Network Design with Multiple Gateways

[Scott Hanson]

                 All,

remote location on MPLS circuit terminated on a Cisco router that has Internet connectivity through Central Site router.  We are installing a cable modem at the remote location that is to be used  as the Primary Internet Connection but still be able to use Internet through MPLS if the cable Internet goes down.  We want the failover/fallback to be handled automatically.

We have an ASA5505 for the cable Internet which then feeds into the ISPs modem.  Can someone suggest at a high level what is the best approach?

At first I was thinking about getting a module for the remote router so the cable Internet could be terminated on the remote router as well but that introduces a single point of failure.  I would also like to firewall both the MPLS and the cable Internet but if I do so on the ASA there is another single point of failure.

All replies rated.  Thanks in advance

[Gregory Snipes · Accepted solution]

Looks like a text book case for the use of IP SLAs and track routes.

Here is a guide on how to set them up on an ASA. If you have any questions please let me know.

[Scott Hanson]

Thanks Greg,

that did the trick!