You can trunk the switchport and purchase a NIC that is 802.1q aware.
If this switchport connects to another switch, then just configure both switchports as trunk.
A trunk allows you to carry multiple Vlans.
what is it that you wish to do?
a trunk port w/ multiple vlans may help.
older ios versions allowed multi-vlan ports.
this was phased out as the trunking standard
(arthur sherman AKA avraham shir-el)
what i wish to do is having one machine to be able to work on 2 vlans using the same port without the need to change the access list on the main switch 4506.
This computer is connected to a 3750 switch on a port that is configure to vlax, now i want this port to be configured for vlanx AND vlany.
hi Tarek ,
you can have only one pc attached to one vlan (means a single port can be member of single vlan alone). my undertsanding is you want same pc connecting in single port to
participate in 2 vlans at same time (not possible i guess)
1) Purchase a NIC with 802.1q support
2) Configure the switchport as trunk
This procedure is done before on server farm environments where you have a VMWare machine hosting several VMWare hosts running on different subnet. The NIC allows you to allocate the host on the specified subnet.
The NIC driver should allow you to configure dot1q trunking. The steps are different depending on the NIC driver, read its docs.