[windows2000] Re: A networking question
- From: "Chris Berry" <compjma@xxxxxxxxxxx>
- To: windows2000@xxxxxxxxxxxxx
- Date: Tue, 18 Nov 2003 15:56:14 -0800
From: "Costanzo, Ray" <rcostanzo@xxxxxxxxxxx>
I have a network jack in my wall that goes to a 16 port switch. I'd
like to hook up a little 5 port switch that I have, but it doesn't have
an uplink port. True a false? I can use a crossover cable and just
plug it into one of the ports, and that will be as good as having an
uplink port.
True. If the 16 port switch has an uplink port you could also use a
straight cable from there to port 1 on the 5 port switch.
I'd just go try it and see, but a) I'm still at work, and b) I own zero
crossover cables.
EASY RULE: Any time you are connecting two network devices there must be at
least one crossover (and an odd number if there are more than one).
A crossover is any time you switch from a T568B pinout to a T568A pinout.
Standard network cable terminations (in most installations) and switch ports
are T568B
Most NICs are T568A
So to connect Port 1 (T568B) on a switch to Port 1 (T568B) on another switch
you need a cable that is a crossover T568B on one end and T568A on the
other.
To connect the Uplink Port (T568A) on a switch to Port 1 (T568B) on another
swith you need a straight cable T568B on both ends.
To connect a NIC (T568A) to Port 1 (T568B) on a switch you need a straight
cable T568B on both ends.
To connect a NIC (T568A) to the Uplink Port (T568A) on a switch you need a
crossover cable T568B on one end and T568A on the other
To connect a NIC (T568A) directly to another NIC (T568A) you need a
crossover cable T568B on one end and T568A on the other (Now that's a small
LAN)
Chris Berry
compjma@xxxxxxxxxxx
Systems Administrator
JM Associates
"Ok, so the servers are down, the lights are out, and all I have to work
with is a roll of duct tape, a ball point pen, a lighter, and a twenty year
old copy of emacs. Where's the problem?"
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