[c-nsp] BGP Failover Question

[Steve McCrory]

It's not something that I have experience of deploying but Cisco has an
Optimised Edge Routing feature (aka Performance Routing) which you may
want to take a look at as it is designed for multi-homed scenarios.

Steven

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Chris Wallace
Sent: 21 February 2011 21:10
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] BGP Failover Question

I am looking for some help with an issue we recently had with one of our
BGP peers recently.  I currently have two DIA providers each terminated
into their own edge router and I am doing iBGP to exchange routes
between the two edge routers.  Last week Provider A made a policy change
"somewhere" in their network in the middle of the day causing traffic to
stop routing.  Of course this connection happens to be the preferred
route for the majority of our inbound and outbound traffic.  I never saw
our physical link go down and never saw our peer drop therefore BGP did
not stop advertising routes, this caused most of our customers traffic
to go nowhere.  In order to fix the issue I had to manually shutdown the
peer till Provider A confirmed the change they made had been reverted.
This isn't the first time we have seen this issue with our various
providers, how can I prevent issues like this from happening in the
future?

---Chris
_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/

--------
NetServices UK Ltd, Company No. 07118768,
Registered Office: Modwen Road, Waters Edge Business Park, SALFORD, M5 3EZ
--------