How to create a redundant connection

My new company has a small office, with internally hosted web / email / misc servers. We are linked to a fractional T1, and it normally works fine (normally being the key word). We had an outtage the other day, and I'd like to investigate the possibility of making things more redundant (even if that means just a backup ISDN line).

We have a linux firewall that feeds into a Cisco Catalyst 2926. Would this be fairly easy to connect two isp connections to? As you can see, I'm pretty green with this stuff, so keep it easy.

I'm envisioning having two ethernet cords (one from provider A, another from provider B), and then having to configure my router to balance the load between the two.

Is it even possible to have inbound web traffic split between two providers? I'm thinking that each provider would give me an IP, and I'd have to somehow configure DNS failover

Thanks,
Terry

 

 

 

 

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