Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Fail-Over/Shared Bandwith

What is the best Protocal to provide fail-over and shared bandwith (RIP, IGRP, EIGRP). We have




Currently the cpu's are idle. we have a total of 50 users located in the same office. Any Ideas?




Re: Fail-Over/Shared Bandwith

Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you. If you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center ( or speak with a TAC engineer. You can open a TAC case online at

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.

New Member

Re: Fail-Over/Shared Bandwith

It looks as if you have two isolated networks. Are any of the routers interconnected in any way? If so, you can just define a default route on both routers. Redistribute both into any of the protocols you mentioned. They will decide which is the closest (EIGRP has the greatest granularity of metric of the three listed). If one goes away, the other gets used.

If these T1s lead to an ISP, and you want to control traffic to/from the Internet, you will have to consider BGP and policy routing. Again, an interconnection between routers would be useful.