Forum Discussion
Gateway IP address conflicts
Tmobile Gateway router HHCP seems to be assigning unique IP addresses on network devices but getting network warning of IP address conflicts every few minutes?
You can open a console/terminal and ping the network broadcast address 192.168.12.255 and then check the client's ARP table (command arp -a). That should provide some idea of clients that are up and are responding. If you have set any static IP addresses on the network in the 101-254 range then remove the IP for any client with a static IP in that range and use an IP from 2-100. I am pretty sure the DHCP scope runs from 101-254. I never seen an IP assignment below 101 from DHCP. I can assign and I do assign static IPs below 100 so I am pretty sure it is safe to say it is ok and will not duplicate any IP addresses. You can easily test by pinging an IP address you want to set from a client that is connected with a valid IP address. If there is no response then the IP is probably free, assuming it is NOT part of the DHCP scope.
You can open a console/terminal and ping the network broadcast address 192.168.12.255 and then check the client's ARP table (command arp -a). That should provide some idea of clients that are up and are responding. If you have set any static IP addresses on the network in the 101-254 range then remove the IP for any client with a static IP in that range and use an IP from 2-100. I am pretty sure the DHCP scope runs from 101-254. I never seen an IP assignment below 101 from DHCP. I can assign and I do assign static IPs below 100 so I am pretty sure it is safe to say it is ok and will not duplicate any IP addresses. You can easily test by pinging an IP address you want to set from a client that is connected with a valid IP address. If there is no response then the IP is probably free, assuming it is NOT part of the DHCP scope.
