Voice Vlan Configuration Guidelines; Configuring A Port To Connect To A Cisco 7960 Ip Phone; Configuring Ports To Carry Voice Traffic In 802.1Q Frames; Configuring Ports To Carry Voice Traffic In 802.1P Priority-Tagged Frames - Cisco 2950 - Catalyst Switch Configuration Manual

Chapter 19 Configuring Voice VLAN

Voice VLAN Configuration Guidelines

These are the voice VLAN configuration guidelines:
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Configuring a Port to Connect to a Cisco 7960 IP Phone

Because a Cisco 7960 IP Phone also supports a connection to a PC or other device, a port connecting the
switch to a Cisco 7960 IP Phone can carry mixed traffic.
You can configure the port to carry voice traffic in one of these ways:
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You can configure the IP phone to carry data traffic in one of these ways:
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You should configure voice VLAN on switch access ports.
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.
When you enable port security on an interface that is also configured with a voice VLAN, you must
set the maximum allowed secure addresses on the port to at least two.
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 port security on a per-VLAN basis.
You cannot configure static secure or sticky secure MAC addresses on a voice VLAN.
Voice VLAN ports can also be these port types:
Dynamic access port. See the
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on page 17-28 for more information.
Secure port. See the "Configuring Port Security" section on page 22-7
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802.1x authenticated port. See the
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for more information.
If you enable 802.1x on an access port on which a voice VLAN is configured and to
Note
which a Cisco IP Phone is connected, the Cisco IP Phone loses connectivity to the
switch for up to 30 seconds.
Protected port. See the
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information.
Configuring Ports to Carry Voice Traffic in 802.1Q Frames, page 19-4
Configuring Ports to Carry Voice Traffic in 802.1p Priority-Tagged Frames, page 19-4
Overriding the CoS Priority of Incoming Data Frames, page 19-5
Configuring the IP Phone to Trust the CoS Priority of Incoming Data Frames, page 19-6
"Configuring Dynamic Access Ports on VMPS Clients" section
"Using 802.1x with Voice VLAN Ports" section on page 10-7
"Configuring Protected Ports" section on page 22-4
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
Configuring Voice VLAN
for more information.
for more
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