BGP and EIGRP help

Rupesh Kashyap · ‎04-28-2009

Hi, I have router A and B running BGP (5.0.0.0). I have created GRE Tunnel between them working on EIGRP(10.3.1.0).

I have published 10.50.0.0 both in BGP and EIGRP on router A. Now I am seeing EIGRP Tunnel as primary

on Router B. Ideally it should primary as BGP AD-20. Please help.

B>

* 10.50.0.0/16 5.0.0.1 0 65000 65040 i

*> 10.3.1.13 1561600 32768 ?

B>sh ip b 10.50.0.0

BGP routing table entry for 10.50.0.0/16, version 2104

Paths: (2 available, best #2, table Default-IP-Routing-Table)

Not advertised to any peer

65000 65040, (aggregated by 65040 6.0.0.1), (received & used)

5.0.0.1 from 5.0.0.1

Origin IGP, localpref 100, valid, external, atomic-aggregate

Local

10.3.1.13 from 0.0.0.0

Origin incomplete, metric 1561600, localpref 100, weight 32768, valid, sou

rced, best

Report Inappropriate Content · ‎04-28-2009

Harold Ritter · ‎04-29-2009

Rupesh,

The issue is that you are redistributing EIGRP into BGP on router B. This causes 10.50.0.0/16 to be seen as locally originated on router B (from 0.0.0.0) and to have a weight of 32768, which is preferred over the path received from router A via BGP.

Make sure you do not redistribute EIGRP routes received from router A back to router A via BGP and vice versa.

Regards

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

Rupesh Kashyap · ‎04-29-2009

yes sir. I got the same detail on Cisco site. Thanks for this big help.