55-20
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 55 Configuring a VoIP Network
Configuring VoIP on a Switch
Slot Inline Power Requirement/Usage :
Slot CardType Total Allocated Max H/W Supported Max H/W
Supported
To Module (Watts) Per Module (Watts) Per Port (Watts)
---- ------------------- ----------------- ------------------ ----------------
3 WS-X6548-RJ-45 31.08 315.84 15.400
6 WS-X6148-GE-TX 26.46 315.84 7.000
Console> (enable)
A partial-deny status indicates that some module ports are inline powered but not all the ports on the
module are inline powered.
Configuring the Auxiliary VLANs on Catalyst LAN Switches
These sections describe how to configure auxiliary VLANs:
•
Understanding the Auxiliary VLANs, page 55-20
•
Auxiliary VLAN Configuration Guidelines, page 55-21
•
Configuring the Auxiliary VLANs, page 55-21
•
Verifying the Auxiliary VLAN Configuration, page 55-22
•
Disabling the Auxiliary VLANs Until an IP Phone is Detected, page 55-22
Understanding the Auxiliary VLANs
You can configure the switch ports to send CDP packets that instruct an attached Cisco IP Phone 7960
to transmit the voice traffic to the switch in these frame types:
•
802.1Q frames carrying the auxiliary VLAN ID and Layer 2 CoS set to 5 (the switch port drops all
802.1Q frames except those carrying the auxiliary VLAN ID).
–
Reset the Cisco IP Phone 7960 if the auxiliary VLAN ID changes.
–
Enter the
set port auxiliaryvlan
mod
[/
port
]
aux_vlan_id
command.
Note
We recommend that you use 802.1Q frames and a separate VLAN.
•
802.1p frames, which are 802.1Q frames carrying VLAN ID 0 and Layer 2 CoS set to 5 (enter the
set port auxiliaryvlan
mod
[/
port
]
dot1p
command).
•
802.3 frames, which are untagged and carry no VLAN ID and no Layer 2 CoS value (enter the
set
port auxiliaryvlan
mod
[/
port
]
untagged
command).
Note
The Cisco IP Phone 7960 always sets the Layer 3 IP precedence to 5 in the voice traffic.
