Power policing protects a PoE switch from a powered device (PD) that draws more than its configured cutoff. When the limit is exceeded, the switch error-disables the port, stopping data and power transmission and generating a Syslog message. section 10.1.2
Configure and recover the feature as follows:
- Enter interface configuration mode and enable policing with power inline police. section 10.1.2
- Verify administrative state, operational state, cutoff power, and operating power with show power inline police. section 10.1.2 section 10.7
- Before recovery, disconnect the device that caused the excess draw; then use shutdown followed by no shutdown. section 10.1.2
Enable and verify policing
SW1(config)# interface range f0/1-2 SW1(config-if-range)# power inline police SW1(config-if-range)# do show power inline police Fa0/1 auto On errdisable ok 15.4 8.5 Fa0/2 auto On errdisable ok 15.4 8.5 The output shows policing enabled administratively, normal operation currently reported, a 15.4-watt cutoff, and 8.5 watts of operating power. section 10.1.2
SW1(config)# interface range f0/1-2
SW1(config-if-range)# power inline police #1
SW1(config-if-range)# do show power inline police
Available:124.0(w) Used:30.8(w) Remaining:93.2(w)
Interface Admin Oper Admin Oper Cutoff Oper
State State Police Police Power Power
--------- ------ ---------- ---------- ---------- ------ ----- #2
Fa0/1 auto On errdisable ok 15.4 8.5 #2
Fa0/2 auto On errdisable ok 15.4 8.5
. . .
#1 Enables power policing
#2 The cutoff power is 15.4 watts.
Inspect the annotated Cisco IOS configuration and verification listing for power policing. section 10.1.2
