HP Cisco Catalyst Blade Switch 3020 Cisco Catalyst Blade Switch 3020 for HP Co - Page 544

switchport voice vlan Chapter 2 Cisco Catalyst Blade Switch 3020 for HP Cisco IOS Commands When you enable port security on an interface that is also configured with a voice VLAN, set the maximum allowed secure addresses on the port to two. When the port is connected to a Cisco IP phone, the IP phone requires one MAC address. The Cisco IP phone address is learned on the voice VLAN, but is not learned on the access VLAN. If you connect a single PC to the Cisco IP phone, no additional MAC addresses are required. If you connect more than one PC to the Cisco IP phone, you must configure enough secure addresses to allow one for each PC and one for the Cisco IP phone. If any type of port security is enabled on the access VLAN, dynamic port security is automatically enabled on the voice VLAN. You cannot configure static secure MAC addresses in the voice VLAN. The Port Fast feature is automatically enabled when voice VLAN is configured. When you disable voice VLAN, the Port Fast feature is not automatically disabled. Examples This example shows how to configure VLAN 2 as the voice VLAN for the port: Switch(config)# interface gigabitethernet0/22 Switch(config-if)# switchport voice vlan 2 You can verify your settings by entering the show interfaces interface-id switchport privileged EXEC command. Related Commands Command show interfaces interface-id switchport switchport priority extend Description Displays the administrative and operational status of a switching port. Decides how the device connected to the specified port handles priority traffic received on its incoming port. 2-516 Cisco Catalyst Blade Switch for HP Command Reference OL-8916-01