04-07-2012 12:30 PM
I have a gateway cable modem that comcast installed and the all the lights are on steady but
the WiFi light blinks all the time and our wireless does not always allows us to connect.
I called comcast and they were no help but would help for $5.95 a month.
04-07-2012 07:29 PM
From the many posts we have been seeing in these forums it seems that the wireless performance of that device is abysmal and the range is short and unreliable. My advice would be to call in and have Comcast place it in to "bridge" so that it acts as any other plain vanilla cable modem and then you use your own high quality wireless capable router with it.
Use this number to reach the right people for the job; 1-800-363-2416.
04-08-2012 12:00 PM
Any suggestion on a good reasonable wireless router?
Almost any decent router will work. The Linksys E3200 and E4200v2 are nice, the new EA3500 and EA4500 line is finding its way into stores now. The Netgear WNDR4000 and up are decent, as are other models from D-Link, Apple, Asus, etc. I would stick with a major brand like those mentioned above and stay away from the el cheapo models, they are cheap for a reason, but if you have a simple network and everything is close together and you have no need for good performance, then they migth be acceptable.
05-16-2012 04:30 PM
I have very intermittent service using my purchased Motorola SBG6850 wireless gateway, which I discovered has well-documented connection issues. I was about to take my local Comcast rep's advice to use their Arris TG862G box when I ran across the invaluable posts in this thread. I can't thank all of you enough. I use a Netgear FVS318G router for the copper portion of my LAN (I need all 8 ports). The SBG6850 is used upstream of the copper router for the wireless LANs (home & guest) and the cable modem functionality.
I would rather purchase new HW just once if possible, so I checked out Comcast's IPv6 rollout pages. There I found their certified-actually tested list of 5 home gateway models:
and 4 cable modems:
1. I'm thinking I should limit my new purchases to devices on these lists. Is that logic sound?
2. Do you think I will run into any issues with any of these devices if I use the native (retail) firmware instead of the firmware versions that Comcast says users should download & install? Said another way, what user control will I lose by doing what Comcast says is best (for them)?
3. Given these lists, Baric are you still solid on your earlier suggestions to have separate networking components: cable modem, wireless router, (& in my case) copper router? If so, will I run into issues if I use say an SB6121 for the cable modem & just use the wireless functionality in say a DIR 655 (plus one E'net cable from it to my FVS318)? It's interesting that Comcast does not list any plain vanilla wireless routers, just ones with bundled functionality. It's even more interesting that none of the devices provided by my local Comcast outlets are on either of these lists.
4. Down the road I'll probaly have to purchase an IPv6 enabled replacement for the copper router, right?
05-16-2012 10:49 PM
Only thing that you might add to that modem list would be the Zoom 5341J. Relatively inexpensive, and most folks who use it recommend it highly. It is IPv6 compliant, as are all D3 modems. Don't be too worried about Comcast not having "verified" its IPv6 capabilities yet.
As far as routers, you have some decent choices...if you are concerned about IPv6, then stick to a model that is already IPv6 compliant, but aside of that, look for the features that meet your needs. As stated previously, stay away from the "base" model offerings from most brands and you won't go far wrong.
05-17-2012 12:22 AM
PeteC2, thanks. I'm still concerned about Comcast dictating which firmware load to use in a device that I purchase, especially if it's theirs and not the vendor's. Loss of user control of some features of the device is the issue. Any ideas on that topic?
And I'm still hoping for/waiting on Baric's thoughts on separate network appliances with segregated functionality versus a bundled package such as the gateway devices on Comcast's list that combine wireless communication, routing and cable modem into one box. Your thoughts on that?
05-17-2012 08:16 AM
I think that Baric will concur on this: Avoid wireless gateways like the plague! They seldom offer good flexibility, and frankly, few of them seem to be very trouble free. Far better to use a modem, or eMTA, and purchase your own quality stand-alone router.
As far as firmware for modems goes: I understand the uneasiness that Comcast is "dictating" which firmware my modem should be running, but, the problem is that they do specifically test modems with a given firmware. Sometimes the "latest" firmware for a particular modem may actually not work well at all with Comcast...
05-17-2012 08:13 PM
PeteC2 is correct, I absolutely agree with him. Seperate components are the very best way to go, never get or use one of these all-in-one gateways, ESPECIALLY the ones from Comcast (which are sooooo bad). Even in a model that basically works there are compromises with features and performance. Stick with good quality seperate devices, cable modem/EMTA and wireless router. While I'd even recommend a seperate router and wireless access point, wired only routers are difficult to come by these days in the consumer market unless you step up to SOHO devices, or build your own (ala IPCop, pfSense, etc), and the decent quality wireless routers from Netgear and Linksys and like manufacturers are so good, it's hard to complain. I personally run an IPCop setup on an old used system here with an Apple Time Capsule providing my wireless network, my cable modem is a Motorola SB6120.
Re: firmware, Comcast is ALWAYS in control of the modem's firmware, it's part of the cable modem standard, go complain to CableLabs if you don't like it ;-). That said, for a good quality DOCSIS3 modem like the Motorola SB612x series, or the Zoom 5341J, I wouldn't worry about the firmware. Comcast only pushes firmware updates they get from the manufacturer (to my knowledge) on these devices, customer owned or not, and usually only after significant testing and "aging". The problem is with these combo devices, the modem AND router firmware are combined in one so if you use one you also lose control of the firmware in the router component as well, which is a bad thing. And since Comcast provides the firmware in their branded gateways, you're getting their software and considering how badly these devices perform now, I have NO confidence Comcast will eventually get it right.
Best to avoid all these issues and just get a seperate modem and router. While the modem may get an update if Comcast deems the firmware upgrade necessary or prudent, they can't and won't touch your router, which is a good thing. And if it turns out you need a router firmware upgrade/update for some reason, you are much more likely to get one in a timely fashion from the manufacturer. The same CANNOT be said for Comcast.
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