User`s guide

Appendix D IP Addresses and Subnetting
User’s Guide
276
Conflicting Router IP Addresses Example
Since a router connects different networks, it must have interfaces using different network
numbers. For example, if a router is set between a LAN and the Internet (WAN), the router’s
LAN and WAN addresses must be on different subnets. In the following example, the LAN
and WAN are on the same subnet. The LAN computers cannot access the Internet because the
router cannot route between networks.
Figure 173 Conflicting Computer IP Addresses Example
Conflicting Computer and Router IP Addresses Example
More than one device can not use the same IP address. In the following example, the computer
and the router’s LAN port both use 192.168.100.1 as the IP address. The computer cannot
access the Internet. This problem can be solved by assigning a different IP address to the
computer or the router’s LAN port.
Figure 174 Conflicting Computer and Router IP Addresses Example