Reference Guide

Configure Storm Control..................................................................................................................915
Configuring Storm Control from INTERFACE Mode................................................................. 915
Configuring Storm Control from CONFIGURATION Mode...................................................... 915
57 Spanning Tree Protocol (STP)...................................................................... 916
Protocol Overview............................................................................................................................ 916
Configure Spanning Tree..................................................................................................................916
Related Configuration Tasks.......................................................................................................916
Important Points to Remember..................................................................................................917
Configuring Interfaces for Layer 2 Mode......................................................................................... 917
Enabling Spanning Tree Protocol Globally...................................................................................... 918
Adding an Interface to the Spanning Tree Group...........................................................................920
Removing an Interface from the Spanning Tree Group..................................................................921
Modifying Global Parameters........................................................................................................... 921
Modifying Interface STP Parameters................................................................................................922
Enabling PortFast.............................................................................................................................. 923
Prevent Network Disruptions with BPDU Guard............................................................................. 923
Global BPDU Filtering....................................................................................................................... 925
Interface BPDU Filtering................................................................................................................... 926
Selecting STP Root............................................................................................................................927
STP Root Guard.................................................................................................................................927
Root Guard Scenario...................................................................................................................927
Configuring Root Guard.............................................................................................................928
Enabling SNMP Traps for Root Elections and Topology Changes.................................................929
Configuring Spanning Trees as Hitless............................................................................................ 929
STP Loop Guard................................................................................................................................930
Configuring Loop Guard.............................................................................................................931
Displaying STP Guard Configuration............................................................................................... 932
58 System Time and Date...................................................................................933
Network Time Protocol....................................................................................................................933
Protocol Overview......................................................................................................................934
Configure the Network Time Protocol...................................................................................... 935
Enabling NTP...............................................................................................................................935
Configuring NTP Broadcasts...................................................................................................... 935
Disabling NTP on an Interface....................................................................................................936
Configuring a Source IP Address for NTP Packets....................................................................936
Configuring NTP Authentication................................................................................................936
Dell Networking OS Time and Date................................................................................................ 940
Configuration Task List ..............................................................................................................940
Setting the Time and Date for the Switch Software Clock.......................................................940
Setting the Timezone................................................................................................................. 940