ZyXEL G-1000 v2 User’s Guide
AP P E N D I X DIP Address Assignment Conflicts
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 G-1000 v2 is using the same LAN and WAN IP addresses
The following figure shows an example where the G-1000 v2 is using a WAN IP address that is the same as the IP address of a computer on the LAN.
Figure 92 IP Address Conflicts: CaseA
You must set the G-1000 v2 to use different LAN and WAN IP addresses on different subnets if you enable DHCP server on the G-1000 v2. For example, you set the WAN IP address to
192.59.1.1and the LAN IP address to 10.59.1.1. Otherwise, It is recommended the G-1000 v2 use a public WAN IP address.
Case B: The G-1000 v2 LAN IP address conflicts with the DHCP client IP address
In the following figure, the G-1000 v2 is acting as a DHCP server. The G-1000 v2 assigns an IP address, which is the same as its LAN port IP address, to a DHCP client attached to the LAN.
Figure 93 IP Address Conflicts: Case B