Comcast Wireless Internet Connection Via Cable And Router?
Jul 10, 2011
We have Comast internet using an Arris modem and have a Netgear wireless router. We have our modem hooked up to a desktop computer that we don't even use. We have three laptops that we us with our wireless.Comcast has told us that we have to have the modem hooked up to the desktop for the internet to work.what do people do who have only a laptop and have wireless internet in their house?Is there anyway to get rid of the desktop and have the modem hooked directly to the cable and router?
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Jan 24, 2012
I have a problem with my E3200 that has happened at least 4 times since I first purchased, installed and configured it. Initially I thought it might be something with Comcast, but a) I never had the problem with my Linksys WRT54G router and b) It seems I can now duplicate the issue by saving a config file and restoring it.The specific issue appears to be somewhat random. At some point the connection to the Internet simply stops for no apparent reason. I am able to ping the router and connect to it. I am also able to drop and renew connections to the cable modem successfully. Furthermore, I can ping my network side of the router, as well as the external address handed to my router by the cable modem, and the cable modem gateway address, but still no connection to the Internet.The only solution to my problem has been to restore the factory defaults to the router and reconfigure it from scratch, which does seem to fix the issue for a time until it occurs again. FYI, I do not use the Cisco connect software because I have several custom port and QOS configs that are necessary for an IP Phone and other hardware on my network.
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Jan 5, 2011
Hard wired network (15 workstations.) I had a dsl modem connected to my network switch and linksys wrt54gs router connected to that modem. All hard wired workstations had internet access AND there was a wireless internet connection. With any wifi device I could access the internet.I switched from dsl to comcast. All hard wired work stations still have internet. but when I plug my wireless router into the modem (comcast business IP gateway) there is no wireless internet connection. The hard wired workstations can still get online and there IS a wireless network, but it does not allow internet access (page cannot be found etc.)
Comcast says it absolutely should work. Linksys says it requires simple reconfig of router settings (reset router, clone mac address.) I have read knowledge base articles from linksys and followed each step. The lan ports of the modem are all working if I connect to them directly with a laptop and cable. I have reset router multiple times, cloned mac address, dhcp release/renew.
My physical connections are correct. In the router set up utility, I can see the mac adrdress and ip address but can't tell if the IP is from the modem or the router. Default gateway is always 192.168.1.1 in the router AND in any workstation ipconfig screen. Ip addresses are 192.168.1.xx in ipconfig at any workstation AND in the router set up status.
I cannot access internet via router even if plugged directly into it. It is as if the router is not getting the correct information from the modem. However, it worked perfectly with the DSL modem the day before we changed.My workstations are all hard wired and work. I simply want to have Wi-Fi also... for phones and laptops w wireless etc.
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Jan 12, 2010
I have a need to have 2 seperate networks from my comcast cable modem.I was hoping to plug a 5 port hub into the cable modem and then plug both the wrt610n and the wrt54g into the hub. Seem that only one of the routers will get an ip assigned from Comcast.Is there a way to have one ISP cable modem and create two different home networks with the two linksys routers, thus two separate independent networks?
-Network 1: public household use and family (Jane's wireless laptop, household PC's etc).
-Network 2: private household/company use and separate from the public family network (company wireless laptop/company PC, un-secure media server).
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Apr 15, 2011
Is it possible to access the internet directly using the provider's hdmi cable routed through a generic device?
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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 8, 2011
I am swapping my AT&T DSL and Comcast cable for U-verse. In the basement, I have a Netopia DSL modem connected to a Linksys BEFRS81 v. 3 ethernet Cable/DSL router/8-port switch. Cat 5 cables are attached to the router, then run throughout the house so we are "networked" to the DSL modem and use a patch cord from laptop or desktop into the wall to get to the Internet.
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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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Jan 21, 2011
I recently switched from a DSL ISP (Earthlink, Zyxel modem configured as a bridge, pppoE connect) to a cable ISP (Comcast, Arris cable modem, dhcp connect). Basically PC --> DIR615-->Cable modem-->Internets. With the old DSL the Internet activity LED (green, looks triangular) on the DIR615 blinked only when internet activity occurred. With the new Comcast connection it blinks non-stop about 5 times a second! Even if the PC is turned off it blinks. It stops blinking if I disconnect the ethernet cable between router and modem. The connection itself is fine, but if the DIR615 is doing something it should not be doing it might slow the connection down a bit, (or burn something out prematurely?)FYI, the Arris cable modem does not seem to be a router. It takes a cable connection from outside and provides a single ethernet cable and 2 (voice) telephone cables to the house.
