Resolve a BGP next-hop with another BGP route

[Alarig Le Lay]

Hello,

It seems that bird can’t resolve the next-hop in that case. But there is
no issue when the next-hop is announced by OSPF.
bird> show route all for 45.91.127.1
Table master4:
45.91.127.0/24       unreachable [ibgp_hv02_ipv4 16:16:24.927 from 89.234.186.40] * (100/-) [i]
        Type: BGP univ
        BGP.origin: IGP
        BGP.as_path:
        BGP.next_hop: 89.234.186.116
        BGP.local_pref: 100
                     unreachable [ibgp_nominoe_ipv4 16:01:40.402 from 89.234.186.33] (100/-) [i]
        Type: BGP univ
        BGP.origin: IGP
        BGP.as_path:
        BGP.next_hop: 89.234.186.116
        BGP.med: 150
        BGP.local_pref: 100
        BGP.originator_id: 89.234.186.40
        BGP.cluster_list: 89.234.186.33
bird> show route all for 89.234.186.116
Table master4:
89.234.186.116/32    unicast [ibgp_hv02_ipv4 16:21:11.352] * (100/0) [i]
        via 89.234.186.40 on enp3s0f1.33
        Type: BGP univ
        BGP.origin: IGP
        BGP.as_path:
        BGP.next_hop: 89.234.186.40
        BGP.local_pref: 100
                     unicast [ibgp_nominoe_ipv4 16:20:22.754 from 89.234.186.33] (100/0) [i]
        via 89.234.186.40 on enp3s0f1.33
        Type: BGP univ
        BGP.origin: IGP
        BGP.as_path:
        BGP.next_hop: 89.234.186.40
        BGP.med: 150
        BGP.local_pref: 100
        BGP.originator_id: 89.234.186.40
        BGP.cluster_list: 89.234.186.33

But cisco works well:
asbr01#sh ip route 45.91.127.1
Routing entry for 45.91.127.0/24
  Known via "bgp 204092", distance 200, metric 150, type internal
  Last update from 89.234.186.116 00:07:07 ago
  Routing Descriptor Blocks:
  * 89.234.186.116, from 89.234.186.40, 00:07:07 ago
      Route metric is 150, traffic share count is 1
      AS Hops 0
      MPLS label: none
asbr01#ping 45.91.127.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 45.91.127.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
asbr01#
asbr01#sh ip route 89.234.186.116
Routing entry for 89.234.186.116/32
  Known via "bgp 204092", distance 200, metric 150, type internal
  Last update from 89.234.186.40 01:13:29 ago
  Routing Descriptor Blocks:
  * 89.234.186.40, from 89.234.186.40, 01:13:29 ago
      Route metric is 150, traffic share count is 1
      AS Hops 0
      MPLS label: none

Am I missing something?

Regards,
-- 
Alarig