We have point to point T1 line with two 1841 routers on both ends. Lately we see a lot of errors on the serial interfaces.
Here is an example:
57222 input errors, 57222 CRC, 31319 frame, 17809 overrun, 0 ignored, 34138 abort.
They are input errors on both ends although I don't know if this means anything.
The problem is so bad that the line comes to a halt. The errors increase by seconds.
I thought is a Qwest problem but they test it on both ends and told the line seems to be clean. I replaced cables and routers and nothing changed. The tech also told me that it could be an "option mismatch". I don't know what that really means.
This line use to work fine for some time so I don't think configuration on routers would be the issue.
If you need more info please let me know.
Any help would be very appreciated.