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Forum Discussion
CM2200 on 192.168.100.1
I just bought a CM1100 and am extremely annoyed to find that its IP address is fixed at 192.168.100.1. The network I am installing it on uses the 192.168.2.xxx subnet, which means that the cable mod...
"192.168.100.1 is a fixed address for a reason and can not be changed. Its the address of the modems web page for user access."
In all hardware I have set up except this box, my experience is that the port 80 access address is easy to change. For example, I have set my DSL box (that I am now changing out) to use 192.168.2.251. I just set the LinkSys WAP/router that is replacing it to also use 192.168.2.251, replacing the 192.168.1.1 default. My two NAS boxes use 192.168.2.223 and 224, hard addresses that I have set. IIRC they defaulted to DHCP.
> In all hardware I have set up except this box, my experience is that
> the port 80 access address is easy to change. [...]
Welcome to the world of the DOCSIS cable modem.
> [...] My two NAS boxes use 192.168.2.223 and 224, hard addresses that
> I have set. IIRC they defaulted to DHCP.
Almost everything these days defaults to using DHCP. When you say
"hard address", do you mean a static address (configured on the device
itself), and not a reserved dynamic address (configured on the (DHCP
server on the) router)? If you're using static addresses, then my
advice would be to shrink the DHCP pool, so that the router is never
tempted to grant any of your static addresses to some DHCP client
device.
You could, for example, change the DHCP pool from its (likely)
default range of ".2" - ".254" to, say, ".2" - ".199". You could then
safely use ".200" - "254" in any way you want, without fear of the DHCP
server causing a conflict.
Around here, almost all my devices have static or reserved addresses,
all outside the DHCP pool. (Static for the antique computers which
don't handle DHCP well, if at all; reserved for almost everything else.
My DHCP pool is only 16 wide. A Roku box uses it.)
I know all that and have done all that. Many times, on many network configurations. Did not ask for any advice, actually.
> I know all that and have done all that. [...]
Sorry to have bothered you. With my weak psychic powers, and your
non-standard terminology, distinguishing what you know from what you
don't know is beyond my limited capabilities.