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Redundant T1

I have T1 between two of our office , with 3620 and 3720 at end A and End B, i would like to add another T1 for redundancy , so that when one goes down traffic routed automatically to the other,, any info, articles to achieve this

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Re: Redundant T1

Use PPP multilink on either ends to load balance traffic. When one link fails, the failed link is dropped from the bundle, without an outage.

http://www.cisco.com/en/US/tech/tk713/tk507/technologies_configuration_example09186a00800a3b85.shtml

Does that help ?

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