device, including: the first communication device The device determines, according to the first indication information, that the third communication device exists in the transmission link between the first communication device and the second communication device.

The first communication device can determine whether there is a third communication device between the links by stopping sending the optical signal and combining with the first indication information. The physical state of the port may be used to indicate whether the port of the second communication device on the transmission link detects an optical signal. The method is simple and easy to operate and has good compatibility with the prior art.

Further, in combination with the first aspect or the above possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the first indication information is used to indicate that the second communication device is in the transmission chain The physical state of the port on the road.

The first indication information may indicate the port physical state of the port, where the port physical state may be the port physical state in which the optical signal is detected in the first possible implementation manner. An indication information confirms that the third communication device exists; the physical state of the port may also be a physical state of the port in which no optical signal is detected, and at this time, the first communication device can determine that the third communication device does not exist according to the first indication information . Using this method, it can be judged whether there are other communication devices between the two communication devices. The method can be simple to operate, and the method of judging whether there is a third communication device can be applied not only to time-out switching but also to other aspects.

In combination with the first aspect or in combination with the above possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the second LACP message includes a local end information type length value TLV data field, and the local end The information TLV data field carries the first indication information.

The first indication information may be borne in the existing TLV data field of the second LACP message, without adding a new TLV data field, and the method is simple and easy to operate.

In combination with the first aspect or the above possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the second LACP message includes a connection state TLV data field, and the connection state TLV data field carries the the first indication information.

The first indication information may also be carried in a new connection state TLV data field defined in the extension field of the LACP message. The second indication information can be flexibly carried in the TLV data field of the second LACP packet, so that the first communication device can obtain the first indication information.

In combination with the first aspect or the above possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the method further includes: the first communication device sending a third LACP to the second communication device message, the third LACP message carries second indication information, and the second indication information is used to instruct the second communication device to switch the time-out time for detecting the transmission link from the first time-out time to the second time-out time The timeout period, or the second state indication information is used to indicate that the third communication device exists between the transmission link of the first communication device and the second communication device, so that the second communication device can use the second communication device to follow the second indication The information switches the timeout period for detecting the transmission link from the first timeout mode to the second timeout mode.

After the first communication device switches the timeout time, it can send second indication information to the second communication device, and the content indicated by the second indication information is diversified, so that the second communication device can switch the time-out time according to the second indication information, thereby shortening the The second communication device detects the delay of the transmission link and improves the efficiency of the second communication device in detecting the transmission link.

Further, in combination with the first aspect or the above possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the first communication device sends a third LACP message to the second communication device. The method may further include: the first communication device sends a fourth LACP packet to the second communication device, where the fourth LACP packet is used to trigger the second communication device to turn off the optical signal; the first communication device Sending second indication information to the second communication device, where the second indication information is used to indicate the port physical state of the first communication device when the port on the transmission link detects an optical signal, so as to be used for the second communication The device switches the timeout period for detecting the transmission link from the first timeout period to the second timeout period according to the second indication information.

Both the first communication device and the second communication device can quickly detect the transmission link, so as to improve the efficiency of link detection, so that when the link fails, port switching can be performed in time to reduce the user's current interruption time.

Further, in combination with the first aspect or the above possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the first communication device will be used to detect the timeout time of the transmission link Before switching from the first timeout period to the second timeout period, the method may further include: the first communication device setting a second timeout period.

The first communication device may flexibly set the second timeout period as required, so as to facilitate the first communication device to detect the transmission link.

In a second aspect, a method for switching overtime is provided, the method comprising: a second communication device sending a first link aggregation control protocol LACP packet to a first communication device, where the first LACP packet is used to trigger the first The communication device turns off the optical signal; the second communication device sends a second LACP packet to the first communication device, where the second LACP packet carries first indication information, and the first indication information is used to indicate that the second communication device is in The physical state of the port when the port on the transmission link between the first communication device and the second communication device detects an optical signal, so that the first communication device sets the timeout time for detecting the transmission link by The first timeout period is switched to a second timeout period, and the first timeout period is longer than the second timeout period.

The second communication device may send the first LACP packet and the second LACP packet carrying the first indication information to the first communication device, so that the first communication device can determine the transmission between the first communication device and the second communication device Whether there is a third communication device between the links, so that the first communication device can switch the timeout period in the presence of the third communication device, so that the first communication device can improve the efficiency of link detection, wherein the port physical state It can be used to indicate whether the second communication device detects an optical signal on the port of the transmission link.

Optionally, in combination with the second aspect, in a first possible implementation manner of the second aspect, the first indication information may indicate a port physical state of the port.

Wherein, the physical state of the port may be the physical state of the port in which the optical signal is detected as described in the second aspect. At this time, the first communication device can determine that the third communication device exists after the first indication information; the physical state of the port is The state may also be a physical state of the port in which no optical signal is detected, and at this time, the first communication device may determine that the third communication device does not exist according to the first indication information. Using this method, it can be judged whether there are other communication devices between the two communication devices. The method can be applied not only to time-out switching but also to other aspects.

In combination with the second aspect or in combination with the above possible implementations of the second aspect, in a second possible implementation of the second aspect, the second LACP message includes a local end information type length value TLV data field, and the local end The information TLV data field carries the first indication information.

The first indication information can be carried in the existing TLV data field of the second LACP message, without adding a new field structure, and the method is simple and easy to operate.

In combination with the second aspect or the above-mentioned possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the second LACP message includes a connection state TLV data field, and the connection state TLV data field carries the the first indication information.

The first indication information may be carried in a new TLV data field defined in the extension field of the second LACP packet, so that the first communication device can obtain the first indication information.

In combination with the second aspect or in combination with the above-mentioned possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, the method further includes: the second communication device receiving a third communication device from the first communication device LACP packet, the third LACP packet carries second indication information, and the second indication information is used to instruct the second communication device to switch the timeout period for detecting the transmission link from the first timeout period to the first timeout period. Two timeout time, or the second indication information is used to indicate that the third communication device exists in the transmission link between the first communication device and the second communication device; the second communication device will The timeout period for detecting the transmission link is switched from the first timeout period to the second timeout period.

The content included in the second indication information is diversified, so that the second communication device can switch the timeout time according to the diversified second indication information, thereby shortening the delay of the second communication device in detecting the transmission link and improving the second communication The device detects the efficiency of the transmission link.

