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An MSDP Peer Is Always in Down State
Fault Description
An MSDP peer is configured, but is always in Down state.
Fault Analysis
MSDP sets up a TCP connection between a local interface address and a remote MSDP peer.
- If the local interface address is different from the MSDP peer address configured on a remote device, the TCP connection cannot be set up.
- If two MSDP peers have no route to each other, the TCP connection cannot be set up.
Procedure
- Check whether the two devices that will be configured as
MSDP peers learn ARP entries from each other.
Run the display arp command to check whether two devices learn ARP entries from each other.
- Check whether there is a reachable unicast route between
two devices that will be configured as MSDP peers.
Run the display ip routing-table command to check whether there is a unicast route between the local MSDP peer and the remote MSDP peer.
- Check that the interface address of the MSDP peers is correct.
Run the display current-configuration command to check whether the local interface address is the same as the address of the MSDP peer.