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Forum Discussion
CM1200 not working with wireless routers
I went from cox's 150 internet service to their gigablast service yesterday. I knew I was going to need a new modem as my old one wasn't 3.1. I purchased the Netgear CM1200 and got it setup. My compu...
". Even though the CM1200 has 4 ports, your isp only supplies a single ip address"
I did as you suggested, and it's working now. There's now a new issue. My connected speed dropped by 2/3. I was getting 900 megs testing out to fast.com when my computer was plugged into the CM1200, now that it's going through the AC3500,i'm getting 300. Is there something else I need to look at?
Correct me if I'm wrong (my network know-how is limited here)
1) ISP assigns IP address to you
2) I THOUGHT it was assigned to the cable modem since you have to give the ISP (Cox) the serial number, model #, etc.. off the modem.
3) CM1200 has 4 ports on the back, i THOUGHT the modem assigned an interanl IP to those ports so you can have 4 devices directly connected to your CM1200 without them "grabbing" the ISP assigned IP adddress.
4) What good are the extra 3 ports if I can't plug my computer into them?
5) My CURRENT set up is CM1200 with only 1 thing plugged into it (the AC3500) and then everything plugged into it.
6) I'm also using a smaller DGS 105 switch (it's a unmanaged, 5 port Gigabit switch from linksys) for a few smaller things since my AC3500 doesn't have enough ports in the back (it's using one of the ports on the AC3500 and a few items are plugged into the DGS 105.
7) computer is plugged into the AC3500, not the DSG 105 (just want to be clear)
> 1) ISP assigns IP address to you
Define "you". _You_, personally, do not get an IP address.
> 2) I THOUGHT it was assigned to the cable modem since you have to give
> the ISP (Cox) the serial number, model #, etc.. off the modem.
No. The ISP-assigned IP address goes to the device which is
connected to the modem, not to the modem itself.
> 3) CM1200 has 4 ports on the back, i THOUGHT the modem assigned an
> interanl IP to those ports [...]
No. A modem can't assign any IP address to anything. That's what a
router does.
> 4) What good are the extra 3 ports if I can't plug my computer into
> them?
To you, probably none. Your ISP could, in principle, use them to
give you multiple external/public IP addresses, or for aggregation to
give you higher speed.
> 5) My CURRENT set up is CM1200 with only 1 thing plugged into it (the
> AC3500) and then everything plugged into it.
Ok.
> 6) I'm also using a smaller DGS 105 switch for a few smaller things
> since my AC3500 doesn't have enough ports in the back (it's using one of
> the ports on the AC3500 [...]
Ok.
For a good time, visit http://netgear.com/support , put in your model
number, and look for Documentation. Get the User Manual. Read.
I know this thread is old, but I couldn't help but comment. Antinode, I am sorry man, but your responses to the OP were so condescending! Compare what you wrote to what plemans wrote and you will see exactly what I mean... Especially your response to tanviper’s first statement about the assignment of an IP address.