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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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Apr 18, 2012
I just recently purchased comcast internet today and self installation kit that came with the modem and all..... got it all set up no problems activated did speed test directly from cable modem to laptop computer wired and was getting 10mbps down and 3mbps up well went out and bought a linksys e900 wireless router.... connected it no problems... however my laptop wireless and phones connected to the router with speedtest is only getting 300kbps down average!!! but the upload is still 3mbps.
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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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Jan 12, 2012
Comcast has inform me that my cm-100 is no longer compatible with their new upgrade. They say I need docsis 3.0 and mine is only certified to 2.0.
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Jan 24, 2013
I have Comcast 20Mbps internet. When I'm on the Mac partition of my computer, I get 15Mbps download and a ping of less than 10 on speedtest.net. When I'm on my Windows partition, I get a ping of around 250 with a download speed of 1.5Mbps. I read posts where people said disabling their firewall worked, so I disabled mine and it made no difference.
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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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Apr 28, 2013
I have xfinity internet with a comcast rented modem connected to a personally owned belkin router. I can successfully connect to the internet directly from the modem or if I connect to the modem to the router and then to my computer via ethernet cable. I cannot for the life of me connect wirelessly with any devices. The router previously worked when it was hooked up to comcast internet, but it was moden->router->my router. When I connect wirelessly on my Windows 7 laptop, it says I connect and that there is internet access. But when I try to load a page it takes me direclty to this website: url.. Comcast says that it is my router that needs configuring properly with xfinity and wants to charge me $39 to provide this wonderful service.
Router: Belkin Model F6D4230-4 v1 with firmware F6D4230-4_WW_1.00.03
Modem: Comcast Model RCA DCM425
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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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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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Jul 12, 2011
I setup my own wireless connection using Cox Cable some time ago and it's been working with no problems. Today I tried to setup my sister's laptop with a wireless connection also with Cox Cable. Router is setup correctly and the connection says signal strength is excellent. However, the computer will not connect to the Internet.She has a Motorola Modem which a Cox Tech says he can see the modem so that's ok. I noticed the on the Modem the PC Connectivity light is amber and steady. While I have a different modem with the same company, my PC Connectivity light is green and it blinks from all the Internet activity P.S. All other setting are correct i.e. Obtain IP address automatically, DNS setting, DCHP etc.
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Apr 18, 2013
I am trying to determine why Comcast Business Class modem configured with a static IP (IPV4) works with a laptop or Linksys Cable modem but not with a Cisco ASA 5505. After a few minutes, the 5505 stop passing web traffic. I am able to ping the default gateway even though I can not surf the web. Restarting the 5505 and the Comcast modem, web traffic flows for a short period of time, then stops. I can connect inside the firewall via ASDM 7.1.1 and via SSH. I can not connect via either from the outside. Comcast tech support indicated their router is working and is configured in bridge mode. I swapped out the 5505's memory, and then with another 5505. Nothing seems to resolve the issue. I am trying to determine if the 5505 or the Comcast router is not configured correctly.
Here are the parameters: The 5505 was reset to default factory settings via the command: config factory-default. Configured the outside interface with static IP Address followed by the no shutdown command, then removed DHCP features from outside interface. Added Comcast DNS servers, default route, ntp servers, configured DHCP features on the inside interface. Enabled HTTP/SSH (inside & outside interfaces) and ICMP echo-reply (outside only).
I believe the Comcast modem is not configured correctly. The show version and show startup output are below.
ciscoasa# show version
Cisco Adaptive Security Appliance Software Version 9.1(1)
Device Manager Version 7.1(2)
[Code].....
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Jul 24, 2011
I have an RVS4000 V1 router connected to a Comcast Extreme 100 mbps cable modem.The port setting for the port (number 4) is 1000Mbps Full Duplex, auto Negotiate.why the RVS4000 is throttling the port?
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Aug 26, 2012
The detected problem is the connection between my access point, router, or cable modem and the Internet is broken.The network gateway is accessible, but Windows couldn't receive network traffic from the Internet.All other devices (iPad, Xbox, android phone) have no problem connecting to the Internet.Desktop is the only one experiencing the connection issue.
