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CISCO 1750 Serial interface line protocol not coming UP

Unanswered Question
Oct 5th, 2010
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After upgrading bandwidth from 128 Kbps to 256 Kbps, serial interface showing "Serial0 is up, line protocol is down" , is there any chance of issue with Framing config mismach or what all possibilities can be.


Kindly help me out to resolve the same issue....


Regards,


Rajesh Raghavan

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Mahesh Gohil Tue, 10/05/2010 - 23:49
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Hi rajesh,


Yes there is chance of framing mismatch if  younare using framed circuit.

please verify both end for same no. of timeslots


regards

Mahesh

mavespig Wed, 10/06/2010 - 00:08
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Hi Rajesh,

I assume your topology is something like this:


router ---- Telco CSU/DSU ----- Telco network/Internet


If the Telco increased just the bandwidth, I would expect that they didn't change the framing...

What is your original configuration and what did you change after the upgrade?


Marco

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