Dell PowerSwitch S4820T 9.50.1 Configuration Guide for the S4820T System - Page 933
Con the Network Time Protocol, Enabling NTP, Setting the Hardware Clock with the Time Derived
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Implementation Information Dell Networking systems can only be an NTP client. Configure the Network Time Protocol Configuring NTP is a one-step process. • Enabling NTP Related Configuration Tasks • Configuring NTP Broadcasts • Setting the Hardware Clock with the Time Derived from NTP • Disabling NTP on an Interface • Configuring a Source IP Address for NTP Packets (optional) Enabling NTP NTP is disabled by default. To enable NTP, specify an NTP server to which the Dell Networking system synchronizes. To specify multiple servers, enter the command multiple times. You may specify an unlimited number of servers at the expense of CPU resources. • Specify the NTP server to which the Dell Networking system synchronizes. CONFIGURATION mode ntp server ip-address Examples of Viewing System Clock To display the system clock state with respect to NTP, use the show ntp status command from EXEC Privilege mode. R6_E300(conf)#do show ntp status Clock is synchronized, stratum 2, reference is 192.168.1.1 frequency is -369.623 ppm, stability is 53.319 ppm, precision is 4294967279 reference time is CD63BCC2.0CBBD000 (16:54:26.049 UTC Thu Mar 12 2009) clock offset is 997.529984 msec, root delay is 0.00098 sec root dispersion is 10.04271 sec, peer dispersion is 10032.715 msec peer mode is client To display the calculated NTP synchronization variables received from the server that the system uses to synchronize its clock, use the show ntp associations command from EXEC Privilege mode. R6_E300(conf)#do show ntp associations remote ref clock st when poll reach delay offset disp #192.168.1.1 .LOCL. 1 16 16 76 0.98 -2.470 879.23 * master (synced), # master (unsynced), + selected, - candidate Setting the Hardware Clock with the Time Derived from NTP To set the hardware clock, use the following command. • Periodically update the system hardware clock with the time value derived from NTP. System Time and Date 933
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