Configuration Guide Configuring SNTP
14 Configuring SNTP
14.1 Overview
The Simple Network Time Protocol (SNTP) is a simplified version of Network Time Protocol (NTP), which is used to synchronize the
clocks of computers on the Internet. SNTP is applied in scenarios where it is unnecessary to use all NTP functions.
NTP uses a complex algorithm and has higher requirements for the system whereas SNTP uses a simpler algorithm and provides higher
performance. Generally, SNTP precision can reach about 1s, which meets the basic requirements of most scenarios. Since SNTP packets
are exactly the same as NTP packets, the SNTP client implemented on a device is fully compatible with an NTP server.
Protocols and Standards
RFC 2030: Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI
14.2 Applications
Synchronizing Time with an NTP Server
A device is used as a client to synchronize time with an NTP server.
14.2.1 Synchronizing Time with an NTP Server
Scenario
As shown in Figure 14-1, DEVICE-B uses a local clock as the NTP clock reference source and provides time synchronization for
DEVICE-C.
DEVICE-C is used as an SNTP client to synchronize time with DEVICE-B.
Figure 14-1
Deployment
Specify DEVICE-B as the SNTP server of DEVICE-C.
Enable SNTP for DEVICE-C.
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