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Community Member

CRC Errors on a 1841 router

Hi,

I see a lot of input CRC(cyclic redundancy check) errors on the serial port(1-Tcard) when I run the "show interface" command. Should I ignore it or try a new interface 1Tcard to eliminate the errors.

4 REPLIES
Community Member

Re: CRC Errors on a 1841 router

Hello, you can have a try with show controllers T1 and see if it is giving a lot of clock slips . the try to contact services provider. (clear counters and check this)

Community Member

Re: CRC Errors on a 1841 router

Hi Harish

I am not using a T1 card. I am using an HWIC-1T serial card. I had used the clear counter command earlier but still it is giving some errors but only a few. Can I afford to ignore it since no users are complaining and I beleive in crc errors the transmiting router will have to resend the packets.

Community Member

Re: CRC Errors on a 1841 router

Hello Sibin,

Can you clear counter and give me output of show conttroller of 10 minutes.. I would check whether that is normal..

Regards

Harish..

Community Member

Re: CRC Errors on a 1841 router

Yes I would defintly recommend clearing counters and perform sh controllers to get a baseline of errors on your network

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