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ZyAIR B-4000 Hot Spot Gateway
IP Address Assignment Conflicts B-1
Appendix B
IP 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 ZyAIR is using the same LAN and WAN IP addresses
The following figure shows an example where the ZyAIR is using a WAN IP address that is the same as
the IP address of a computer on the LAN.
Diagram B-1 IP Address Conflicts: Case A
You must set the ZyAIR to use different LAN and WAN IP addresses on different subnets if you enable
DHCP server on the ZyAIR. 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 ZyAIR use a public WAN IP address.
Case B: The ZyAIR LAN IP address conflicts with the DHCP client IP
address
In the following figure, the ZyAIR is acting as a DHCP server. The ZyAIR assigns an IP address, which is
the same as its LAN port IP address, to a DHCP client attached to the LAN.
Diagram B-2 IP Address Conflicts: Case B
To solve this problem, make sure the ZyAIR LAN IP address is not in the DHCP IP address pool.