changing the logon address on CM1100

[BoboGin]

I just replaced my old Zoom with a CM1100. Works great, I am adding a second connection to the system for my home business. While I can curerntly get to the 192.168.100.1 address to manage the first CM1100, how do I change the address so that the second modem will also be addressable. 

[FURRYe38]

The .100.1 is not changable as this is a static address so users can address the CM modems web page only. This doesn't effect connected devices. You can connect, say two routers to the back of the CM modem, power OFF the CM modem and two routers. Power ON the modem and let it sync, then power ON the two routers. If your ISP assigns the one modem two separate WAN IP addresses, then each router connected to the modem will get a different WAN IP address. 

[antinode]

> [...] I am adding a second connection to the system for my home
business. [...]

   What, exactly, does that mean?  Another co-ax cable, or another
external/public IP address, or what?

> [...] how do I change the address so that the second modem will also
> be addressable. [...]

   "second modem"?  See previous question.

   In general, I see no easy way to manage multiple cable modems from
one LAN.  But, with no idea what "second connection" means to you, or
how, exactly, you intend to use it, it's tough to be confident of much.

> [...] You can connect, say two routers to the back of the CM modem,
> [...]

   Depending on the Internet service provided by your (unspecified) ISP,
that may or may not make sense.

[BoboGin]

Thank you for the response, that does become problematic for me. I have a router that load balances between multiple connections. Both of these systems would be on separate WAN ports but part of the same network.  If I could make a suggestion to your product team, this address should be editable. If for no other reason then to let the consumer get status information from the device if more than  one of them are deployed. It may have been a rare case, but with more of us working from home, it may be more regular. I have my home network which I pay for, and now my company wants me to have a separate network to user for VPN access to the company. So they put in a separate service, with a dedicated IP address on the public network. To accomodate that, they also provided me with a basic home router that can connect to both WAN connections, but  since these have the same management IP, I cannot manage them unless I turn one of them off.

[antinode]

> [...] I have a router that load balances between multiple connections.
> [...]

   Not a very detailed description of that device.  Maker?  Model
mumber?  Connected to what?

> [...] provided me with a basic home router that can connect to both
> WAN connections, [...]

   Not a very detailed description of that device.  Maker?  Model
mumber?  I've never seen "a _basic_ home router that can connect to" two
different "WAN connections".

> [...] since these have the same management IP, I cannot manage them
> unless I turn one of them off. [...]

   Once this stuff gets set up, how much management of modems do you
expect to do?

[FURRYe38]

The only thing you can try is to enable LAG, Link aggregation on the modem, then you sould get same IP address and bandwdith across both WAN ports in back. Then you may be able to load balanace to your needs with your downstream HW. 

FYI, CM modems and most home class modems like the CM1100 are not designed for changing of the management IP address. This as been industry wide designed for most home class modems for a long time. The modems UI needs a user interfacing address so users and tech users can access the modems web page for diagnostic and troubleshooting events. Then WAN IP address is transparent and routes to the downstream connected device, i.e. PC or external router or firewall or I would presume in your case a load balancer. 

If the CM series doesn't meet your needs or configuration, then you may need a different ISP modem. Most home class modems and router configuraiton don't call for load balancing configuraitons. Thats mostly seen in a big bussiness or enterprise configurtaion which this modem is not designed for. 

Good Luck. 

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@BoboGin wrote:

Thank you for the response, that does become problematic for me. I have a router that load balances between multiple connections. Both of these systems would be on separate WAN ports but part of the same network.  If I could make a suggestion to your product team, this address should be editable. If for no other reason then to let the consumer get status information from the device if more than  one of them are deployed. It may have been a rare case, but with more of us working from home, it may be more regular. I have my home network which I pay for, and now my company wants me to have a separate network to user for VPN access to the company. So they put in a separate service, with a dedicated IP address on the public network. To accomodate that, they also provided me with a basic home router that can connect to both WAN connections, but  since these have the same management IP, I cannot manage them unless I turn one of them off.

---

[BoboGin]

Thanks for the reply, as an FYI the router I am using is a TP-Link R600VPN. While not technically a residential device, its only $59 on amazon so to me it qualifies as a simple router. It supports up to 5 WAN connections.  As to the question of management after install, all I really need is access to the status page to make sure its connected, so not a lot of active management but diagnostically significant when there is an issue.  My company has decided to use a differnt brand router for the dedicated connection, so the issue may end up being moot unless it also uses the same address for management.  Its also less load balancing and more vpn to the company network, from a known mac address with a fixed IP. 

Thanks 

[FURRYe38]

You'll need to look into TP-Links requirements and configurations for that model router. On the basic info, that does accept 5 WAN connections, thus from a basic standpoint, you would have 5 different modems connected to each WAN port. If you were to have a CM1200 modem, this modem supports 4 different WAN IP addresses that get assigned from the ISP. So each WAN IP address would be different on each of the 4 WAN ports in back. Wowever all the data flow comes over the 1 Coax line in back. And the CM1200 modem only uses the one modem management web page at 192.168.100.1. This is accessible across the 4 different WAN IP addresses from there connected router down stream. 

Make contact with TP-Link and ask them about connecting there product to WAN and ISP modems and how they expect there router to work for your needs. 

Good Luck.