RE: BGP Route Reflection

From: jeffkesemeyer (jeffkesemeyer@xxxxxxxxxxxxx)
Date: Sat Feb 03 2001 - 22:08:33 GMT-3


   
Add the "neighbor <ip-address> ebgp-multihop option, since you are using
update-source you need to increase the hop count.

        Jeff Kesemeyer

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Moran, Ed
Sent: Saturday, February 03, 2001 7:44 PM
To: 'ccielab@groupstudy.com'
Subject: BGP Route Reflection

I am having problams with BGP Route Reflection. R3, my RR, is not reflecting
routes to clients or between clients. All neighbors are Established. Here is
the config for R3's BGP.

router bgp 1
 bgp router-id 138.1.3.3
 network 138.1.0.0
 neighbor 138.1.1.1 remote-as 1
 neighbor 138.1.1.1 update-source Loopback0
 neighbor 138.1.1.1 route-reflector-client
 neighbor 138.1.4.4 remote-as 1
 neighbor 138.1.4.4 update-source Loopback0
 neighbor 138.1.4.4 route-reflector-client
 neighbor 138.1.5.5 remote-as 1
 neighbor 138.1.5.5 update-source Loopback0
 neighbor 138.1.5.5 route-reflector-client
 neighbor 150.10.9.2 remote-as 6

138.1.1.1 - R1
138.1.4.4 - R4
138.1.5.5 - R5
150.10.9.2 - R6

R3 has all routes as shown.

R3#sh ip bgp
BGP table version is 3, local router ID is 138.1.3.3
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network Next Hop Metric LocPrf Weight Path
*> 138.1.0.0 0.0.0.0 0 32768 i
* i 138.1.5.5 0 100 0 i
* i 138.1.4.4 0 100 0 i
* i 138.1.1.1 0 100 0 i
* i140.10.0.0 138.1.1.1 0 100 0 i
*> 150.10.0.0 150.10.9.2 0 0 6 i
* i160.10.0.0 160.10.9.6 0 100 0 2 i

140.10.0.0 is being advertised by R1, 150.10.0.0 is being advertised by R6,
and 160.10.0.0 is being received by R5. R5 originally receivd the routed
from R2 vie EBGP.

R1 has IP BGP = 138.1.0.0, 140.10.0.0, and 150.10.0.0
R4 has IP BGP = 138.1.0.0, and 150.10.0.0
R5 has IP BGP = 138.1.0.0, 150.10.0.0, and 160.10.0.0
R6 has IP BGP = 138.1.0.0, and 150.10.0.0
R2 has IP BGP = 138.1.0.0, and 160.10.0.0

Can anyone help me discover why the routes won't "sychronize"? I am not
using any route-maps or special commands. This is only a basic config. R5,
R1, R3, and R4 are all part of AS 1 and use OSPF as the IGP. All routes in
the OSPF domain are sychronized. Please help...



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