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Cisco OTV with two resilient links. Two join interfaces?

graham smart
Level 1
Level 1

Hello,

I have two ASR's connected via two diverse links. Each on its own respective /30

              /30

ASR1=======ASR2

             /30

 

I have OTV working across one of the /30's.

How can I have OTV use the second link but have it as a backup path ( as its less reliable and slower )

 

 

Any thoughts?

Thanks

L

-Graham
Please note: My comments are simply suggestions. I cannot be held liable for any loss of data, life or marbles due to following my instructions.

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2 Replies 2

Hello.

If you form port-channel of these two links, you would be able to run OTV with port-channel as a join interface (running XE3.10+).

Using loopback as join-interface is not supported yet (even in release 3.15).

Bilal Nawaz
VIP Alumni
VIP Alumni

Form a port-channel as Vasilii said BUT since you want to use it as backup you need to use the fast switchover supported on ASR, you can try it. Link with lowest priority wins and will always be active when available.

interface Po1

description OTV JOIN INTERFACE

lacp fast-switchover

lacp max-bundle 1

!

interface gi0/0/0

description PRIMARY OTV JOIN

channel-group 1 mode active

lacp port-priority 10

!

interface gi0/0/1

description SECONDARY OTV JOIN

channel-group 1 mode active

lacp port-priority 100

!

interface overlay 1

otv join-interface port-channel 1

 

hope this helps

Bilal

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