Table of Contents

Power over Ethernet

IEEE 802.3af

PoE ClassMax.Power at 48V DCNote
0 15.4 W Default
1 4.0 W
2 7.0 W
3 15.4 W
4 up to 50 W Optional(802.3at)

ILP (Cisco Inline Power)

Switch# debug ilpower controller
Switch# debug cdp packets
Switch# debug ilpower controller
Switch# debug cdp packets

00:58:46: ILP uses AC Disconnect(Fa1/0/47): state= ILP_DETECTING_S, event=PHY_CSCO_DETECTED_EV
00:58:46: %ILPOWER-7-DETECT: Interface Fa1/0/47: Power Device detected: Cisco PD
00:58:46: Ilpower PD device 1 class 2 from interface (Fa1/0/47)
00:58:46: ilpower new power from pd discovery Fa1/0/47, power_status ok
00:58:46: Ilpower interface (Fa1/0/47) power status change, allocated power 15400
00:58:46: ILP Power apply to ( Fa1/0/47 ) Okay
00:58:46: ILP Start PHY Cisco IP phone detection ( Fa1/0/47 ) Okay
00:58:46: %ILPOWER-5-POWER_GRANTED: Interface Fa1/0/47: Power granted
00:58:46: ILP uses AC Disconnect(Fa1/0/47): state= ILP_CSCO_PD_DETECTED_S, event=IEEE_PWR_GOOD_EV
00:58:48: ILP State_Machine ( Fa1/0/47 ): State= ILP_PWR_GOOD_USE_IEEE_DISC_S, Event= PHY_LINK_UP_EV
00:58:48: ILP uses AC Disconnect(Fa1/0/47): state= ILP_PWR_GOOD_USE_IEEE_DISC_S, event= PHY_LINK_UP_EV
00:58:50: %LINK-3-UPDOWN: Interface FastEthernet1/0/47, changed state to up
00:58:50: CDP-AD: Interface FastEthernet1/0/47 coming up
00:58:50: ilpower_powerman_power_available_tlv: about sending patlv on Fa1/0/47
00:58:50: req id 0, man id 1, pwr avail 15400, pwr man –1
00:58:50: CDP-PA: version 2 packet sent out on FastEthernet1/0/47
00:58:51: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/47,changed state to up
00:58:54: CDP-PA: Packet received from SIP0012435D594D on interface FastEthernet1/0/47
00:58:54: **Entry NOT found in cache**
00:58:54: Interface(Fa1/0/47) - processing old tlv from cdp, request 6300, current allocated 15400
00:58:54: Interface (Fa1/0/47) efficiency is 100
00:58:54: ilpower_powerman_power_available_tlv: about sending patlv on Fa1/0/47
00:58:54: req id 0, man id 1, pwr avail 6300, pwr man –1
00:58:54: CDP-PA: version 2 packet sent out on FastEthernet1/0/47

Konfigurace PoE

Switch(config)# interface type mod/num
Switch(config-if)# power inline {auto [max milli-watts] | static [max milli-watts] | never}
Switch# show power inline [type mod/num]
Switch# show power inline
Module	Available	Used		Remaining
	(Watts)		(Watts)		(Watts)
------	--------- 	-------- 	---------
1	370.0		39.0		331.0

Interface  Admin  Oper 		Power 	 Device 	     Class  Max
				(Watts)
---------  ------ ---------- 	-------  ------------------- -----  ----
Fa1/0/1    auto   on 		6.5 	 AIR-AP1231G-A-K9    n/a    15.4
Fa1/0/2    auto   on 		6.3 	 IP Phone 7940       n/a    15.4
Fa1/0/3    auto   on 		6.3 	 IP Phone 7960       n/a    15.4
Fa1/0/4    auto   on 		15.4 	 Ieee PD             0      15.4
Fa1/0/5    auto   on 		4.5 	 Ieee PD             1      15.4
Fa1/0/6    static on 		15.4 	 n/a                 n/a    15.4
Fa1/0/7    auto   off 		0.0 	 n/a                 n/a    15.4
[output omitted]