Further, in combination with the second aspect or the above possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the second communication device receives a third LACP from the first communication device Before sending the message, the method may further include: the second communication device receives a fourth LACP message from the first communication device, where the fourth LACP message is used to trigger the second communication device to turn off the optical signal; the second communication device The communication device receives second indication information from the first communication device, where the second indication information is used to indicate the port physical state of the first communication device when the port on the transmission link detects an optical signal, the second communication device The device switches the first timeout period to the second timeout period according to the second indication information.

The second communication device switches the first timeout period to the second timeout period according to the second indication information, which can shorten the delay of link detection of the second communication device, so as to perform port switching in time and reduce the number of second communication devices. cut-off time.

Further, in combination with the second aspect or the above possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the second timeout period is a timeout period set by the first communication device.

In a third aspect, an apparatus for switching a timeout period is provided, which is used to perform the method in the first aspect or any possible implementation manner of the first aspect. Specifically, the apparatus includes a method for performing the first aspect or the first aspect. Modules and/or units of a method in any possible implementation.

In a fourth aspect, a device for switching a timeout period is provided, which is used to execute the method in the second aspect or any possible implementation manner of the second aspect. A module and/or unit of a method in a possible implementation.

In a fifth aspect, a communication device is provided, the communication device including a bus system, a processor transceiver and a memory. The transceiver, the memory and the processor are connected through a bus system, the memory is used to store instructions, the processor is used to execute the instructions stored in the memory to control the transceiver to send and receive signals, and when the processor executes the instructions stored in the memory, the processor and a transceiver to perform the method of the first aspect or any possible implementation of the first aspect.

In a sixth aspect, a communication device is provided, the communication device comprising: a bus system, a processor transceiver and a memory. The transceiver, the memory and the processor are connected through a bus system, the memory is used to store instructions, the processor is used to execute the instructions stored in the memory to control the transceiver to send and receive signals, and when the processor executes the instructions stored in the memory, the processor and a transceiver to perform the method of the second aspect or any possible implementation of the second aspect.

A seventh aspect provides a communication system, the communication system includes the third aspect or the device for switching the timeout time in any possible implementation manner of the third aspect, and the communication system further includes the fourth aspect or the fourth aspect. The device for switching the timeout period in any possible implementation manner.

In an eighth aspect, a communication system is provided, the communication system includes the fifth aspect or the communication device in any possible implementation manner of the fifth aspect, and the communication system further includes the sixth aspect or any one of the sixth aspect A communication device in a possible implementation.

In a ninth aspect, a computer-readable medium is provided for storing a computer program, the computer program comprising instructions for performing the method in the first aspect or any possible implementation of the first aspect.

In a tenth aspect, a computer-readable medium is provided for storing a computer program, the computer program comprising instructions for performing the method of the second aspect or any possible implementation of the second aspect.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 shows a schematic diagram of an application scenario of a method for switching a timeout period according to an embodiment of the present invention.

FIG. 2 shows a schematic diagram of a method for switching a timeout period according to an embodiment of the present invention.

FIG. 3 shows another schematic diagram of a method for switching a timeout period according to an embodiment of the present invention.

FIG. 4 shows a schematic diagram of a local end information TLV data field according to an embodiment of the present invention.

FIG. 5 shows a schematic diagram of a connection state TLV data field according to an embodiment of the present invention.

FIG. 6 shows a schematic diagram of an apparatus for switching a timeout period according to an embodiment of the present invention.

FIG. 7 shows another schematic diagram of an apparatus for switching a timeout period according to an embodiment of the present invention.

FIG. 8 shows a schematic diagram of an apparatus for switching a timeout period according to another embodiment of the present invention.

FIG. 9 shows another schematic diagram of an apparatus for switching a timeout period according to another embodiment of the present invention.

FIG. 10 shows a schematic diagram of a communication device according to an embodiment of the present invention.

FIG. 11 shows a schematic diagram of a communication device according to another embodiment of the present invention.

FIG. 12 shows a schematic diagram of a communication system according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The communication device in the present invention may be a customer edge device (Customer Edge, referred to as "CE"), a network side edge (Provider Edge, referred to as "PE") device or a core (Provider, referred to as "P") device. The CE device may be a switch, a router, a routing switch, or an integrated access device (Internet addiction disorder, referred to as "IAD" for short) and other devices that access end users. The PE device may be an aggregation layer device, and access data processed by the CE device. The main functions of the PE equipment in the network are aggregation, encapsulation and decapsulation.

In order to illustrate the technical solution of the embodiment of the present invention more clearly, FIG. 1 shows a schematic diagram of an application scenario of the method for switching the timeout time according to the embodiment of the present invention.

As shown in FIG. 1 , two communication devices (for example, communication device A and communication device C) may be connected through multiple sub-links when transmitting data. Two communication devices can bundle the multiple sub-links together and form a logical link through link aggregation. The bandwidth of this logical link is equal to the sum of the bandwidths of the original multiple sub-links, thereby increasing the link bandwidth. the goal of. Wherein, different sub-links correspond to different ports of the same communication device. For example, communication device A includes ports a1 and a2, communication device B includes ports b11, b12, b21, and b22, and communication device C includes ports c1 and c2. The sub-link between the communication device A and the communication device C may include a first sub-link passing through ports a1, b11, b12 and c1, and may also include a second sub-link passing through ports a2, b21, b22 and c2 . Wherein, each sub-link in the multiple sub-links can perform bidirectional transmission.

When two communication devices transmit data, they need to periodically check whether the transmission link is normal. The detection method is usually that two communication devices send keep-alive messages to each other and detect whether the received keep-alive messages time out to judge whether each sub-link is normal. When transmitting a message, there are two possible implementations for the connection of the two communication devices: the first is that the two communication devices are directly connected, which means that the two communication devices are connected only through the transmission link; the third is to connect the two communication devices directly. The second is that the two communication devices are connected through a third communication device (such as a relay device), that is, there is a third communication device between the transmission links of the two communication devices, where the third communication device may be one or a third communication device. multiple. In the first possible implementation, two communication devices are directly connected, and if the transmission link fails, the two communication devices will immediately detect the transmission link failure; in the second possible implementation, the two There are other communication devices (for example, communication device B) between the transmission links of the communication device. Once the transmission link (for example, the link between b12 and c1 in the first sub-link) fails, communication device A needs to After a timeout period, the failure of the first sub-link can be learned and the link switching can be performed (for example, the data originally transmitted by the first sub-link is transferred to the second sub-link for transmission). However, in order to ensure the stability of the link detection of the communication device, manufacturers generally set the timeout period of the communication equipment as a long timeout period (eg, 90s) by default. At this time, it takes 90 s for the communication device A to know that the first sub-link is faulty and then perform link switching, which leads to prolonged link detection, low efficiency, and long interruption time of the communication device. In order to improve the efficiency of link detection, the present invention proposes a method for switching overtime.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 2 shows a method 100 for switching a timeout period provided by an embodiment of the present invention. As shown in FIG. 2 , the method 100 includes:

S110. The first communication device determines whether a third communication device exists in the transmission link between the first communication device and the second communication device;

S120. When the first communication device determines that the third communication device exists in the transmission link, the first communication device switches the timeout period for detecting the transmission link from the first timeout period to the second timeout period, The first timeout period is longer than the second timeout period.

