Configuring Voice Vlan; Default Voice Vlan Configuration - Cisco 2950G 24 - Catalyst Switch Software Configuration Manual

Configuring Voice VLAN

Figure 16-1
Figure 16-1 Cisco 7960 IP Phone Connected to a Switch
Catalyst 2950 or
3550 switch
When the IP phone connects to the switch, the access port (PC-to-telephone jack) of the IP phone can
connect to a PC. Packets to and from the PC and to or from the IP phone share the same physical link to
the switch and the same switch port. For deployment examples that use voice VLANs, refer to the
"Network Configuration Examples" section on page
Configuring Voice VLAN
This section describes how to configure voice VLAN on access ports. It contains this configuration
information:
•
•
•

Default Voice VLAN Configuration

The voice VLAN feature is disabled by default.
When the voice VLAN feature is enabled, all untagged traffic is sent according to the default CoS
priority of the port.
The CoS value is trusted for all 802.1P or 802.1Q tagged traffic.
Catalyst 2950 Desktop Switch Software Configuration Guide
16-2
shows one way to connect a Cisco 7960 IP Phone.
Cisco IP Phone 7960
P1
Default Voice VLAN Configuration, page 16-2
Voice VLAN Configuration Guidelines, page 16-3
Configuring a Port to Connect to a Cisco 7960 IP Phone, page 16-3
Phone
ASIC
P2
P3
3-port
switch
Access
port
1-8.
Chapter 16 Configuring Voice VLAN
PC
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