"Check connectivity ANY2ANY between Leaf" failure (when inter PODs)

[ksator]

The tests in the task Check connectivity ANY2ANY between Leaf (galaxy/junos_ping) of the playbook pb.check.underlay.yaml fail when it is cross POD tests.

• inside a POD it is OK.
• between PODs they fail.

Ideally we should rewrite this task.

They fail for 2 reasons:

• the task use ttl: 2 (between PODs we would need ttl: 4) (https://github.com/JNPRAutomate/ansible-junos-evpn-vxlan/blob/master/pb.check.underlay.yaml)
• the spines are configured with an export policy bgp-ipclos-out. The term term as-path doesnt advertise the routes from remote leaves to local leaves (so leaves on POD X doesnt learn the loopback of leaves on POD Y).
  Here's the policy (roles/underlay-ebgp/templates/main.conf.j2):

    policy-statement bgp-ipclos-out {
        term loopback {
            from {
                protocol direct;
                route-filter {{ loopback_ip }}/32 orlonger;
            }
            then {
{% if underlay.community is defined %}
                community add MYCOMMUNITY;
{% endif %}
                next-hop self;
                accept;
            }
        }
{% if underlay.community is defined %}
        term as-path {
            from {
                as-path asPathLength2;
                community MYCOMMUNITY;
            }
            then reject;
        }
{% endif %}