BGP backdoor and routing loops

From: Mark (ms6275@yahoo.de)
Date: Wed Oct 23 2002 - 10:13:17 GMT-3


If I use backdoor then the EBGP route should never defeat the IGRP routing by
my understanding.

R3 has 8 meg flash hence
IOS (tm) 2500 Software (C2500-INS-L), Version 12.0(23), RELEASE SOFTWARE (fc1)

Other peers
IOS (tm) 2500 Software (C2500-JOS56I-L), Version 12.1(17), RELEASE SOFTWARE
(fc1)

router bgp 65000
 network 137.20.200.16 backdoor
 network 137.20.200.18 backdoor
 redistribute static
 neighbor 137.20.200.18 remote-as 4
 neighbor 137.20.200.18 ebgp-multihop 2

04:16:48: RT: recursion error routing 137.20.200.18 - probable routing loop
04:16:48: RT: recursion error routing 137.20.200.18 - probable routing loop

I would like to see this all the time

r3#i 137.20.200.16
Routing entry for 137.20.200.16/28
  Known via "ospf 1", distance 110, metric 164, type extern 1
  Redistributing via ospf 1
  Last update from 137.20.100.34 on Serial0, 00:00:12 ago
  Routing Descriptor Blocks:
  * 137.20.100.34, from 137.20.100.34, 00:00:12 ago, via Serial0
      Route metric is 164, traffic share count is 1

But
r3#i 137.20.200.16
Routing entry for 137.20.200.16/28
  Known via "bgp 65000", distance 20, metric 0
  Tag 4, type external
  Last update from 137.20.200.18 00:00:06 ago
  Routing Descriptor Blocks:
  * 137.20.200.18, from 137.20.200.18, 00:00:06 ago
      Route metric is 0, traffic share count is 1
      AS Hops 2

http://127.0.0.1:8080/cc/td/doc/product/software/ios122/122cgcr/fiprrp_r/bgp_r
/1rfbgp2.htm#xtocid15



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