Cisco 2950 Software Configuration Guide - Page 164

Managing the System Time and Date Chapter 8 Administering the Switch 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. Beginning in privileged EXEC mode, follow these steps to set the system clock: Step 1 Command clock set hh:mm:ss day month year or clock set hh:mm:ss month day year Step 2 show running-config Step 3 copy running-config startup-config Purpose 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). Verify your entries. (Optional) Save your entries in the configuration file. This example shows how to manually set the system clock to 1:32 p.m. on July 23, 2001: Switch# clock set 13:32:00 23 July 2001 Displaying the Time and Date Configuration To display the time and date configuration, use the show clock [detail] privileged EXEC command. The system clock keeps an authoritative flag that shows whether the time is authoritative (believed to be accurate). If the system clock has been set by a timing source such as NTP, the flag is set. If the time is not authoritative, it is used only for display purposes. Until the clock is authoritative and the authoritative flag is set, the flag prevents peers from synchronizing to the clock when the peers' time is invalid. The symbol that precedes the show clock display has this meaning: • *-Time is not authoritative. • (blank)-Time is authoritative. • .-Time is authoritative, but NTP is not synchronized. 8-12 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10