OSPF bounces
Weird Problem between two Cisco devices. On one device we are seeing errors in the log (router A) %OSPF-5-ADJCHG: Process 1, Nbr x.x.x.x on VlanY from EXSTART to DOWN, Neighbor Down: Too many DBD retransmitions %OSPF-5-ADJCHG: Process 1, Nbr x.x.x.x on VlanY from DOWN to DOWN, Neighbor Down: Dead timer expired and on router B the head end router %DTP-SP-5-DOMAINMISMATCH: Unable to perform trunk negotiation on port Gi5/1 because of VTP domain mismatch. %EARL_L3_ASIC-SP-3-INTR_WARN: EARL L3 ASIC: Non-fatal interrupt Packet Parser block interrupt %MLS_STAT-SP-4-IP_LEN_ERR: MAC/IP length inconsistencies Now at first look this would seem to be a physical problem of some sort, we are not able to see any kind of errors, So on some investigation we discovered that the ARP table is not getting updated on the one side of the link. And the sniffer shows (from either side) the pings between the links source with the same IP address no matter where the traffic is coming from?? Then ...