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one-way 1000base-T link

cat 4506 1000base-T <--> glc-t SFP cat 3560-48t,

two switch connect by straight-through cat 5e, but form one-way link.

at 4506,"show cdp nei" can find 3560, but 3560 can't find 4506, and aslo VTP corrupted.

I changed straight-through cat 5e to 1000T cross-over cat 5e, but it doesnot work , result are same with straight-through cable.

any suggestion?

thanks.

1 REPLY
Purple

Re: one-way 1000base-T link

Make sure your cables are good , running gig takes 4 good pairs as gigabit uses all 8 wires to transmit and recieve . If you have even 1 bad wire this would keep it from coming up , also make sure both sides are auto if that is an option .

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