Trunking between 3550-12T and 2950T-24

[furrow.s]

Hello,

I am attempting to set up a trunk link between a 3550-12T and a 2950T-24 and seem to be having some troubles. I am trying to connect the trunk link between one of the 10/100/1000BT ports on the 2950 and the 10/100/1000BT port on the 3550. However when I connect the two (whether using straight through or crossover cables) I cannot get a physical link. I have tried everything from changing the trunk modes, speed/duplex and have tried different ports. The strange thing is that the link comes up just fine if I connect the cable to one of the 10/100 ports on the 2950 rather than the 10/100/1000. Could this possibly be a software problem or a hardware incompatibility? I am running 12.1(6)EA2c on the 2950 and 12.1(8)EA1c on the 3550. Any help is greatly appreciated. Thanks!

[Prashanth Krishnappa]

Have you tried connecting the two switches without any trunk encapsulation (regular access vlan port) on the 10/100/1000 ports? Also try a gig cross-over cable

1........3

2........6

3........1

4........7

5........8

6........2

7........4

8........5

[furrow.s]

Thank you so much prkrishn! I didn't realize that there was such thing as a gig crossover cable. Definitely a tip to keep handy.