Cisco 500 Series - Power over Ethernet (PoE) Considerations; PoE Switch Specifications; PoE Usage Warnings and Guidelines

Cisco 500 Series Stackable Managed Switch Administration Guide 4
Contents
Loopback Detection 184
Link Aggregation 186
UDLD 194
PoE 194
Configuring Green Ethernet 194
Chapter 11: Port Management: Unidirectional Link Detection 202
UDLD Overview 202
UDLD Operation 203
Usage Guidelines 205
Dependencies On Other Features 206
Default Settings and Configuration 206
Before You Start 207
Common UDLD Tasks 207
Configuring UDLD 208
Chapter 12: Smartport 212
Overview 213
What is a Smartport 214
Smartport Types 214
Smartport Macros 216
Macro Failure and the Reset Operation 218
How the Smartport Feature Works 218
Auto Smartport 219
Error Handling 223
Default Configuration 223
Relationships with Other Features and Backwards Compatibility 224
Common Smartport Tasks 224
Configuring Smartport Using The Web-based Interface 226
Built-in Smartport Macros 231