Specifications

4-15
System Management Software Configuration Guide for Cisco IE 2000U and Connected Grid Switches
Chapter 4 Administering the Switch
Configuring Time and Date Manually
The specified interface is used for the source address for all packets sent to all destinations. If a source
address is to be used for a specific association, use the source keyword in the ntp peer or ntp server
global configuration command as described in the “Configuring NTP Associations” section on page 4-8.
EXAMPLE
The following example shows how to configure a switch to use the IPv4 or IPv6 address of Ethernet
interface 0 as the source address of all outgoing NTP packets:
Switch(config)# ntp source ethernet 0
Configuring Time and Date Manually
If no other source of time is available, you can manually configure the time and date after the system is
restarted. The time remains accurate until the next system restart. We recommend that you use manual
configuration only as a last resort. If you have an outside source to which the switch can synchronize,
you do not need to manually set the system clock.
This section includes the following topics:
• Setting the System Clock, page 4-15
• Displaying the Time and Date Configuration, page 4-16
• Configuring the Time Zone, page 4-16
• Configuring Daylight Saving Time (Summer Time), page 4-17
Setting the System Clock
If you have an outside source on the network that provides time services, such as an NTP server, you do
not need to manually set the system clock.
BEFORE YOU BEGIN
Review the “System Clock” section on page 4-2.
DETAILED STEPS
Command Purpose
Step 1
clock set hh:mm:ss day month year
or
clock set hh:mm:ss month day year
Manually set the system clock using one of these formats.
• For hh:mm:ss, specify the time in hours (24-hour format),
minutes, and seconds. The time specified is relative to the
configured time zone.
• For day, specify the day by date in the month.
• For month, specify the month by name.
• For year, specify the year (no abbreviation).