Chapter 57: Voice VLAN Commands
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SWITCHPORT VOICE VLAN
Syntax
switchport voice vlan
<vid>|priority <value>
Parameters
vid
Specifies the ID number (VID) of the VLAN that functions as the
voice VLAN for ports. You can specify only one VID. The range is 1
to 4094.
priority
Configures the Layer 2 user priority advertised when the
transmission of LLDP-MED Network Policy TLVs for voice devices
is enabled. This is the priority in the User Priority field of the IEEE
802.1Q VLAN tag, also known as the Class of Service (CoS) or
802.1p priority. When LLDP-MED capable IP phones receive this
network policy information, they transmit voice data with the
specified priority.
Mode
Port Interface mode
Description
Use this command to configure the Voice VLAN tagging advertised when
the transmission of LLDP-MED Network Policy TLVs for voice endpoint
devices is enabled. When LLDP-MED capable IP phones receive this
network policy information, they transmit voice data with the specified
tagging. This command also sets the ports to be spanning-tree edge ports,
that is, it enables spanning-tree portfast on the ports.
Use the NO form of this command to remove LLDP-MED network policy
configuration for voice devices connected to these ports. This does not
change the spanning-tree edge port status.
LLDP-MED advertisements, including Network Policy TLVs, are
transmitted via a port if:
LLDP is enabled (LLDP RUN command).
The port is configured to transmit LLDP advertisements—enabled
by default (LLDP TRANSMIT RECEIVE command).
There is an LLDP-MED device connected to the port.
To set the priority value to be advertised for tagged frames, use the
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