[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

Over-riding BGP routing

Posted on 2015-01-29
2
Medium Priority
?
153 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
2 Comments
 
LVL 27

Accepted Solution

by:
davorin earned 1000 total points
ID: 40578641
0
 
LVL 28

Assisted Solution

by:mikebernhardt
mikebernhardt earned 1000 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

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

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

This article explains the fundamentals of industrial networking which ultimately is the backbone network which is providing communications for process devices like robots and other not so interesting stuff.
In this article I will be showing you how to subnet the easiest way possible for IPv4 (Internet Protocol version 4). This article does not cover IPv6. Keep in mind that subnetting requires lots of practice and time.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…

834 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