Configuring Loop Guard............................................................................................................882
Displaying STP Guard Configuration...............................................................................................883
53 System Time and Date...................................................................................885
Network Time Protocol....................................................................................................................885
Protocol Overview......................................................................................................................886
Configure the Network Time Protocol......................................................................................887
Enabling NTP...............................................................................................................................887
Configuring NTP Broadcasts......................................................................................................887
Disabling NTP on an Interface...................................................................................................888
Configuring a Source IP Address for NTP Packets....................................................................888
Configuring NTP Authentication................................................................................................888
Time and Date...................................................................................................................................892
Configuration Task List ..............................................................................................................892
Setting the Time and Date for the Switch Software Clock.......................................................892
Setting the Timezone.................................................................................................................892
Set Daylight Saving Time............................................................................................................893
Setting Daylight Saving Time Once............................................................................................893
Setting Recurring Daylight Saving Time....................................................................................894
54 Tunneling ....................................................................................................... 896
Configuring a Tunnel........................................................................................................................896
Configuring Tunnel Keepalive Settings............................................................................................897
Configuring a Tunnel Interface........................................................................................................898
Configuring Tunnel allow-remote Decapsulation..........................................................................898
Configuring Tunnel source anylocal Decapsulation.......................................................................899
Multipoint Receive-Only Tunnels....................................................................................................899
Guidelines for Configuring Multipoint Receive-Only Tunnels.................................................899
55 Upgrade Procedures......................................................................................901
Upgrade OverviewGet Help with Upgrades.....................................................................................901
Z9500 Bootup and Upgrades...........................................................................................................901
56 Uplink Failure Detection (UFD)....................................................................903
Feature Description..........................................................................................................................903
How Uplink Failure Detection Works..............................................................................................904
UFD and NIC Teaming......................................................................................................................905
Important Points to Remember.......................................................................................................905
Configuring Uplink Failure Detection..............................................................................................906
Clearing a UFD-Disabled Interface..................................................................................................908
Displaying Uplink Failure Detection.................................................................................................909
Sample Configuration: Uplink Failure Detection..............................................................................911