OnTime Clock
Installation and User Guide
Firmware Version 1
All claims based on information publicly available at time of printing. All other product or service names mentioned
in this document may be trademarks of the companies with which they are associated.
© 2015 Novanex, Inc. | All rights reserved | page 41
Appendix C: Clock Management System Support
Clock Management Systems.
A clock management system collects status from clocks
and provides options for managing a collection of clocks. The mgmt commands
(Section 6) and associated DHCP options (see Appendix A: Clock Configuration)
specify how to configure clocks to communicate with a management system.
Clock Network Information Packet.
In order to assist management systems in the task
of locating clocks on a network, the clock configures a Clock Network Information
string comprised of the MAC Address and the IP Address of the clock in this form:
•
eth=00:60:35:09:7b:ca; ipv4=192.168.1.5;
This Clock Network Information Packet is transmitted at power up and whenever the
IP Address of the clock is changed, regardless of whether DHCP or Static IP Addressing
is used. The transmission is a subnet broadcast that is sent to port 1601.
Management System Identification.
To further improve the capability of a
management system to locate clocks on the network, the DHCP option configuration
includes a 'mgmtaddr' option. This can be used to specify a hostname or ip address and
an optional port number. If specified, the Clock Network Information Packet will be
also be transmitted to the specified address via unicast, in addition to the broadcasts
described above.
Supported formats for the ‘mgmtaddr’ option include:
•
mgmtaddr=192.168.1.1;
•
mgmtaddr=host.network;
•
mgmtaddr=testserver:1700;
OnTime Management System Packet.
When the clock is configured for OnTime
Management support, the clock will send to the configured cloudserver address a status
packet listing the clock's ethernet (MAC) address, fully qualified hostname, IP address,
clock model, firmware version, clock registration token, and the current NTP
synchronization status.
