Appendix D Ip Address Assignment Conflicts; Figure 211 Ip Address Conflicts: Case A - ZyXEL Communications G-3000 User Manual

A
P P E N D I X
This appendix describes situations where IP address conflicts may occur. Subscribers with
duplicate IP addresses will not be able to access the Internet.
Case A: The ZyXEL Device is using the same LAN and WAN
IP addresses
The following figure shows an example where the ZyXEL Device is using a WAN IP address
that is the same as the IP address of a computer on the LAN.

Figure 211 IP Address Conflicts: Case A

You must set the ZyXEL Device to use different LAN and WAN IP addresses on different
subnets if you enable DHCP server on the ZyXEL Device. For example, you set the WAN IP
address to 192.59.1.1 and the LAN IP address to 10.59.1.1. Otherwise, It is recommended the
ZyXEL Device use a public WAN IP address.
Case B: The ZyXEL Device LAN IP address conflicts with the
DHCP client IP address
In the following figure, the ZyXEL Device is acting as a DHCP server. The ZyXEL Device
assigns an IP address, which is the same as its LAN port IP address, to a DHCP client attached
to the LAN.
G-3000 Series User's Guide
IP Address Assignment
D
Conflicts
291