Replacing CISCO 2600 Router

[all4it]

Currently we have a CISCO 2600 router handling our internet access on a fractional T1 dsu/csu module for fourteen employees and paying close to $1000.00 a month for the service from MCI. Last week we had an outage that shut us down for an extended time, which in turn had the president of the company mandating we have another internet connection for back up.

One small note, I have very little experience working with routers so any suggestions will be greatly appreciated. The CISCO router was set up by MCI and they maintain the configuration and my DNS entries.

I have called our local cable company and telephone company and we have come up with a solution. I will purchase a Linksys 10/100 8-port VPN router that has two wan ports, connect the DSL modem from the telephone company to one port and the cable modem to the other and let the router control the balancing.

My current configuration looks like this:
T1 Internet Connection>>>CISCO 2600>>>PIX501>>>switch

1.I will have to use IP addresses issued from our cable company and I know where I will have to change my PIX 501 firewall and servers but will the DSL side have any problems with the IP addresses from the cable company?

2.I will be changing my DNS provider from MCI to the cable company, can I enter my DNS records with the cable company and start the service and then delete my DNS records from the MCI DNS or will that create a conflict as to what address everything should go to?

Thanks,
Roy

 

[computerhighguy]

1) The DSL company could care less about the IP addresses from the cable company. Unless you are running BGP (which you can't), the two ISPs cannot route each others IP addresses. You could setup NAT so that if the main line fails, it will fail over to the cable company. This is kind of involved though.

2)It is all about your InterNIC DNS servers. If you go to networksolutions.com and look up your domain record, there are DNS servers associated with it. Those are the only servers that matter. I could configure your domain on DNS servers, but no one will ever query them unless the network solutions record has them as your primary DNS servers.


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