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A method and device for optimizing routing

A routing and routing protocol technology, applied in the field of communication, can solve the problems of packet forwarding bypass and unreachable forwarding address, and achieve the effect of avoiding failure, ensuring high efficiency and reliability

Active Publication Date: 2011-12-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a method for optimizing routing and solve the problems of existing message forwarding detours and unreachable forwarding addresses

Method used

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  • A method and device for optimizing routing
  • A method and device for optimizing routing
  • A method and device for optimizing routing

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Embodiment Construction

[0036] The optimized routing method of the present invention solves the problems of detour forwarding and unreachable forwarding address by judging the validity of the forwarding address and performing different processing according to whether the forwarding address is valid.

[0037] The present invention provides a device for optimizing routing, including a routing calculation module and a forwarding address validity detection module, wherein,

[0038] The forwarding address validity detection module is used to detect whether the forwarding address in the protocol message is valid before calculating the route, and send the detection result to the route calculation module;

[0039] The route calculation module is used to calculate the route according to the detection result. If the forwarding address is valid, the forwarding address is used as the next hop, and if the forwarding address is invalid, the forwarding address is not used to calculate the route.

[0040] Such as ...

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Abstract

The invention discloses a method and device for optimizing routing. The method includes the following steps: (a) filling forwarding addresses in protocol messages when redistributing routes between protocols; (b) detecting Whether the forwarding address in the protocol message is valid; (c) calculate the route, if the forwarding address is valid, use the forwarding address as the next hop, if the forwarding address is invalid, do not use the forwarding address to calculate the route. The device includes a route calculation module and a forwarding address validity detection module. By adopting the method of the present invention, under the condition that the physical link permits, the situation of detour forwarding is avoided to the greatest possible extent; at the same time, if the forwarding address is unreachable due to the limitation of the physical link, the detour forwarding mode is adopted to avoid Routing fails, while ensuring the efficiency and reliability of routing.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for optimizing routing. Background technique [0002] In the entire IP Internet network, there are often multiple routing protocols. In order to ensure the normal forwarding of packets, there is a requirement to redistribute routes among different routing protocols. If two routing protocols are running on a link at the same time, and a routing protocol needs to import the route of another routing protocol, there may be a non-optimal route, that is, the so-called packet bypass problem, which aggravates the network protocol burden on border routers. [0003] For example: in figure 1 In this, A and C are connected through a RIP (Routing information Protocol, routing information protocol) protocol, and A and B are connected through an OSPF (Open Shortest Path First, open shortest path first) protocol. A learns the route to network N through RIP and advertises the rout...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04L45/28
Inventor 吴道揆
Owner ZTE CORP