How to create EVPN session between two switches

[fzakfeld]

We are building an MPLS + iBGP backbone with IS-IS underlay. For connections towards a legacy layer-2 core, we want to use EVPN multihoming to create an L2 port channel terminating on two different Arista backbone switches.

I tried adding this structured config piece:

su_evpn_cfg_peer_groups:
  EVPN_LOCAL_PEER:
    type: evpn
    remote_as: 65001
    local_as: 65001

su_evpn_cfg_address_family_evpn:
  peer_groups:
  - name: EVPN_LOCAL_PEER
    activate: true

The generated structured config however includes peer_groups two times, one is from the general config and one from the snippet.

It generally feels like a workaround. Is there any good example (or can somebody provide one here) that we can follow?

[ClausHolbechArista]

Take a look at this section https://avd.arista.com/5.7/ansible_collections/arista/avd/roles/eos_designs/docs/input-variables.html#connected-endpoints-settings under the example dropdown "Example with EVPN A/A ESI dual-attached endpoint". I think that should do what you need.

We have a default key for connected endpoints called "switches" which seems fitting for this, so replace the top level servers with switches.