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Jan 31, 2012
My laptop died last week and have been using my husbands, which I hate! We had some issues with computer freezing on some webpages or after being on webpages for awhile (like facebook). Yesterday it froze and I could not get it back on. When he got home he did scan disk (which I also did) and got it working after going into safe mode and doing system restore. He said an update had gotten through and messed things up. Anyhow, after he was on it a few hours last night, we lost connection. I figured the crazy weather was the culprit but it has been off all day. Our router is working and connecting but the adapter is not. Also our home phone says there is no line. We have unplugged everything several times, checked to make sure everything is in the right spots, I have even reset the router and rebooted the adapter. I uninstalled and restalled the adapter also. It is now telling me that "the connection between your access point, router, or cable modem and the Internet is broken". The only lights I have on the adapter are power, battery, DS and now the US light is blinking. The online and link lights are not on.
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Jun 26, 2012
does wireless internet require a cable connection
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Feb 17, 2013
When we got broadband through our cable provider (Comcast), we were sold a single user license even though we were explicitly connecting two computers.Upgrading to a multi-user subscription (for up to 5 connections) solved that.I'm currently trying to configure 4 computers to connect. I have noticed that if a configuration for one has WPA and another has WPA-2 they will bump.This may be true for differences in WEP-keys, TKIP setting, etc. If you do new configurations, the settings may revert each time to a default, which you may not notice.Keeping the network settings matched may work. Using a portable memory device to run a saved configuration on each machine can improve their synchronization.
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Feb 28, 2012
I was able to install the RV042 router to my ATT DSL line (WAN1 port-INTERNET) and it gets an external IP address automatically and the Internet works. When I connect my Comcast Internet to WAN2 port INTERNTE/DMZ) it doesn't get an IP address. and the Internet goes down and the WAN2 port ip address says 0.0.0.0.I've tried releasing/ renewing and it still says 0.0.0.0.Everything else is set as the default.
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Sep 11, 2012
I have had comcast for 4 years and for the last two years my comcast connection had been dropping. At the time I didn;t take it as a big deal because I have bad connection but not it's way too frequent to ignore. I have gotten a new router and exchanged a modem from comcast. Basically at a random time of the day internet just goes off. To fix it, I have to go up to the router and disconnect and reconnect the router. Even sometimes it doesn't fix the connection so now to fix the dropped internet everytime I do the following procedure: Unplug ethernet cable from modem --> Unplug the modem --> unplug the cable that connects the modem and a Y-extension for TV and internet
Motorola modem: (new one)
Software Version: SB5120-2.19.0.16-SCM00-NOSH
Hardware Version: 1
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.4
Cisco E-1200 v1 router (new one)
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Apr 25, 2012
For those of you who are trying to connect your router to a Comcast modem, be sure to actually RESET the modem instead of just depowering it like it instructs you in the setup process. This should save a lot of trial and error. Also unmark the MAC address cloning like the Cisco connect software does, then just renew IP and it should connect just fine.
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Jun 26, 2012
My hp laptop will no longer connect to the internet thru both a wifi connection or cable connection. I've also tried to do a system restore to an earlier date and it will not let mme do this either
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Jul 10, 2012
Just got a never used AT+T Wireless Router (2701HG-B Gateway) from a friend to use with my laptop and comcast broadband connection. I have windows vista, and use IE as my main browser. Can I used, or is it set up to only work with an AT+T connection? I do have all the software discs that came with the unit, but haven't run them as they seem mainly for setting up DSL connection with AT+T.
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Jul 26, 2010
I have tried to connect Comcast to my new E2000 router, with negative results. I did perform the firmware upgrade on the router (to 1.001). My old Netgear WiFi router works fine, so I know the configuration works.For testing purposes I have the following:
MacBook Pro > E2000
Comcast > E2000
Both via Ethernet cable.
I do have access to the E2000 via web based interface. I have tried a variety of configurations, including the use of the "static" configuration using the current Comcast ip, gateway, subnet and DNS that currently exists. I am unable to get the Auto DHCP to work - Comcast ip's do not appear (in the "status" window.)
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Sep 21, 2012
I bought this wonderful voice gateway off the internet from someone. So not sure if they ever used it with Comcast.So far I hatve had no internet once I plug it to the cable. I have asked Comcast tech for activating this device. However they say it is not supported and they have tried sending it the Activation signal but they say it fails. I can see all lights lit up and go green when I connect this device to the cable, is there a firmware upgrade for DPQ3925 ?
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Oct 16, 2009
My router worked fine. Comcast did updates and now it wont work. If I connect the cable modem to the laptop the internet works fine.It's the router. She said I need to reconfigure it. I tried looking on the site, typing in the 192.168.1.1 thing and the password "admin" is not correct.
My cable modem is Motorola SB5120. My linksys is WRT54G2 V1. how to reconfigure this to work! We work from home and this is a huge obstacle for us to not have wireless internet
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