Single port on multiple vlans?

[sasj0e]

Hi,
Is it not possible to put a port on multiple vlans?What I am trying to ask is,whether a port can carry packets from various vlans or not?
Trunking a port is an option, I know.But in a Cisco 4006 switch with sup-II and catos7.3,is it possible to assign a port part of several vlan?
ex:I have a port 3/3
When I say "set vlan 1 3/3",then 3/3 is assigned to default vlan 1 and can send/receive packets with in that vlan.
Now if I say "trunk port 3/3 on dot1q", it should be able to be able to send/accept packets from all the vlans.right?
and what is auxilary vlan mean??and why do we need that?---doubt
Pls clarify if anybody can on this..
regards,
Sas

 

[gaveeve]

The trunk port will carry many Vlans but it isn't actually part of those vlans. In order to communicate across vlans(from one device in vlan 2 to another device in vlan 3) you will need some kind of routing.