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Chapter 3: Networking
Illustrations contained in this document are for representation only.
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• IP Stack 1 - for use by the cable company to communicate with the cable modem section
only. This stack receives its IP address from the cable company during CM initialization. It
uses the MAC address printed on the label attached to the Wireless Cable gateway.
• IP Stack 2 - for use by you, the end user, to communicate with the cable modem and
Networking sections, to access the internal web page diagnostics and con guration. This
stack uses a fixed IP address: 192.168.100.1. It uses a MAC address of MAC label + 1 (the
MAC label is found on the bottom of the unit). E.g., if the MAC address is
00:90:64:12:B1:91, this MAC address would be 00:90:64:12:B1:92.
With CM Mode, your cable company must provide one IP address for the CM section, plus one
for each PC you connect from their pool of available addresses. Your cable company may have
you or your installer manually enter these assigned addresses into your PC, or use a DHCP
Server to communicate them to your PCs, or use a method that involves you entering host
names into your PCs.
Note that in CM Mode, packets passing to the Internet to/from your PCs do not travel through
any of the IP stacks; instead they are directly bridged between the WAN and LAN sides.