Cisco 2950G 24 Software Configuration Guide - Page 388
Configuring Ports to Carry Voice Traffic in 802.1Q Frames, not enter leading zeros.
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Configuring Voice VLAN Chapter 16 Configuring Voice VLAN Configuring Ports to Carry Voice Traffic in 802.1Q Frames Beginning in privileged EXEC mode, follow these steps to configure a port to carry voice traffic in 802.1Q frames for a specific VLAN: Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Command Purpose configure terminal Enter global configuration mode. interface interface-id Specify the interface connected to the IP phone, and enter interface configuration mode. switchport voice vlan vlan-id 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 802.1Q priority of 5. Valid VLAN IDs are from 1 to 4094 when the enhanced software image (EI) is installed and 1 to 1001 when the standard software image is installed. Do not enter leading zeros. end Return to privileged EXEC mode. show interfaces interface-id switchport Verify your voice VLAN entries. 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 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. Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Command Purpose configure terminal Enter global configuration mode. interface interface-id Specify the interface connected to the IP phone, and enter interface configuration mode. switchport voice vlan dot1p Instruct the switch port to use 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 802.1P priority of 5. end Return to privileged EXEC mode. show interfaces interface-id switchport Verify your voice VLAN entries. 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. 16-4 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01
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