Interface atm crc error

rleung2001 · ‎07-01-2008

I have a question about the different between 2 crc errors

ADSL circuit has packet loss, when I enter show dsl int atm 0/0/0.

The crc Errors and Header Errors are 0.

This is good.

When I enter show inter atm 0/0/0.

The crc value is incrementing when packet loss occurred.

What is/are the differece between 2 crc?

purohit_810 · ‎07-01-2008

Crc occur most of the reason, Physical layer issue. You can follow this link for step by step troubleshooting.

http://www.cisco.com/en/US/tech/tk39/tk48/technologies_tech_note09186a00800c93ef.shtml

Make sure, your cable is good,

Make sure your modem is configured good,

Check link releibility " Show interface " command.

check utilization of Link by " Show interface "

Thanks,

Dharmesh Purohit

bill.morton · ‎07-01-2008

The other day while troubleshooting I had a DSL circuit that had huge CRC and header errors on the sh dsl interface atm0/0/0; it ended up being the providers circuit. SNR went from 9db to 19db after they 'cleaned' the circuit and errors went away.

Do you have a spare WIC to test?