User`s guide

Table of Contents
4
Chapter 3
Basic Switch Parameters ................................................................................................................................................................................36
When Does a Switch Need an IP Address? .................................................................................................................................................37
How Do You Assign an IP Address?...................................................................................................................................................... 38
Configuring an IP Address and Switch Name ...........................................................................................................................................39
Activating the BOOTP and DHCP Services .................................................................................................................................................42
Configuring SNMP Community Strings and Trap IP Addresses .........................................................................................................44
Resetting a Switch ...............................................................................................................................................................................................47
Configuring the AT-S39 Software Security Features ..............................................................................................................................48
Configuring the Management Passwords......................................................................................................................................... 48
Configuring Management Access ........................................................................................................................................................ 51
Viewing the AT-S39 Version Number and Switch MAC Address ........................................................................................................52
Pinging a Remote System ................................................................................................................................................................................53
Returning the AT-S39 Software to the Factory Default Values ...........................................................................................................54
Configuring the Console Startup Mode ......................................................................................................................................................55
Configuring BALUN Cable Detection ...........................................................................................................................................................56
Chapter 4
Enhanced Stacking ...........................................................................................................................................................................................57
Enhanced Stacking Overview .........................................................................................................................................................................58
Guidelines...................................................................................................................................................................................................... 58
Setting a Switch’s Enhanced Stacking Status ............................................................................................................................................61
Selecting a Switch in an Enhanced Stack ...................................................................................................................................................63
Returning to the Master Switch............................................................................................................................................................. 64
Chapter 5
Port Parameters .................................................................................................................................................................................................65
Displaying Port Status ........................................................................................................................................................................................66
Configuring Port Parameters ..........................................................................................................................................................................69
Displaying Uplink Information .......................................................................................................................................................................73
Chapter 6
Port Security ........................................................................................................................................................................................................75
Port Security Overview ......................................................................................................................................................................................76
Configuring Port Security .................................................................................................................................................................................78
Configuring the Limited Security Mode ......................................................................................................................................................80
Chapter 7
Port Trunking ......................................................................................................................................................................................................82
Port Trunking Overview ....................................................................................................................................................................................83
Load Distribution Methods..................................................................................................................................................................... 84
Creating a Port Trunk .........................................................................................................................................................................................89
Deleting a Port Trunk .........................................................................................................................................................................................91
Chapter 8
Port Mirroring .....................................................................................................................................................................................................92
Port Mirroring Overview ...................................................................................................................................................................................93
Creating a Port Mirror ........................................................................................................................................................................................94
Deleting a Port Mirror ........................................................................................................................................................................................95
Chapter 9
STP and RSTP .......................................................................................................................................................................................................96
STP and RSTP Overview .....................................................................................................................................................................................97
Bridge Priority and the Root Bridge..................................................................................................................................................... 98
Mixed STP and RSTP Networks ............................................................................................................................................................ 104
Spanning Tree and VLANs..................................................................................................................................................................... 104