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Without knowing anything about your configuration, the only thing that sounds familiar about your situation would be a route to a BGP neighbor address that continually bounces.

Depending on whether you are using eBGP or iBGP, this could be due to an interface continually flapping, incorrect multi-hop configuration or an underlying layer 3 issue that is causing the route to the BGP neighbor address to bounce.



-----Original Message-----
From: Bob Rosebrock <bob@knowledgecomputers.net>
Date: Thu, 03 May 2007 10:55:53
To:cisco-bba@puck.nether.net
Subject: [cisco-bba] 7206VXR not able to hold BGP table of any size.

Good Morning!!!



I have a 7206VXR that is not holding a BGP table of any size and contineully eats up the CPU and makes the router unusable.









Gratefully,

Bob Rosebrock









Building configuration...

 

Current configuration : 1292 bytes

!

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname border2

!

boot-start-marker

boot system disk0:c7200-jk9s-mz.124-3.bin

boot-end-marker

!

!

no aaa new-model

!

resource policy

!

ip subnet-zero

!

!

ip cef

ip domain list xxx.net

ip domain name xxx.net

ip name-server 38.113.xx.x

ip name-server 38.113.xx.x

!

!

ip ssh time-out 60

ip ssh authentication-retries 2

!

!

!

!

!

!

!

!

!

!

!

!

!

!

username xxx privilege 15 secret 5 <removed>

!

!

!

!

!

!

interface FastEthernet0/0

 no ip address

 shutdown

 duplex auto

 speed auto

!

interface FastEthernet0/1

 no ip address

 duplex full

 speed 100

!

interface FastEthernet1/0

 ip address 208.67.xxx.xxx 255.255.255.252

 duplex full

!

router bgp 32015

 no synchronization

 bgp log-neighbor-changes

 neighbor 208.67.xxx.x remote-as 32015

 no auto-summary

!

ip classless

ip route 0.0.0.0 0.0.0.0 208.67.xxx.x

!

no ip http server

no ip http secure-server

!

!

dialer-list 1 protocol ip permit

!

!

!

!

control-plane

!

!

!

!

!

!

gatekeeper

 shutdown

!

!

line con 0

 stopbits 1

line aux 0

 transport input all

 stopbits 1

line vty 0 4

 privilege level 15

 login local

 transport input ssh

line vty 5 15

 privilege level 15

 login local

 transport input ssh

!

!

end
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Bob Rosebrock <> wrote on Thursday, May 03, 2007 5:56 PM:

> Good Morning!!!
>
> I have a 7206VXR that is not holding a BGP table of any size and
> contineully eats up the CPU and makes the router unusable.
>
> interface FastEthernet1/0
> ip address 208.67.xxx.xxx 255.255.255.252
> duplex full
> !
> router bgp 32015
> no synchronization
> bgp log-neighbor-changes
> neighbor 208.67.xxx.x remote-as 32015
> no auto-summary
> !
> ip route 0.0.0.0 0.0.0.0 208.67.xxx.x

Chances are you receive the route to the BGP next-hop(s) via BGP, so
you'll end up in a recursion loop.
Two solutions (in the order of preference):

1) configure an IGP (OSPF, etc.) to provide reachability to the
next-hops
2) Assuming the "neighbor 208.67.xxx.x" is actually the adjacent
router's address on your FastEth1/0, manually change the next-hop on
this router using

neighbor 208.67.xxx.x route-map SET-NH in

route-map SET-NH
set ip next-hop peer-address

Hiding IP addresses in this case makes it difficult to properly
troubleshoot..

oli

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