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New Member

What's the best way to set route for 3 offices

Hello, if there are 3 offices with 2 network domains, each has one 2611 router with dual wan ports. try to connect them in triangle topology: the ddn link is R1 to R2 to R3 to R1.

The purpose is to ensure the 3 offices can communicate with each other even when one of the 3 DDN lines is down.

What's the best way to set the route protocol? if use EIGRP, what are the commands. If static routes are needed, what commands are needed to append to the configuration.

Thanks,

Morris

3 REPLIES
Cisco Employee

Re: What's the best way to set route for 3 offices

In this easy scenario, you could just use static routes.

on R1:

ip route

ip route

Do the same for all the routers.

If you want to use EIGRP the commands are :

On R1:

router eipgr 100

network

network

network

no auto-summary

!

New Member

Re: What's the best way to set route for 3 offices

Do the router with only EIGRP knows the left and right neighbors? does default gateway need to be set for each router if the R1 network also connect to internet, other R2/R3 network need to use the internet also. Thanks!

Cisco Employee

Re: What's the best way to set route for 3 offices

if you decide to go for Eigrp, all the routers need to be setup for eigrp.

This is the idea of a dynamic routing protocol.

Everybody needs to speak the same language.

If R1 is connected to the internet, you need to either setup a static default on R2 and R3 pointing to R1, or you can rely on eigrp to propagate the default route.

You can do this by configuring a static default on R1 pointing to the Internet gateway and do a 'redistribute static' under eigrp.

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