Configuring Power Policing On An Interface - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 15 Configuring Power over Ethernet

Configuring Power Policing on an Interface

The default policing levels are determined by the discovery and power allocation methods (listed in order
of priority):
•
•
•
To activate default PoE policing, enter the following:
Switch# conf t
Enter configuration commands, one per line.
Switch(config)# int g2/1
Switch(config-if)# power inline police
Switch(config-if)# end
Switch# show power inline police g2/1
Available:800(w)
Interface Admin
--------- ------ ---------- ---------- ---------- ------ -----
Gi2/1
The default action for power policing is to set the port to errdisable; the power inline police command
is equivalent to the power inline police action errdisable command, as the above example illustrates.
The following example illustrates how to configure the logging policing action:
Switch# conf t
Enter configuration commands, one per line.
Switch(config)# int g2/1
Switch(config-if)# power inline police action log
Switch(config-if)# end
Switch# show power inline police g2/1
Available:800(w)
Interface Admin
--------- ------ ---------- ---------- ---------- ------ -----
Gi2/1
When a PD consumes more than its allocated power, the port shuts down and a warning message similar
to the following appears on the console.
For the WS-X4648-GB-RJ45V and WS-X4648-GB-RJ45V+:
*Sep 12 09:15:28.583: %C4K_ETHPORTMAN-3-INLINEPOWEROVERDRAWN: Inline powered device
connected on port Gi3/25 exceeded its policed threshold.
For the WS-X4548-RJ45V+:
*Sep 26 09:23:21.355: %C4K_SWITCHMANAGER-3-INLINEPOWEROVERDRAWN: Inline powered device
connected on port Gi2/1 exceeded its policed threshold.
For actions of Log type, the port restarts itself and the device reboots. In contrast, when the action is to
set the port in an errdisable state, a log message similar to the following appears:
*Sep 26 09:30:20.463: %PM-4-ERR_DISABLE: inline-power error detected on Gi2/1, putting
Gi2/1 in err-disable state
Switch# show power inline police g2/1
Available:800(w)
Configured consumption values, in case any exist
CDP allocated values (for Cisco devices using CDP)
Allocated power from IEEE discovery (for devices using this mechanism)
Used:32(w)
Oper
State State
auto on
Used:32(w)
Oper
State State
auto on
Used:16(w)
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
End with CNTL/Z.
Remaining:768(w)
Admin Oper Cutoff Oper
Police Police Power
errdisable ok 17.2
End with CNTL/Z.
Remaining:768(w)
Admin Oper Cutoff Oper
Police Police Power
log ok 17.2
Remaining:784(w)
PoE Policing and Monitoring
Power
16.7
Power
16.7
15-13