Displaying And Maintaining Voice Vlan Configuration; Voice Vlan Configuration Example - 3Com 7757 Configuration Manual

110 C 12: V
HAPTER OICE
Displaying and
Maintaining Voice
VLAN Configuration
Voice VLAN
Configuration
Example
Voice VLAN
Configuration Example
(Automatic Mode)
VLAN C
ONFIGURATION
Voice VLAN function can be effective only for the static VLAN. Once a dynamic
■
VLAN is enabled with voice VLAN function, it automatically changes to static
VLAN.
When a voice VLAN operates in the security mode, the devices in it only permit
■
packets whose source addresses are the voice OUI addresses that can be
identified. Packets whose source addresses cannot be identified, including
certain authentication packets (such as 802.1x authentication packets), will be
dropped. So, do not transmit both voice data and service data in a voice VLAN.
If you have to do so, make sure the voice VLAN do not operate in the security
mode.
After the voice VLAN function is enabled on a port, you cannot enable the
■
QinQ feature on the port, and vice versa, that is, after the QinQ feature is
enabled on a port, you cannot enable the voice VLAN function on the port.
A voice VLAN-enabled port will automatically learn OUI addresses, without
■
being limited by the function of prohibiting MAC address learning and the
specified maximum number of MAC addresses to be learnt.
The voice VLAN legacy feature realizes the communication between 3Com's
■
devices and other vendor's voice devices by automatically adding the voice
VLAN tag to the voice data coming from other vendors' voice devices. The
voice vlan legacy command can be executed before voice VLAN is enabled
globally and on a port, but it takes effect only after voice VLAN is enabled
globally and on the port.
After the above configurations, you can execute the display command in any
view to view the running status and verify the configuration effect.
Table 61 Display configurations of a Voice VLAN
Operation
Display the voice VLAN
configuration status
Display the currently valid OUI
addresses
Display the ports operating in
the current voice VLAN
Network requirements
Configure Ethernet2/0/1 port as a Trunk port, with VLAN 6 as the default port.
■
Bind VLAN 2 to Ethernet 2/0/1 as a voice VLAN.
Ethernet2/0/1 port can be added to/removed from the voice VLAN
■
automatically according to the type of the data stream that reaches the port.
Configuration procedure
# Create VLAN 2.
Command
display voice vlan status
display voice vlan oui
display vlan vlan-id
Description
You can execute the display
command in any view.