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Routing device chain circuit state data synchronizing method

A link state and data synchronization technology, applied in the field of network communication, can solve the problems of slow LSDB synchronization and receiving router impact, and achieve the effects of reducing system pressure, improving synchronization speed, and avoiding message discarding and retransmission

Inactive Publication Date: 2008-09-17
粟怀军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these cases, the receiving router will be greatly impacted, and the speed of LSDB synchronization will be very slow

Method used

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  • Routing device chain circuit state data synchronizing method
  • Routing device chain circuit state data synchronizing method

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] Such as figure 1 As shown, the method for router link state data synchronization of the present invention comprises the following steps:

[0034] 101) When the sending router generates a new LSA or receives a new LSA, it adds the LSA to its own LSDB;

[0035]102) The sending router judges whether the receiving router is busy, if the receiving router is busy, then adds the LSA to the retransmission list corresponding to the receiving router in the sending router, and performs regular retransmission, otherwise immediately sends the LSA to receiving router;

[0036] 103) When receiving the LSA, the receiving router adds the LSA to the LSDB of the receiving router.

[0037] In step 102), after the sending router immediately sends the LSA to the receiving router, the sending router further includes: the sending router adds the LSA to the retransmission list to p...

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PUM

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Abstract

A method for synchronizing state data of router link includes adding LSA in its own LSDB when new LSA is generated by send router, judging whether receiving router is busy or not by send router and adding said LSA in retransmission list corresponding to receiving router in send router for carrying out fixed time retransmission if it is or otherwise sending said LSA immediately to receiving router, adding LSA in LSDB of receiving router when said LSA is received by receiving router.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for synchronizing router link state data. Background technique [0002] Routing information in the network is usually distributed and collected through Border Gateway Protocol / Interior Gateway Protocol (BGP / IGP). The shortest path first (OSPF) protocol belongs to the IGP, which is a dynamic routing protocol within a link-state-based autonomous system (AS) developed by the Internet Engineering Task Force (IETF). And pass the link state of the autonomous system to dynamically send and propagate the route. [0003] The OSPF protocol collects and diffuses network topology information and routing information through various link state messages (LSAs). The OSPF autonomous system is divided into one or more areas. Route-LLSA or Network-LSA packets are used to carry routes within an area; summary link-state packets ( Summary-LSA) carries routes. For the outside...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L7/00H04B7/26H04L29/06H04L12/755
Inventor 冯路
Owner 粟怀军