Defining The Sntp Client Anycast Address - Patton electronics SmartWare R.3.20 Software Configuration Manual

SmartWare Software Configuration Guide
Mode: Configure
Step
node (cfg)#sntp-client gmt-offset offset
1
Example: Setting SNTP client local time zone offset from GMT
In the following example the SNTP client local time zone offset is set to +2 hours ahead of GMT, e.g. for Swit-
zerland during Summer Time. Be aware that a space follows the + or – sign before the time offset is entered.
node>enable
node#configure
node(cfg)#sntp-client gmt-offset + 02:00:00
There is a short form notation supported as shown in the following example.
node(cfg)#sntp-client gmt-offset + 2
Defining the SNTP client anycast address
Anycast mode is designed for use with a set of cooperating servers whose addresses are not known beforehand.
An anycast client sends a request to the designated local broadcast or multicast group address as described
below. For this purpose, the NTP multicast group address assigned by the IANA is used. One or more anycast
servers listen on the designated local broadcast address or multicast group address. Each anycast server, upon
receiving a request, sends a unicast reply message to the originating client. The client then binds to the first
such message received and continues operation in unicast mode. Subsequent replies from other anycast servers
are ignored.
In anycast mode, the SmartNode sends a request to a designated local broadcast or multicast group address and
expects a reply from one or more anycast servers. The SmartNode uses the first reply received to establish the
particular server for subsequent unicast operations. Later replies from this server (duplicates) or any other
server are ignored.
Other than the selection of address in the request, the operations of anycast and unicast clients are identical.
This procedure describes how to set local broadcast address or multicast group address to which the anycast
request is sent
SNTP client configuration task list
Command
20 • SNTP client configuration
Purpose
Specifies the SNTP client constant offset from GMT,
where offset is + or – followed by hh:mm:ss, with a
range from –24:00:00 to +24:00:00
240