cisco ospf neighbor - Why Does the show ip ospf neighbor...

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Why Does the show ip ospf neighbor Command Reveal Neighbors Stuck in Two-Way State? Document ID: 13683 Introduction Prerequisites Requirements Components Used Conventions How OSPF Forms Its Neighbors Why Do Routers Only Form Full Adjacencies with the DR or BDR? NetPro Discussion Forums - Featured Conversations Related Information Introduction This document explains why the show ip ospf neighbor command shows neighbors stuck in a two-way state. It also provides configuration tips. Prerequisites Requirements There are no specific requirements for this document. Components Used This document is not restricted to specific software and hardware versions. Conventions For more information on document conventions, refer to the Cisco Technical Tips Conventions. How OSPF Forms Its Neighbors In this topology, all routers are running Open Shortest Path First (OSPF) over the Ethernet network:
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This is sample output of the show ip ospf neighbor command on R7 and R8: R7# show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 170.170.3.4 1 2WAY/DROTHER 00:00:34 170.170.3.4 Ethernet0 170.170.3.3 1 2WAY/DROTHER 00:00:34 170.170.3.3 Ethernet0 170.170.3.8 1 FULL/DR 00:00:32 170.170.3.8 Ethernet0 170.170.3.2 1 FULL/BDR 00:00:39 170.170.3.2 Ethernet0 R8# show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 170.170.3.4 1 FULL/DROTHER 00:00:37 170.170.3.4 Ethernet0 170.170.3.3 1 FULL/DROTHER
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This note was uploaded on 06/13/2010 for the course CITX CITX 1150 taught by Professor P.whalen during the Fall '09 term at British Columbia Institute of Technology.

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cisco ospf neighbor - Why Does the show ip ospf neighbor...

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