Notification method, notification system for changing network identity and network equipment

A technology of network identification and network equipment, applied in the field of communication, can solve the problems of wasting storage space and CPU resources, re-establishing services and neighbor relationships, and inability to release resources, and achieves the effect of avoiding restarts

Inactive Publication Date: 2009-12-09
HUAWEI TECH CO LTD
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Problems solved by technology

[0006] Dealing with network identity changes by restarting the protocol has adverse effects: 1) After the protocol is restarted, the business and neighbor relationship need to be re-established
On the existing network, the amount of data is large, and re-establishing the service is a very slow process. For example, it takes about 20 minutes for the OSPF process to restart and restore to th

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  • Notification method, notification system for changing network identity and network equipment
  • Notification method, notification system for changing network identity and network equipment
  • Notification method, notification system for changing network identity and network equipment

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[0022] Each active protocol process running on the router can be regarded as a network device, and each network device within the scope of an AS (Autonomous System) has a unique network identifier. This network identifier is very important for routing protocols such as OSPF, ISIS, MPLS, etc. For OSPF, this network identifier is Router ID, for ISIS, this network identifier is System ID, and for MPLS and LDP protocols, the network identifier is the router ID. The identification is the LSR ID, and the network identification is the prerequisite for configuring other protocol commands.

[0023] At present, there are many new technologies in data reliability forwarding, such as fast convergence and other technologies. However, these technologies seem incapable of changing the network identification, but sometimes the network identification has to be replaced. Taking OSPF as an example, the change of network identification mainly affects three aspects, (1) the invalidation of the neighbo...

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Abstract

The embodiment of the invention relates to the communication field and provides a notification method, a notification system for changing network identity and network equipment. When the network identity of the network equipment is updated, LSA in a notification message is changed according to the network identity of the network equipment, and a link status database and an adjacent list in which identity changing router information is stored are updated, thereby the invention avoids the restarting of the network equipment in the network, resource waste, and the like.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method, system and network equipment for notifying changes of network identifiers. Background technique [0002] Network identification is very important for routing protocols such as OSPF (Open Shortest Path First, shortest path first), ISIS (Intermediate System-to-Intermediate System, a link state routing protocol), MPLS (Multi-Protocol Label Switching), etc. Importantly, in an AS (Autonomous System, autonomous system), two identical network identifiers are not allowed to exist, and if the network identifier changes, other network devices will regard it as a new member. [0003] At present, when dealing with network identification changes, the entire protocol will be restarted, and the business will be interrupted. [0004] For example, the OSPF process changes the network identifier (Router ID) mainly by restarting the protocol. After the OSPF process is restarted, other netwo...

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Application Information

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IPC IPC(8): H04L12/24H04L12/56H04L29/06H04L12/755
Inventor 董辉魏秀刚傅超
Owner HUAWEI TECH CO LTD
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