Hi All,
I have an ios xe (asr 920/9XX) router that I have noticed that the OSPF neighbor will not re-establish an adjacency if it drops unless the 'mpls ip' command on the OSPF interface of the flapped link is toggled off and back on.
Here is an example OSPF interface. We notice the adjancy will only re-establish once the 'mpls ip' interface command is toggled off and back on on the port. I am able to ping the other end of the /30 prior to the OSPF re-establishing.
interface TenGigabitEthernet0/5/0
description Example
mtu 9000
ip address 10.10.10.1 255.255.255.252
no ip redirects
ip ospf dead-interval minimal hello-multiplier 5
ip ospf bfd
cdp enable
mpls ip
synchronous mode
bfd interval 50 min_rx 50 multiplier 3
