Cisco Catalyst 4500 Series Administration Guide

43-4
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
Chapter 43 Configuring Voice Interfaces
Configuring Voice Ports for Voice and Data Traffic
In the following example, VLAN 1 carries data traffic, and VLAN 2 carries voice traffic. In this
configuration, you must connect all Cisco IP phones and other voice-related devices to switch ports that
belong to VLAN 2.
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# interface fastEthernet 3/1
Switch(config-if)# switchport mode access
Switch(config-if)# switchport voice vlan 2
Switch(config-if)# switchport access vlan 3
Switch(config-if)# end
Switch# show interfaces fastEthernet 3/1 switchport
Name: Fa3/1
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: native
Negotiation of Trunking: Off
Access Mode VLAN: 3 (VLAN0003)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: 2 (VLAN0002)
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
Switch#
Step 3
Switch(config-if)# switchport mode access
Configures the interface as an access port.
The voice VLAN is active only on access ports.
Step 4
Switch(config-if)# switchport voice vlan
vlan_num
Instructs the Cisco IP phone to forward all voice traffic
through a specified VLAN. The Cisco IP phone forwards
the traffic with an 802.1p priority of 5.
Step 5
Switch(config-if)# switchport access vlan
data_vlan_num
Configures the access VLAN (the data VLAN) on the port.
Step 6
Switch(config-if)# end
Returns to privileged EXEC mode.
Step 7
Switch# show interface {fastethernet |
gigabitethernet} slot/port switchport
Verifies the configuration.
Command Purpose

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E