I have two routers one (R1) with a ethernet link to ISP A and the other (R2) with a DS3 link to ISP B. All traffic is set to go over the ethernet on R1. It's also setup to run HSRP on the inside ethernet links so if R1 failed all traffic would go to R2 over ISP B. we have BGP running to also favor ISP A link when not in a failover.
My question is if we have a failure in the ethernet link (i.e. some cut the ethernet cable(stupid vendor!!!)) that stops all traffic out that link but the port will remain up how do I have it sense that the ethernet link is down or atleast not a vailid port and have all traffic fail over to the backup router.
Everywhere i look I see how to do it with serial links but nothing about a mix of serial and ethernet.
Thanks in advance I am sure there is a answer out there I am just not seeing it.
after reading the link it looks like the tracking of the line-protocol is what I want. Besides adding the tracking option to the outside ethernet interface on R1 what other configuration is needed? I can't see how I would configure the routers to get HSRP to work on the outside interfaces due to different IP addr ranges or I am just blind and not seeing the option I need.
Yes you can track even static routes that is what i had in mind. So point one default to the Ethernet link and track the route with say the next hop of ethernet. If the tracking fails it will switch over to tht serial link
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