User guide

OmniSwitch AOS Release 8 Switch Management Guide May 2014 page 11-1
11 Configuring Network
Time Protocol (NTP)
Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another
server or reference time source, such as a radio or satellite receiver. It provides client time accuracies
within a millisecond on LANs, and up to a few tens of milliseconds on WANs relative to a primary server
synchronized to Universal Coordinated Time (UTC) (via a Global Positioning Service receiver, for exam-
ple).
In This Chapter
This chapter describes the basic components of the OmniSwitch implementation of Network Time Proto-
col and how to configure it through Command Line Interface (CLI). CLI commands are used in the
configuration examples; for more details about the syntax of commands, see the OmniSwitch AOS Release
8 CLI Reference Guide.
Configuration procedures described in this chapter include:
• Enabling the NTP client and selecting the NTP mode. See “Configuring the OmniSwitch as a Client”
on page 11-9.
• Selecting an NTP server for the NTP client and modifying settings for communicating with the server.
See “NTP Servers” on page 11-10.
• Enabling authentication in NTP negotiations. See “Using Authentication” on page 11-12.