Router log shows ( 10.10.10.2 is the peer router ):
Apr 14 04:05:06.592 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.301 from FULL to DOWN, Neighbor Down: Dead timer expired Apr 14 04:05:06.812 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.340 from FULL to DOWN, Neighbor Down: Dead timer expired Apr 14 04:05:21.961 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.301 from EXSTART to DOWN, Neighbor Down: Dead timer expired Apr 14 04:05:21.961 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.340 from EXSTART to DOWN, Neighbor Down: Dead timer expired Apr 14 04:05:22.405 HKT: %OSPF-4-NONEIGHBOR: Received database description from unknown neighbor 10.10.10.2 Apr 14 04:05:26.841 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.340 from LOADING to FULL, Loading Done Apr 14 04:05:29.725 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.301 from LOADING to FULL, Loading Done Apr 15 04:08:51.926 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.340 from FULL to DOWN, Neighbor Down: Dead timer expired Apr 15 04:08:52.539 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.301 from FULL to DOWN, Neighbor Down: Dead timer expired Apr 15 04:08:52.780 HKT: %HSRP-5-STATECHANGE: FastEthernet0/0.340 Grp
40 state Standby -> Active Apr 15 04:08:53.028 HKT: %HSRP-5-STATECHANGE: FastEthernet0/0.301 Grp 1 state Standby -> Active Apr 15 04:08:53.357 HKT: %HSRP-5-STATECHANGE: FastEthernet0/0.340 Grp 40 state Active -> Speak Apr 15 04:08:53.413 HKT: %HSRP-5-STATECHANGE: FastEthernet0/0.301 Grp 1 state Active -> Speak Apr 15 04:09:21.771 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.333 from EXCHANGE to DOWN, Neighbor Down: Dead timer expired Apr 15 04:09:21.779 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.301 from EXCHANGE to DOWN, Neighbor Down: Dead timer expired Apr 15 04:10:00.025 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.333 from LOADING to FULL, Loading Done Apr 15 04:10:07.530 HKT: %OSPF-5-ADJCHG: Process 10, Nbr 10.10.10.2 on FastEthernet0/0.301 from LOADING to FULL, Loading DoneAnybody finds any hint about this issue ?
Thanks so much