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Chapter 2: Networking
Illustrations contained in this document are for representation only.
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USB-connected PC to make them look Ethernet-style when passed between you and your cable
company. To do this, the gateway must effectively “loan” an Ethernet-style address for use in all
these packets. For this purpose, the gateway uses a MAC address of MAC label + 5 (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:B1:96.
MAC and IP Addresses Summary
This table summarizes all the MAC and IP addresses that may be associated with the TCP/IP
communication stacks and USB handling in your Wireless Cable Gateway. The ones actually used
depend upon your gateway Operating Mode, as explained above. At minimum, your cable
company will need to know the MAC address associated with IP Stack 1, which is the MAC
address shown on the modem label.
Stack Name Purpose - Mode MAC Address IP Address
IP Stack 1
IP Stack 2
CM WAN access - all Modes
local management - CM Mode
per label on CM assigned by cable company during
initialization
IP Stack 3
IP Stack 4
only CM label + 1 fixed at 192.168.100.1
IP Stack 5
---
CableHome remote management -
CH Mode only
end-user remote management,
LAN WAN access - RG Mode only
CM label + 2
CM label + 3
assigned by cable company
assigned by cable company
WAN data access -
CH Mode only
CM label + 4 fixed at 192.168.0.1
local management -
RG, CH Modes only
LAN gateway
CM label + 5
MAC and IP Addresses