Specifically, the first communication device may first determine whether there is a third communication device in the transmission link between the first communication device and the second communication device. Since the first communication device defaults to the first timeout period under normal circumstances, if there is a third communication device, the first timeout period can be switched to the second timeout period. For example, the timeout period of the first timeout period is 90s, and the timeout period of the second timeout period is 3s. At this time, if the link fails, the first communication device can learn that the transmission link is faulty after 90s. Now it only takes 3s to know that the link is switched in time to reduce the interruption of the first communication device. flow time.

In this embodiment of the present invention, as an example and not a limitation, optionally, the second timeout period may be a timeout period set by the first communication device. In other words, before the first communication device switches the time-out time for detecting the transmission link from the first time-out time to the second time-out time, the method 100 may further include: the first communication device setting the first time-out time 2. Timeout time. For example, the first communication device is only preset with a first timeout period, and when the first communication device determines that the second communication device exists, the first communication device can set a second timeout period as required. For example, the first communication device may set a second timeout period of 30s. It should be understood that the second timeout period may be set by the first communication device, and may also be set by a control device that controls the first communication device and the second communication device. The first communication device may flexibly set the second timeout period as required, so that the first communication device can flexibly perform link detection.

Compared with the long timeout period generally adopted in the prior art, with this method, the first communication device can dynamically adjust the timeout period as required, shorten the delay of link detection, and improve the efficiency of link detection.

It should be understood that the first timeout period mentioned in the embodiment of the present invention is not limited to 90s, and similarly the second timeout period is not limited to 3s.

It should be noted that if the first communication device determines that there is a third communication device in the transmission link, the first communication device can automatically perform a timeout time switch; if the first communication device determines that there is no third communication device in the transmission link device, the first communication device can continue to use the default long timeout period to perform link detection, and can also perform timeout period switching, which is not limited in the present invention.

It should also be noted that, compared with the method 100 for switching the timeout period provided by the embodiment of the present invention, compared with the short timeout period (for example, 3s) set by default by the communication device, the method 100 can flexibly adjust the timeout period according to the actual application scenario. The detection efficiency of the link is improved, and the stability of the link detection can be taken into account (if the first communication device determines that there is no third communication device in the transmission link, the first communication device can continue to use the long timeout period for link detection. ).

It should be understood that in link aggregation, a communication device may transmit data in each sub-link through different ports, and the transmission link mentioned in the present invention may refer to multiple A certain sub-link in the sub-links (for example, it may be the first sub-link in FIG. 1 ). For simplicity, a certain sub-link between the two communication devices is represented by a transmission link.

It should also be understood that if the first communication device detects that the third communication device exists between the transmission links, the first communication device performing the timeout time switch can be understood as the first communication device using the second timeout time for the first communication device. Link detection is performed on all sub-links between the communication device and the second communication device. In other words, if the first communication device detects that there is a third communication device in a certain sub-link between the first communication device and the second communication device, such as the first sub-link, the first communication device can All sub-links between the communication device and the second communication device are switched over time. For example, the transmission link between the first communication device and the second communication device includes a first sub-link and a second sub-link, if the first communication device detects that there is a third communication in the first sub-link device, the first communication device can switch both the timeout period of the first sublink and the timeout period of the second sublink from the first timeout period to the second timeout period. At this time, the first communication device can perform fast link detection on all sub-links between the first communication device and the second communication device, so that the first communication device can detect the link failure in time, so that the link switch.

Optionally, FIG. 3 shows another schematic diagram of a method for switching a timeout period according to an embodiment of the present invention. As shown in FIG. 3, before the first communication device determines whether a third communication device exists in the transmission link between the first communication device and the second communication device, the method 100 may further include:

S101. The second communication device sends a first link aggregation control protocol LACP packet to the first communication device, where the first LACP packet is used to trigger the first communication device to turn off the optical signal;

S102, the first communication device stops sending an optical signal after receiving the first link aggregation control protocol LACP message from the second communication device;

S103. The first communication device receives a second LACP packet from the second communication device, where the second LACP packet carries first indication information, where the first indication information is used to indicate that the second communication device is in the transmission chain The physical state of the port when the port on the road detects the optical signal;

Wherein, the first communication device in S110 determines whether there is a third communication device in the transmission link between the first communication device and the second communication device, including:

S111. The first communication device determines that there is a third communication device in the transmission link according to the first indication information.

Specifically, the second communication device may send the first LACP packet to the first communication device, and the first communication device may stop sending the optical signal after receiving the first LACP packet. Optionally, the first LACP packet may refer to the first packet received by the first communication device after the first communication device and the second communication device enable the LACP function. Specifically, after the first communication device and the second communication device enable the LACP function, the first communication device and the second communication device need to perform transmission protocol negotiation by sending and receiving LACP packets, where the first LACP packets may refer to the first communication The device receives the first LACP packet for transport protocol negotiation from the second communication device. At this time, the transmission protocol between the first communication device and the second communication device has not been successfully negotiated, so the stop of the first communication device to send the optical signal will not affect the transmission of the existing service. After the second communication device sends the first LACP packet, it sends a second LACP packet to the first communication device, where the second LACP packet carries first indication information, and the first indication information is used to instruct the second communication device The physical state of the port on this transport link. Typically, there are two physical states of a port:

The first:

The physical state of the port may be UP, indicating that the port detects an optical signal. If the first indication information is used to indicate the port physical state (UP) of the second communication device when an optical signal is detected at the port of the transmission link, because the first communication device shuts down after receiving the first LACP message Optical signal, the first communication device can determine, according to the first indication information, that the optical signal received by the port of the second communication device is an optical signal from another communication device, such as a third communication device, at this time, the first communication device can determine There is a third communication device (ie, the first communication device and the second communication device are not directly connected), so that the timeout period is switched. For example, as shown in FIG. 1, taking the first sub-link as an example, the c1 port of the communication device C can send first indication information to the a1 port of the communication device A, where the first indication information indicates the port physical state of the c1 port ( UP), the port physical state (UP) may indicate that the c1 port detects an optical signal. Since the a1 port of the communication device A has turned off the optical signal, after the a1 port of the communication device A receives the first indication information, the communication device A can determine the optical signal received by the c1 port of the communication device C according to the first indication information The signal comes from the port b12 of the communication device B, thereby determining that the communication device B exists between the communication device A and the communication device C.

