I ran into a situation where members of an OSPF area all saw a (pair of) neighbors up, but those routers didn't show any of the other area members up. Unable to ping to the weird routers.
Several Cisco 7500s and Cat5500/multi-RSM routers in the area. VLAN 2 and 3 (on different physical links and intervening switches) on all devices for redundancy. Link state up on all interfaces. The two RSMs (the "weird" routers) in one 5500 chassis did not show any VLAN 3 neighbors other than within the same chassis. All other routers see each other and the weird routers. I moved the fiber uplink on the weird 5500 chassis to the other port on the same Sup-III (standby Supervisor) and everything came up. Any idea on the cause? More importantly, how was an OSPF adjaceny able to come up unidirectionally? Thanks! _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
