User`s guide

Contents v
Setting SNMP Trap Destinations (Trapdest) ................................................................... 7-6
Specifying Community Names for Trap Messages (Trapcomm) .................................... 7-7
Specifying the Type of Log to Cause an SNMP Trap (Loglevel) ................................... 7-7
Enabling Authentication Failure Trap (Authtrap) ........................................................... 7-7
Chapter 8 - Using the Spanning Tree Protocol ......................................... 8-1
Overview .............................................................................................................................. 8-2
Understanding Loops ..................................................................................................... 8-3
How STP Protocol Works ..................................................................................................... 8-4
Receiving ConÞguration Messages ................................................................................. 8-4
Determining the Root Bridge and Root Cost .................................................................. 8-5
Determining the Spanning Tree ...................................................................................... 8-6
Understanding Bridge Failures ....................................................................................... 8-6
Avoiding Temporary Loops ............................................................................................ 8-6
Establishing Timeouts ..................................................................................................... 8-7
Node Address Aging ....................................................................................................... 8-7
Implementing STP Protocol .................................................................................................. 8-8
Using the ConÞguration STP Menu (Root Bridge Only) ....................................................... 8-9
Enabling STP Protocol (Active) .............................................................................. 8-9
Setting Bridge Parameters (Bridge) ......................................................................... 8-9
Setting the Bridge Priority (Priority) ..................................................................... 8-10
Setting the Hello Message Interval Time (Hello_Time) ........................................ 8-13
Setting the Forwarding Delay Time (Forward_Delay) .......................... 8-13
Setting the Receive Hello Message Timeout (Msg_age_timeout) ......................... 8-13
Setting Port Parameters (Port) ....................................................................................... 8-14
Enabling the STP Protocol (Port) ........................................................................... 8-14
Setting the Local Port Priority (Priority) ............................................................... 8-15
Setting the Local Port Cost (Cost) ......................................................................... 8-15
ConÞguring Ports of Active Connected Repeaters (Rport, Rcost, Rpriority) ........ 8-15
Displaying the Protocol Status (Display) ...................................................................... 8-16
Viewing the Port State (State) ....................................................................................... 8-17