three links with redundancy

miskoolak · ‎09-27-2008

Dear all

I have two sites.my remote site has two routers.there are three links to connect to HQ.

first link is dedicated leased line(on 1st router)

second link is using internet(2nd router)

and the third link is dialup(2nd router)

I wanto use GRE with Eigrp routing but dont know how to make redundancy accroding that there is two routers!

please post your opinions

Istvan_Rabai · ‎09-27-2008

Hi,

When you configure the GRE tunnel, you should configure the bandwidth and/or delay on the Tunnel interface so EIGRP calculates a higher metric for the routes through this interface compared to the metric through the leased line.

Then EIGRP will prefer to route traffic through the primary link (leased line).

Of course, eigrp neighbor relationships should be established between the 1st and 2nd routers using the branch internal LAN.

If you want to do some load balancing between the 2 links then you can play with the "variance" command to include or exclude the alternate path from the routing table.

Don't forget to apply the due security measures to the interface connecting to the Internet: acls, firewall etc.

Does this answer your question?

Cheers:

Istvan