design a LAN

A switch is sometimes called a bridge, but you have to make sure your bridge/switch supports VLANs.

Yes, the will separate the students network from the starff as long as all the switches support VLANs.

use 3com or cisco switches most support VLAN

Thank you solo and thank u sose, abt separating the 2 networks?Can a bridge do the work. And if we consider a VLAN can we separate all the teachers network from the students network?

Both physical subneting using 2 switches, or VLANs subneting using a switch that supports it, both ways can do the same work. But VLANs are a little more flexible and configurable. But both will do.

i mean in all the rooms including the theory classes labs and staffrooms?

If you want students to use physical ports on staffrooms then the answer is NO. Unless you reserve certain ports only for students (and assign/connect them to students subnet/VLAN). Or you do MAC address based VLANs, which is not very simple to administer.

If you want them to access their own subnet/VLAN via a wireless AP while sitting in the staff rooms, thats possible. But you have to make sure the AP coverage can reach the staff rooms.

Just quick thoughts here, there might be other things that I've overlooked.

solo

how do we implement vlan physically using two switches.

solo

how do we implement vlan physically using two switches.

Maybe I should have NOT said the word "Physical".

Do you mean VLANs using two switches? or ordinary subneting using two switches without VLAN?

I mean using 2 switches that dont support vlan to create two subnet

but the two I think is thesame because a VLAN is a subnet - a broadcast domain