Lost on Ip conflict issue?

[GTB]

We do not have enough info so I will make some assumptions

1. You may have a mix of static and dynamic IP addresses on the LAN. This is very workable without conflict IF and ONLY IF the dynamic IP address pool does not include IP addresses (let's assume you are using the 192.168.1.0/24 subnet and you have the dynamic IP address pool set to assign IP addresses from 192.168.1.1 to 192.168.1.254 - this means that all IP addresses in the subnet can be used in the dynamic pool - and any static IP address must be in the same pool - causing conflict. The solution is to limit the pool; let's say you have a max of 20 devices needing IP addresses - set the pool for about 50 addresses and you have more than enough - I suggest something like 192.168.1.200 - 192.168.1.249 and set the lease life to 24 hours max. Now make sure no static IP addresses are in the 192.168.1.200 - 250 range - change them if they are.

2. There is more than one DHCP server on the LAN - and each assigns IP addresses in the same range. I have seen this with people using a second router as a wireless access point and with some devices that also have a DHCP server. Have only one router do this; if you have a second router as a wireless access point, disable its DHCP functionality; assign it a static IP address in the same subnet as primary router uses and make sure it is not in the pool for DHCP. Connect this router to primary router by cable from LAN (not WAN) port of secondary router to LAN port of primary router.