Cisco Catalyst 4500 Series - Displaying the Poe Consumed by a Module

13-8
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
OL-25340-01
Chapter 13 Configuring Power over Ethernet
Displaying the PoE Consumed by a Module
Switch(config-if)#
*Oct 17 12:02:48.407: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi5/5: PD removed
Switch(config-if)# no shut
Switch(config-if)#
*Oct 17 12:02:54.915: %ILPOWER-7-DETECT: Interface Gi5/5: Power Device detected: IEEE PD
Displaying the PoE Consumed by a Module
A Catalyst 4500 series switch can measure the actual PoE consumption for an 802.3af-compliant PoE
module. You can observe this consumption by using show power module and show power detail
commands. For all PoE calculations, presume that the PoE consumption on the WS-X4148-RJ45V
module equals its administrative PoE.
The 802.3af-compliant PoE modules can consume up to 20 W of PoE to power FPGAs and other
hardware components on the module. To ensure that the system has sufficient power for the PDs
connected to the switch, add at least 20 W to your PoE requirements for each 802.3af-compliant PoE
module.
The following example uses the show power module command to display the PoE consumption for an
802.3af-compliant module:
Switch# show power module
Power fail interrupts received on slot 1: 0
Power fail interrupts received on slot 2: 0
Debounce value for power fail status: 0 microseconds
Watts Used of System Power(12V)
Mod Model budgeted instantaneous peak out of reset in reset
---- ------------------- -------- ------------- ------ ------------ --------
1 WS-X4748-RJ45V+E 75 42 42 75 35
2 WS-X4712-SFP+E 90 34 34 90 5
5 WS-X45-SUP7-E 260 204 204 260 100
-- Fan Tray 255 -- -- -- --
------------------------- -------- ------------- ------ ------------ --------
Total 680 280 280 425 140
Watts used of Chassis Inline Power (-50V)
Inline Power Admin Inline Power Oper
Mod Model PS Device PS Device Efficiency
---- ------------------- ---------------- ---------------- ----------
1 WS-X4748-RJ45V+E - - - - -
2 WS-X4712-SFP+E - - - - -
5 WS-X45-SUP7-E - - - - -
------------------------- ---------------- ---------------- ----------
Total 0 0 0 0
Switch#
Note “Watts budgeted” is not relevant for C4500-X series switches.
The Inline Power Oper column displays the amount of PoE consumed by the powered devices that are
attached to the module, in addition to the PoE consumed by the FPGAs and other hardware components
on the module.
The Inline Power Admin column displays only the amount of PoE allocated by the powered devices
attached to the module.