Posted on December 7, 2018 9:33 pm
 |  Asked by James Byrne
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My organization is developing lab scenarios to move our network towards implementing EVPN. Part of that process is to add the:
service routing protocols model multi-agent

We have found a few unique situations where the default behavior of routing (outside of BGP) has changed. For example:
OSPF summary routes not working
Static routes to unreachable next hops (while the interface is up) are not placed in the RIB.

I have been unable to find any documentation outside about what actually changes when implementing that command. Is there a white paper about it, or a list of default behaviors that changes between the two modes?


Same comment here

(Julien Coppi at December 10, 2018 7:07 pm)
Posted by Alexis Dacquay
Answered on December 7, 2018 10:38 pm

Hi James,

In term of configuration, you can verify whether anything previously configured is still active with ArBGP by entering the command:

show bgp configuration unsupported

It is quite important to verify this, to make sure everything you expect working (e.g. *was* working) is actually active.

Can you share your configs, to see what is involved in OSPF and BGP? I am just curious to see myself indeed such differences of behaviour.

If you are concerned something does not look right and you have some outputs demonstrating that, then maybe you can raise a case with the Arista TAC?


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