Vxlan mode set to user mode causes the routes that are advertised by control, doesn't have vxlan encapsulation bgp community

[Arijit Paul]

Vxlan mode set to user mode on Contrail controller causes the routes that are advertised by control, do not have vxlan encapsulation bgp community. On receiving these routes the route-reflector marks them as hidden as vxlan community is not present.

[Jeba Paulaiyan (jebap)]

Notes:

If VxLAN mode is set to user mode, Contrail controller advertises routes without VxLAN encapsulation BGP community to the Route Reflector. This make the Route Reflector mark those routes as hidden. Hence it is recommended to use VxLAN mode auto.

[Arijit Paul (arijitp)]

root@5b11-qfx5> show route summary
Autonomous system number: 64512
Router ID: 5.5.5.5

inet.0: 16 destinations, 16 routes (16 active, 0 holddown, 0 hidden)
              Direct: 5 routes, 5 active
               Local: 4 routes, 4 active
              Static: 7 routes, 7 active

:vxlan.inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden)
              Direct: 5 routes, 5 active
               Local: 4 routes, 4 active

bgp.l3vpn.0: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
                 BGP: 3 routes, 3 active

inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
              Direct: 1 routes, 1 active
               INET6: 1 routes, 1 active

bgp.rtarget.0: 8 destinations, 11 routes (8 active, 0 holddown, 0 hidden)
                 BGP: 10 routes, 7 active
             RTarget: 1 routes, 1 active

bgp.evpn.0: 8 destinations, 8 routes (2 active, 0 holddown, 6 hidden)
                 BGP: 8 routes, 2 active

{master:0}
root@5b11-qfx5> show route summary
Autonomous system number: 64512
Router ID: 5.5.5.5

inet.0: 16 destinations, 16 routes (16 active, 0 holddown, 0 hidden)
              Direct: 5 routes, 5 active
               Local: 4 routes, 4 active
              Static: 7 routes, 7 active

:vxlan.inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden)
              Direct: 5 routes, 5 active
               Local: 4 routes, 4 active

bgp.l3vpn.0: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
                 BGP: 3 routes, 3 active

inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
              Direct: 1 routes, 1 active
               INET6: 1 routes, 1 active

bgp.rtarget.0: 8 destinations, 11 routes (8 active, 0 holddown, 0 hidden)
                 BGP: 10 routes, 7 active
             RTarget: 1 routes, 1 active

bgp.evpn.0: 8 destinations, 8 routes (7 active, 0 holddown, 1 hidden)
                 BGP: 8 routes, 7 active

{master:0}
root@5b11-qfx5> show route summary
Autonomous system number: 64512
Router ID: 5.5.5.5

inet.0: 16 destinations, 16 routes (16 active, 0 holddown, 0 hidden)
              Direct: 5 routes, 5 active
               Local: 4 routes, 4 active
              Static: 7 routes, 7 active

:vxlan.inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden)
              Direct: 5 routes, 5 active
               Local: 4 routes, 4 active

bgp.l3vpn.0: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
                 BGP: 3 routes, 3 active

inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
              Direct: 1 routes, 1 active
               INET6: 1 routes, 1 active

bgp.rtarget.0: 8 destinations, 11 routes (8 active, 0 holddown, 0 hidden)
                 BGP: 10 routes, 7 active
             RTarget: 1 routes, 1 active

bgp.evpn.0: 8 destinations, 8 routes (7 active, 0 holddown, 1 hidd...

[Narendranath (nkarjala)]

This is not a Bug. User is supposed to set the "VxLAN Identifier" for the network for it to work with the "user configured" mode.

When "VxLAN Identifier Mode" is in Auto mode, VxLAN ID is assigned with the "Network ID". In case of "User Configured" mode, VxLAN ID will be assigned from the "VxLAN Identifier" of the network. This field property is to be configured by the user.

Since the "VxLAN Identifier" wasn't set, and when the system is put to "User configured", the routes aren't advertised.