Hello,
I have two peers configured as follows (I'm only including the config of the RR client, but the RR config is analogous):
RP/0/0/CPU0:PE4#show run router bgp 65000
router bgp 65000
address-family ipv4 unicast
additional-paths receive
additional-paths send
!
neighbor-group RR
remote-as 65000
capability additional-paths receive
capability additional-paths send
update-source Loopback0
address-family ipv4 unicast
route-policy PL-IBGP-RR-OUT out
!
!
neighbor 172.16.0.201
use neighbor-group RR
!
neighbor 172.16.0.202
use neighbor-group RR
!
=====
However, the capability is not negotiated:
RP/0/0/CPU0:PE4#show bgp neighbor 172.16.0.202 | include Additional
Additional-paths operation: None
Any clues?