Users Guide

842 VLANs
switchport voice vlan
{
vlanid | dot1p priority
| none | untagged |
data
priority {trust |
untrust} | override-
authentication| dscp
value }
Enable the Voice VLAN capability on the interface.
•
vlanid — The Voice VLAN ID. This VLAN ID is sent to IP
phones via LLDP. If the phone authenticates using
RADIUS, this VLAN ID must match the RADIUS Voice
VLAN. The phone must be configured to accept the
Voice VLAN configuration from LLDP.
•
priority —The IEEE 802.1p priority sent to the IP phone
on the port via LLDP. The switch must be configured
locally to give packets using the transmitted priority the
appropriate QoS. The phone must be configured to
accept the 802.1p priority configuration from LLDP.
• none—Allow the phone to use it's own configuration.
The administrator must configure the switch
appropriately to give voice packets the required QoS.
• untagged—Configure the port to accept untagged voice
packets.
• trust— Trust the dot1p priority or DSCP values
contained in Voice VLAN or priority tagged packets.
• untrust— Do not trust the dot1p priority or DSCP values
contained in packets arriving on the Voice VLAN.
• override-authentication — Use this parameter to allow
voice traffic on an 802.1x unauthorized port. Use the no
form of the command to prevent voice traffic on an
802.1x unauthorized port.
• dscp
value — The DSCP value (Range: 0–64). This value
is transmitted to the IP phone via LLDP. The switch must
be configured locally to give packets using the
transmitted DSCP value the appropriate QoS.
CTRL + Z Exit to Privileged Exec mode.
show voice vlan
[interface {
interface
|all}]
Display Voice VLAN configuration information for the
switch, for the specified interface, or for all interfaces.
Command Purpose