3Com 2928 - Baseline Plus Switch PWR, User Manual

Page: 185 / 505

1-4
Voice VLAN working mode Packet type Packet processing mode
Untagged packets
Packets carrying the voice
VLAN tag
The port does not check the
source MAC addresses of
inbound packets. All types of
packets can be transmitted in
the voice VLAN.
Normal mode
Packets carrying other tags
Forwarded or dropped
depending on whether the port
allows packets of these VLANs
to pass through
Configuring the Voice VLAN
Configuration Task List
Before configuring the voice VLAN, you must create the corresponding VLAN and configure the link
type of each port to be assigned to the VLAN. As VLAN 1 is the system-default VLAN, you do not need
to create it; however, you cannot configure it as the voice VLAN. For information about port link types,
refer to
Port Management Configuration
.
Configuring voice VLAN on a port in automatic voice VLAN assignment mode
Perform the tasks described in Table 1-4 to configure the voice VLAN function on a port working in
automatic voice VLAN assignment mode.
Table 1-4
Voice VLAN configuration task list for a port in automatic voice VLAN assignment mode
Task Remarks
Configuring Voice VLAN
Globally
Optional
Configure the voice VLAN to operate in security mode and configure
the aging timer
Configuring Voice VLAN
on a Port
Required
Configure the voice VLAN assignment mode of a port as automatic and
enable the voice VLAN function on the port.
By default, the voice VLAN assignment mode of a port is automatic,
and the voice VLAN function is disabled on a port.
Adding OUI Addresses to
the OUI List
Optional
The system supports up to 16 OUI addresses.
By default, the system is configured with seven OUI addresses, as
shown in Table 1-1 .
Configuring voice VLAN on a port working in manual voice VLAN assignment mode
Perform the tasks described in Table 1-5 to configure the voice VLAN function on a port working in
manual voice VLAN assignment mode.