Patton electronic SmartNode 4110 Series ユーザーズマニュアル

SNTP client configuration task list

SmartWare Software Configuration Guide 

This procedure describes how to select a primary and secondary SNTP time server

Mode: Configure

Example: Selecting SNTP time servers

In the following example an internal SNTP time server (172.16.1.10) is selected as primary and utcnist.colo-
rado.edu (128.138.140.44) as secondary SNTP time server.

node(cfg)#sntp-client server primary 172.16.1.10
node(cfg)#sntp-client server secondary 128.138.140.44

A SNTP client can operate in multicast mode, unicast mode or anycast mode:

•

In unicast mode (point to point), the client sends a request to a designated server at its unicast address and 
expects a reply from which it can determine the time and, optionally, the roundtrip delay and local clock 
offset relative to the server.

•

In anycast mode (multipoint to point), the client sends a request to a designated local broadcast or multicast 
group address and expects a reply from one or more anycast servers.

•

In multicast mode (point to multipoint), the client sends no request and waits for a broadcast from a desig-
nated multicast server.

Unicast mode is the default SNTP client operating mode.

This procedure describes how to configure the SNTP client operating mode

Mode: Configure

When selecting the anycast operating-mode you have to define the IP 
address where the anycast request is sent. Refer to section 

 on page 287 for more details.

Enter the SNTP primary server IP 
address or hostname

Enter the SNTP secondary server IP 
address or hostname

Configures the SNTP client operating mode to uni-
cast, anycast or multicast mode