VLANs

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Hey Guys,

I got a question regarding VLANs, when moving a node from one VLAN to another VLAN DHCP hang on to that lease? only known work around is "ipconfig /release" before relocating the node.

Is there something that can be configured so I wont have to do this everytime?

shorten your lease time?

Dan,
That is true, the machine will retain its IP for the duration of the lease when the VLAN is changed. The trick I use to get around this is I shut the port down when I change the VLAN and then turn it back on again. For example:
Switch(config)# interface fa0/24 Switch(config-if)# shutdown Switch(config-if)# switchport access vlan 400 Switch(config-if)# no shutdown Switch(config-if)# end
The PC will see the network card reset and perform a new DHCP discovery. That saves you from having to go to the individual PCs.
Hope that helps,
Don Pezet
Host, ITProTV