Krishna_251070
Aug 07, 2018Nimbostratus
OSPF stuck in Exstart
Hello,
I am facing an issue with enabling OSPF between a Cisco Router and F5 LTM. The OSPF adjacency process is getting stuck at exstart phase.
This is how my toplogy looks like:
Cisco Router<-------Cisco L2 Switch------->F5 LTM
LTM-01[2]>show ip os neighbor
OSPF process 26:
Neighbor ID Pri State Dead Time Address Interface
10.10.26.9 1 ExStart/Backup 00:00:37 172.16.207.2 /Inbound
10.10.26.10 1 ExStart/DROther 00:00:34 172.16.207.3 /Inbound
LTM-01[2]>
From debug in Cisco Router:
863027: Aug 7 11:37:12.920 PDT: OSPF-26 ADJ Gi0/1: Send DBD to 172.16.207.254 seq 0x238E opt 0x52 flag 0x7 len 32
863028: Aug 7 11:37:12.920 PDT: OSPF-26 ADJ Gi0/1: Retransmitting DBD to 172.16.207.254 [8]
Here I can see that the router is actively sending DBD packets to F5, but no reply back.
All the device are running interface MTU of 1500 bytes. I am not sure how to debug OSPF in F5 device.
Any help would be appreciated!