Issue with last port on a gigabit blade

[webnetwiz]

I've got a Cat4006 w/ SupIII, and this switch has a gigabit blade, in which I use fiber GBICs (SC conn, MM). All of the ports on this blade are used as trunks to connect to 2950 switches on other floors. In order to do that, I had to crossover the fiber patch cords (which I did on the Cat4006 side, plugging B-A to the port on the switch and and the rest of the trunk is A-B all the way to the 2950). For some weird reason, the last port on the blade, #6 would not work being crossed-over. I had a spare 2950, that I connected to the blade using a straight A-B to A-B patch cord, and only then the connection came up. I've swapped GBICs, no difference. Is there something special about that port, or am I going crazy?

 

[BuckWeet]

Uhh, sounds like the GBIC is wierd, or the fiber patch cable or fiber somewhere is mislabed, or terminated with the wrong color coding for the connector...


try that Gbic in another slot, see what it does, try a known good gbic in that last slot.. Try different patch cables, try different 2950 Gbics, etc... Rule out anything that you can..


BuckWeet

 

[webnetwiz]

Well, the problem seemed to be a mislabeled fiber patch cord. Another cable worked just fine. Weird, but hey, as long as it works.