Cisco Catalyst 2950 Software Configuration Manual page 382
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- Configuration manual (710 pages) ,
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Configuring Voice VLAN
•
Configuring Ports to Carry Voice Traffic in IEEE 802.1Q Frames
Beginning in privileged EXEC mode, follow these steps to configure a port to carry voice traffic in IEEE
802.1Q frames for a specific VLAN:
Command
Step 1
configure terminal
Step 2
interface interface-id
Step 3
switchport voice vlan vlan-id
Step 4
end
Step 5
show interfaces interface-id
switchport
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.
To remove voice VLAN, use the no switchport voice vlan interface configuration command or the
switchport voice vlan none interface configuration command.
Configuring Ports to Carry Voice Traffic in IEEE 802.1p Priority-Tagged Frames
Beginning in privileged EXEC mode, follow these steps to configure a port to instruct the IP phone to
give voice traffic a higher priority and to forward all traffic through the native VLAN.
Command
Step 1
configure terminal
Step 2
interface interface-id
Step 3
switchport voice vlan dot1p
Step 4
end
Step 5
show interfaces interface-id
switchport
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.
To return the port to its default setting, use the no switchport voice vlan interface configuration
command.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
18-4
Configuring the IP Phone to Trust the CoS Priority of Incoming Data Frames, page 18-6
Purpose
Enter global configuration mode.
Specify the interface connected to the IP phone, and enter interface
configuration mode.
Instruct the Cisco IP Phone to forward all voice traffic through the specified
VLAN. By default, the Cisco IP Phone forwards the voice traffic with
an IEEE 802.1Q priority of 5.
Valid VLAN IDs are from 1 to 4094.
Return to privileged EXEC mode.
Verify your voice VLAN entries.
Purpose
Enter global configuration mode.
Specify the interface connected to the IP phone, and enter interface
configuration mode.
Instruct the switch port to use IEEE 802.1p priority tagging for voice traffic
and to use the default native VLAN (VLAN 0) to carry all traffic. By default,
the Cisco IP phone forwards the voice traffic with an IEEE 802.1p priority
of 5.
Return to privileged EXEC mode.
Verify your voice VLAN entries.
Chapter 18
Configuring Voice VLAN
78-11380-12
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