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Method and device for rapidly handing over neighbor logical links

A logical link and fast switching technology, which is applied in the field of network communication transmission, can solve the problems that affect the rapid convergence of topology, the inability to establish neighbor relationships on suboptimal links, and the increase in operational complexity.

Active Publication Date: 2013-12-11
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the neighbor keeping time configured by the user is long, the suboptimal link will not be able to establish a neighbor relationship for a long time, which will affect the fast convergence of the topology.
Although users can modify the suppression time by changing the configuration, this will increase the complexity of user operations and reduce the ease of use

Method used

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  • Method and device for rapidly handing over neighbor logical links
  • Method and device for rapidly handing over neighbor logical links
  • Method and device for rapidly handing over neighbor logical links

Examples

Experimental program
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Effect test

Embodiment 1

[0043] There are more than two physical links between two neighboring SPB devices, and each physical link may establish a neighbor relationship. Assuming that the first logical link is a better (logical) link, it is established on one of the physical links, and an SPB neighbor relationship is established on the first logical link. In addition, there is at least one suboptimal link established on other physical links, which may be referred to as a second logical link in this embodiment. by figure 1 The shown schematic diagram of a networking structure in which the first logical link is a better link is taken as an example for illustration.

[0044] SPB1 and SPB2 are neighbor devices. There are two physical links A and B between them. There is a possibility of establishing a neighbor relationship on each physical link. Each SPB device has two interfaces a and b respectively. The link A is connected through interface a, and link B is connected through interface b. ISIS-SPB is ...

Embodiment 2

[0063] Method Embodiment 1 introduces the situation that the first logical link is a better link between the local SPB device and the peer SPB device. In this embodiment, the first logical link is used to establish the only physical link between SPB devices. Take the above as an example.

[0064] The corresponding physical link can still establish a neighbor relationship after the neighbor relationship fails, that is, there is only one physical link between two neighbor SPB devices, and the neighbor relationship between neighbor SPB devices can only be established on this physical link, but it can be established successively. A different logical link is established on this physical link. by figure 2 The first logical link shown is established on the only physical link between SPB devices as an example for illustration.

[0065] SPB1 and SPB2 are neighbor devices, and there is only one physical link C between them. A neighbor relationship is established on the physical link ...

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Abstract

The invention discloses a method and device for rapidly handing over neighbor logical links. Specifically, a local SPB device detects that a neighbor relationship failure event occurs in a first logical link interface of the local SPB device, and the first logical link interface is an interface corresponding to a first logical link; the local SPB device sends a first Hello message with the neighbor keeping time being zero to an opposite end SPB neighbor device through the first logical link, the opposite end SPB neighbor device updates the neighbor keeping time corresponding to the first logical link, and the neighbor relationship built on the first logical link is deleted after the neighbor keeping timeout; the local SPB device sends a second Hello message with the neighbor keeping time not being zero to the opposite end SPB neighbor device through the other logical links, and the neighbor relationship between the local SPB device and the opposite end SPB neighbor device is rebuilt on one of the other logical links, wherein the other logical links are logical links, except for the first logical link, between the local SPB device and the opposite end SPB neighbor device.

Description

technical field [0001] The invention relates to the technical field of network communication transmission, in particular to a method and equipment for quickly switching neighbor logic links. Background technique [0002] Intermediate System to Intermediate System-Shortest Path Bridging (ISIS-SPB, Intermediate System to Intermediate System-Shortest Path Bridging) is a way to share information between SPB nodes in the Shortest Path Bridging (SPB, Shortest Path Bridging) network, and interact on the backbone link ISIS-SPB protocol packets establish ISIS neighbors according to relatively strict rules and synchronize link state information. After intermediate system to intermediate system (ISIS, Intermediate System to Intermediate System) synchronization, each node has all node information and link information in the entire network, forming a public information database, and ensuring that the information is updated in a timely manner. Based on this information, each node uses a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/707H04L12/721H04L12/26H04L45/24
Inventor 杨裕斌张海生周万
Owner NEW H3C TECH CO LTD
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