Configuration Guide User guide

FastIron Configuration Guide 673
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Setting the power budget for a PoE interface module
These commands enable inline power on interface ethernet 1 in slot 1 and set the power class to
2.
Syntax: inline power power-by-class <class value>
The <class value> variable is the power class. Enter a value between 0 and 4. The default is 0.
Table 124 shows the different power classes and their respective maximum power allocations.
NOTE
Do not configure a class value of 4 on a PoE+ port on which a standard PoE PD is connected.
Standard PoE PDs support a maximum of 15.4 watts. Setting the power class value to 4 (30 watts)
could damage the PD.
For information about resetting the power class, refer to “Resetting PoE parameters” on page 675.
Setting the power budget for a PoE interface module
By default, each PoE and PoE+ interface module has a maximum power budget of 65535 watts. If
desired, you can change the amount of power allocated to each PoE and PoE+ interface module
installed in the chassis. To do so, enter a command such as the following.
Brocade(config)# inline power budget 150000 module 7
This command allocates 150000 milliwatts (150 watts) to the PoE interface module in slot 7. The
command takes effect immediately. The results are displayed in the “power budget” column in the
show inline power detail output. The configuration (
inline power budget 150000 module 7) is
displayed in the show running-config output.
Syntax: inline power budget <num> module <slot>
The <num> variable is the number of milliwatts to allocate to the module. Enter a value from 0
through 65535000.
The <slot> variable specifies the where the PoE or PoE+ module resides in the chassis.
Setting the inline power priority for a PoE port
Each PoE power supply can provide either 1080 or 2380 watts of power, and each PoE port
receives a maximum of 15.4 watts of power per PoE power-consuming device, or a maximum of 30
watts of power per PoE+ power-consuming device, minus any power loss through the cable. The
power capacity of one or two PoE power supplies is shared among all PoE power consuming
devices attached to the FastIron PoE device.
In a configuration where PoE power consuming devices collectively have a greater demand for
power than the PoE power supply or supplies can provide, the FastIron PoE device must place the
PoE ports that it cannot power in standby or denied mode (waiting for power) until the available
power increases. The available power increases when one or more PoE ports are powered down,
or, if applicable, when an additional PoE power supply is installed in the FastIron PoE device.
When PoE ports are in standby or denied mode (waiting for power) and the FastIron PoE device
receives additional power resources, by default, the device will allocate newly available power to
the standby ports in priority order, with the highest priority ports first, followed by the next highest
priority ports, and so on. Within a given priority, standy ports are considered in ascending order, by