CABLE OVERVIEW
Version 1.0, 05/2015. Copyright 2012 Hitron Technologies
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Version 1.0, 05/2015. Copyright 2015 Hitron Technologies
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CDA3-35 User’s Guide
MAC addresses are the most reliable way of identifying network devices, since IP
addresses tend to change over time (whether manually altered, or updated via
DHCP).
Each MAC address displays as six groups of two hexadecimal digits separated by
colons (or, occasionally, dashes) for example 00:AA:FF:1A:B5:74.
NOTE: Each group of two hexadecimal digits is known as an “octet”, since it
represents eight bits.
Bear in mind that a MAC address does not precisely represent a computer on your
network (or elsewhere), it represents a network device, which may be part of a
computer (or other device). In the case of the CDA3-35, each internal module (cable
modem module, Ethernet module, etc.) possesses its own MAC address.
2.6 Configuration Files
The CDA3-35’s configuration (or config) file is a document that the CDA3-35 obtains
automatically over the Internet from the service provider’s server, which specifies the
settings that the CDA3-35 should use. It contains a variety of settings that are not
present in the user-configurable Graphical User Interface (GUI) and can be specified
only by the service provider.
2.7 Downstream and Upstream Transmissions
The terms “downstream” and “upstream” refer to data traffic flows, and indicate the
direction in which the traffic is traveling. “Downstream” refers to traffic from the
service provider to the CDA3-35, and “upstream” refers to traffic from the CDA3-35 to
the service provider.
2.8 Cable Frequencies
Just like radio transmissions, data transmissions over the cable network must exist
on different frequencies in order to avoid interference between signals.
The data traffic band is separate from the TV band, and each data channel is
separate from other data channels.