I am getting input, CRC and Frame errors on my serial interfaces. I have 3 T-1's configured with multilink and connect to MPLS.
Attached is an output of the show int.
I am working with our carrier but they say they test clean to the CSU on all three T's. Can anyone let me know any thoughts on what may be causing this? We are getting upwards of 600,000 errors an hour but it does not seem to be affecting our users either with data or our VoIP traffic, and beleive me if we were seeing slowness or issues our users would let us know. Any help would be greatly appreciated.
The reliability on ML is 137/255 which is not good
There is lot of framing errors in this interface. A framing error occurs when a packet does not end on an 8-bit byte boundary. Problems that may cause - Noisy serial line or the CSU line clock is incorrectly configured; might one of the clocks is configured for local clocking
I am a little new to the multilink stuff so let me make sure I understand. when you say to switch network-clock priority to another circuit I would change the netowrk-clock-select T1 0/2/0 to like 0/1/0? Will this bring the circuit down?
Yes. However it won't bring the circuit down, but you may see that the slips move from a circuit to another.
It is a bit strange because circuits from a same provider via same telco are supposed to have a single clock source and no slips.
[EDIT] OK I understand now that you were using primary clock from a PRI interface. Now because slips are more an issue with voice rather than on data circuits (cause problems especially with faxes) you may find that is better to leave thing as they are and live with the slips on the data circuits.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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