Orbi WiFi 7 RBE973
Reply

CM2200 on 192.168.100.1

OldPilot2
Aspirant

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 modem is not easily accessible for checking and management.

 

I am not interested in having the cable modem tail wag my network dog.  I am not going to reconfigure my network to 1.92.168.100.xxx !

 

I have never had a problem like this before.  I normally set suitable hard addresses to boxes as needed.

 

Is there a workaround for this stupidity?  I have never seen it done but it seems like there could be a simple address translation box inserted between the network and the CM1100, making the modem happy and my network access easy.

 

Grrr ...   Any ideas folks?  This cannot be a new problem but Search was not helpful for me.

Model: CM1100|Nighthawk Multi-Gig Speed Cable Modem—DOCSIS 3.1
Message 1 of 12
antinode
Guru

Re: CM2200 on 192.168.100.1

> I just bought a CM1100 [...]

 

   Why?  And connected it to what?

 

> [...] and am extremely annoyed to find that its IP address is fixed at
> 192.168.100.1. [...]

 

   You seem to be very easily annoyed.  Is the CM1100 a replacement for
some other modem?  (What was it?)

 

> [...] The network I am installing it on uses the 192.168.2.xxx subnet,
> [...]

 

   Ok.  For future reference, what are you using as a router?

 

> [...] which means that the cable modem is not easily accessible for
> checking and management.

 

   It does?  Did you actually try it, or are you basing your complaint
on how you expect this stuff to work?

 

> [...] I am not going to reconfigure my network to 1.92.168.100.xxx !


   I would advise against doing that.  Did anyone advise you to do that,
or was it your own idea?

 

> Is there a workaround for this stupidity? [...]

 

   Which/whose?

 

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual (at least).  Read.

 

   Don't go looking for trouble where there is none?

 

> [...] This cannot be a new problem [...]

 

   Especially if it's not actually a problem.

 

   If you are replacing an old modem+router of some kind with a CM1100,
which is only a modem, then you can expect to have problems until you
get a router to go with it.

 

   General advice: You might have more success if you described the
actual problem which you are trying to solve, rather than asking how to
implement some particular "solution" (or refusal to do something), which
may have little or nothing to do with the actual problem (whatever it
might be).

Message 2 of 12
OldPilot2
Aspirant

Re: CM2200 on 192.168.100.1

I am replacing a DSL modem/WAP/router with the CM2200 and a Linksys WAP/router. Today or tomorrow.  I am using 192.168.2.xx.  I am used to setting up my networks so I have access to my system boxes without a lot of fooling around.  For example, the DSL box is at 192.168.2.251.  I have that IP bookmarked and it is a simple matter of clicking the bookmark to get access to the box.  I also have bookmarks for the port 80 interfaces to my NAS boxes.  I want to have the same capability with the CM2200.  Quite simple, actually.

 

I actually do know a little bit about this.  I have been taking care of my home and business networks as a survival skill since Netware 2.x.  I have even (gasp!) downloaded the manuals for the new boxes.  Hassling with networks does not bring me joy; I do enough to get by and then I stop.

Message 3 of 12
antinode
Guru

Re: CM2200 on 192.168.100.1

> [...] I want to have the same capability with the CM2200. Quite
> simple, actually.

 

   Yes, it is.  Make a new bookmark for "192.168.100.1".  When you use
that (special) address in your web browser, your (unspecified) "a
Linksys WAP/router" will see that address, notice that it's not on its
own LAN, and send it off toward your ISP.  That is, to the CM1100, which
will intercept it, and respond appropriately.  There's no need to do
anything different/special on your ("192.168.2.*") LAN to make that

work.

 

> [...] I have even (gasp!) downloaded the manuals for the new boxes.
> [...]

 

   Did you see anything in any of them which suggested (let alone
demanded) that you "reconfigure [your] network to 1.92.168.100.xxx !"?

 

> [...] I do enough to get by and then I stop.

 

   That's fine, if you know where "enough" ends.


>    Don't go looking for trouble where there is none?

 

   Still my advice.

