11-26-2002 05:21 AM - edited 03-02-2019 03:10 AM
We just purchased the 3550-emi 12g (Cisco Catalyst 3550-12G Switch 10 GBIC-based Gigabit Ethernet ports and 2 10/100/1000BaseT ports). We
want to connect 2 of these devices via the 1000Base T ports. I checked
the cable requirements and I just want to be sure that we can do that
using a standard cat5 crossover cable. If not, could you supply a url
for the cable requirements and wiring diagram.
Thanks.
11-26-2002 06:09 AM
You will have to cross the other pairs too. Normal croos will not work.
1-3
2-6
3-1
4-7
5-8
6-2
7-4
8-5
Check the following link...
http://www.wiring.com/industry_diy/pin-outs.htm
regards
11-26-2002 10:39 AM
Thanks for your help.
11-27-2002 04:02 AM
This is not correct. You can use x-over cables where only 1,2,3,6 us used. We're using it and it is according to doc. on cco. If there is other recommondations, please inform me.
11-27-2002 07:28 AM
Check the following link. Cisco too recommends four twisted-pair, crossover Category 5 cabling for 1000BaseT ports. Are you sure you are getting a speed of 1000Mbps?
regards
11-29-2002 04:07 AM
Yes, the links is 1000Mbps/full. See:
but I agree that four twisted-pair should be used. Could be working in our case since the switches is locaded next to each other.
11-29-2002 08:55 PM
Thanks for the information. I thought the normal cross over doesn't work. Sorry for the confusion.
regards
12-03-2002 12:49 AM
I'm also very sorry for the confusion. When you posted your info. about using 4 pair I had to check my cables and I'm using all 4 pairs. I tested with using only 2 pair and IT IS NOT WORKING either for 10, 100 or 1000. You are correct.
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