To tag or not to tag

[glio]

Environment: 3Com 4924 as core and 4 x 3Com 4400. Each 4400 locates in one computer lab and all workstations are to be confined within a single VLAN, hence 4 VLANs in total.

I'm building a DHCP server to assign IPs in different subnet according to the VLAN the workstation belongs to, eg. VLAN ID 1 => 192.168.1.X
VLAN ID 2 => 192.168.2.X

How should I configure the VLAN setting of the NIC on my DHCP server (Netware 6.5)? Should I tag all four VLAN IDs (1-4) to the NIC of the server... if so, how should I configure the switches? Which ports should be un/tagged?

 

[glio]

I'm very confused by the terms "tagged" and "untagged". When should I tag a VLAN ID to a server's NIC? If an NIC is tagged, should I also tag the switch port that connects to the server?

Jimmy

 

[ADB100]

There should be no need for tagging on your servers NIC. You will however need to add 'IP Helpers' or 'DHCP Forwarders' on your client VLAN's to forward the DHCP requests to your DHCP server.
You would only really need to Tag on your servers NIC if it physically needed to exist in multiple VLAN's, which in your case it doesn't.

HTH

Andy