A small company I administer has always had a 10.0.0.100-10.0.0.200 range with 255.0.0.0 subnet. All ip's are fixed and the management says it need to stay so.
They recently changed ISP and got a ADSL modem with has a fixed LAN address of 192.168.2.1 / 255.255.255.0....
So I bought a Cisco RVS4000 router which I thought could solve the problem.
On the router I can setup the WAN port of this router to 192.268.2.1/24. That's ok.
And on the LAN side I can change the IP-range to 10.0.0.100. That's ok too
But the subnets on the LAN side are fixed to a couple of choises from a dropdown box.
I need the 255.0.0.0 subnet, but that's not there ?!
There's only 255.255.255.0 or 255.255.255.128 or 255.255.255.192 or 255.255.255.224 or 255.255.255.240 or 255.255.255.258 and 255.255.255.252 in the dropdown list.
Is there anything I could do to get the 10.0.0.1xx range to work with this router ?