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Forum Discussion
New Cable modem and IP router scheme
I have a new Netgear cable modem, CM600 to which I added to my home setup with includes a Netgear R6250 router. Prior to obtaining the CM600 my internal network was in the range of 192.168.100.1 - ....
> [...] you have t[w]o NAT routers - the CM600 and the R6xxx. [...]
Any "CMxxx" model is a Cable Modem (hence "CM"), not a modem+router.
(A "Cxxxx" model would be a modem+router.)
antinode wrote:> [...] you have t[w]o NAT routers - the CM600 and the R6xxx. [...]
Any "CMxxx" model is a Cable Modem (hence "CM"), not a modem+router.
(A "Cxxxx" model would be a modem+router.)
Shame on me, sorry for the partially wrong idea above - indeed antinode is always right (that's why we have not many disputes here!) 8-)
So the only "loss" is that the CM600 can't be monitored "through" the router while being connected to the R6xxx [W]LAN while the R6xxx has the same 192.168.100.1 address.
Blunt theory, you could consider to change the R6xxx LAN IP e.g. from 192.168.100.1 to 192.168.100.254 - you can safely ignore the previous replies as LAN IP can serve as a router address or default gateway (there is only one exception in IP routing when multiple routers are involved with some IGMP multicast where the address matters). Then ensure the DHCP pool is limited to not including .254 (that will happen automatically) but also remove the .1. But I must admit: This would not help as the computers are connected to the 192.168.100.0/24 subnet, and an attempt to connect to 192.168.100.1 won't be routed to the WAN/Internet side of the router.