ZyXEL Vantage CNM User Guide - Page 654
Case B: The Device LAN IP address conflicts with the DHCP
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Appendix E IP Address Assignment Conflicts Case B: The Device LAN IP address conflicts with the DHCP client IP address In the following figure, the device is acting as a DHCP server. The device assigns an IP address, which is the same as its LAN port IP address, to a DHCP client attached to the LAN. Figure 366 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 367 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. 654 Vantage CNM User's Guide
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