Where all unassigned ports should be placed

Not allowed on the trunk

Any traffic that enters a blackhole vlan goes nowhere

Not widely used

Requires Vlan membership policy server

Assigned to a device based on (source) MAC address

Assigns IP addresses

used for telnet/SSH or web access for management purposes

backwards compatible with older systems

relevant to trunk ports

trunk ports carry traffic from multiple vlans

identified by a "tag" in the frame

port manually assigned to vlan

if a port is put on a vlan and the vlan does not exist, then the vlan is created

Port Base (cisco static vlan)

MAC based (cisco dynamic)

Protocol Based (most switches don't use this type)

* Easy to configure

* highest degree of security & control

* all port assignment changes must be set manually

* Time to manually configure ports becomes a problem as the network grows

* a device can only be a membe of the VLAN group in network

* not dependant on the port connection

* user can remain a member of the VLAN even if office changes location

* possible to belong tomore than one VLAN

* required when a link needs to carry traffic for more than one vlan

* this is knowns a a trunk link or tag port or vlan trunking

* it defines port-based tagging rules

* It provides standardized approach to extending VLANs

*it is independant of VLAN type

*It supports fram prioritization

*It extends VLAN to end stations

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