H3C S7500E Series Operation Manual page 1085

Operation Manual - NTP
H3C S7500E Series Ethernet Switches
Chapter 1 NTP Configuration ....................................................................................................... 1-1
1.1 NTP Overview.................................................................................................................... 1-1
1.1.1 Applications of NTP................................................................................................. 1-1
1.1.2 How NTP Works...................................................................................................... 1-2
1.1.3 NTP Message Format ............................................................................................. 1-3
1.1.4 Operation Modes of NTP ........................................................................................ 1-5
1.1.5 Multiple Instances of NTP ....................................................................................... 1-7
1.2 Configuring the Operation Modes of NTP ......................................................................... 1-8
1.2.1 Configuring NTP Server/Client Mode...................................................................... 1-9
1.2.2 Configuring the NTP Symmetric Mode ................................................................. 1-10
1.2.3 Configuring NTP Broadcast Mode ........................................................................ 1-11
1.2.4 Configuring NTP Multicast Mode .......................................................................... 1-12
1.3 Configuring the Local Clock as a Reference Source....................................................... 1-13
1.4 Configuring Optional Parameters of NTP ........................................................................ 1-14
1.4.1 Configuring the Interface to Send NTP Messages................................................ 1-14
1.4.2 Disabling an Interface from Receiving NTP Messages......................................... 1-14
1.4.3 Configuring the Maximum Number of Dynamic Sessions Allowed....................... 1-14
1.5 Configuring Access-Control Rights.................................................................................. 1-15
1.5.1 Configuration Prerequisites................................................................................... 1-15
1.5.2 Configuration Procedure ....................................................................................... 1-15
1.6 Configuring NTP Authentication ...................................................................................... 1-16
1.6.1 Configuration Prerequisites................................................................................... 1-16
1.6.2 Configuration Procedure ....................................................................................... 1-17
1.7 Displaying and Maintaining NTP...................................................................................... 1-18
1.8 NTP Configuration Examples .......................................................................................... 1-19
1.8.1 Configuring NTP Server/Client Mode.................................................................... 1-19
1.8.2 Configuring the NTP Symmetric Mode ................................................................. 1-20
1.8.3 Configuring NTP Broadcast Mode ........................................................................ 1-22
1.8.4 Configuring NTP Multicast Mode .......................................................................... 1-24
1.8.5 Configuring NTP Server/Client Mode with Authentication .................................... 1-27
1.8.6 Configuring NTP Broadcast Mode with Authentication ......................................... 1-29
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