Chapter 4
  |  System Management Commands
Time
–  143  –
Example 
Console(config)#ntp server 192.168.3.20
Console(config)#ntp server 192.168.3.21
Console(config)#ntp server 192.168.5.23 key 19
Console(config)#
Related Commands
ntp client (141)
show ntp (143)
show ntp
This command displays the current time and configuration settings for the NTP 
client, and indicates whether or not the local time has been properly updated.
Command Mode 
Normal Exec, Privileged Exec
Command Usage 
This command displays the current time, the poll interval used for sending time 
synchronization requests, and the current NTP mode (i.e., unicast).
Example 
Console#show ntp
Current Time             : Apr 29 13:57:32 2015
Polling                  : 1024 seconds
Current Mode             : unicast
NTP Status               : Disabled
NTP Authenticate Status  : Enabled
Last Update NTP Server   : 0.0.0.0        Port: 0
Last Update Time         : Jan  1 00:00:00 1970 UTC
NTP Server 192.168.3.20 version 3
NTP Server 192.168.3.21 version 3
NTP Server 192.168.4.22 version 3 key 19
NTP Authentication Key 19 md5 42V68751663T6K11P2J307210R885
Console#
Manual Configuration Commands
clock summer-time
(date)
This command sets the start, end, and offset times of summer time (daylight 
savings time) for the switch on a one-time basis. Use the 
no
 form to disable 
summer time.
Syntax
clock summer-time
 name 
date
 b-date b-month b-year b-hour b-minute e-date 
e-month e-year e-hour e-minute [offset]
no clock summer-time
name - Name of the time zone while summer time is in effect, usually an 
acronym. (Range: 1-30 characters)