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Ethernet Communications
Overview
Once the clock is connected to the network and power is applied, DHCP is used to automatically
assign each clock an IP address on the network. The clock will then search the Internet or local
area network for NTP time servers. NTP (Network Time Protocol) is a uniform method of
sending time over a computer network. By default, the clock will automatically connect to the
local network and attempt to act as a client to public or local SNTP time servers. SNTP is a
subset of the NTP protocol. SNTP provides Universal Coordinated Time (UTC) to the clock.
The clock then implements local time zone offsets and daylight saving rules to display the
correct local time. The correct time will display within a few minutes of obtaining a time server
lock. The clock includes a list of 8 Internet SNTP time servers. Local SNTP time servers may
also be used. The clock includes a network web server which is used to configure various
network communication parameters.
On LED digital clocks with a BRG network interface purchased after April, 2019, press the
Up and Down buttons at the same time to display the Network IP and MAC addresses.
Alternatively, using either the buttons on the clock or the remote control, press and hold mode
button. The display will blink for a few seconds and then begin counting up. When the count
reaches 9, release the button. The IP and MAC addresses will display. Enter the IP address into
a web browser to access the Ethernet web configuration interface.
Ethernet Interface
The Ethernet interface includes an easy to use web interface. Automatic address configuration
(DHCP) is enabled by default. However, if a fixed network address will be used instead of
DHCP, then the interface configuration will need to be changed.
Network Interface Configuration Web Interface
The main page displays a variety of general information about the configuration and activity of
the Ethernet interface.