bad cisco serial cable?

fonque

I recently reconfigured my lab to build the TSHOOT topology.
everything was working fine until I started configuring my frame-relay cloud.
I am using a 2520 as the frame-relay switch with 4 2600s connected to it.

For some reason, my 2520 is not detecting the DCE end of the serial cables on 3 of the 4 interfaces. Only interface serial 3 is working correctly.

Could I have 3 bad serial cables or is there something wrong with the 2520?

also, the 2600s on the other end of the cable can detect the DTE end just fine.

networker050184

Have you tried using the working cable on another port? That can narrow the issue down pretty quick for you.

fonque

Nevermind, I plugged the DB60 sides of the cables in upside down. didnt know they would fit that way. Such stupid mistake.

fonque

Thanks for the reply, I did try the working cable on all the other ports and it detected the DCE end, thats what made me think I had a cable problem, but it was more like user error *hand to forhead*

chmorin

fonque wrote: »

Nevermind, I plugged the DB60 sides of the cables in upside down. didnt know they would fit that way. Such stupid mistake.

Things like that are things you only learn by doing. And you usually don't do it twice. Best of luck!