BGP next hop recursive resolution using other BGP routes

By default, BGP routes are not considered when a BGP next hop requires recursive resolution. They are considered when recursive-next-hop is enabled. Recursive resolution will resolve to one level.

To consider BGP routes for recursive resolution of next hops:

config router bgp
    set recursive-next-hop enable
end

Example

To see the change in the routing table when the option is enabled:

1. Check the BGP routing table:

   # get router info routing-table bgp
   Routing table for VRF=0
   B       10.100.1.4/30 [200/0] via 10.100.1.14 (recursive is directly connected, R560), 00:02:06

2. Enable BGP routes for recursive resolution of next hops:

   config router bgp
       set recursive-next-hop enable
   end

3. Check the BGP routing table again:

   # get router info routing-table bgp
   Routing table for VRF=0
   B       10.100.1.4/30 [200/0] via 10.100.1.14 (recursive is directly connected, R560), 00:02:15
   B       172.16.203.0/24 [200/0] via 10.100.1.6 (recursive via 10.100.1.14, R560), 00:00:06

   The second BGP route's next hop is now recursively resolved by another BGP route.