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Ethernet connection issues CM1150V
Just purchased modem CM1150V, using OSX, Xfinity internet; in the past with other cable modems, I have always used a direct ethernet connection to my Mac through one ethernet port, and then connected...
"Multi-Gig Speed Cable Modem for XFINITY(r) Voice" says the box - verbatim. Got the modem, got Xfinity's fastest plan they would sale. Doesn't actually do more than 1 gig. Wait, what? Yep, it's a multi-gig modem that doesn't support multi-gig. Sad. It might be accurate to say it's a Gig-speed cable modem, 'ready' for future *potential* multi-gig speeds. But not today.
Mutli Gig means having two or more WAN ISP addreses into the modem. Four ports are for separation WAN IP addresses from the ISP or you can LAG. WAN port would be 1 IP address, followed by a different IP address from the ISP set to the other ports.
I do this on my CM1100 with just 2 ports. I have one IP address on WAN port 1 and another IP address from the ISP on the 2nd port. I have two different routers connected to the modem so two different networks. I have 1G support here so just sharing what I believe is the 1 Gb speed on the line. I get 1Gb speeds on both networks.
daviburg wrote:"Multi-Gig Speed Cable Modem for XFINITY(r) Voice" says the box - verbatim. Got the modem, got Xfinity's fastest plan they would sale. Doesn't actually do more than 1 gig. Wait, what? Yep, it's a multi-gig modem that doesn't support multi-gig. Sad. It might be accurate to say it's a Gig-speed cable modem, 'ready' for future *potential* multi-gig speeds. But not today.
Furrye38
For some reason the forum refused to accept my login credentials and made me set up a new name (RTSwiss2). I finally found the time to try connecting a second router to one of the other ethernet ports on the CM1150V. I used port 3, shut down the wireless on the router (so as not to conflict with existing SSIDs) and connected a computer via hard wire to the router, and powered up the router. Computer found the router, and the router found its way to the outside world. I have thoughts on (a) why this worked, and (b) why it is not a "theft of internet services" as someone kept insisting earlier in this thread. Will fill in the details later, but the short answer is that, at least using ports 1 and 3, the CM1150V, like your CM1100, can drive more than a single LAN via separate routers simultaneously.
Best
I have the CM1150V modem and would be much interested in learning the exact steps to get ports 1 and 3 working simultaneously for one router each while having a single gigabit service with the ISP. Please include which ISP it worked with when posting details as the ISP controls the firmware version and update on the modem. Also include which router(s) make and model worked.
If you only have 1 router then you can only use either port#1 if the external router doesn't support LAG.
If the external router supports LAG then you can enable LAG on both CM modem and external router then connect the router to Port 1 and 2 only.LAG routers I know of are NG Orbi AX, R7960P/8000P, There RAX series may also support LAG. Some ASUS routers like there GT-AX1100 does and presume other ASUS model routers.
Now if you had two external routers, no LAG, you can connect 1st router to Port #1 and the 2nd router to Port #2. If you had 3 routers, then you would connect the 3rd router to Port #3. I presume if you had a 4th router, it would connect to Port #4.
daviburg wrote:I have the CM1150V modem and would be much interested in learning the exact steps to get ports 1 and 3 working simultaneously for one router each while having a single gigabit service with the ISP. Please include which ISP it worked with when posting details as the ISP controls the firmware version and update on the modem. Also include which router(s) make and model worked.
Thanks for letting us know. Glad the CM1150V works like the CM1100 and I presume the CM1200 as well. I wonder if port #4 works in the same manor. I presume it does.
You might contact one of the forum moderators about your prior user name account: RTSwiss1
@christian_R
RTSwiss2 wrote:Furrye38
For some reason the forum refused to accept my login credentials and made me set up a new name (RTSwiss2). I finally found the time to try connecting a second router to one of the other ethernet ports on the CM1150V. I used port 3, shut down the wireless on the router (so as not to conflict with existing SSIDs) and connected a computer via hard wire to the router, and powered up the router. Computer found the router, and the router found its way to the outside world. I have thoughts on (a) why this worked, and (b) why it is not a "theft of internet services" as someone kept insisting earlier in this thread. Will fill in the details later, but the short answer is that, at least using ports 1 and 3, the CM1150V, like your CM1100, can drive more than a single LAN via separate routers simultaneously.
Best