Specific Commands for the Catalyst 4500 and 6500
4500 series:
The preceding 4 steps describe how many power supplies are active, total wattage available, total wattage
used, wattage used per module (blade) and which ports are delivering power, etc. The following commands
enable 802.3af PoE at the port level and apply a method for that port’s power.
IOS release 12.1(19)EW and higher:
Switch(config-if)#
power inline
{
auto
[
max
[
milli-watts
] |
never
|
static
[
max
[
milli-watts
] |
allocation
}
Power inline
sets the interface (port) to sense for and apply power if a PD is connected.
Auto
will sense the class of a non-Cisco PD and apply power of the top of the class range
Max
[milli-watts] allows you to specify a power ceiling that is lower than the class maximum, but higher than
the PD requires. Valid range is 2000 to 15400 milli-watts. This option will reduce the amount of logically
reserved power and is especially important when using class-3 PDs.
Static
acts the same as auto except that it pre-allocates power to that port during startup. This is useful for
important PDs like access points and critical phones because it gives them priority over other PDs by pre-
allocating power.
Max
[milli-watts] allows you to specify a power ceiling that is lower than the class maximum, but higher than
the PD requires. Valid range is 2000 to 15400 milli-watts. This option will reduce the amount of logically
reserved power and is especially important when using class-3 PDs.
Never
disallows power to a port – even if a PD is connected.
Allocation
works much like the “
max
[milli-watt]” option of auto and static where you can specify a power
ceiling for a port or globally for the entire switch. This command option allows you to specify a power value
independently from the PD class. Therefore PD class value is not determined and no errors result from
specifying a value that is above the class range for that PD. This can save time if more than one PD class
is used. An example is having class-2 and class-3 PDs on a switch and setting the allocation value to 9-
Watts. Class-2 ceiling is 7-watts, so using
power inline auto 9000
would not work for class-2 PDs
because it exceeds the class limit. However, using
power inline allocation 9000
would work for
both class-2 and class-3 phones because class limits are not considered. Valid values are 2000 to 15200
milliwatts. This option will reduce the amount of logically reserved power and is especially important when
using class-3 PDs.
MJK
Copyright ©
2006 Avaya Inc. All Rights Reserved.
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