How To Configure Voice Vlan - Cisco Catalyst 2960 series Configuration Manual
Consolidated platform configuration guide, ios release 15.2(4)e
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Also See for Catalyst 2960 series:
- Software configuration manual (980 pages) ,
- Command reference manual (800 pages) ,
- Configuration manual (120 pages)
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How to Configure Voice VLAN
Configuring Cisco IP Phone Voice Traffic
You can configure a port connected to the Cisco IP Phone to send CDP packets to the phone to configure the
way in which the phone sends voice traffic. The phone can carry voice traffic in IEEE 802.1Q frames for a
specified voice VLAN with a Layer 2 CoS value. It can use IEEE 802.1p priority tagging to give voice traffic
a higher priority and forward all voice traffic through the native (access) VLAN. The Cisco IP Phone can also
send untagged voice traffic or use its own configuration to send voice traffic in the access VLAN. In all
configurations, the voice traffic carries a Layer 3 IP precedence value (the default is 5).
SUMMARY STEPS
1. enable
2. configure terminal
3. interface interface-id
4. mls qos trust cos
5. switchport voice {vlan{vlan-id | dot1p | none | untagged}}
6. end
7. Use one of the following:
8. copy running-config startup-config
DETAILED STEPS
Command or Action
Step 1
enable
Example:
Switch> enable
Step 2
configure terminal
Example:
Switch# configure terminal
Step 3
interface interface-id
Example:
Switch(config)# interface
• show interfaces interface-id switchport
• show running-config interface interface-id
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
Purpose
Enables privileged EXEC mode. Enter your password if prompted.
Enters the global configuration mode.
Specifies the interface connected to the phone, and enters interface
configuration mode.
How to Configure Voice VLAN
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Troubleshooting
