Digisol DG-GS4826S Management Manual page 961

Table 115: Voice VLAN Commands (Continued)
Command
switchport voice vlan rule
switchport voice vlan
security
show voice vlan
voice vlan
This command enables VoIP traffic detection and defines the Voice VLAN
ID. Use the no form to disable the Voice VLAN.
S
YNTAX
voice vlan voice-vlan-id
no voice vlan
voice-vlan-id - Specifies the voice VLAN ID. (Range: 1-4093)
D S
EFAULT
Disabled
C
OMMAND
Global Configuration
C
OMMAND
When IP telephony is deployed in an enterprise network, it is
u
recommended to isolate the Voice over IP (VoIP) network traffic from
other data traffic. Traffic isolation helps prevent excessive packet
delays, packet loss, and jitter, which results in higher voice quality. This
is best achieved by assigning all VoIP traffic to a single VLAN.
VoIP traffic can be detected on switch ports by using the source MAC
u
address of packets, or by using LLDP (IEEE 802.1AB) to discover
connected VoIP devices. When VoIP traffic is detected on a configured
port, the switch automatically assigns the port as a tagged member of
the Voice VLAN.
Only one Voice VLAN is supported and it must already be created on the
u
switch before it can be specified as the Voice VLAN.
The Voice VLAN ID cannot be modified when the global auto-detection
u
status is enabled (see the
E
XAMPLE
The following example enables VoIP traffic detection and specifies the Voice
VLAN ID as 1234.
Console(config)#voice vlan 1234
Console(config)#
Function
Sets the automatic VoIP traffic detection method for
ports
Enables Voice VLAN security on ports
Displays Voice VLAN settings
ETTING
M
ODE
U
SAGE
switchport voice vlan
– 961 –
C 39 | VLAN Commands
HAPTER
Configuring Voice VLANs
Mode
IC
IC
PE
command.