Understanding How Vlans Work - Cisco WS-X6066-SLB-APC - Content Switching Module Software Manual

Understanding How VLANs Work

Understanding How VLANs Work
This section describes native VLANs and auxiliary VLANs. This section uses the following
terminology:
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For more information about VLANs, see
Note
Figure 44-3
Figure 44-3 Switch-to-Phone Connections
When the IP phone connects to a 10/100 port on the Catalyst 6000 family switch, the access port
(PC-to-phone jack) of the IP phone can be used to connect a PC.
Packets to and from the PC and to and from the phone share the same physical link to the switch and the
same port of the switch. Various configurations of connecting the phone and the PC are possible (see the
"Cisco IP Phone 7960" section on page
Introducing IP-based phones into existing switch-based networks raises the following issues:
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Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
44-8
Auxiliary VLAN—Separate VLAN for IP phones
Native VLAN—Traditional VLAN for data
Auxiliary VLAN ID—VLAN ID of an auxiliary VLAN
Native VLAN ID—VLAN ID of a native VLAN
shows how a Cisco IP Phone 7960 can be connected to a Catalyst 6000 family switch.
The current VLANs might be configured on an IP subnet basis and additional IP addresses might
not be available to assign the phone to a port so that it belongs to the same subnet as other devices
(PC) connected to the same port.
Data traffic present on the VLAN supporting phones might reduce the quality of VoIP traffic.
Chapter 11, "Configuring VLANs."
44-2).
Chapter 44 Configuring a VoIP Network
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