Invention Grant
US08913485B2 Open shortest path first (OSPF) nonstop routing (NSR) with link derivation
有权
使用链路推导开放最短路径优先(OSPF)不间断路由(NSR)
- Patent Title: Open shortest path first (OSPF) nonstop routing (NSR) with link derivation
- Patent Title (中): 使用链路推导开放最短路径优先(OSPF)不间断路由(NSR)
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Application No.: US13350234Application Date: 2012-01-13
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Publication No.: US08913485B2Publication Date: 2014-12-16
- Inventor: Wenhu Lu , Ing-Wher Chen , Alfred C. Lindem, III
- Applicant: Wenhu Lu , Ing-Wher Chen , Alfred C. Lindem, III
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee Address: SE Stockholm
- Main IPC: H04L12/713
- IPC: H04L12/713 ; H04L12/757 ; H04L12/755 ; H04L12/751 ; H04L12/703

Abstract:
OSPF NSR with link derivation synchronization is described. When a network element having an active OSPF instance and a standby OSPF instance attempts to create a FULL adjacency with a neighbor network element using a neighbor data structure of the active OSPF instance, and if and when a switch causes the second OSPF instance to act as the active OSPF instance, neighbor information is retrieved from the LSAs of the standby OSPF instance and a link is derived between the network element and the neighbor network element based on the retrieved neighbor information. In one embodiment, the standby OSPF instance retrieves virtual neighbor information from its LSAs and derives a virtual link between the network element and the neighbor network element based on the retrieved virtual neighbor information without having to synchronize the neighbor information between the active and standby OSPF instance.
Public/Granted literature
- US20130070604A1 OPEN SHORTEST PATH FIRST (OSPF) NONSTOP ROUTING (NSR) WITH LINK DERIVATION Public/Granted day:2013-03-21
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