Ignite modem & TV with DMZ for existing router

[something1965]

I am converting from Digital TV to Ignite TV.

Instead of changing modem to Bridged Mode, I would like to know your thoughts on this possible simple setup.

I have a lot going on with my setup and do not want to change it.

I have approx. 35 devices that does not include TV's.

Requirement:

Have TV set-top boxes run off the Rogers modem.

Have all other devices continue to run off my existing router including it's wireless access point.

Plan:

Plug my router into an available LAN port on the modem

On the Rogers modem interface, assign DMZ mode to the IP/connection for my existing router.

Would could go wrong? seems to me it's the best of both worlds.

Thanks

**Labels Added**

[Biollw]

Keep it simple: Bridge the rogers modem and run all with your router. TV boxes will work is that's what you are worried about.

[Datalink]

@something1965 the fly in the ointment here is the number of IP addresses which can be assigned to the modem.  @-G- is the local expert here although I would expect the moderators to be able to answer this one as well.  Historically, Rogers has allowed two IP address to be assigned to a modem in Bridge mode.  So, two IP addresses per modem is allowed.  Now, with the XBx modems and set top boxes, one IP address is assigned to the modem and one IP address may be assigned to the set top boxes.  So, what happens as you indicate, that someone sets up a DMZ to run a router.  Will that router actually receive an IP address and access to the internet?  Dont't know.  You have an interesting idea in mind, but I don't know if it will actually work.  I suspect that even with your current modem, set to run with a DMZ, router would still receive a local IP address, even though its in a DMZ?  Don't know for sure.  @-G- will see this and hopefully offer some wise words of wisdom on this one.  @CommunityHelps, any comments on this?

@Biollw has the best idea.  Bridge the modem and let the router do the work.  You will need to run IPV6 on the router to support the set top boxes. 

I don't have Ignite TV, but I've run the XB7 in Bridge mode since the day that it arrived, without any issues other than not being able to access the modem thru the router.  With the Hitron Coda 4582, that was never a problem  

[-G-]

@something1965  I have not tested this myself but I believe that others have been running in this configuration for years without any issues.

As @Datalink mentioned, each customer is allowed to obtain two public IP addresses. The Ignite Gateway will get assigned one for its WAN interface; when you enable the DMZ on the Ignite Gateway, it will get assigned the other for its Internet connectivity.

The downside with this config is that your router (and the devices behind it) will not have any IPv6 connectivity but that would be a non-issue for most people.

[something1965]

Thanks for the replies.

Install was yesterday and went well.

-My router (programming unchanged) plugged into LAN port 2 of the Ignite modem
-Added the boxes to connect to the Modem instead of my existing AP
-The boxes connected ok, but one box (S/E 2nd floor) was a weak signal so I had to relocate the modem from the N/W of the basement  to the middle of the basement to satisfy all of the second floor.

No "Bridge Mode" or "DMZ" required.

As for playing around and learning the new way....pleased!

Thanks again!

Cheers