[Speed] High Latency and Packet Loss - Tech Said They...
I have had some packet loss and spikes of latency upticks for about 2 weeks. I had a tech come out last week -- he tested my modem and said it was the modem, not the line. I requested he replace with...
View Article[Connectivity] Occassional Loss of connectivity but modem shows all is fine
First let me say that I am a network Admin and have a fair amount of knowledge with these matters and have seen all manner of issues with internet connections of all sorts over the years. I have a...
View Article[Equip] Questions and findings user bridge mode ( I use the DPC 3939 )
Got a few questions and been curious about some things. I use the DPC 3939 (home). I had some time this morning and been testing on and off for about 6 hours. From all the testing the DPC 3939 ping...
View Article[Connectivity] Network Diagnostic Tool (NDT) JAVA based app
Anyone able to use this tool anymore with JAVA being disabled in Firefox and Chrome? I tried enabling it temporarily but it's blocked by security settings on my PC. http://ndt.anl.gov:7123/ [att=1] --...
View Article[Connectivity] 64QAM?
Not sure how long this has been this way, but I noticed all 3 of my upstreams are 64QAM now. I know somewhat recently the 1st was always 16QAM. Northeast Philly here... Will this make any difference...
View Article[IPv6] BCI delegated prefix
I now see a /64 delegated to me via Comcast. can I get a /48 from Comcast or what are the options? -- semper idem 1KTzRMxN1a2ATrtAAvbmEnMBoY3E2kHtyv
View Article[Connectivity] Speed Test Vs. Download Test--with b=Blast??
I am getting what I consider awesome results from the speed test, but should it not reflect on an actual download of a huge file? It should takes seconds to maybe a minute to download a large file such...
View Article[Equip] Router Recommendations
Hi, My old Netgear WNDR3700v2 has been giving my wifi clients issues for a while now, random loss of connectivity, and also does not seem to support IPv6 on my comcast service. I suppose it is time to...
View Article[Connectivity] "forums.comcast.com" down?
having trouble getting to http://forums.comcast.com and http://forums.businesshelp.comcast.com . everything else works. traceroutes show it failing just past a local regional device. anyone else see...
View Article[Connectivity] SB6183 and T3 timeouts and T4 reboots
I have a SB6120 and experience issues with T3 timeouts and eventually T4 reboots. I've had comcast out a number of times and nobody's been able to fix it. I'm going to be getting a new modem soon to...
View Article[Equip] SB5120 for 25 Mbps service?
I have a Motorola SB5120 cable modem like new in box, which I bought from Comcast previously. I am considering returning to Comcast and purchasing their "Performance: 25 Mbps" plan. How well will the...
View Article[Connectivity] Packet loss issues in Portland Or since 01-09-15
The below is a copy of my post from the official comcast support forums, just looking for any feedback here. Since I rarely post anything I don't get much chance to say this, but this community has...
View Article[Price] Moving Service To New Address - Lied to about price?
I have Internet+HBO Go (and an unopened SD TV box, since I have no TV) for $44.99/month (+8 modem rental +3.01 fees = $56 total). I called and asked for service at a new address, temporarily having...
View Article[Equip] DPC3941T Who has and what do you think?
DPC3941T Who has and what do you think? Any Screenshots of the modem set up pages or is it completely the same as the DPC3939. Thanks as I am getting one Thursday morning.
View Article[Connectivity] IP Location Question?
I'm Located in Joliet, IL and since November when my Modem rebooted, it's been saying I'm located in Columbus, Indiana. Is there anyway I can go about changing it back? When I game on PS3/PS4 it's...
View Article[Equip] Best Motorola Modem...
I'm getting my mother signed up with Cable Modem service soon. I've seen where Comcast has just hiked the rental cost of the modems to ~$10/month, so now its obvious that buying the modem is a better...
View Article[Speed] The speed goes down by 1/2 to 1/3
When the slowdown happens OFF/ON power cycling the modem recover the normal speed(~120Mbps). It stays for 3 to 4 days and the slowdown recurs. The modem is Zoom 5341J which I got about two years ago. I...
View Article[Speed] Been awhile since I checked the Comcast speed test site....
I see they check for speed for both IPV4 and 6. So, IPV6 is crappier? [att=1]
View Article[CustSvc] Call from "Comcast" - 510-336-4705
Received a call today from 510-336-4705 ("Unknown Name"). Answered it and the person stated they were calling from Comcast. They said that they were calling regarding a technician visit a while back to...
View Article[Signals] "Normal" look from spectrum analyzer
I just replaced my cable modem with the SB6183. Pulling up the spectrum analyzer is interesting, but I was wondering what it should normally look like. It seems like after 700mhz, the power drops...
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