Ntp Configuration - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 5 Initial Configuration
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Command
Step 3
switch(config)# clock summer-time
daylight_timezone_name start_week
start_day start_month start_time end_week
end_day end_month end_time
daylight_offset_inminutes
Example:
switch(config)# clock summer-time PDT 2
Sunday March 02:00 1 Sunday November 02:00
60
switch(config)#
switch(config)# no clock summer-time
Step 4
switch(config)# exit
switch#
Step 5
switch# show running-config | include
summer-time
In 2007, the U. S. the daylight Daylight saving time adjustment occurs on the second Sunday in March
and end on the first Sunday in November. You can update the configuration of your switch to
accommodate this change using the following command:
switch(config)# clock summer-time daylight_timezone_name 2 Sunday March 02:00 1 Sunday
November 02:00 60
CFS does not support daylight savings time because a single fabric can span multiple time zones; every
Note
switch must be configured individually.
If you want to configure daylight savings time on multiple switches simultaneously, see the RUN CLI
command feature in the Cisco MDS 9000 Family Fabric Manager Configuration Guide.

NTP Configuration

A Network Time Protocol (NTP) server provides a precise time source (radio clock or atomic clock) to
synchronize the system clocks of network devices. NTP is transported over User Datagram Protocol
UDP/IP. All NTP communications use Universal Time Coordinated (UTC). An NTP server receives its
time from a reference time source, such as a radio clock or atomic clock, attached to the time. NTP
distributes this time across the network.
This section includes the following sections:
•
OL-18084-01, Cisco MDS NX-OS Release 4.x
About NTP, page 5-20
Purpose
Sets the daylight savings time for a specified time
zone.
The start and end values are as follows:
• Week ranging from 1 through 5
Day ranging from Sunday through Saturday
•
Month ranging from January through
•
December
The daylight offset ranges from 1 through 1440
minutes, which are added to the start time and
deleted time from the end time.
This example adjusts the daylight savings time for
the U.S. Pacific daylight time by 60 minutes starting
the second Sunday in March at 2 a.m. and ending
the first Sunday in November at 2 a.m.
Disables the daylight saving time adjustment
feature.
Returns to EXEC mode.
Verifies the time zone configuration. If
summer-time is not part of the running
configuration, then the switch is not configured for
daylight saving time.
Cisco MDS 9000 Family CLI Configuration Guide
NTP Configuration
5-19