Name: Cisco 500 Series
Brand: Cisco
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Cisco 500 Series Stackable Managed Switch Administration Guide 122

Administration: Time Settings

Synchronized system clocks provide a frame of reference between all devices on

the network. Network time synchronization is critical because every aspect of

managing, securing, planning, and debugging a network involves determining

when events occur. Without synchronized clocks, accurately correlating log files

between devices when tracking security breaches or network usage is

impossible.

Synchronized time also reduces confusion in shared file systems, as it is important

for the modification times to be consistent, regardless of the machine on which the

file systems reside.

For these reasons, it is important that the time configured on all of the devices on

the network is accurate.

NOTE The device supports Simple Network Time Protocol (SNTP) and when enabled, the

device dynamically synchronizes the device time with time from an SNTP server.

The device operates only as an SNTP client, and cannot provide time services to

other devices.

This section describes the options for configuring the system time, time zone, and

Daylight Savings Time (DST). It covers the following topics:

• System Time Options

• SNTP Modes

• Configuring System Time

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