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FTOS Configuration Guide for the C-Series - Force10 Networks

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To have <strong>FTOS</strong> include a timestamp with <strong>the</strong> Syslog message, use <strong>the</strong> following command syntax in <strong>the</strong><br />

CONFIGURATION mode:<br />

Command Syntax Command Mode Purpose<br />

service timestamps [log | debug] [datetime<br />

[localtime] [msec] [show-timezone] |<br />

uptime]<br />

To view <strong>the</strong> configuration, use <strong>the</strong> show running-config logging command in <strong>the</strong> EXEC privilege mode.<br />

To disable time stamping on Syslog messages, enter no service timestamps [log | debug].<br />

Network Time Protocol<br />

Network Time Protocol (NTP) is defined in RFC 1305 and synchronizes timekeeping among a set of<br />

distributed time servers and clients. The protocol also coordinates time distribution in a large, diverse<br />

network with a variety of interfaces. In NTP, servers maintain <strong>the</strong> time and NTP clients synchronize with a<br />

time-serving host. NTP clients choose from among several NTP servers to determine which offers <strong>the</strong> best<br />

available source of time and <strong>the</strong> most reliable transmission of in<strong>for</strong>mation.<br />

In a LAN, you can configure NTP to broadcast its messages.<br />

For more in<strong>for</strong>mation on NTP, refer to RFC 1305, Network Time Protocol (Version 3) Specification,<br />

Implementation and Analysis.<br />

<strong>Configuration</strong> Task List <strong>for</strong> NTP<br />

<strong>Force10</strong> <strong>Networks</strong> recommends configuring NTP <strong>for</strong> <strong>the</strong> most accurate time. In <strong>FTOS</strong>, o<strong>the</strong>r time sources<br />

can be configured (<strong>the</strong> hardware clock and <strong>the</strong> software clock) <strong>for</strong> a single device, but NTP clients within a<br />

network redistribute reference time via local routing algorithms and time daemons to ensure that all<br />

network devices have <strong>the</strong> correct time.<br />

By default, NTP is not enabled on <strong>the</strong> system. Configure <strong>the</strong> ntp server command to enable NTP globally.<br />

The following list includes <strong>the</strong> configuration tasks <strong>for</strong> NTP:<br />

• specify an NTP server on page 74 (mandatory)<br />

• configure NTP broadcasts on page 75 (optional)<br />

• configure NTP au<strong>the</strong>ntication on page 75 (optional)<br />

CONFIGURATION Add timestamp to Syslog messages.<br />

Specify <strong>the</strong> following optional parameters:<br />

• datetime: You can add <strong>the</strong> keyword<br />

localtime to include <strong>the</strong> localtime,<br />

msec, and show-timezone. If you do<br />

not add <strong>the</strong> keyword localtime, <strong>the</strong><br />

time is UTC.<br />

• uptime. To view time since last boot.<br />

If nei<strong>the</strong>r parameter is specified, <strong>FTOS</strong><br />

configures uptime.<br />

<strong>FTOS</strong> <strong>Configuration</strong> <strong>Guide</strong>, version 7.7.1.0 73

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