ZyXEL Communications G-1000 User Manual
G-1000 User’s Guide
IP Address Assignment Conflicts
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Figure 99 IP Address Conflicts: Case B
To solve this problem, make sure the G-1000 LAN IP address is not in the DHCP IP address
pool.
pool.
Case C: The Subscriber IP address is the same as the IP
address of a network device
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 G-1000.
address of a network device not attached to the G-1000.
Figure 100 IP Address Conflicts: Case C
You must set the G-1000 to use different LAN and WAN IP addresses on different subnets if
you enable DHCP server on the G-1000. 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 G-1000
use a public WAN IP address.
you enable DHCP server on the G-1000. 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 G-1000
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 G-1000 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 G-1000 DHCP server assigns to another subscriber acting as a DHCP client.
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 G-1000 DHCP server assigns to another subscriber acting as a DHCP client.