The second:

The physical state of the port may also be DOWM, indicating that the port does not detect an optical signal. If the first indication information is used to indicate the port physical state (DOWM) of the second communication device when no optical signal is detected at the port of the transmission link, the first communication device may determine the first communication device according to the first indication information There is no third communication device between a communication device and the second communication device (ie, the first communication device and the second communication device are directly connected). At this time, the first communication device can maintain the original timeout period. For example, as shown in FIG. 1, taking the first sub-link as an example, the c1 port of the communication device C can send first indication information to the a1 port of the communication device A, where the first indication information indicates the port physical state of the c1 port ( DOWM), the port physical state (DOWM) may indicate that the c1 port does not detect an optical signal. After the a1 port of the communication device A turns off the optical signal, the communication device A can learn that the c1 port of the communication device C does not receive an optical signal through the first indication information, thereby determining that there is no other communication device A and C. communication device.

The method can be used to judge whether there is a third communication device in the transmission link between the two communication devices, the method is simple and easy to operate, and has good compatibility with the prior art. It should be understood that the method for determining whether there is a third communication device can be applied to other aspects besides timeout time switching, which is not limited in the present invention.

It should be understood that the above-mentioned first communication device turning off the optical signal after receiving the first LACP message may mean that the first communication device turns off the laser after receiving the first LACP message. After the first communication device turns off the optical signal, it does not affect the first communication device to receive the message. In other words, after the first communication turns off the optical signal, the message cannot be sent but the message from the second communication device can be received.

It should be understood that, as shown in FIG. 1, the second communication device sending the first LACP packet to the first communication device may refer to the port corresponding to the second communication device on a certain sub-link (for example, the communication device C is in the first communication device). The port c1 of the sub-chain sends the first LACP packet to the port corresponding to the first communication device on the sub-link (the communication device A is on the port a1 of the first sub-chain). Similarly, the stop of the first communication device from sending the optical signal may also mean that the port corresponding to the first communication device on the sub-link (for example, the communication device A on the port a1 of the first sub-link) stops sending the optical signal. In a word, in the present invention, actions such as sending and receiving of a corresponding communication device can be understood as performing the action on a port corresponding to a certain sub-link of the corresponding communication device. For simplicity, the first communication device and the second communication device are directly used as execution subjects for description.

It should also be understood that all ports mentioned in the embodiments of the present invention represent optical fiber ports, and are described in terms of ports to simplify the description.

It should also be understood that, in general, messages are periodically transmitted between communication devices. That is, after the second communication device sends the first LACP packet to the first communication device, it will send the second LACP packet after a period of time. Therefore, when the port of the second communication device detects the optical signal, the first communication device has stopped sending the corresponding optical signal.

It should be noted that, when the first communication device determines whether there is a third communication device in the transmission link, other methods may be adopted in addition to the methods mentioned above. For example, the first communication device may discover the topology of the entire network through a Resilient Packet Ring (Resilient Packet Ring, "RPR" for short), and then determine whether there is a transmission link between the first communication device and the second communication device third communication device. For another example, the first communication device may determine a neighbor device through a link layer discovery protocol (Link Layer Discovery Protocol, "LLDP" for short), and then determine whether there is a third communication device between the two communication devices. For another example, the first LACP packet sent by the second communication device may be used to instruct the first communication device to stop sending the optical signal, and after the first communication device stops sending the optical signal, the second communication device detects whether it can receive the message. to the optical signal so that the second communication device can determine whether the third communication device is present in the transmission link. Further, the second communication device may send device information to the first communication device, where the device information may be used to indicate whether there is a third communication device between the first communication device and the second communication device, and the first communication device receives the After the device information, it can be determined whether there is a third communication device in the transmission link.

Further, as an example and not a limitation, in order to avoid the chance that the physical state of the port is UP or DOWN, the second communication device may send multiple second LACP packets, and each second LACP packet carries the first indication information. . The first communication device may determine the port physical state of the second communication device according to the port physical state indicated by the last received first indication information. For example, the second communication device continuously sends three second LACP packets to the first communication device, and each second LACP packet carries the first indication information. The first two of the three indication information indicate the physical state of the UP port (that is, the optical signal is detected), and the third indication information indicates the physical state of the DOWN port (that is, the optical signal is not detected). After receiving the three indication information successively, the communication device may determine that the physical state of the port is DOWN. The first communication device may also determine the port physical state of the second communication device according to the ratio of the port physical states UP and DOWN. For example, if two of the three first indication information indicate the physical state of the port UP, and one of the first indication information indicates the physical state of the port DOWN, the first communication device may determine that the physical state of the port is UP .

Optionally, the second LACP message includes a local end information type length value TLV data field, and the local end information TLV data field carries the first indication information. FIG. 4 shows a schematic diagram of a local end information type length value (TypeLength Value is abbreviated as "TLV") data field according to an embodiment of the present invention.

Specifically, the first indication information may be carried in the existing TLV data field of the second LACP message, for example, in the local end information TLV data field. As shown in FIG. 4 , the first indication information may be carried in a certain byte of a reserved field in the TLV data field of the local end information (the reserved field includes three bytes, for example, the second byte may be used) . The port physical state of whether the port detects an optical signal can be notified to the opposite end in the local end information TLV data field. For example, when the reserved byte can be set to 0 (also can be set to 1 or other identifiers), it indicates that the port on the transmission link of the second communication device detects the port physical status (UP) of the optical signal. When the reserved byte can be set to 1 (also can be set to 0 or other identifiers), it indicates that the port of the second communication device on the transmission link does not detect the port physical state (DOWN) of the optical signal.

