[c-nsp] Identifying BGP route flapping

[Frank Bulk]

In summary, looks like we can:

-       Set up another router that has BGP dampening enabled

-       Execute a CLI command (show ip route | inc 00:00)

-       Monitor/measure SNMP traps in log

 

Too bad that it's all so indirect, but the good news is that we could script
it with cacti.

 

Frank

 

From: Ibrahim Abo Zaid [mailto:ibrahim.abozaid at gmail.com] 
Sent: Thursday, April 10, 2008 5:22 AM
To: frnkblk at iname.com
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Identifying BGP route flapping

 

Hi Frank 

 

you can use SNMP Notiications inform message to monitor BGP neighbor flaps ,
below is sample configuration can be used for a secure communication between
BGP router and NMS

 

1-define RO community string for SNMP communication between router and NMS

snmp-server community XXXX ro 10
access-list 10 deny any 

2-enable SNMP notifications 
snmp-server enable traps

3- enable SNMP BGP Informs notifcations 
snmp-server host A.B.C.D informs version 2 XXXX bgp 

 

regarding BGP MIB , kindly find below Cisco link 

 

http://tools.cisco.com/Support/SNMP/do/BrowseMIB.do?local=en
<http://tools.cisco.com/Support/SNMP/do/BrowseMIB.do?local=en&mibName=BGP4-M
IB> &mibName=BGP4-MIB

 

i hope that will solve ur problem :) 

 

best regards

--Abo Zaid



 

On 4/9/08, Frank Bulk <frnkblk at iname.com> wrote: 

We had an incident a little over a week ago where our upstream provider
(which managers our edge routers) told us that the BGP routes were flapping
between our two edge routers.

Is there a MIB that we can poll to monitor the number of changes in routing
tables, or BGP flaps?

Regards,

Frank

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