From: Fowlie, Colin (Colin.Fowlie@aliant.ca)
Date: Wed Jan 12 2005 - 01:06:54 GMT-3
P.S. I just labbed it and had to add these to my equivalent of R8 to get
the updates to take... but it is now working. Configs below...
-Colin
Different AS numbers, but same scenario:
ROUTER 3
router bgp 6501
no synchronization
bgp confederation identifier 6500
bgp confederation peers 6500
neighbor ebgp-r8 peer-group
neighbor ebgp-r8 remote-as 6500
neighbor ebgp-r8 ebgp-multihop 2
neighbor ebgp-r8 update-source Loopback99
neighbor ebgp-r8 soft-reconfiguration inbound
neighbor 172.16.99.3 peer-group ebgp-r8
R8
router bgp 6500
no synchronization
bgp confederation identifier 6500
bgp confederation peers 6501
network 142.167.1.0 mask 255.255.255.0
network 142.167.2.0 mask 255.255.255.0
neighbor ebgp-r3 peer-group
neighbor ebgp-r3 remote-as 6501
neighbor ebgp-r3 ebgp-multihop 2
neighbor ebgp-r3 update-source Loopback99
neighbor ebgp-r3 soft-reconfiguration inbound
neighbor 172.16.99.1 peer-group ebgp-r3
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Fowlie, Colin
Sent: Tuesday, January 11, 2005 11:59 PM
To: Anthony Sequeira; Cisco certification
Subject: RE: Help with Confederations!
You will have to still define the router as part of the confederation,
otherwise peers will reject updates as they will belong to their own AS.
So without changing the parent AS on R8, the following should get you up
and running:
R3
router bgp 65000
bgp router-id 5.5.3.3
bgp confederation identifier 100
- bgp confederation peers 61400
+ bgp confederation peers 61400 100
neighbor 5.5.1.1 remote-as 61400
neighbor 5.5.1.1 ebgp-multihop 3
neighbor 5.5.1.1 update-source Loopback0
+ neighbor 5.5.8.8 remote-as 100
+ neighbor 5.5.8.8 ebgp-multihop 3
+ neighbor 5.5.8.8 update-source Loopback0
R8
router bgp 100
bgp router-id 5.5.8.8
+ bgp confederation identifier 100
+ bgp confederation peers 61400 65000
+ neighbor 5.5.3.3 remote-as 6500
+ neighbor 5.5.3.3 ebgp-multihop 3
+ neighbor 5.5.3.3 update-source Loopback0
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