Users Guide

Selecting STP Root..................................................................................................................................................... 1005
STP Root Guard...........................................................................................................................................................1005
Root Guard Scenario............................................................................................................................................. 1005
Conguring Root Guard........................................................................................................................................ 1006
Enabling SNMP Traps for Root Elections and Topology Changes......................................................................... 1007
STP Loop Guard........................................................................................................................................................... 1007
Conguring Loop Guard........................................................................................................................................ 1008
Displaying STP Guard Conguration..........................................................................................................................1009
55 SupportAssist......................................................................................................................................... 1010
Conguring SupportAssist Using a Conguration Wizard........................................................................................1011
Conguring SupportAssist Manually........................................................................................................................... 1011
Conguring SupportAssist Activity.............................................................................................................................1013
Conguring SupportAssist Company......................................................................................................................... 1014
Conguring SupportAssist Person..............................................................................................................................1015
Conguring SupportAssist Server.............................................................................................................................. 1016
Viewing SupportAssist Conguration.........................................................................................................................1016
56 System Time and Date............................................................................................................................1019
Network Time Protocol................................................................................................................................................ 1019
Protocol Overview................................................................................................................................................. 1020
Congure the Network Time Protocol................................................................................................................ 1020
Enabling NTP...........................................................................................................................................................1021
Conguring NTP Broadcasts.................................................................................................................................1021
Disabling NTP on an Interface...............................................................................................................................1021
Conguring a Source IP Address for NTP Packets............................................................................................1022
Conguring NTP Authentication.......................................................................................................................... 1022
Time and Date...............................................................................................................................................................1024
Conguration Task List ......................................................................................................................................... 1024
Setting the Time and Date for the Switch Software Clock..............................................................................1025
Setting the Timezone............................................................................................................................................ 1025
Set Daylight Saving Time...................................................................................................................................... 1026
Setting Daylight Saving Time Once..................................................................................................................... 1026
Setting Recurring Daylight Saving Time..............................................................................................................1026
Conguring a Custom-dened Period for NTP time Synchronization............................................................ 1028
57 Tunneling ............................................................................................................................................... 1029
Conguring a Tunnel.................................................................................................................................................... 1029
Conguring Tunnel Keepalive Settings...................................................................................................................... 1030
Conguring a Tunnel Interface................................................................................................................................... 1030
Conguring Tunnel allow-remote Decapsulation.......................................................................................................1031
Conguring Tunnel source anylocal Decapsulation................................................................................................... 1031
Multipoint Receive-Only Tunnels.................................................................................................................................1031
Guidelines for Conguring Multipoint Receive-Only Tunnels............................................................................1032
58 Upgrade Procedures...............................................................................................................................1033
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