CISCO 1750 Serial interface line protocol not coming UP

[rajeshcrraj]

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

[Mahesh Gohil]

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]

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