Configuring Power Over Ethernet
December 2005
© Foundry Networks, Inc.
6 - 7
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There are two ways to configure the power level for a POE power consuming device. The first method is
discussed in this section. The other method is provided in the section “Setting the Power Class for a POE
Power Consuming Device” on page 6-7. For each POE port, you can configure either a maximum power level
or a power class. You cannot configure both. You can, however, configure a maximum power level on one
port and a power class on another port.
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The CLI commands for this feature differ on the FSX POE compared to the FES POE. On the FES POE,
there are separate CLI commands for 802.3af-compliant versus 802.3-af non-compliant power consuming
devices. On the FSX, there is one command for all power consuming devices. The command syntax is also
different on the FSX. To configure your device, refer to the appropriate section, below.
Command Syntax
To configure the maximum power level for a power consuming device, enter commands such as the following:
FastIron SuperX Router# config t
FastIron SuperX Router(config)# interface e 1/1
FastIron SuperX Router(config-if-e1000-1/1)# inline power power-limit 14000
These commands enable in-line power on interface e 1 in slot 1 and set the POE power level to 14,000 milliwatts
(14 watts).
Syntax:
inline power power-limit <power level>
where <power level> is the number of milliwatts, between 1000 and 15400. The default is 15400.
For information about resetting the maximum power level, see “Resetting POE Parameters” on page 6-9.
Setting the Power Class for a POE Power Consuming Device
A power class specifies the maximum amount of power that a Foundry POE device will supply to a power
consuming device. Table 6.3 shows the different power classes and their respective maximum power allocations.
By default, the power class for all power consuming devices is zero (0). As shown in Table 6.3, a power
consuming device with a class of 0 receives 15.4 watts of power.
Configuration Notes
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This feature is supported in the FSX POE devices running release 02.2.00 or later
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The power class sets the maximum power level for a power consuming device. Alternatively, you can set the
maximum power level as instructed in the section “Setting the Maximum Power Level for a POE Power
Consuming Device” on page 6-6. For each POE port, you can configure either a power class or a maximum
power level. You cannot configure both. You can, however, configure a power level on one port and power
class on another port.
•
The power class includes any power loss through the cables. For example, a POE port with a default power
Table 6.3: Power Classes for Power Consuming Devices
Class
Maximum
Power (Watts)
0
15.4 (default)
1
4
2
7
3
15.4
Содержание FastIron Edge Switch X424
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