From: Jeongwoo Park (jpark@xxxxxxxx)
Date: Tue May 21 2002 - 19:59:44 GMT-3
Hmmm interesting !!
So, the router reflector can be confederation border router as well?
JP
-----Original Message-----
From: Michael C. Popovich [mailto:mpopovich@layer3.biz]
Sent: Tuesday, May 21, 2002 9:25 AM
To: ccielab@groupstudy.com
Subject: RE: BGP Confederations
The solution to this issue, with the appreciated help of Peter van Oene,
was a reachability problem on R5. R5 had the routes in the BGP table but
was unable to find a path to R8, where the routes originated from. I had
forgotten to add the next-hop-self command on R7.
That fixed the issue.
Thanks Peter for your help.
MP
-----Original Message-----
From: Michael C. Popovich
Sent: Tuesday, May 21, 2002 8:27 AM
To: ccielab@groupstudy.com
Subject: BGP Confederations
I have the following setup
R2--- frame----R6
|
f
r
a
m
e
|
R5(RR)----Ethernet----R7
|
point-to-point
|
R8
All of the above routers appear to be in AS200 to the outside. R2, R5, &
R6 are in AS65256. R7 & R8 are in AS65078. R5 is a route-reflector and
has peers with R2, R6 and R7. R7 & R8 have OSPF running and R7 is
redistributing those into BGP. R6 is advertisind an address of 200.0.0.6
in BGP. R5 has all the routes in it's BGP table but R2 has no routes and
R6 only has the route it is advertising. I have put "no synch" on all
BGP routers and all peer sessions show established.
Any thoughts would be very much appreciated.
Below are the BGP configurations for each one:
R2
router bgp 65256
no synchronization
bgp log-neighbor-changes
bgp confederation identifier 200
neighbor 150.50.24.4 remote-as 400
neighbor 150.50.100.5 remote-as 65256
neighbor 150.50.100.5 next-hop-self
neighbor 200.0.0.1 remote-as 100
neighbor 200.0.0.1 ebgp-multihop 255
no auto-summary
R5
router bgp 65256
no synchronization
bgp log-neighbor-changes
bgp confederation identifier 200
bgp confederation peers 65078
neighbor 150.50.100.2 remote-as 65256
neighbor 150.50.100.2 route-reflector-client
neighbor 150.50.100.2 next-hop-self
neighbor 150.50.100.2 send-community
neighbor 150.50.100.2 route-map local-AS out
neighbor 150.50.100.6 remote-as 65256
neighbor 150.50.100.6 route-reflector-client
neighbor 150.50.100.6 next-hop-self
neighbor 200.0.0.7 remote-as 65078
neighbor 200.0.0.7 ebgp-multihop 255
neighbor 200.0.0.7 next-hop-self
no auto-summary
route-map localAS permit 10
set community local-AS
R6
router bgp 65256
no synchronization
bgp log-neighbor-changes
bgp confederation identifier 200
network 200.0.0.6 mask 255.255.255.255
neighbor 150.50.100.5 remote-as 65256
no auto-summary
R7
router bgp 65078
bgp log-neighbor-changes
bgp confederation identifier 200
bgp confederation peers 65256
redistribute ospf 100 metric 1 match internal external 1 external 2
route-map ospf-subnets neighbor 150.50.5.69 remote-as 65078 neighbor
150.50.7.5 remote-as 65256 neighbor 150.50.7.5 update-source Loopback0
no auto-summary
access-list 1 deny 150.50.5.64
access-list 1 permit any
route-map ospf-subnets permit 10
match ip address 1
R8
router bgp 65078
bgp log-neighbor-changes
bgp confederation identifier 200
neighbor 150.50.5.68 remote-as 65078
no auto-summary
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