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ZyAIR B-4000 Hot Spot Gateway
IP Address Assignment Conflicts
B-2
Case C: The Subscriber IP address is the same as the IP address of a
network device
The following figure depicts an example where the subscriber IP address is the same as the IP address of a
network device not attached to the ZyAIR.
Diagram B-3 IP Address Conflicts: Case C
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 D: Two or more subscribers have the same IP address.
By converting all private IP addresses to the WAN IP address, the ZyAIR allows subscribers with different
network configurations to access the Internet. However, there are situations where two or more subscribers
are using the same private IP address. This may happen when a subscriber is configured to use a static (or
fixed) IP address that is the same as the IP address the ZyAIR DHCP server assigns to another subscriber
acting as a DHCP client.
In this case, the subscribers are not able to access the Internet.