Quick Reference Guide

PowerConnect B-Series TI24X Configuration Guide 305
53-1002269-02
Dual-mode VLAN ports
10
Syntax: [no] pvlan preference broadcast | unknown-unicast
These commands enable forwarding of broadcast, unregistered multicast flood, and
unknown-unicast packets to ports within the private VLAN.
Dual-mode VLAN ports
Configuring a tagged port as a dual-mode port allows it to accept and transmit both tagged traffic
and untagged traffic at the same time. A dual-mode port accepts and transmits frames belonging
to VLANs configured for the port, as well as frames belonging to the default VLAN (that is, untagged
traffic).
For example, in Figure 72, port 11 is a dual-mode port belonging to VLAN 20. Traffic for VLAN 20,
as well as traffic for the default VLAN, flows from a hub to this port. The dual-mode feature allows
traffic for VLAN 20 and untagged traffic to go through the port at the same time.
FIGURE 72 Dual-mode VLAN port example
To enable the dual-mode feature on port 11 in Figure 72,enter the following commands.
PowerConnect(config)# vlan 20
PowerConnect(config-vlan-20)# tagged e 11
PowerConnect(config-vlan-20)# tagged e 9
PowerConnect(config-vlan-20)# int e 11
PowerConnect(config-if-e10000-11)# dual-mode
PowerConnect(config-if-e10000-11)# exit
Syntax: [no] dual-mode
VLAN 20
Traffic
Untagged
Traffic
Port11
Tagged, VLAN 20
dual-mode
Port9
Tagged, VLAN 20
Port10
Untagged
VLAN 20
Traffic
Untagged
Traffic
Hub
Switch