Re: Cascading Network Switches

["Paul Gordon" <paul_gordon@xxxxxxx>]

Don,

Having the uplink port means you have total flexibility & freedom about
what
cables & ports you use.

Basically, at ONE point, (and one point only) there must be a cross-over
introduced between the two hub/switch ports that you use to cascade the
devices together.

This crossover can be introduced by any ONE of the following means:

a) use an uplink port on ONE of the devices (and one device only!)
b) use a crossover cable between two normal ports.

so, if you use the uplink port on your switch, you must use a normal
straight through CAT5 cable, AND a normal (ie non-uplink) port on the
cascaded device.

Note: If the uplink port is switchable, then it is to be considered a
normal
port if it is switched to the normal (ie non uplink) position, so you can
use an "uplink" port on both devices, so long as only one of the
ports is
actually switched to uplink mode.

Alternatively, you can use a crossover CAT5 cable, and then you'd have to
use normal ports at each end...

Clear?

Paul G.



>From: "Don McAllister" <donmc@xxxxxxx>
>Reply-To: ukha_d@xxxxxxx
>To: <ukha_d@xxxxxxx>
>Subject: [ukha_d] Cascading Network Switches
>Date: Wed, 20 Mar 2002 11:17:37 -0000
>
>Sorry for what may appear a few dumb questiond but....
>
>I've got a 8 port 100MB switch on which one of the ports is switchable
>as an uplink port. Rather than replace the switch with a bigger one, a
>quick (and cheap) method to extend CAT5 to my upstairs bedrooms may be
>to use the uplink port to another small 100MB switch in one of the
>bedrooms and fan out from there.
>
>Does the uplink cable need to have a different spec to a normal cat5
>cable (eg crossover?)
>
>Does the second switch need an uplink port or would the uplink cable
>from the first just plug into one of the standard UTP sockets on the
>second switch?
>
>Not looking to flood wire Cat5 just yet, just want a cheap and cheerful
>solution to getting internet connectivity to the kids bedrooms :-)
>
>TIA
>
>Don
>
>




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