Routing
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Posts: 12
Registered: ‎04-12-2016

Routing on EX switch broken after changing from VC to non VC - solved

I'm posting this mostly in case someone else comes across it.

 

We had an EX4500 which was configured to be a virtual chassis but the 2nd member (of 2 total) was removed by an unscrupulous person. It was my job to upgrade it, and convert it back to a single switch (router).

 

I had the config but I forgot to remove the "set routing-options nonstop-routing" statement from the config when I re-applied it. I had already deleted the rest of the virtual chassis commands.

 

This statement is accepted by the switch when you commit, even when you don't have a virtual chassis setup. And in my case it disabled routing completely.

 

Normally there is an IP address next to a port if you do "show interfaces terse" or "show interfaces routing". In my case the IP address was not there.

 

Also show route showed no default route, despite a default route being clearly set in the config.

 

Deleting the "set routing-options nonstop-routing" statement magically fixed routing. Took me a while to figure it out. While the site was down.

 

Hopefully someone comes across this and it solves their problem.