3Com 4200G 24-Port - Ntp Configuration

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Table of Contents
1 NTP Configuration·····································································································································1-1
Introduction to NTP·································································································································1-1
Applications of NTP·························································································································1-1
Implementation Principle of NTP·····································································································1-2
NTP Implementation Modes············································································································1-4
NTP Configuration Task List···················································································································1-6
Configuring NTP Implementation Modes································································································1-6
Configuring NTP Server/Client Mode······························································································1-7
Configuring the NTP Symmetric Peer Mode···················································································1-7
Configuring NTP Broadcast Mode···································································································1-8
Configuring NTP Multicast Mode·····································································································1-9
Configuring Access Control Right·········································································································1-10
Configuration Prerequisites···········································································································1-10
Configuration Procedure················································································································1-10
Configuring NTP Authentication············································································································1-11
1.1.1 Configuration Prerequisites··································································································1-11
Configuration Procedure················································································································1-12
Configuring Optional NTP Parameters ·································································································1-13
Configuring an Interface on the Local Switch to Send NTP Messages ········································1-14
Configuring the Number of Dynamic Sessions Allowed on the Local Switch·······································1-14
Disabling an Interface from Receiving NTP Messages·································································1-15
Displaying NTP Configuration···············································································································1-15
Configuration Examples························································································································1-15
Configuring NTP Server/Client Mode····························································································1-15
Configuring NTP Symmetric Peer Mode ·······················································································1-16
Configuring NTP Broadcast Mode·································································································1-18
Configuring NTP Multicast Mode···································································································1-19
Configuring NTP Server/Client Mode with Authentication·····························································1-21