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Appendix E IP Address Assignment Conflicts
Vantage CNM User’s Guide
388
Figure 234 IP Address Conflicts: Case B
To solve this problem, make sure the device LAN IP address is not in the DHCP IP address
pool.
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 device.
Figure 235 IP Address Conflicts: Case C
You must set the device to use different LAN and WAN IP addresses on different subnets if
you enable DHCP server on the 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 device uses
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 device 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 device DHCP server assigns to another subscriber acting as a DHCP client.
In this case, the subscribers are not able to access the Internet.