From: Scott Morris (swm@emanon.com)
Date: Mon Apr 24 2006 - 11:16:07 GMT-3
The spec for Cat6 has to do with the type of cable, type of shielding and
number of twists, etc. It doesn't specify anything about number of pairs
used.
1000-Base-TX requires all four pairs be used in establishing a connection,
therefore it SHOULD cross all of them. But you are dealing with two
different specifications, and one does not necessarily equal the other! So
ask the cabling vendor what they are doing, and make sure it will work for
you.
Otherwise, the gig-TX ports are auto-MDIX so a straight-through cable will
work and require much less thought. :)
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Tom
Young
Sent: Monday, April 24, 2006 8:32 AM
To: ccielab@groupstudy.com
Subject: about the cat6 cable
For connect two WS-6748-GE-TX modules, I should use a four Twisted-Pair
Crossover Cable ,because it is a 1000BaseT connection. I use the cat6
crossover cable.
My question is : does all of the cat6 crosscable are four Twisted-Pair
Crossover Cable by default?
thanks alot
attach: pin layout of my want.
http://www.cabling-design.com/references/pinouts/1000base_t_crossover.shtml
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