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Performance and Fault Management by James M. Thompson, Kent J. Phelps, Robert L. Pavone, Christopher E. Elliott, Paul L. Della Maggiora

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Setting Up NTP

Because most Cisco networks of any size span the globe, it is important to synchronize the times on the devices so that all messages and events are logged based on a common time source, especially if they are managed from a central or regional location.

In order to accomplish this feat, NTP (Network Time Protocol) should be configured on the devices. The Network Time Protocol (NTP) is a protocol designed to time-synchronize a network of machines. NTP runs over UDP and is documented in RFC 1305.

Configuring NTP makes management of your network easier with respect to the consistent timestamps on syslog messages. In conjunction with timestamping the log messages on the router, you can use NTP to synchronize the times for easier event ...

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