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8-9

Time Protocols

SNTP: Viewing, Selecting, and Configuring

Figure 8-3. Example of SNTP Configuration When SNTP Is Not the Selected Time Synchronization Method

Configuring (Enabling or Disabling) the SNTP Mode

Enabling the SNTP mode means to configure it for either broadcast or unicast

mode. Remember that to run SNTP as the switch’s time synchronization

protocol, you must also select SNTP as the time synchronization method by

using the CLI

timesync command (or the Menu interface Time Sync Method

parameter).

Syntax: timesync sntp Selects SNTP as the time protocol.

sntp < broadcast | unicast > Enables the SNTP mode (below

and page 8-10).

sntp server < ip-addr> Required only for unicast mode

(page 8-10).

sntp poll-interval < 30. . 720> Enabling the SNTP mode also

enables the SNTP poll interval

(default: 720 seconds; page 8-12).

Enabling SNTP in Broadcast Mode. Because the switch provides an SNTP

polling interval (default: 720 seconds), you need only these two commands

for minimal SNTP broadcast configuration:

Syntax: timesync sntp Selects SNTP as the time synchronization

method.

sntp broadcast Configures

Broadcast as the SNTP mode.

For example, suppose:

■ Time synchronization is in the factory-default configuration (TimeP

is the currently selected time synchronization method).

■ You want to:

1. View the current time synchronization.

2. Select SNTP as the time synchronization mode.

Even though, in this example, TimeP is the

current time synchronous method, the

switch maintains the SNTP configuration.

!Software.book Page 9 Thursday, October 10, 2002 6:10 PM

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