Optimizing network backbone

[dgcarter]

At the school I work at we have a network of about 400 PC's.
There are 7 switch racks in various parts of the premesis all connected to the data center via optical fibre, but two of the classrooms which share the same switch rack and are close to the data center are connected via a single UTP cable, which is probably the cause of the slow speeds the users experiance in those classrooms.

So, if I were to run, say, another two UTP cables from the data center to the switch rack, would that increace the uplink speed?

 

[ghalied]

Not really.

Have you tried a different cable ?
Have you tried a different switch (should leave to last if all else fails ) ?
Is the cable connected to the gigabit interface of the switch ?
Is the interface configured for Fdx or Half ?
Is their a Root Bridge switch in place ?
Is STP enabled ? if so what path is the traffic taking to get to the root bridge ?
( just because the switch is the closest, it could take the longest path to to root switch )
What is the broadcast traffic like ?
When is the traffic at a peak ?

I could go on and on as there is load of things to check, start with the cabling, check switch configs, check timeframes of high throughput .........etc

You need to supply more details essentially.