Displaying And Maintaining Voice Vlan; Voice Vlan Configuration Examples; Automatic Voice Vlan Mode Configuration Example - 3Com 4500G Family Configuration Manual

To do...
Assign the
port in manual
voice VLAN
assignment
mode to the
voice VLAN
Configure the
voice VLAN
as the default
VLAN of the
port
Enable voice VLAN on the port
An 4500G switch supports up to eight voice VLANs globally.
You can configure different voice VLANs on different ports at the same time. However, one port
can be configured with only one voice VLAN, and this voice VLAN must be a static VLAN that
already exists on the device.
Voice VLAN is mutually exclusive with Link Aggregation Control Protocol (LACP) on a port.
To make voice VLAN take effect on a port which is enabled with voice VLAN and operates in
manual voice VLAN assignment mode, you need to assign the port to the voice VLAN manually.

Displaying and Maintaining Voice VLAN

To do...
Display the voice VLAN state
Display the OUI addresses
currently supported by system

Voice VLAN Configuration Examples

Automatic Voice VLAN Mode Configuration Example

Network requirements
As shown in Figure
The MAC address of IP phone A is 0011-1100-0001. The phone connects to a downstream device
named PC A whose MAC address is 0022-1100-0002 and to GigabitEthernet 1/0/1 on an upstream
device named Device A.
The MAC address of IP phone B is 0011-2200-0001. The phone connects to a downstream device
named PC B whose MAC address is 0022-2200-0002 and to GigabitEthernet 1/0/2 on Device A.
Use the command...
Refer to
Access port
Port to a
Refer to
Trunk port
to a VLAN.
Refer to
Hybrid port
Port to a
Refer to section
Trunk port
Trunk Port to a
Refer to
Hybrid port
Port to a
voice vlan enable
Use the command...
display voice vlan state
display voice vlan oui
3-3,
Assigning an Access
VLAN.
Assigning a Trunk Port
Assigning a Hybrid
VLAN.
Assigning a
VLAN.
Assigning a Hybrid
VLAN.
3-7
Remarks
Use one of the three
approaches.
After you assign an access port
to the voice VLAN, the voice
VLAN becomes the default
VLAN of the port automatically.
Optional
This operation is required for
untagged inbound voice traffic
and prohibited for tagged
inbound voice traffic.
Required
Remarks
Available in any view
Available in any view