Hello All ,
I am really having a very strange case , XR2 is a vpnv4 route refelctor . In the same time it is having a vrf FOO with a loop back configured in it . XR2 is having a multihop ebgp session with R4 . Problem is XR2 is sending the the Lo1 route to its iBGP peers but not to its EBGP peer !!! . And below is the logs I am getting
RP/0/0/CPU0::Nov 11 14:27:39.736 : bgp[139]: [upd] (vpn4u): No unreachable (not advertising imported path to non-CE neighbor) sent to sub-group 0.2 with v4Addr:10.0.0.20:1:172.16.0.19/32
RP/0/0/CPU0::Nov 11 14:27:39.737 : bgp[139]: [upd] (vpn4u): Skip UPDATE to sub-group 0.2 for v4Addr:10.0.0.20:1:172.16.0.5/32 (0), path , imported path table TBL:default (1/128)
RP/0/0/CPU0::Nov 11 14:27:39.737 : bgp[139]: [upd] (vpn4u): No unreachable (not advertising imported path to non-CE neighbor) sent to sub-group 0.2 with v4Addr:10.0.0.20:1:172.16.0.5/32
RP/0/0/CPU0::Nov 11 14:27:39.738 : bgp[139]: [upd] (vpn4u): Skip UPDATE to sub-group 0.2 for v4Addr:10.0.0.20:1:172.16.0.2/32 (0), path , imported path table TBL:default (1/128)
RP/0/0/CPU0::Nov 11 14:27:39.739 : bgp[139]: [upd] (vpn4u): No unreachable (not advertising imported path to non-CE neighbor) sent to sub-group 0.2 with v4Addr:10.0.0.20:1:172.16.0.2/32
RP/0/0/CPU0::Nov 11 14:27:39.739 : bgp[139]: [upd] (vpn4u): No unreachable (no label found) sent to sub-group 0.2 with v4Addr:10.0.0.20:1:172.16.0.20/32
RP/0/0/CPU0::Nov 11 14:27:39.740 : bgp[139]: [upd] (vpn4u): Updgen - TBL:default (1/128) UG: 0.4 SG: 0.2 msg: 3 pfx: [tot] adv/wdn/sup/skp/be [13] 3/0/0/10/0 ver: 0 -> 14 res ver: 0 -> 14 limits: wr/tot 50000/250000
RP/0/0/CPU0::Nov 11 14:27:39.740 : bgp[139]: [upd] (vpn4u): Generated 3 updates for update sub-group 0.2 (average size = 84 bytes, maximum size = 84 bytes)
RP/0/0/CPU0::Nov 11 14:27:39.741 : bgp[139]: [upd] (vpn4u): Updates replicated to neighbor 10.0.0.4
RP/0/0/CPU0:XR2#
Note that 172.16.0.20 is the Lo1 ip address that belong to vrf FOO
below is the config
===============================================================
interface Loopback1
vrf FOO
ipv4 address 172.16.0.20 255.255.255.255
ipv6 address 2001:172:16::20/128
!
interface Loopback0
ipv4 address 10.0.0.20 255.255.255.255
ipv6 address 2001:10::20/128
!
interface GigabitEthernet0/2/1/1.205
ipv4 address 10.0.205.20 255.255.255.0
ipv6 address 2001:10:0:205::20/64
dot1q vlan 205
!
interface GigabitEthernet0/2/1/1.220
ipv4 address 10.0.220.20 255.255.255.0
ipv6 address 2001:10:0:220::20/64
dot1q vlan 220
!
interface GigabitEthernet0/2/1/1.207
vrf FOO
ipv4 address 172.16.207.20 255.255.255.0
ipv6 address 2001:172:16:207::20/64
dot1q vlan 207
!
interface GigabitEthernet0/2/1/1.208
vrf FOO
ipv4 address 172.16.208.20 255.255.255.0
ipv6 address 2001:172:16:208::20/64
dot1q vlan 208
!
!
interface GigabitEthernet0/2/1/1.1920
ipv4 address 10.19.20.20 255.255.255.0
ipv6 address 2001:10:19:20::20/64
dot1q vlan 1920
vrf FOO
address-family ipv4 unicast
import route-target
1000:1
2000:1
!
export route-target
1000:1
!
!
!
route-policy PASS
pass
end-policy
!
router bgp 1000
address-family vpnv4 unicast
!
neighbor 10.0.0.2
address-family vpnv4 unicast
route-reflector-client
!
neighbor 10.0.0.5
remote-as 1000
update-source loopback0
address-family vpnv4 unicast
route-reflector-client
!
neighbor 10.0.0.19
remote-as 1000
update-source loopback0
address-family vpnv4 unicast
route-reflector-client
!
neighbor 10.0.0.4
remote-as 2000
ebgp-multihop
update-source loopback0
address-family vpnv4 unicast
next-hop-unchanged
route-policy PASS in
route-policy PASS out
!
vrf FOO
rd 10.0.0.20:1
address-family ipv4 unicast
network 172.16.0.20/32
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