Comcast Modem To Support 2 Ethernet Pcs And Wifi

Jan 17, 2012

Just got home from the Comcast store with a $7 rented modem just to last me until I do research and purchase one. I realize that this modem has only one Ethernet port with no WiFi support so I have another PC and a laptop sitting idle because there's no internet access. Did a quick search using Comcast's authorized modem's list and all of them only have a single Ethernet port and no WiFi. Is there a modem with multiple Ethernet ports with built in WiFi? I am getting almost 20mbps with a download speed of 4mb/s which is a HUGE improvement over my ATT DSL service that I've had since forever at 3mbps with a download speed of 300kb/s. I have no idea what technical specifications to look for in a cable modem to get 100% of full potential speed from my service without disconnects or other various problems.

I have a ATT U-Verse router sitting here right now, I am wondering if I can somehow connect it to my Comcast modem. I tried to connect the ATT router into Comcast modem via Ethernet cable, but I couldn't get past the "Your DSL service is unavailable" in the browser, but in my desktop system tray, it shows I am connected to the internet. If I could use this router, I would rather spend money on a modem instead of getting a combo.

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D-link Dir-655 :: Arris Docsys3 Modem From Comcast Which Has A Built In Wifi Router

Aug 17, 2012

I have an ARRIS Docsys3 modem from Comcast which has a built in WiFi router. I also have a DIR-655. The Modem is in my office and I have a 100' Ethernet cable running through my attic to my front room where the dir-655 is located.

I use the DIR for WiFi as well I have it connected to my TV and Xbox.I use the ARRIS Modem for WiFi as well I have it connected to another Xbox and a Desktop computer.I want to have everything on 1 network, Dir-655 uses IP address 192.168.0.1-100 and the ARRIS uses ranges 10.0.0.1-100. I want to be able to connect to the dir-655 and have the IP for that connection join up with the 10.0.0... network so that I will be able to transfer files freely throughout the network.

I want everything on one network. Right now when I connect a laptop to the DIR-655, I can not access the printer that is connected to the Desktop on the ARRIS modem. I have to connect to the ARRIS modems WiFi to then use the printer on the desktop.Likewise, I want to use the media extender on the Xbox connected to the DIR-655 with the Desktop connected the the ARRIS modem, but I can not because of the to different networks.

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Feb 7, 2013

I work in small office with four users and we use Comcast as our ISP. A separate room from the office has our cable modem. The cable modem has a Ethernet cable going to a WRT54G WAN Port. The WRT54G is not being used as a wireless router.Coming from the LAN ports is a Ethernet cable going to a Netgear switch.The office has Ethernet ports and one of them is hooked up to a Netgear WDNR3700 wireless router. All users are utilize the wireless network to get online. There IP Address is 10.0.x.x. When I use a Ethernet cable to a computer my IP Address is 192.168.x.x.

What needs to be done so the IP Addresses of the wireless network and wired network use the same IP Address range?

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Oct 17, 2012

I'm looking to upgrade my SB-5100 Motorola Cable modem that I now rent from Comcast. My main objective is to increase my internet performance.

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Dec 22, 2012

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May 25, 2011

I cannot get my computer to recognize my Netgear WNR1000. I have called Netgear to explain the issue and was on the phone with them for 45 minutes.They did get the laptop to work but my desktop still does not. They told me it was a browser error. If I disconnect the ethernet cable from the router to my computer everything works perfect.I tried to reinstall the CD that came with the router and as I try to get through step 2 it says no router detected.I think this is my hold up but I have no way to know how to fix this. I tried to go on the Netgear website and they tell me that I have to be able to connect to the internet to download through the router. Well I can't do that because obviously that is the hangup. If I click on my Network Connections. It shows my computer connected to a Network with limited capability and then a big red X going to the internet.

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May 28, 2010

Life was great with my DIR-615 and Motorola Surf Board SB-5100 cable modem, but my D-Link refuses to recognize the Internet signal from the Thomson.  The Comcast guy spent an hour trying to get it to work, but I'm stuck watching MLB.tv on a 24" monitor in a stiff office chair in my study, instead of on a 47" LCD in my living room.  How can I force the DIR-615 to accept the Thomson ACG905?  If you advise me to check settings or manually change them, please do not "assume" that I know how to access those settings. 

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Feb 11, 2013

Moved into a home that has a wiring closet in the basement. Typical wiring closet setup, Cat 5 cables and Coax cables from the house outlets terminate there. There is a Suttle sam v8m voice distribution module installed. Looks exactly like the one in this user manual:Page 5 of 8, Wiring Diagram.URL,However, there is NO Sam D8 switch below installed in the wiring closet. The Cat 5 cables from the home outlets enter the wiring closet and plug directly into the Sam V8m.Can a comcast modem be connected to the Shuttle Sam V8m to make the Cat 5 outlets hot? Or, does the Sam D8 (or similar) need to be installed?

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Jul 24, 2012

Our small business just moved into a new building and I am in charge of setting up the network infrastructure. I am not new to computers or networking but I have never had to deal with this set up before.

Our current set up.We have a cable modem from comcast that has the Coax cable connected to it.The modem has 4 ports on it. The ports are connected to a built in 24 port switch that was already in the building. The switch has it's ports connected to outlets in the walls. Currently we have 4 computers on our network and since the cable modem had 4 ports it worked fine.

