- NBR_CHG_DOWN
- NBR_CHANGE_E
- IF_CHG_E
The meanings are described as follows:
Feb 13 2009 17:10:52 LL-NE40E-1 %OSPF/3/NBR_CHG_DOWN(l): Neighbor event:neighbor state changed to Down. (ProcessId=1, NeighborAddress=10.0.97.129, NeighborEvent=InactivityTimer, NeighborPreviousState=Full, NeighborCurrentState=Down)
Log description: The neighbor relationship on the interface with the IP address 10.0.97.129 changed from the Full state to the Down state. The status change reason is InactivityTimer, meaning that no Keepalive message is received from the neighbor in the DeadInterval configured on the OSPF interface.
The other possible causes are listed below:- KillNbr: An interface or a BFD session went Down, or an OSPF process was reset.
- LLDown: A VLANIF, trunk, or serial interface went Down.
- SeqNumberMismatch: A fault occurred in route transmission between OSPF neighbors, or due to a transmission delay on links, the remote device received a Keepalive message from the local device after the OSPF neighbor relationship went Down and then sent a DD packet to the local device that is in the Full state.
May 10 2009 14:13:00 R13 %OSPF/6/NBR_CHANGE_E(l): Neighbor changes event: neighbor status changed. (ProcessId=1, NeighborAddress=100.113.114.114, NeighborEvent=1-Way, NeighborPreviousState=Full, NeighborCurrentState=Init)
Log description: The neighbor relationship on the interface with the IP address 100.113.114.114 changed from the Full state to the Init state. The status change reason is 1-way, meaning that the local device received a Hello packet requesting for initializing the neighbor relationship.
Reason for generating this log: The OSPF neighbor relationship on the remote device went Down, and the remote device sent an initialization packet to the local device. After having received the packet, the OSPF neighbor relationship on the local device also went Down.
May 12 2009 14:23:58 R13 %OSPF/6/IF_CHG_E(l): Interface 82.2.76.3 received event InterfaceDown, interface state changed from DR to Down. (Process ID=1)
Log description: The interface (where DR is configured) with the IP address 82.2.76.3 went Down. The status change reason is that the interface received a neighbor interface Down event. Usually a physical interface went Down.
The other possible causes are listed below:
NeighborChange: After the DR on a broadcast network went Down, the BDR became a DR.
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