Network and Management Overview
Megabit Modem CRA-C IP Addresses
The Megabit Modem CRA-C has two IP addresses, one for the ADSL WAN port and one for the Ethernet port. In Figure 13, the non-shaded side of the provider and subscriber modems indicates the LAN address for the Ethernet (10BASE-T) connection. The shaded side of the provider and subscriber modems is the IP Line address for the ADSL line connection. Note that the IP Line address is unique from the LAN addresses. When connecting a Megabit Modem CRA-C and a Megabit Modem CRA point-to-point via ADSL, the IP Line addresses are completely isolated and hidden from the rest of the network. As a result, any valid IP address can be assigned to these ports but should be on the same subnet.
When routing, data travels one hop at a time. Figure 13 shows destination and next hop IP addresses. The destination address indicates the network and subnetwork of the next hop for a common network topology . The default gateway is the router to which datagrams are sent that do not have an assigned route in the static routing table.
Use Figure 13 as a worksheet to help you determine/record static IP routing addresses.
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