At the moment I have a number of unmanaged switches that are going to be replaced with a HP ProCurve 4204VL switch
Please see the attached file for a screen dump of how the interfaces on our Firewall are configured.
Port 1 is the LAN - 172.16.0.0/16
Port 2 is the DMZ - 192.168.0.0/24
WAN1 is the WAN - 220.127.116.11/29
The current LAN switches are uplinked between each other.
The DMZ switch is one separate switch.
The cable out of Port 2 on the Firewall plugs into port 1 of this small switch then all the servers in the DMZ plug into separate ports on that same switch.
What I would like to do is segment off 4 ports on the ProCurve switch namely B17 to B20 and use B17 to connect to Port 2 on the firewall - B18, B19, B20 to connect servers.
Essentially I want to have a 4 port virtual switch within this 72 port physical switch.
All servers patched into the ports designated for the DMZ must be able to talk between each other and communicate back to the LAN via port B17.
As the configuring of the Firewall was a long and painful task, I don't not want to reconfigure that in any way.
I have attached the running config of the switch in the same attached file.