FIG. 5 shows a schematic diagram of a port status TLV data field according to an embodiment of the present invention. Optionally, the second LACP packet includes a connection state TLV data field, where the connection state TLV data field carries the first indication information.

Specifically, the first indication information may be carried in the TLV data field extended in the second LACP packet. For example, as shown in FIG. 5 , a new connection state TLV data field may be defined in the extension field of the second LACP packet to carry the first indication information. The port physical state of whether the port detects an optical signal may be notified to the opposite end in the added connection state TLV data field. For example, when the connection status byte in the TLV data field can be set to 0 (also can be set to 1 or other identifiers), it indicates that the port on the transmission link of the second communication device detects the physical port of the optical signal. Status (UP). When the connection status byte can be set to 1 (also can be set to 0 or other identifiers), it indicates that the port of the second communication device on the transmission link does not detect the port physical status (DOWN) of an optical signal.

It is described above that the first communication device can perform timeout time switching when there is a third communication device in the transmission link, so that the first communication device can quickly perform link detection and improve the efficiency of link detection. Usually, in order to improve the efficiency of the second communication device in detecting the link, the second communication device may also perform a timeout switch. That is, both the first communication device and the second communication device can perform a timeout switch, so that both the first communication device and the second communication device can perform link detection efficiently. The following describes in detail how the second communication device performs the time-out switching with reference to FIG. 3 .

Optionally, as shown in FIG. 3 , the method 100 further includes:

S130. The first communication device sends a third LACP packet to the second communication device, where the third LACP packet carries second indication information, where the second indication information is used to indicate that the second communication device will be used to detect the The timeout period of the transmission link is switched from the first timeout period to the second timeout period, or the second status indication information is used to indicate that the third communication device exists between the transmission links;

S140. The second communication device switches the timeout period for detecting the transmission link from the first timeout period to the second timeout period according to the second indication information.

Specifically, after the first communication device determines that a third communication device exists between the transmission links, the first communication device may send second indication information to the second communication device for the second communication device The time-out switching is performed according to the first indication information. Wherein, the content indicated by the first indication information may include three situations:

Case 1:

The second indication information directly instructs the second communication device to switch the first timeout period to the second timeout period. At this time, the second communication device directly performs timeout time switching after receiving the second indication information. Specifically, by executing S101-S111, the first communication device can learn that the third communication device exists in the transmission link and needs to perform a timeout switch. At this time, the first communication device may directly send second indication information to the second communication device for instructing the second communication device to perform a timeout time switch, and the second communication device directly performs a timeout according to the instruction after receiving the second indication information time switch.

Case two:

The second indication information indicates that the third communication device exists in the transmission link. At this time, after receiving the second indication information, the second communication device may know that the third communication device exists and then perform timeout time switching. Specifically, the first communication device may learn that the third communication device exists in the transmission link by performing S101-S111. At this time, the first communication device may send second indication information for indicating the existence of the third communication device to the second communication device, and the second communication device learns that the third communication device exists after receiving the second indication information, Therefore, the second communication device determines to perform the timeout time switching.

Case three:

Before the first communication device sends a third LACP packet to the second communication device, the method may further include: the first communication device sends a fourth LACP packet to the second communication device, where the fourth LACP packet is used for triggering the second communication device to turn off the optical signal;

The second indication information may be used to indicate the physical state of the port of the first communication device when the port on the transmission link detects the optical signal; optionally, the fourth LACP packet is the first communication device and the first communication device. The first packet received by the second communication device after the LACP function is enabled on the second communication device. After receiving the second indication information, the second communication device may first determine that there is a third communication device, and then perform timeout time switching. That is, in case 3, the second communication device can use the same method as the first communication device to first determine that there is a third communication device in the transmission link, and then perform the time-out switching. In order to avoid redundant description, the detailed description is omitted.

In three cases, the second indication information may be carried in the existing TLV data field of the third LACP packet sent by the first communication device to the second communication device, or may be carried in the newly added third LACP packet In the extended TLV data field of , the specific description can be as described above, which is not limited in the present invention.

It should be understood that in the present invention, it may be only the switching timeout time of the first communication device, or it may be the switching timeout time of both the first communication device and the second communication device. When the third communication device exists on the transmission link, both the first communication device and the second communication device perform timeout time switching, which may be a preferred embodiment of the present invention.

It should be noted that, in this embodiment of the present invention, the second timeout period may be set by the first communication device, and when the second communication device switches the timeout period, the second communication device may switch the first timeout period to the second timeout period time, the first timeout period can also be switched to a third timeout period, wherein the third timeout period is set by the second communication device. In other words, when the second communication device learns that the time-out switching is required (for example, the second communication device receives third indication information from the first communication device, the third indication information can be used to instruct the second communication device perform timeout mode switching or indicate that there is a third communication device in the transmission link), the second communication device is not limited to switching the timeout time to the same timeout time as the first communication device.

The method for switching a timeout period according to an embodiment of the present invention is described in detail above with reference to FIGS. 1 to 5 , and the apparatus for switching a timeout period according to an embodiment of the present invention is described below with reference to FIGS. 6 to 9 .

FIG. 6 shows a schematic block diagram of an apparatus 200 for switching a timeout period according to an embodiment of the present invention. As shown in FIG. 6 , the apparatus 200 may be a first communication device, and the apparatus includes a determination module 210 and a processing module 220, wherein,

The determining module 210 is configured to determine whether a third communication device exists in the transmission link between the first communication device and the second communication device;

The processing module 220 is configured to, when the determining module 210 determines that the third communication device exists, switch the timeout period for detecting the transmission link from a first timeout period to a second timeout period, where the first timeout period is longer than the first timeout period. 2. Timeout time.

Optionally, FIG. 7 shows another schematic block diagram of an embodiment of the present invention. As shown in FIG. 7 , the apparatus 200 further includes: a receiving module 230, where the receiving module 230 is configured to receive a first link aggregation control protocol LACP message from the second communication device;

The processing module 220 is further configured to stop sending the optical signal after the receiving module 230 receives the first LACP message;

The receiving module 230 is further configured to receive a second LACP from the second communication device, where the second LACP carries first indication information, and the first indication information is used to indicate a port of the second communication device on the transmission link The physical state of the port when the optical signal is detected;

The determining module 210 is specifically configured to determine, according to the first indication information, that the third communication device exists in the transmission link between the first communication device and the second communication device.

