I have what may appear to be a silly question, but I'm hoping someone can clarify this for me. My current company has 3 offices. There is a central hub, and two satellite offices. Right now, we have a T1 between the HUB and the satellite offices. With the current setup, if the central hub fails, the two satellites cannot talk. That's something I'm going to address. But my question revolves around the connection from each satellite to the HUB. Those connections are each a T1 right now, with an ISDN backup. The ISDN is slow and expensive, and I'd like to replace it - possibly with a cable modem. However, after speaking to the cable vendor, I'm confused. Can we use a cable modem for this purpose without a VPN device? We currently have our CISCO equipment set to automatically go to ISDN when the T1 is unavailable. Can't we do the same with a cable modem?
As a disclaimer, I'm by NO means a Cisco person. To this point, I've focused mainly on the Windows architecture, but I'm trying to learn routers/switches, etc. If anyone can simplify the process, or explain it in terms a Cisco Idiot like me could understand, I'd be very grateful.
Thanks for your help!