Fault processing method, network element, and storage medium

Patent metadata

Field	Value
Publication number	US-2025358176-A1
Application number	US-202318873480-A
Country	US
Kind code	A1
Filing date	Apr 28, 2023
Priority date	Jun 13, 2022
Publication date	Nov 20, 2025
Grant date	—

Abstract

According to the present disclosure a fault processing method, a network element, and a non-transitory computer-readable storage medium are provided. The method may include: determining a target network device from the at least one network device in response to detecting that an aggregated stack link is in a disconnected state, where the target network device is in communication connection with a first forwarding device and a second forwarding device respectively; and performing data communication with the second forwarding device through the target network device.

First claim

1 . A fault processing method, applied to a first forwarding device in a stacking system, wherein the stacking system further comprises a second forwarding device, the first forwarding device and the second forwarding device are connected by an aggregated stack link, the aggregated stack link comprises at least two stack links, and the stacking system is in communication connection with at least one network device, and the method comprising:
determining a target network device from the at least one network device in response to detecting that the aggregated stack link is in a disconnected state, wherein the target network device is in communication connection with the first forwarding device and the second forwarding device respectively; and performing data communication with the second forwarding device through the target network device.

2 . The method of claim 1 , wherein determining a target network device from the at least one network device comprises:
determining at least one candidate network device from a plurality of network devices according to a first system topology table, wherein the first system topology table records a link topology between each forwarding device in the stacking system and a network device connected to the forwarding device; and determining the target network device from the at least one candidate network device according to a first preset rule, wherein the first preset rule is preset in the first forwarding device and the second forwarding device respectively.

3 . The method of claim 2 , wherein before determining at least one candidate network device from a plurality of network devices according to a first system topology table, the method further comprises:
generating a first system topology table; determining first topology information, and saving the first topology information to the first system topology table, wherein the first topology information comprises a link topology between the first forwarding device and a network device connected to the first forwarding device; and
acquiring second topology information sent by the second forwarding device, and saving the second topology information to the first system topology table, wherein the second topology information records a link topology between the second forwarding device and a network device connected to the second forwarding device.

4 . The method of claim 3 , wherein after generating a first system topology table, the method further comprises:
sending the first topology information to the second forwarding device, such that the second forwarding device saves the first topology information to a second system topology table of the second forwarding device, wherein the second system topology table further comprises the second topology information stored therein.

5 . The method of claim 3 , wherein each of the at least one network device is in communication connection with the stacking system through an aggregated network link, after determining the target network device from the at least one candidate network device according to a first preset rule, the method further comprises:
determining a primary forwarding system and a standby forwarding system of the stacking system, wherein the primary forwarding system comprises the first forwarding device and the standby forwarding system comprises the second forwarding device, or the primary forwarding system comprises the second forwarding device and the standby forwarding system comprises the first forwarding device; and sending first notification information to each of the connected network devices, such that each of the connected network devices adjusts the corresponding aggregated network link according to a second preset rule.

6 . The method of claim 5 , wherein the second preset rule comprises:
maintaining the current aggregated network link in response to the network device being in communication connection with the primary forwarding system or the standby forwarding system; or splitting the aggregated network link into a first aggregated network link and a second aggregated network link in response to the network device being in communication connection with the primary forwarding system and the standby forwarding system at the same time, wherein the first aggregated network link is connected to the primary forwarding system, and the second aggregated network link is connected to the standby forwarding system, wherein in response to the network device being determined as the target network device, the first aggregated network link and the second aggregated network link are maintained in an enabled state, and in response to the network device being not determined as the target network device, the first aggregated network link is maintained in an enabled state, and the second aggregated network link is adjusted to a disabled state.

7 . The method of claim 6 , wherein after performing data communication with the second forwarding device through the target network device, the method further comprises:
in response to detecting that the second aggregated network link is in a disconnected state, determining a new target network device from the candidate network devices other than the target network device according to the first system topology table; and performing data communication with the second forwarding device through the new target network device.

8 . The method of claim 5 , wherein the primary forwarding system at least further comprises a third forwarding device, and after saving the first topology information to the first system topology table, the method further comprises:
acquiring third topology information broadcast by the third forwarding device through an intermediate network device, and saving the third topology information to the first system topology table, wherein the intermediate network device is the network device that is connected to the first forwarding device and the third forwarding device at the same time, and the third topology information records a link topology between the third forwarding device and a network device connected to the third forwarding device.

9 . The method of claim 8 , wherein after saving the third topology information to the first system topology table, the method further comprises:
broadcasting the first topology information to the third forwarding device through the intermediate network device, such that the third forwarding device saves the first topology information to a third system topology table of the third forwarding device, wherein the third system topology table further comprises the third topology information stored therein.

10 . The method of claim 5 , wherein after performing data communication with the second forwarding device through the target network device, the method further comprises:
performing re-stacking with the second forwarding device in response to detecting that at least one of the stack links in the aggregated stack link is available; performing data communication according to an aggregated stack link obtained from the re-stacking; and sending second notification information to the network device, such that the network device re-aggregates the first aggregated network link and the second aggregated network link into an aggregated network link according to the second notification information.

11 . A fault processing method, applied to a network device, wherein the network device is in communication connection with a stacking system, and the stacking system comprises at least two forwarding devices, and the method comprising:
forwarding communication data between a first forwarding device and a second forwarding device in response to the network device bei

Assignees

• Zte Corp

Inventors

• Zhu Jie

Classifications

• H04L43/0811

  by checking connectivity · CPC title

• H04L43/0805

  by checking availability · CPC title

• H04L45/245

  Link aggregation, e.g. trunking · CPC title

• H04L45/28

  using route fault recovery · CPC title

• H04L45/22

  Alternate routing · CPC title