Optionally, the second LACP message includes a local end information type length value TLV data field, and the local end information TLV data field carries the first indication information.

Optionally, the second LACP packet includes a connection state TLV data field, where the connection state TLV data field carries the first indication information.

Optionally, as shown in FIG. 7 , the apparatus 200 further includes: a sending module 240, where the sending module 240 is configured to send a third LACP packet to the second communication device, where the third LACP packet carries the second indication information , the second indication information is used to instruct the second communication device to switch the time-out time for detecting the transmission link from the first time-out time to the second time-out time, or the second indication information is used to instruct the first time-out time The third communication device exists between a communication device and the transmission link of the second communication device, so that the second communication device can change the timeout time for detecting the transmission link by the first communication device according to the second indication information. A timeout period is switched to the second timeout period.

Optionally, before the processing module 220 switches the timeout period for detecting the transmission link from the first timeout period to the second timeout period, the processing module 220 is further configured to set the second timeout period.

It should be noted that, for the above-mentioned transmission link and the first indication information, etc., reference may be made to the relevant descriptions in the embodiments shown in FIG. 1 to FIG. 5 , and details are not repeated here.

It should be understood that the apparatus 200 for switching a timeout period according to an embodiment of the present invention may correspond to the first communication device in the method for switching a timeout mode according to an embodiment of the present invention, and each module in the apparatus 200 for switching a timeout period and In order to implement each step performed by the first communication device in the above-mentioned FIG. 1 to FIG. 5 by the unit/or unit, for the sake of brevity, details are not repeated here.

Therefore, in the communication device of the embodiment of the present invention, when the apparatus 200 determines that there is a third communication device on the transmission link, the apparatus 200 can switch the timeout period, thereby improving the link detection efficiency of the apparatus 200.

FIG. 8 shows a schematic block diagram of an apparatus 300 for switching a timeout period according to another embodiment of the present invention. As shown in FIG. 8 , the apparatus 300 may be a second communication device, and the apparatus 300 includes a sending module 310, wherein the sending module 310 is configured to send a first link aggregation control protocol LACP packet to the first communication device, the The first LACP packet is used to trigger the first communication device to turn off the optical signal; the sending module 310 is further configured to send a second LACP packet to the first communication device, where the second LACP packet carries the first indication information, the The first indication information is used to indicate the physical state of the port of the second communication device when the port on the transmission link detects the optical signal, so that the first communication device can switch the first timeout time according to the first indication information is a second timeout period, and the first timeout period is longer than the second timeout period.

Optionally, the second LACP message includes a local end information type length value TLV data field, and the local end information TLV data field carries the first indication information.

Optionally, the second LACP packet includes a connection state TLV data field, where the connection state TLV data field carries the first indication information.

FIG. 9 shows another schematic diagram of an apparatus for switching a timeout period according to another embodiment of the present invention. Optionally, as shown in FIG. 9 , the apparatus 300 for switching the timeout period further includes: the receiving module 320 is configured to receive a third LACP from the first communication device, where the third LACP carries second indication information, the second The indication information is used to instruct the second communication device to switch the time-out time for detecting the transmission link from the first time-out time to the second time-out time, or the second indication information is used to indicate that there is a presence in the transmission link The third communication device; the processing module 330, configured to switch the timeout period for detecting the transmission link from the first timeout period to the second timeout period according to the second indication information.

Optionally, the second timeout period is a timeout period set by the first communication device.

It should be noted that, for the above-mentioned transmission link and the first indication information, etc., reference may be made to the relevant descriptions in the embodiments shown in FIG. 1 to FIG. 5 , and details are not repeated here.

The apparatus 300 for switching the timeout time according to the embodiment of the present invention may correspond to the second communication device in the method for switching the timeout mode according to the embodiment of the present invention, and each module and/or unit in the apparatus 300 for switching the timeout time In order to realize the various steps performed by the second communication device in the above-mentioned FIG. 1 to FIG. 5 , for the sake of brevity, details are not repeated here.

Therefore, according to the apparatus 300 for switching a timeout period in this embodiment of the present invention, the apparatus can send a first LACP packet and a second LACP packet including the first indication information to the first communication device, so that the first communication device performs a timeout Time switching, and at the same time, the second communication device can also perform timeout time switching, so as to improve the efficiency of detecting the link.

Above, the apparatus for switching the timeout period according to the embodiment of the present invention is described in detail from the perspective of functional modules with reference to FIGS. 6 to 9 . The following describes the communication device according to the embodiment of the present invention in detail with reference to FIGS.

FIG. 10 shows a schematic block diagram of a communication device 400 according to an embodiment of the present invention. As shown in FIG. 10 , the communication device 400 , which may be a first communication device, includes a processor 410 , a transceiver 420 , a memory 430 and a bus system 440 , wherein the processor 410 , the transceiver 420 and the memory 430 can be connected through a bus system 440, the memory 430 can be used for storing instructions, the processor 410 is used for executing the instructions stored in the memory 430, and the processor 410 is used for: determining the distance between the first communication device and the second communication device whether there is a third communication device in the transmission link of The timeout period is longer than the second timeout period.

Optionally, the transceiver 420 is configured to receive a first link aggregation control protocol LACP message from the second communication device; the processor 410 is further configured to stop after the transceiver 420 receives the first LACP message sending an optical signal; the transceiver 420 is further configured to receive a second LACP from the second communication device, the second LACP carries first indication information, and the first indication information is used to indicate that the second communication device is in the transmission chain The physical state of the port when the port on the road detects the optical signal; the processor 410 is specifically configured to determine, according to the first indication information, that the third communication device exists in the transmission link between the first communication device and the second communication device communication device.

Optionally, the second LACP message includes a local end information type length value TLV data field, and the local end information TLV data field carries the first indication information.

Optionally, the second LACP packet includes a connection state TLV data field, where the connection state TLV data field carries the first indication information.

Optionally, the transceiver 420 is further configured to send a third LACP packet to the second communication device, where the third LACP packet carries second indication information, and the second indication information is used to instruct the second communication device to The time-out time for detecting the transmission link is switched from the first time-out time to the second time-out time, or the second indication information is used to indicate the connection between the transmission link of the first communication device and the second communication device The third communication device exists for the second communication device to switch the timeout period for detecting the transmission link from the first timeout period to the second timeout period according to the second indication information.

