Dynamic tunneling is a method used to create tunnels dynamically based on certain conditions, rather than configuring them statically. Once the migration is done, there should be a reboot performed. But after reboot, if the dynamic tunnels do not come up many times. 

Once the migration is done, there should be a reboot performed. But after reboot, the dynamic tunnels do not come up in many cases, then collect the below outputs from the customer pre and post-reboot and find out the discrepancies.

Collect the below output from the customer in a MW:

cprod -A fpc0 -c 'set dcbcm bcmshell "l3 egress show"' | egrep "(Entry|100004)"
show route summary
show bgp summary
show mpls lsp
show route table inet.3
show route table inet.3 <IP> extensive
show route table inet.3 <IP> extensive
show route <tunnel-endpoint ip> extensive
show dynamic-tunnels database terse 
show dynamic-tunnels database 
show dynamic-tunnels database summary

Kindly collect the output of the above commands once the IP-IP tunnels are up. Perform the reboot, and again collect the above logs to provide to  JTAC Support for further investigation.Doing this will help us in understanding the discrepancies pre and post reboot.

Published on 29 Dec