What we need? We will have another person join our office so I will need to activate one additional port on the switch that already exists. However, since all 4 ports on the modem are already taken, I have no way to add an additional port. They also want us to get wifi in the building.How I think I have to solve the problem (most likely wrong).I have to get another switch (like 8 port) and connect the cable modem to the switch using a cross over cable (if there is no designated internet port). Since I have the modem connected to the switch, I will have to move the 3 remaining connections to the switch.

Then I connect the 4 remaining ports on the switch to the existing 24-port switch that is already there. I will use one of the outlets in the building to connect an AP for Wi-Fi for better signal. Currently the modem and switches are hidden in a closet away from the office space and would mess up the signal.

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Feb 15, 2012

I hav a laptop conecteted to the internet with comcast service and a netgear wireless router that works fine. but bought a desktop and when i hook it to the router i get no internet. im running windows 7 ultimate on both machines. i am gettin a thing saying unidentified network in my network settings and i called comcast whent through resetting the modem and router with them and nothing then they tell me i have to pay them to run another machine of of my router this is ridiculas i have the machine pluged into the port on the router with anethernet cable everything is hooked up right i know this im pretty computer savy as ive built many machines in the past.

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Oct 21, 2012

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Jun 28, 2012

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Apr 7, 2013

We have kids in the house and I'd like to limit their internet access to certain times of the day but because of the great amount of devices they use (phones, tablets, laptops, etc.) the only way I could think of doing that easily was to set up two wireless networks: one that the adults could use 24/7 and the other that the kids could access during certain set hours.

Here's the equipment I'm working with:

DLink DIR 615 wireless router
DLink DIR 515 wireless router
Motorola Surfboard cable modem S85101U

I plugged the DLink 615 in, set it up for DHCP client and plugged it into the cable modem. I lef the default 192.168.0.1 IP address for the device. On that router, I also reserved the 192.168.0.199 IP address and assigned it to the DLink 515.I also gave the DLink 515 device the IP 192.168.1.1 so I could administer it.I set the DLink 515 to static IP and made the IP 192.168.0.199 and the default gateway 192.168.0.1.I plugged the DLink 515 into one of the LAN ports in the DLink 615.I set a schedule on the DLink 615 to shut down internet access to the DLink 515 at a certain hour and turn it back on at another time.Everything seems to work ok, but at least once a day we have to unplug and plug the routers to reset them.

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Sep 21, 2012

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Jun 29, 2011

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May 27, 2013

I've got a ASUS AC66 router plugged into my Comcast cable modem (regular dumb modem), it's running the Merlin (OEM-modified) firmware.I've got a Netgear 3400 router flashed with DD-WRT (latest build), it's a replacement for another N router that died on me.

Anyways, I went to set client bridge like always. Main router is 192.168.1.1 so I set DD-WRT router as 192.168.1.2, set the wireless modes to client bridge with matching SSIDs for my 2.4/5GHz radios, input the correct security keys on the security page (AES), then I put the router in router mode (from gateway) Basically, I followed the instructions on DD-WRT's website, which worked perfectly until the other router died.

This time around as soon as the DD-WRT router reboots with its bridge information saved it immediately causes some sort of conflict on my network and kills the internet and all network connections. All devices lose their IP address. It's like the DD-WRT router is somehow shutting down the network and my default router.

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Nov 27, 2011

My neighbor is using my Belkin Router the basic one and has comcast. We both use his internet and have had no problems until the past 3 days. He just got the home phone service from comcast and the phone line is setup through the modem. Ever since comcast came to his apartment and set this up the home phone service to his modem the router is connected but there is no internet access. What is going on and how can I fix this. He has an HP with windows Vista and I have a Toshiba Satellite L675 that has Windows 7 Home premium edition on it.

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Jan 12, 2010

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Mar 23, 2011

Every day for the past week my Internet access goes down. I have a netgear router connected to Comcast modem. I have to reset the modem then the router constantly and it gets irritating. I called comcast and they say reset them. But why should I have to constantly reset.... Sometimes I just ignore it and it comes back up later... what is going on??

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Aug 9, 2011

Comcast had us unplug our modem in order to upgrade to their new faster speed.  now our wireless router won't work.  We've reset the router twice.  we can set up the wireless network but we cannot connect to it.  The connection last for about 5 minutes and then we get an error, cannot read IP address.  Comcast says it is not their problem and linksys says they can't assist either.

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Apr 25, 2013

Currently have a linksys wrt54gs connected to an Arris TG852G/CT.  Currently getting poor speed via WIFI for Comcast Xfinity service.  The Arris modem is connected directly to the Linksys Wireless Broadband Router via Ethernet.  It lists the linksys broadband router as unknown device and does need utilize the 54 mb/s g standard available on this device.  I have updated the firmware to 1.52, reseted the Arris gateway to factory defaults, and reset the linksys to factory defaults as well. The IP  address is 192.168.1.1 for the linksys/ 10.0.0.1 for the Arris gateway.How do I improve connectivity between the Arris Gateway and the LinkSys broadband router (model WRT54GS ver 6.0)

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