Optionally, before the processor 410 switches the timeout period for detecting the transmission link from the first timeout period to the second timeout period, the processor 410 is further configured to set the second timeout period.

It should be noted that, for the above-mentioned transmission link and the first indication information, etc., reference may be made to the relevant descriptions in the embodiments shown in FIG. 1 to FIG. 5 , and details are not repeated here.

It should be understood that, in this embodiment of the present invention, the processor 410 may be a central processing unit (central processing unit, “CPU” for short), and the processor 410 may also be other general-purpose processors, digital signal processors (DSPs), Application Specific Integrated Circuits (ASICs), Off-The-Shelf Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 430 , which may include read-only memory and random access memory, provides instructions and data to the processor 410 . A portion of processor 410 may also include non-volatile random access memory. For example, the processor 410 may also store device type information.

In addition to the data bus, the bus system 440 may also include a power bus, a control bus, a status signal bus, and the like. However, for the sake of clarity, the various buses are labeled as bus system 440 in the figure.

In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the processor 410 or an instruction in the form of software. The steps of the method for transmitting a reference signal disclosed in conjunction with the embodiments of the present invention may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 430, and the processor 410 reads the information in the memory 430, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.

The communication device 400 according to the embodiment of the present invention may correspond to the first communication device of the method for switching the timeout time according to the embodiment of the present invention, and some parts of the communication device 400 and other operations and/or functions mentioned above are for the purpose of FIG. 1 , respectively. The corresponding processes performed by the first communication device in FIG. 5 will not be repeated here for brevity.

Therefore, in the communication device according to the embodiment of the present invention, when there is a third communication device in the transmission link, the time-out time switch can be performed, thereby improving the efficiency of link detection.

FIG. 11 shows a schematic block diagram of a communication device 500 according to an embodiment of the present invention. As shown in FIG. 11 , the communication device 500 may be a second communication device, and the communication device 500 includes a processor 510 , a transceiver 520 , a memory 530 and a bus system 540 , wherein the processor 510 , the transceiver 520 and the memory 530 may Connected through the bus system 540, the memory 530 can be used for storing instructions, the processor 510 is used for executing the instructions stored in the memory 530,

The transceiver 520 is configured to send a first link aggregation control protocol LACP packet to the first communication device; the transceiver 520 is further configured to send a second LACP packet to the first communication device, where the second LACP packet carries First indication information, the first indication information is used to indicate the port physical state of the second communication device when the port on the transmission link between the first communication device and the second communication device detects an optical signal, so as to use Since the first communication device switches the timeout period for detecting the transmission link from the first timeout period to the second timeout period according to the first indication information, the first timeout period is longer than the second timeout period.

Optionally, the second LACP message includes a local end information type length value TLV data field, and the local end information TLV data field carries the first indication information.

Optionally, the second LACP packet includes a connection state TLV data field, where the connection state TLV data field carries the first indication information.

Optionally, the transceiver 520 is configured to receive a third LACP from the first communication device, where the third LACP carries second indication information, and the second indication information is used to indicate that the second communication device will be used to detect the The timeout period of the transmission link is switched from the first timeout period to the second timeout period, or the second indication information is used to indicate that a third communication device exists in the transmission link between the first communication device and the second communication device. Communication equipment; the processor 510 is configured to switch the timeout period for detecting the transmission link from the first timeout period to the second timeout period according to the second indication information.

Optionally, the second timeout period is a timeout period set by the first communication device.

It should be noted that, for the above-mentioned transmission link and the first indication information, etc., reference may be made to the relevant descriptions in the embodiments shown in FIG. 1 to FIG. 5 , and details are not repeated here.

It should be understood that in this embodiment of the present invention, the processor 510 may be a central processing unit (central processing unit, “CPU” for short), and the processor 510 may also be other general-purpose processors, digital signal processors (DSPs), Application Specific Integrated Circuits (ASICs), Off-The-Shelf Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 530 , which may include read-only memory and random access memory, provides instructions and data to the processor 510 . A portion of processor 510 may also include non-volatile random access memory. For example, the processor 510 may also store device type information.

In addition to the data bus, the bus system 540 may also include a power bus, a control bus, a status signal bus, and the like. However, for clarity of illustration, the various buses are labeled as bus system 540 in the figure.

In the implementation process, each step of the above-mentioned method may be completed by a hardware integrated logic circuit in the processor 510 or an instruction in the form of software. The steps of the method for transmitting a reference signal disclosed in conjunction with the embodiments of the present invention may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 530, and the processor 510 reads the information in the memory 530, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.

The communication device 500 according to the embodiment of the present invention may correspond to the first communication device of the method for switching the timeout time according to the embodiment of the present invention, and each unit in the communication device 500 and the above-mentioned other operations and/or functions are for the purpose of FIG. The corresponding processes performed by the first communication device in FIG. 1 to FIG. 5 are not repeated here for brevity.

Therefore, in the communication device according to the embodiment of the present invention, the communication device can send the first LACP packet and the first indication information to the first communication device, so that the first communication device performs a timeout time switch and improves the chain link of the first communication device. road detection efficiency. At the same time, the communication device can also perform time-out switching to improve the efficiency of the detection link.

FIG. 12 shows a schematic block diagram of a communication system according to an embodiment of the present invention. As shown in FIG. 12 , the communication system 600 includes a first communication device 610 and a second communication device 620 .

For the first communication device and the second communication device, reference may be made to the relevant descriptions in the embodiments shown in FIG. 1 to FIG. 5 , and details are not repeated here.

The communication system 600 can quickly detect the transmission link between the first communication device and the second communication device, thereby improving the efficiency of the communication system 600 in detecting the transmission link.

It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, rather than the embodiments of the present invention. implementation constitutes any limitation.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, removable hard disk, read-only memory (RAM), random access memory (ROM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (23)

1. A method of switching timeout time, the method comprising:

the method comprises the steps that a first communication device determines whether a third communication device exists in a transmission link between the first communication device and a second communication device;

when the first communication device determines that the third communication device exists in the transmission link, the first communication device switches the timeout time for detecting the transmission link from a first timeout time to a second timeout time, wherein the first timeout time is longer than the second timeout time.

