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chrism827

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Multiple Internet Lines - Two Buildings

Before I ask my question I want to explain our unique infrastructure.  We have two buildings across the street from eachother.  Building A has a T1 line serving about 40 computers.  Building B has two cable internet lines.  Both buildings are linked together with two Cisco Aironet 1300 Series ap's acting as a wireless bridge.

We want our cable lines to remain separate and not shared among certain departments.

My question is:  How can I set-up our network in such a way so that the T1 and the cable lines backup eachother?

In the future I would like to load balance as bandwidth is becoming an issue for us.  But for right now I would be happy with just backing up the connections.
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powercram

For the load balancing / bandwidth sharing you could use a higher-end router or firewall which will handle this.  It would require the cable and T1 in the same location.  One solution I've done before is with a SonicWALL Pro 3060 which will do the bandwidth sharing just fine.  It would be very difficult to accomplish both goals of limiting which users use which line and load balancing.
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Vinny Booth
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That's a great idea.  Thank you very much!