Concept Guide

Conguring Root Guard..........................................................................................................................................850
SNMP Traps for Root Elections and Topology Changes........................................................................................... 851
Displaying STP Guard Conguration............................................................................................................................ 851
57 SupportAssist.......................................................................................................................................... 852
Conguring SupportAssist Using a Conguration Wizard........................................................................................853
Conguring SupportAssist Manually........................................................................................................................... 853
Conguring SupportAssist Activity............................................................................................................................. 855
Conguring SupportAssist Company..........................................................................................................................856
Conguring SupportAssist Person...............................................................................................................................857
Conguring SupportAssist Server............................................................................................................................... 857
Viewing SupportAssist Conguration......................................................................................................................... 858
58 System Time and Date.............................................................................................................................860
Network Time Protocol.................................................................................................................................................860
Protocol Overview....................................................................................................................................................861
Congure the Network Time Protocol...................................................................................................................861
Enabling NTP............................................................................................................................................................862
Conguring NTP Broadcasts................................................................................................................................. 862
Disabling NTP on an Interface................................................................................................................................862
Conguring a Source IP Address for NTP Packets............................................................................................. 863
Conguring NTP Authentication............................................................................................................................863
Conguring NTP control key password................................................................................................................865
Dell Networking OS Time and Date.............................................................................................................................865
Conguration Task List .......................................................................................................................................... 865
Set Daylight Saving Time........................................................................................................................................866
Conguring the Oset-Threshold for NTP Audit Log......................................................................................... 868
59 Tunneling ................................................................................................................................................ 869
Conguring a Tunnel......................................................................................................................................................869
Conguring Tunnel keepalive........................................................................................................................................870
Conguring the ip and ipv6 unnumbered....................................................................................................................870
Conguring the Tunnel allow-remote........................................................................................................................... 871
Conguring the Tunnel Source Anylocal...................................................................................................................... 871
60 Uplink Failure Detection (UFD)................................................................................................................ 873
Supported Modes.......................................................................................................................................................... 873
Feature Description........................................................................................................................................................873
How Uplink Failure Detection Works............................................................................................................................874
UFD and NIC Teaming...................................................................................................................................................875
Important Points to Remember....................................................................................................................................876
Uplink Failure Detection (SMUX mode)...................................................................................................................... 876
Conguring Uplink Failure Detection (PMUX mode).................................................................................................877
Clearing a UFD-Disabled Interface (in PMUX mode)................................................................................................ 878
Displaying Uplink Failure Detection.............................................................................................................................. 879
Sample Conguration: Uplink Failure Detection..........................................................................................................881
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