Selecting a router to terminate a T3 Circuit?

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Dec 4th, 2008
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We have a new T3 circuit to terminate.

Will a 2811 router, T3 module included, handle the job? I'd like to save the cost difference of a 3825 router.

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Collin Clark Thu, 12/04/2008 - 14:19
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A 3825 supports a DS3 with no services and 3845 supports a DS3 with services. Those are the minimums.

Hope that helps.

Joseph W. Doherty Thu, 12/04/2008 - 15:34
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With complex QoS, I've seen a 2811 handle about 20 Mbps (duplex) on a T3, where it tops out the CPU. From its Mpps rating, a 2851 might just about handle a T3, but haven't seen one in action.

Much depends on just how much traffic you'll routinely push across the T3. In my case of the 2811 on a T3, normal traffic doesn't usually exceed 10 to 15 Mbps on the T3, and at that volume level, it seems to work well.

archari Thu, 12/04/2008 - 16:22
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Are you just terminating the T3 for routing or will you be running any services over it?


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