DHCP and static IP addresses
Posted: Wed Aug 10, 2011 12:49 pm
Just bought a 7800N last week on on the whole very happy with it but have had a few problems with it that I hope someone can help with.
My set up is the 7800N connected to my phone line downstairs in the house. The 7800 is then connected via ethernet to a homeplug. I have another homeplug at the top of the house to which I am connecting by ethernet cable to an iMac. I have updated the firmware to the latest UK version (1.06d).
Everything seemed fine when I set up the 7800 initially but I am finding that every so often the iMac will lose connection via DHCP and when the lease is renewed the imac gets assigned a 169 IP address. Switching from ethernet to wifi on the imac allows me to restablish connection to the internet (so I know that the 7800 has not lost it's connection) and eventually usually after a few hours I will be able to re-establish a DHCP connection via ethernet.
I have seen online that there are some issues with the DHCP lease on the 7800N so tried to establish a static IP address for the imac to avoid this issue using the MAC code of the imac. I set this up with an IP address outside the range of the router e.g. 198.168.1.201 and when I connect the imac all the settings appear correctly but I cannot connect to the internet. Again when I return to wifi the imac gets an IP address from the DHCP and works fine.
Can anyone suggest what I am doing wrong? Do you think I would be better going back to the previous firmware?
My set up is the 7800N connected to my phone line downstairs in the house. The 7800 is then connected via ethernet to a homeplug. I have another homeplug at the top of the house to which I am connecting by ethernet cable to an iMac. I have updated the firmware to the latest UK version (1.06d).
Everything seemed fine when I set up the 7800 initially but I am finding that every so often the iMac will lose connection via DHCP and when the lease is renewed the imac gets assigned a 169 IP address. Switching from ethernet to wifi on the imac allows me to restablish connection to the internet (so I know that the 7800 has not lost it's connection) and eventually usually after a few hours I will be able to re-establish a DHCP connection via ethernet.
I have seen online that there are some issues with the DHCP lease on the 7800N so tried to establish a static IP address for the imac to avoid this issue using the MAC code of the imac. I set this up with an IP address outside the range of the router e.g. 198.168.1.201 and when I connect the imac all the settings appear correctly but I cannot connect to the internet. Again when I return to wifi the imac gets an IP address from the DHCP and works fine.
Can anyone suggest what I am doing wrong? Do you think I would be better going back to the previous firmware?