From: Huan Pham (huan.pham@valuenet.com.au)
Date: Thu Dec 13 2007 - 01:50:23 ART
Hi Bradford,
It seems that you use Loopback IP of 170.241.127.228 on both router.
In order for BGP to form, you need to allocate unique IP as BGP neighbor ID
for each router. May be it's good idea to nail down the BGP ID using
router-id x.x.x.x under BGP.
Cheers,
Huan
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Bradford Hung
Sent: Thursday, 13 December 2007 2:49 PM
To: ccielab@groupstudy.com
Subject: BGP identifier wrong
Hi All,
R4 and R5 are directly connecting and running OSPF and BGP, but BGP is not
working as follow:
r5#sho ip bgp sum
BGP router identifier 170.241.127.228, local AS number 100
BGP table version is 1, main routing table version 1
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
144.1.1.1 4 100 12 12 1 0 0 00:04:24 0
144.2.2.2 4 100 11 12 1 0 0 00:04:15 0
144.4.4.4 4 100 10 10 0 0 0 never Active
r4#sho ip bgp sum
BGP router identifier 170.241.127.228, local AS number 100
BGP table version is 1, main routing table version 1
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
144.1.1.1 4 100 13 13 1 0 0 00:05:08 0
144.2.2.2 4 100 12 13 1 0 0 00:05:04 0
144.5.5.5 4 100 10 10 0 0 0 never Idle
And following is the error message:
r4#
8w2d: %BGP-3-NOTIFICATION: received from neighbor 144.5.5.5 2/3 (BGP
identifier wrong) 4 bytes AAF17FE4
r5#
*Dec 13 04:12:15.599: %BGP-3-NOTIFICATION: sent to neighbor 144.4.4.4 2/3
(BGP identifier wrong) 4 bytes AAF17FE4
r5# FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF 0035 0104 0064 00B4 AAF1 7FE4
1802 0601 0400 0100 0102 0601 0400 0100 8002 0280 0002 0202 00
Config:
R5:
router ospf 100
router-id 144.5.5.5
log-adjacency-changes
network 133.1.1.0 0.0.0.255 area 0
network 144.5.5.5 0.0.0.0 area 0
network 170.241.127.228 0.0.0.0 area 0
!
router bgp 100
no synchronization
bgp log-neighbor-changes
neighbor 144.1.1.1 remote-as 100
neighbor 144.1.1.1 update-source Loopback0
neighbor 144.2.2.2 remote-as 100
neighbor 144.2.2.2 update-source Loopback0
neighbor 144.4.4.4 remote-as 100
neighbor 144.4.4.4 update-source Loopback0
no auto-summary
!
address-family vpnv4
neighbor 144.1.1.1 activate
neighbor 144.1.1.1 send-community both
neighbor 144.1.1.1 next-hop-self
neighbor 144.2.2.2 activate
neighbor 144.2.2.2 send-community both
neighbor 144.2.2.2 next-hop-self
neighbor 144.4.4.4 activate
neighbor 144.4.4.4 send-community both
neighbor 144.4.4.4 next-hop-self
exit-address-family
!
address-family ipv4 vrf client01
redistribute connected metric 200
neighbor 133.1.59.9 remote-as 65005
neighbor 133.1.59.9 activate
no synchronization
exit-address-family
!
R4:
r4#sb ospf 100
router ospf 100
router-id 144.4.4.4
log-adjacency-changes
network 133.1.1.0 0.0.0.255 area 0
network 144.4.4.4 0.0.0.0 area 0
network 170.241.127.228 0.0.0.0 area 0
!
router bgp 100
no synchronization
bgp log-neighbor-changes
neighbor 144.1.1.1 remote-as 100
neighbor 144.1.1.1 update-source Loopback0
neighbor 144.2.2.2 remote-as 100
neighbor 144.2.2.2 update-source Loopback0
neighbor 144.5.5.5 remote-as 100
neighbor 144.5.5.5 update-source Loopback0
!
address-family ipv4 vrf client01
redistribute connected metric 200
neighbor 133.1.48.8 remote-as 65004
neighbor 133.1.48.8 activate
no auto-summary
no synchronization
exit-address-family
!
address-family vpnv4
neighbor 144.1.1.1 activate
neighbor 144.1.1.1 next-hop-self
neighbor 144.1.1.1 send-community both
neighbor 144.2.2.2 activate
neighbor 144.2.2.2 next-hop-self
neighbor 144.2.2.2 send-community both
neighbor 144.5.5.5 activate
neighbor 144.5.5.5 next-hop-self
neighbor 144.5.5.5 send-community both
exit-address-family
!
Please advise.
Thanks,
This archive was generated by hypermail 2.1.4 : Tue Jan 01 2008 - 12:04:30 ARST