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Maximise throughput of Two data T1s

Hi,
Our company has one data T1 going through a Cisco 1721 router to a PIX 506e to the Catalyst switches. Everything is working fine but we have grown enough that one T1 will not handle the amount of internet traffic that we have. What will be needed to add another data T1 to the picture. Can I just add another WIC-1DSU-T1 to the router, configure it for the second WIC card and hope everything works fine from there.
Thanks

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Les Moore

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PennGwyn

There are several different scenarios for distributing load over multiple ISP connections. Some are simple and straightforward, others provide better failover, but are more complicated and (a) require coordination with (or assistance from) your ISP, and (b) may tax the resources of your current router.

You can get good general advice here, but you shouldn't be the first customer of your ISP to do this, and so your ISP should be able to advise you about which scenarios they can support.

pcsonwheels

ASKER

It looks like the T1 providers have supplied their own routers an adtran and a vina box. They are both from eschelon. Can I take the T1s right from the csu/dsu and run them into a cisco 1721 router with dual WIC's. Then have the ethernet line connect to the PIX 506e. And hopefully the Cisco 1721 will handle load balancing.

Thanks