Cisco WS-C6506 Software Manual page 1399

Chapter 55 Configuring a VoIP Network
Setting the Power Mode of a Port or a Group of Ports
To set the power mode of a port or a group of ports, perform this task in normal mode:
Task
Set the power mode of a port or a group of ports. set port inlinepower mod/port {[auto | static]
If you configure the max-wattage values that are multiples of 500 on a Catalyst 6500 series switch with
Note
the set port inlinepower mod/port static | auto max-wattage command, the power that is drawn from
the global allocation is possibly slightly smaller than the power that is reported in the Total PWR
Allocated to Module field of the show environment power command. This discrepancy is due to the
internal conversion of units from Watts to cAmps and back to Watts. The difference between the total
allocated power and the total power that is drawn from the system is no more than +/- 0.42 W.
This example shows how to set the power mode of a port or group of ports:
Console> (enable) set port inlinepower 2/5 off
Inline power for port 2/5 set to off.
Console> (enable) set port inlinepower 2/3-9 auto 800
Inline power for ports 2/3-9 set to auto and max-wattage to 800.
Console> (enable)
Setting the Default Power Allocation
The set inlinepower defaultallocation command is global and only affects Cisco IP phones. The inline
power threshold notification generates a syslog message when the inline power usage exceeds the specified
threshold. To set the default power allocation, perform this task in privileged mode (the default allocation
value is 15400 milliwatts):
Caution The set inlinepower defaultallocation command can be harmful when there is not enough power in the
system to bring up all connected inline power devices. If you set a small value for the power allocation,
all connected inline power devices initially will be powered up. However, after receiving CDP messages,
the system will learn that devices are consuming more power and deny power to some of the ports.
Setting a small value might also result in the overdrawing of power for some time with unanticipated
results, such as hardware failures and unexpected resets.
7000 milliwatts is the maximum power supported for these modules: WS-X6348-RJ21V,
Note
WS-X6348-RJ-45V, WS-X6148-RJ-45V, and WS-X6148-RJ21V.
Task
Set the default power allocation.
OL-8978-04
Command
[max-wattage] | off}
Command
set inlinepower defaultallocation value
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
Configuring VoIP on a Switch
55-17