2. The method of claim 1, wherein before the first communication device determines whether a third communication device is present in a transmission link between the first communication device and a second communication device, the method further comprises:

the first communication device stops sending optical signals after receiving a first Link Aggregation Control Protocol (LACP) message from the second communication device, wherein the first LACP message is used for triggering the first communication device to close the optical signals;

the first communication device receives a second LACP message from the second communication device, where the second LACP message carries first indication information, and the first indication information is used to indicate a port physical state of the second communication device when a port on the transmission link detects an optical signal;

the first communication device determining that a third communication device is present in a transmission link between the first communication device and a second communication device, comprising:

and the first communication equipment determines that the third communication equipment exists in the transmission link according to the first indication information.

3. The method of claim 2, wherein the second LACP packet comprises a local-end information type length value, TLV, data field, and wherein the local-end information TLV data field carries the first indication information.

4. The method of claim 2, wherein the second LACP packet comprises a connection status TLV data field, and wherein the connection status TLV data field carries the first indication information.

5. The method according to any one of claims 1 to 4, further comprising:

the first communication device sends a third LACP message to the second communication device, where the third LACP message carries second indication information, and the second indication information is used to indicate that the second communication device switches the timeout time for detecting the transmission link from the first timeout time to the second timeout time, or

The second indication information is used for indicating that the third communication device exists in the transmission link, so that the second communication device switches the timeout time for detecting the transmission link from the first timeout time to the second timeout time according to the second indication information.

6. The method according to any of claims 1 to 4, wherein before the first communication device switches the timeout period for detecting the transmission link from the first timeout period to the second timeout period, the method further comprises:

the first communication device sets the second timeout time.

7. A method of switching timeout time, the method comprising:

the method comprises the steps that a second communication device sends a first Link Aggregation Control Protocol (LACP) message to a first communication device, wherein the first LACP message is used for triggering the first communication device to close an optical signal;

the second communication device sends a second LACP packet to the first communication device, where the second LACP packet carries first indication information, where the first indication information is used to indicate a port physical state of the second communication device when a port on a transmission link between the first communication device and the second communication device detects an optical signal, so that the first communication device switches a timeout time for detecting the transmission link from a first timeout time to a second timeout time, where the first timeout time is longer than the second timeout time.

8. The method of claim 7, wherein the second LACP packet comprises a local-end information type length value, TLV, data field, and wherein the local-end information TLV data field carries the first indication information.

9. The method of claim 7, wherein the second LACP packet comprises a connection status TLV data field, and wherein the connection status TLV data field carries the first indication information.

10. The method according to any one of claims 7 to 9, further comprising:

the second communication device receives a third LACP message from the first communication device, where the third LACP message carries second indication information, and the second indication information is used to indicate that the second communication device switches the timeout time for detecting the transmission link from the first timeout time to the second timeout time, or

The second indication information is used for indicating that a third communication device exists in the transmission link;

and the second communication equipment switches the overtime time for detecting the transmission link from the first overtime time to the second overtime time according to the second indication information.

11. The method of claim 7, wherein the second timeout period is a timeout period set by the first communication device.

12. An apparatus for switching a timeout mode, the apparatus being a first communications device, the apparatus comprising:

a determining module, configured to determine whether a third communication device exists in a transmission link between the first communication device and the second communication device;

and the processing module is configured to switch the timeout time for detecting the transmission link from a first timeout time to a second timeout time when the determining module determines that the third communication device exists in the transmission link, where the first timeout time is longer than the second timeout time.

13. The apparatus of claim 12, further comprising:

a receiving module, configured to receive a first link aggregation control protocol LACP packet from the second communication device, where the first LACP packet is used to trigger the first communication device to turn off an optical signal;

the processing module is further configured to stop sending optical signals after the receiving module receives the first LACP packet;

the receiving module is further configured to receive a second LACP from the second communication device, where the second LACP carries first indication information, and the first indication information is used to indicate a port physical state of the second communication device when a port on the transmission link detects an optical signal;

the determining module is specifically configured to determine that the third communication device exists in the transmission link according to the first indication information.

14. The apparatus of claim 13, wherein the second LACP packet comprises a local-end information type length value, TLV, data field, and wherein the local-end information TLV data field carries the first indication information.

15. The apparatus of claim 13, wherein the second LACP packet comprises a connection status TLV data field, and wherein the connection status TLV data field carries the first indication information.

16. The apparatus of any of claims 12 to 15, further comprising:

a sending module, configured to send a third LACP packet to the second communication device, where the third LACP packet carries second indication information, and the second indication information is used to indicate that the second communication device switches the timeout period for detecting the transmission link from the first timeout period to the second timeout period, or

The second indication information is used for indicating that the third communication device exists in the transmission link, so that the second communication device switches the timeout time for detecting the transmission link from the first timeout time to the second timeout time according to the second indication information.

17. The apparatus according to any of claims 12 to 15, wherein the processing module is further configured to set a second timeout time before the processing module switches the timeout time for detecting the transmission link from the first timeout time to the second timeout time.

18. An apparatus for switching a timeout, the apparatus being a second communication device, the apparatus comprising:

a sending module, configured to send a first link aggregation control protocol LACP packet to a first communication device, where the first LACP packet is used to trigger the first communication device to turn off an optical signal;

the sending module is further configured to send a second LACP packet to the first communication device, where the second LACP packet carries first indication information, where the first indication information is used to indicate a port physical state of the second communication device when a port on a transmission link between the first communication device and the second communication device detects an optical signal, so that the first communication device switches a first timeout time to a second timeout time according to the first indication information, where the first timeout time is longer than the second timeout time.

19. The apparatus of claim 18, wherein the second LACP packet comprises a local-end information type length value, TLV, data field, and wherein the local-end information TLV data field carries the first indication information.

20. The apparatus of claim 18, wherein the second LACP packet comprises a connection status TLV data field, and wherein the connection status TLV data field carries the first indication information.

21. The apparatus of any one of claims 18 to 20, further comprising:

a receiving module, configured to receive a third LACP from the first communication device, where the third LACP carries second indication information, and the second indication information is used to indicate that the second communication device switches the timeout time for detecting the transmission link from the first timeout time to the second timeout time, or

The second indication information is used for indicating that a third communication device exists in the transmission link;

and the processing module is used for switching the overtime time for detecting the transmission link from the first overtime time to the second overtime time according to the second indication information.

22. The apparatus according to any of claims 18 to 20, wherein the second timeout time is a timeout time set by the first communication device.

23. A communication system, the communication system comprising: the apparatus for handover timeout time according to any one of claims 12 to 17 and the apparatus for handover timeout time according to any one of claims 18 to 22.

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