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nihammimm
Beginner

Input error and CRC error on WAN interface.

Hi,

I have noticed input error and CRC error on our mpls wan interface , but we dont have packet drops or communication issue now.

Is it normal for WAN interfaces ?

Regards,

2 ACCEPTED SOLUTIONS

Accepted Solutions
Dennis Mink
Advisor

What sort of interface is it?

if its ethernet and you connect to your provider on it, make sure you verify the duplex settingss. some providers set their interface to "auto" rather then hard set . This can cause CRC errors and no drops, but serious performance degradation.

Just a thought

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View solution in original post

Joseph W. Doherty
Hall of Fame Expert

isclaimer

The  Author of this posting offers the information contained within this  posting without consideration and with the reader's understanding that  there's no implied or expressed suitability or fitness for any  purpose.  Information provided is for informational purposes only and  should not be construed as rendering professional advice of any kind.  Usage of this  posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever  (including, without limitation, damages for loss of use, data or  profit) arising out of the use or inability to use the posting's  information even if Author has been advised of the possibility of such  damage.

Posting

Agree with Alain, but want to emphasis it should be a very small percentage.

Cisco says (for serial lines):

Note

Any  input error value for cyclic redundancy check (CRC) errors, framing  errors, or aborts above 1 percent of the total interface traffic  suggests some kind of link problem that should be isolated and repaired.

Personally I prefer no worst than 1 in 1,000 or even better 1 in 10,000.

View solution in original post

4 REPLIES 4
cadet alain
Advisor

Hi,

Yes it could be as long as they are a small percentage of total input packets.

Regards.

Alain.

Don't forget to rate helpful posts.
Dennis Mink
Advisor

What sort of interface is it?

if its ethernet and you connect to your provider on it, make sure you verify the duplex settingss. some providers set their interface to "auto" rather then hard set . This can cause CRC errors and no drops, but serious performance degradation.

Just a thought

Please remember to rate useful posts, by clicking on the stars below.

View solution in original post

Joseph W. Doherty
Hall of Fame Expert

isclaimer

The  Author of this posting offers the information contained within this  posting without consideration and with the reader's understanding that  there's no implied or expressed suitability or fitness for any  purpose.  Information provided is for informational purposes only and  should not be construed as rendering professional advice of any kind.  Usage of this  posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever  (including, without limitation, damages for loss of use, data or  profit) arising out of the use or inability to use the posting's  information even if Author has been advised of the possibility of such  damage.

Posting

Agree with Alain, but want to emphasis it should be a very small percentage.

Cisco says (for serial lines):

Note

Any  input error value for cyclic redundancy check (CRC) errors, framing  errors, or aborts above 1 percent of the total interface traffic  suggests some kind of link problem that should be isolated and repaired.

Personally I prefer no worst than 1 in 1,000 or even better 1 in 10,000.

View solution in original post

nihammimm
Beginner

Thanx all for information

This is serial interface only.