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Bringing up Backup Internet connection

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Joined
Nov 15, 2003
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Location
CA
Here is a rough diagram of my setup

Internet--------------------------------Pix
| |
CiscoUBR--Cisco2500--Cat5500--Cat6500
|
SErver

I have two connections to the Internet. One via the Cat6500 that goes thru the PIX firewall is the main Internet connection used by my users. However, the server on the Cat5500 runs a critical application that needs to communicate with a server on the internet. So I setup a second internet connection via the CiscoUBR(and cable access)to allow only this one server get to the one server on the Internet that it needs to. I have all the access lists defined. The connection via the 6500 and PIX uses EIGRP while the other CiscoUBR connection uses static routing. I have configured the connection via the UBR as the primary link for reaching that one server on the internet (by using a static route in the Cat5500 RSM). I want to configure such that if the internet connection via the UBR is down it shoud use the connection via the PIX. Problem I have is that none of the internal links are ever down as they are Ethernet cables. I need to switch the route if the External(Cable) Interface of the UBR fails (the Ethernet interface which is next hop will still be up). Any sugestions on how to set this up (if necessary I can connect the UBR directly to the CAT5500).
 
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