JunOS : error: device ae0 not found

By | July 19, 2014

Having problem setting LACP interface on JunOS and got this “error: device ae0 not found” message?

root@EX4200> show lacp interfaces ae0
error: device ae0 not found

First, make sure the LACP interface members are properly configured :

Then make sure the LACP settings are correct :

The key parameter, as followed, you need to define how many aggregated interface you want to create on your device (max. of 32 per physical chassis unit) :

Commit the changes and the LACP interface should now appear :

(This example assume you wanted to aggregate interfaces ge-0/0/0 – 1 under “ae0”).