You are performing what is called "double NAT". You essentially have two separate networks, and the NAT mechanism on your netgear might cause a lot of network devices on the comcast router to not work properly with any device on the netgear router.
Thanks for your assistance. I did that (connect Netgear to Comcast between two switch ports) , and PC01 while still connected to the Comcast router was assigned an IP based on the Netgear router's subet. I was able to access to both routers' control panel.
Unfortunately I had limited internet connectivity. I couldn't access anandtech forums. And eventually I couldn't access the Comcast router at all, so I had to hard reset it.
Also when I tried to set the IP address on the Netgear router to 10.0.0.254 (as this was statically assigned to it on the Comcast router), I got the message "the following address conflicts with an existing subnet".
So now, I'm back to connecting the netgear to the comcast router through its internet/WAN port. I'll try to post some screenshots later, or start a new thread altogether. Also the netgear router has a gateway of 10.1.1.254, now, and PC_02's wifi is able to function.
Edit 01:
Also If set the static/reserved address on the comast router for the netgear router, I don't have to change or re-specify DHCP assigning range correct?
I'll also give comcast a call to get the confirmation.
Edit 02: I contacted a comcast wireless rep and he stated the Netgear router should be connected by internet port of the
Netgear Router (NR), to one of the ethernet switch ports of the Comcast router. This seems to make more sense, since regular switch ports aren't meant to interpret IP network packets, for access to WANs.
Since a device can access a WAN it should be able to communicate with a LAN. A device that can communicate by LAN cannot access a WAN by a router.
The comcast rep, was able to direct me how to establish the router with a static IP, and the
Comcast Router (CR), was able to load the connected devices page, unlike before, which is good news.
The NR router's IP is 10.0.0.254. It's gateway is 10.1.1.254, while PC_02's IP is 10.1.1.4.
PC 02 was able to ping a computer on a different subnetwork, i.e.: PC 01, connect to CR's gateway:
http://i.imgur.com/KJE01Hx.jpg
NR's main config:
http://i.imgur.com/7Hw4I4m.png
CR's connected devices:
http://i.imgur.com/OZZON5c.jpg ; "Offline Devices" section can be ignored. One of them is the printer, connected to CR directly, and computers on both devices can recognize it. That probably wouldn't be the case though, if it were connected to the NR router.
PC_01 can ping 10.0.0.254 (NR's IP set by CR router), but it won't come up on the browser:
http://i.imgur.com/c4nEfcv.jpg
How can I get devices on CR subnetwork 10.0.0.x to recognize devices of 10.1.1.x network?
Updated schematic:
Edit 04: I spent 45 minutes, to initially ask a Comcast wireless specialist rep, the routing protocol of their YN3720 cable modem/router. I also (made the mistake) of telling him I also have my old router connected to it, as their cable modem's wifi isn't functional with my existing PC_02 wifi card.
So then he brought up bridge mode. I told him I read on the internet, that bridge will render the additional (non WAN) ethernet ports, useless. He says needs to make sure and check with his "supervisor". After 3 minutes he tells me not to worry, only the wireless connection of the comcast router will be gone and
ALL ethernet ports will still be functional.
So after converting the modem to bridge mode, the computer I'm on (which I've been using to make these forum posts), which is coincidentally connect to Ethernet port 1 of the Comcast Router, has a non-private IP address (i.e. doesn't start with 10.x, 172.x or 192.x) with a 255.255.255.254 subnet (256-254 - 1 broadcast address) = only 1 distributable IP. The buffoon keeps telling me to type in 10.0.0.1 to get to the routers control panel. I tell him that page doesn't load anymore, at all, even on the netgear router's PC_02, and he permits me, to type in the default gateway address I see, when I told him I entered ip config, and there was no 10.0.0.1. Of course, the public IP brings up nothing when I type it in the address bar, but Google and other popular websites still work.
I ask him, can I go ahead and connect the netgear router to the ethernet port 1, he says no, he'll look into problem.
The phone line drops, I stay on the line for 5 minutes, assuming he's resetting my cable modem/router (I use their "phone" service as well).
I go ahead and connect the netgear router to Ethernet port 1 of the comcast router, and wireless computer (PC_02) is able to connect to the WORLD WIDE WEB.
I then call comcast back, and I get a different rep (thankfully). He tries to tell me I should stay in bridge mode since, the routers' wireless frequency will interfere. I simply tell him, I'll use channels, 1, 6, 11 as needed. He complies and unbridges my router.
Thank you comcast for wasting 45 minutes of my life, for a simple question. "What routing protocol does your router use?". Of course I should have just googled this.
No wonder "3-5 years of experience: is needed to get an entry level IT job these days...
I've also decided to set a static IP for the Netgear Router (NR) in comcast's router (CR) control panel, while in Netgear's control panel, set the Netgear's IP, to, "obtain automatically" from ISP, and it retrieves the 10.0.0.254 that I set for it. NR has always been connected to CR's ethernet port 3.