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Chapter 2: Networking
Illustrations contained in this document are for representation only.
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Fig.11
Example: The Wireless Cable Gateway offers a number of built-in web pages, which you can
use to configure its networking side; when you communicate with the networking side, your
communication is following this path.
Each packet on the Internet addressed to a PC in your home travels from the Internet down-
stream on the cable company’s system to the WAN side of your Wireless Cable Gateway. There it
enters the Cable Modem section, which inspects the packet, and, based on the results, proceeds
to either forward or block the packet from proceeding on to the Networking section. Similarly,
the Networking section then decides whether to forward or block the packet from proceeding on
to your PC. Communication from your home device to an Internet device works similarly, but in
reverse, with the packet traveling upstream on the cable system.
Cable Modem (CM) Section
The cable modem (or CM) section of your gateway uses EURO-DOCSIS Standard cable modem
technology. EURO-DOCSIS specifies that TCP/IP over Ethernet style data communication be used
between the WAN interface of your cable modem and your cable company.
A EURO-DOCSIS modem, when connected to a Cable System equipped to support such modems,
performs a fully automated initialization process that requires no user intervention. Part of this