46-4
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 46 Configuring Voice Interfaces
Overriding the CoS Priority of Incoming Frames
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#
Overriding the CoS Priority of Incoming Frames
A PC or another data device can connect to a Cisco 7960 IP Phone port. The PC can generate packets
with an assigned CoS value. You can also use the switch CLI to override the priority of frames arriving
on the phone port from connected devices, and you can set the phone port to accept (trust) the priority
of frames arriving 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
Summary of Contents for Catalyst 4500 Series
Page 2: ......
Page 4: ......
Page 2086: ...Index IN 46 Software Configuration Guide Release IOS XE 3 9 0E and IOS 15 2 5 E ...
