| 摘要 |
<P>PROBLEM TO BE SOLVED: To make it possible to update a route by optimally setting the order of the link state notification, active route calculation, and standby route calculation when topology is changed. <P>SOLUTION: A route information update system updates a route of a packet flowing through a communication network configured by connecting a plurality of nodes 100 with links. If each node updated a network topology information DB 11, it updates the route according to any one of the following processing procedures: it (1) finishes processing of a link state transfer unit 23 and an active route calculation unit 24, and then performs processing of a standby route calculation unit 25; (2) finishes processing of the standby route calculation unit 25, and then performs processing of the link state transfer unit 23 and the active route calculation unit 24; or (3) finishes processing of the active route calculation unit 24 and the standby route calculation unit 25, and then performs processing of the link state transfer unit 23. <P>COPYRIGHT: (C)2013,JPO&INPIT |
