Cisco 500 Series Administration Guide

Port Management: PoE
PoE Settings
Cisco 500 Series Stackable Managed Switch Administration Guide 250
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• Class—This field is enterable only if the Power Mode set in the PoE
Properties page is Class Limit. The class determines the power level:
• Overload Counter—Displays the total number of power overload
occurrences.
• Short Counter—Displays the total number of power shortage occurrences.
• Denied Counter—Displays number of times the powered device was
denied power.
• Absent Counter—Displays the number of times that power was stopped to
the powered device, because the powered device was no longer detected.
• Invalid Signature Counter—Displays the times an invalid signature was
received. Signatures are the means by which the powered device identifies
itself to the PSE. Signatures are generated during powered device
detection, classification, or maintenance.
STEP 4 Click Apply. The PoE settings for the port are written to the Running Configuration
file.
Class Maximum Power Delivered by Device Port
0 15.4 watt
14.0 watt
27.0 watt
3 15.4 watt
430.0 watt

Cisco 500 Series Specifications

General

Model	Cisco 500 Series
Category	Switch
Mounting	Rack-mountable
Management	Web-based, CLI, SNMP
Ports	24, 48
Port Speed	10/100/1000 Mbps
PoE Support	Available on some models
Switching Capacity	Up to 176 Gbps
MAC Address Table Size	16, 000 entries
Security	ACLs, 802.1X
Quality of Service (QoS)	Yes
Dimensions	Varies by model
Weight	Varies by model
Humidity	10% to 90% non-condensing
Power Supply	Internal
Power Consumption	Varies by model
Jumbo Frame Support	Up to 9216 bytes