Message 4 of 12
OldPilot2
Aspirant

Re: CM2200 on 192.168.100.1

"Make a new bookmark for "192.168.100.1". When you use
that (special) address in your web browser, your (unspecified) "a
Linksys WAP/router" will see that address, notice that it's not on its
own LAN, and send it off toward your ISP. That is, to the CM1100, which
will intercept it, and respond appropriately. There's no need to do
anything different/special on your ("192.168.2.*") LAN to make that

work."

 

Thanks.  That's exactly what I was looking for.  It would have been nice to get it without the snotty attitude, but I'll take it either way.  Since that is an unroutable IP I'm surprised the tip works.  I would have expected the Linksys to refuse to forward it, but apparently not -- assuming you have actually made/seen this work.

Message 5 of 12
antinode
Guru

Re: CM2200 on 192.168.100.1

> [...] I would have expected [...]

 

   Exactly.  Hence:

 

>    It does?  Did you actually try it, or are you basing your complaint
> on how you expect this stuff to work?  What, exactly, did you do?


   In the words of the philosopher Williams, "If you don't think too
good, don't think too much."

 

> [...] the Linksys to refuse to forward it, but apparently not -

 

   I'd expect that your ISP would "refuse to forward it", if that's any
consolation.

 

> [...] assuming you have actually made/seen this work.

 

   Everyone who owns a cable modem has (or could have) seen this work.

 

> [...] It would have been nice to get it without the snotty attitude,
> but I'll take it either way. [...]


   Fix your own attitude, and that of others may follow, with no extra
effort on anyone's part.  Screaming about all "this stupidity" which
you're being forced to endure, rather than _asking_ about how the simple
procedures in the various User Manuals could possibly work, for example,
might have been a better start.  Just a thought.

 

   Deciding whether the original problem involved "stupidity" someplace,
or just a smattering of ignorance (which is normally a simpler obstacle
to overcome), is left as an exercise for the reader.

Message 6 of 12
FURRYe38
Guru

Re: CM2200 on 192.168.100.1

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. The CM modem does NOT have a built in router. Its MODEM ONLY! You need to connect a wireless router to LAN port #1 if you want to connect more than just 1 devices to have internet access. 

 

Be sure you contact your ISP to ensure the CM modem is fully supported and serviced by your ISP. 

 


@OldPilot2 wrote:

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 modem is not easily accessible for checking and management.

 

I am not interested in having the cable modem tail wag my network dog.  I am not going to reconfigure my network to 1.92.168.100.xxx !

 

I have never had a problem like this before.  I normally set suitable hard addresses to boxes as needed.

 

Is there a workaround for this stupidity?  I have never seen it done but it seems like there could be a simple address translation box inserted between the network and the CM1100, making the modem happy and my network access easy.

 

Grrr ...   Any ideas folks?  This cannot be a new problem but Search was not helpful for me.


 

 

Message 7 of 12
OldPilot2
Aspirant

CM2200 on 192.168.100.1

"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.

Message 8 of 12
antinode
Guru

Re: CM2200 on 192.168.100.1

> 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.)

Message 9 of 12
OldPilot2
Aspirant

Re: CM2200 on 192.168.100.1

I know all that and have done all that.  Many times, on many network configurations.  Did not ask for any advice, actually.

Message 10 of 12
antinode
Guru

Re: CM2200 on 192.168.100.1

> 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.

Message 11 of 12
FURRYe38
Guru

Re: CM2200 on 192.168.100.1

Again, for ALL cable modems, (DOCSIS) the 192.168.100.1 is a hard coded default IP address of the modem web management page only. This is not user configurable nor changeable. Do not confuse cable modems with DSL or other non cable modems. You can access the cable modems web page directly or thru a connected router as well using this IP address. The modem is just a modem thus passing thru any and all WAN side traffic from the ISP to a connected wired PC or a DHCP router of your choice where you can set any IP address configuration you want on this router there. Conigure your router of your choice for what you need and desire AT the router, theres nothing to configure on the CM modem. 

 

Good Luck. 


@OldPilot2 wrote:

"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.


 

Message 12 of 12
Top Contributors
Discussion stats
  • 11 replies
  • 2134 views
  • 0 kudos
  • 3 in conversation
Announcements

Orbi 770 Series