Manual

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Москва, Новозаводская ул., 18, стр. 1
342
Chapter 40 NTP Function Configuration
40.1 Introduction to NTP Function
The NTP (Network Time Protocol) synchronizes timekeeping spans WAN and LAN among
distributed time servers and clients, it can get millisecond precision. The introduction of event,
state, transmit function and action are defined in RFC-1305.
The purpose of using NTP is to keep consistent timekeeping among all clock-dependent
devices within the network so that the devices can provide diverse applications based on the
consistent time.
For a local system running NTP, its time can be synchronized by other reference sources and
can be used as a reference source to synchronize other clocks, also can synchronize each
other by transmit NTP packets.
40.2 NTP Function Configuration Task List
1. To enable NTP function
2. To configure NTP server function
3. To configure the max number of broadcast or multicast servers supported by the NTP client
4. To configure time zone
5. To configure NTP access control list
6. To configure NTP authentication
7. To specified some interface as NTP broadcast/multicast client interface
8. To configure some interface can’t receive NTP packets
9. Display information
10. Debug
1. To enable NTP function
Command
Explication
Global Mode
ntp enable
ntp disable
To enable or disable NTP function.
2. To configure NTP server function
Command
Explication
Global Mode
ntp server {<ip-address> | <ipv6-
address>} [version <version_no>] [key
To enable the specified time server of time
source.