Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

CWDM - frame and crc errors

I am trying to bring up a cwdm network. I have a 4 wavelengths all are within the cwdm power budget of -29 to -7 dBm hanging off of 4 separate muxes (cwdm-mux8a). I get link no problem. However whenever I try to put any traffic over any of the wavelengths I get frame and crc errors on the receiving cisco interface. Anybody run into this or any thoughts as to what may be the cause??

Thanks.

-rich

1 REPLY
New Member

Re: CWDM - frame and crc errors

Rich,

Just a thought, but I would first try replacing your "sending" CWDM GBIC and see if that clears your CRC's on your recieving interface. I have also seen CRC's on CWDM with bad or dirty fiber uplinks, bad splices along the fiber backbone, or possibly dirty bulk-heads along the fiber path....

Most of the time, in my experience, it seems to be a physical layer issue...

Ethan

386
Views
0
Helpful
1
Replies