Solved

Over-riding BGP routing

Posted on 2015-01-29
2
148 Views
Last Modified: 2015-02-04
We have two ISPs into our building.  We have two identical Cisco routers, one for ISP A and one for ISP B.  They run BGP between them.  This results in most internet traffic traversing the ISP A circuit.  I have a high-bandwidth application that I'd like to run over ISP B to a particular, small subnet.

How can I override the default BGP routing that would traverse ISP A?  Is it a simple ip route statement pointing to the ISP B router as the gateway to that subnet?  Thank you for your help.
0
Comment
Question by:sloth10k
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 27

Accepted Solution

by:
davorin earned 250 total points
ID: 40578641
0
 
LVL 28

Assisted Solution

by:mikebernhardt
mikebernhardt earned 250 total points
ID: 40580211
It's easy to get your traffic to go via ISP B using local pref, etc. The part you can't easily control is having their traffic come BACK to you via ISP B, because that is dependent on the other party's routing table. But if that isn't an issue (most of the usage is outbound) then it's easy.

Note about the comment above: Weight is local to each router, not to your AS, so it will not help you in this case. I assume that you are running iBGP between your 2 routers, and if so local pref WILL help you.
0

Featured Post

Easy, flexible multimedia distribution & control

Coming soon!  Ideal for large-scale A/V applications, ATEN's VM3200 Modular Matrix Switch is an all-in-one solution that simplifies video wall integration. Easily customize display layouts to see what you want, how you want it in 4k.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
This article is a collection of issues that people face from time to time and possible solutions to those issues. I hope you enjoy reading it.
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

717 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question