Accton Technology ES4710BD manual Sntp Configuration

ES4710BD 10 Slots L2/L3/L4 Chassis Switch

Chapter 15 SNTP Configuration

The Network Time Protocol (NTP) is widely used for clock synchronization for global computers connected to the Internet. NTP can assess packet sending/receiving delay in the network, and estimate the computer’s clock deviation independently, so as to achieve high accuracy in network computer clocking. In most positions, NTP can provide accuracy from 1 to 50ms according to the characteristics of the synchronization source and network route.

Simple Network Time Protocol (SNTP) is the simplified version of NTP, removing the complex algorithm of NTP. SNTP is used for hosts who do not require full NTP functions, it is a subset of NTP. It is common practice to synchronize the clocks of several hosts in local area network with other NTP hosts through the Internet, and use those hosts to provide time synchronization service for other clients in LAN. The figure below (Fig 15-1) depicts a NTP/SNTP application network topology, where SNTP mainly works between second level servers and various terminals since such scenarios do not require very high time accuracy, and the accuracy of SNTP (1 to 50 ms) is usually sufficient for those services.

GPS receiver

Level 1 server

Level 2 server

DNS server Campus users router Campus users

Fig 15-1 Working Scenario

ES4710BD implements SNTPv4 and supports SNTP client unicast as described in RFC2030; SNTP client multicast and anycast are not supported, nor is the SNTP server function.

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