120 U SER INTERFACE C ONFIGURATIONUser Interface Overview 2155Brief Introduction 2155Numbering User Interfaces 2156User Interface Configuration Task List 2156Configuring Asynchronous Serial Interface Attributes 2157Configuring Terminal Attributes 2157Configuring Modem Attributes 2158Configuring the auto-execute Command 2159Configuring User Privilege Level 2159Configuring Access Restriction on VTY User Interface(s) 2160Configuring Supported Protocols on VTY User Interface(s) 2160Configuring Redirection Function on Asynchronous Serial Interface(s) 2161Configuring Authentication Mode at Login 2162Defining Shortcut Keys for Starting Terminal Sessions/Aborting Tasks 2164Sending Messages to the Specified User Interface(s) 2164Releasing the Connection Established on the User Interface(s) 2164Displaying and Maintaining User Interface(s) 2164121 MAC A DDRESS TABLE M ANAGEMENT C ONFIGURATIONIntroduction to MAC Address Table 2165Configuring MAC Address Table Management 2166Configuring MAC Address Entries 2166Disabling Global MAC Address Learning 2166Disabling MAC Address Learning on an Ethernet Port or Aggregation PortGroup 2167Configuring MAC Address Aging Timer 2167Configuring Maximum Number of MAC Addresses an Ethernet Port orAggregation Port Group Can Learn 2168Displaying and Maintaining MAC Address Table Management 2168MAC Address Table Management Configuration Example 2169122 A UTOMATIC C ONFIGURATIONIntroduction to Automatic Configuration 2171How Automatic Configuration Works 2171123 P OE C ONFIGURATIONPoE Overview 2175Introduction to PoE 2175Protocol Specification 2176PoE Configuration Task List 2176Configuring the PSE 2176Configuring the PoE Interface 2177Configuring a PoE Interface through the Command Line 2177Configuring PoE Interfaces Through a PoE Configuration File 2178Configuring PoE Power Management 2179Configuring PSE Power Management 2179Configuring PD Power Management 2180Configuring the PoE Monitoring Function 2181Configuring a Power Alarm Threshold for the PSE 2181
