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7 Viewing System IP Addresses and IP
Performance Statistics
The interfaces on the Ethernet Modem Router that communicate
with other network and Internet devices are identified by unique
Internet protocol (IP) addresses. You can use the Web
Configuration to view the list of IP addresses that your device uses,
and to view other system and network performance data.
See Appendix
A for a description of IP addresses and masks.
Viewing the Ethernet Modem Router ’s IP Addresses
To view the Ethernet Modem Router ’s IP addresses, click the
Routing tab, and then click
IP Addr in the task bar. The IP Address
Table page displays:
Figure 32. IP Address Table Page
The table lists the IP addresses, network masks (“Net Mask”), and
interface names (“IF Name”) for each of its IP-enabled interfaces.
The listed IP addresses may include:
f The IP address of the device’s LAN (Ethernet) port, called
eth-0. See Chapter
4 for instructions on configuring this
address.
f The IP address of the device’s USB interface, named usb-
0. See Chapter
4 for instructions on configuring this
address.
f The IP address of the WAN (ADSL line) interface, which
your ISP and other external devices use to identify your
network. It may be identified in the Web Configuration by
the names ppp-0, eoa-0, or ipoa-0, depending on the
protocol your device uses to communicate with your ISP.
Your ISP may assign the same address each time, or it
may change each time you reconnect.
f The “loopback” IP address, named lo-0, of 127.0.0.1. This
special address enables the device to keep any data
addressed directly to it, rather than route the data through
the default interfaces.
