Isolation of port groups

[rlchase]

I have a Cisco 3548Xl switch and I would like to isolate 4 ports from the other 44 ports so that they cannot see the other two and vice versa. I want to be able to use all of the ports as though they were two seperate switches. I am new to networking and thout I could just make one group port 1 and the other port group 2. When I do this and connect a computer in one port group and one in the other I am still able to ping the other. What am I doing wrong, or is this possible?
Chase

 

[Degg]

all you need to do is set up the 4 ports on another VLAN. by default, all ports are on VLAN 1. when you setup VLAN 2, those computers wont be able to see computers on VLAN 1 unless you have a router. I'm looking for details on how to setup vlan's on the 3548 (its been awhile...) Degg
Network Administrator

 

[Degg]

ok, here is a link that gives you more than you need to know about VLAN's.

http://www.cisco.com/univercd/cc/td/doc/product/lan/c2900xl/29_35wc5/scg/swvlan.htm

basically, it goes like this from command line:

switch>enable
switch#configure terminal
switch(config)#interface x (the port you want on a new vlan)
switch(config-if)#switchport access vlan 2
switch(config-if)#interface x (next port)
switch(config-if)#switchport access vlan 2

do this until all ports you want are done, then type 'exit' until you are at the 'switch#' prompt, and type 'wr' and hit enter to save config.
This should take care of things. Degg
Network Administrator