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Router equipment and router updating method

A router and link state update technology, applied in the field of data communication, which can solve problems such as interruption of flow and inability to select packet forwarding.

Inactive Publication Date: 2010-06-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Obviously, in this case, within 21 minutes, other routers on the network cannot immediately perceive the change of the link state on this router, so they will not be able to choose an optimal path for a long time. Packet forwarding, or even disconnection

Method used

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  • Router equipment and router updating method
  • Router equipment and router updating method
  • Router equipment and router updating method

Examples

Experimental program
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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] figure 1 It is a schematic diagram of a router device according to the first embodiment of the present invention. Such as figure 1 As shown, the router device includes a link state update module, a link state delete module, a routing information calculation module and a link state database.

[0036] Among them, the routing state update module sends out the pruning (PURGE) message after sending the link state message of the maximum sequence number to notify other routers on the network to delete the link state message of the maximum sequence number, and sends the PURGE message after sending the link state message of the maximum sequence number. A link state message with a sequence number of 1 is sent at a predetermined time after the message.

[0037] After receiving the prune message, other router devices on the network will delete the link state message wi...

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PUM

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Abstract

The invention relates to router equipment and a router updating method. The router equipment comprises a link state updating module, a link state deleting module, a route information computation module and a link state database. A route state updating module sends out a prune message after sending out a link state message with the maximum serial number to inform other router equipment on the network to delete the link state message with the maximum serial number, and sends out a link state message the serial number of which is 1 in the preset time after the prune message is sent out. The link state deleting module deletes the link state message with the maximum serial number of the router equipment sending out the prune message from the link state database when receiving the prune message from the network. The route information computation module calculates the route information according to the link state message received from the network and stores the link state message received from the network in the link state database. Cutoff possibly generated when the serial number of the message is overturned can be avoided according to the router equipment and method.

Description

technical field [0001] The invention relates to the field of data communication, and more particularly relates to a router device and a method for updating routing information. Background technique [0002] Intermediate System-to-Intermediate System (ISIS, Intermediate System-to-Intermediate System) routing protocol is a dynamic routing protocol based on link state. In the ISIS routing protocol, the router device floods the link state message generated by itself in the network (the link state message contains the link state information), so that all other router devices on the entire network can learn the same The link state of the network is calculated by using the link state to obtain the routing information on the network. [0003] A very important symbol of the link state message is the sequence number. Link state messages generated by routing devices all carry sequence numbers, and the sequence numbers change from 0 to the maximum sequence number according to the orde...

Claims

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Application Information

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IPC IPC(8): H04L12/56
Inventor 李庆宁
Owner ZTE CORP