[c-nsp] OSPF Weird

[Alex Cruz Farmer]

Hi,

OSPF started flapping about 20 minutes ago, and the logs aren't showing anything remotely useful... 
Nothing has been plugged into the network, and none of the engineers have made any changes on said 
network.

MTU is 1500 across the network, which isn't the problem... There doesn't seem to be an inflated 
amount of traffic suggesting a loop. The CPUs on all the 6500s are all sub 10%.

If anyone has any suggestions, it would be greatly appreciated.

The logs all say, on the 6500s (sup2/msfc - 12.2.18-SXD6)

*Sep 21 14:52:33: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.13 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:52:33: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.4 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:52:33: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.2 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:52:41: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.13 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:52:43: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.4 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:52:47: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.13 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:52:51: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.13 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:52:51: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.4 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:52:51: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.2 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:53:04: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.4 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:53:04: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.13 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:53:04: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.2 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:53:30: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.4 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:53:30: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.13 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:53:30: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.2 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:54:27: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.13 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:54:27: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.4 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:54:27: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.2 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:54:28: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.2 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:54:34: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.13 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:54:34: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.4 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:54:34: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.2 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:54:34: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.4 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:55:06: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.13 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:55:07: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.2 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:55:11: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.13 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:55:11: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.4 on Vlan900 from LOADING to FULL, 
Loading Done
*Sep 21 14:55:11: %OSPF-5-ADJCHG: Process 1, Nbr 10.134.221.2 on Vlan900 from LOADING to FULL, 
Loading Done