Motorola 45101, T2-2500 manual 802.1Q VLANs, Vlan Specification, Vlan terminology, Tagged Untagged

VLAN modes:

Max number of VLANs: Valid VID range: Default PVID:

Default Egress:

Default Ingress:

IEEE 802.1Q standard compliant VLANs or Port-based VLANs on mT2 Switch

IEEE 802.1Q standard compliant VLANs on m2 WallPlates

128

1 – 4094

1

transmit untagged

Accept all packets

PVID

Tagged

Untagged

In the 802.1Q standard, each port is assigned a PVID. This is the default VLAN ID assigned to untagged packets received (ingress) on that port. The PVID is sometimes called the port Native VLAN. By default, all ports are assigned VLAN 1.

T2 will optionally tag packets when transmitting (egress) on the port. Set the port as a tagged member of the VLAN by using the vlan membership egress command.

On the T2 Switch, the tag mode of a packet is determined PER VLAN, not per port. By comparison, the Cisco IOS only has a per port setting for tagging. This allows the T2 to support complex VLAN configurations not possible on other switches.

On the m2 WallPlate, the tag mode of a packet is determined PER PORT, similar to the Cisco IOS “trunk” mode.

T2 will optionally transmit (egress) packets without an 802.1Q VLAN tag. Use Untagged packets on any port that is connected to a non-VLAN aware device. For example; if a PC is connected to the WallPlate ports, packets will be untagged. This is similar to the Cisco IOS “access” mode of a switchport.