Re: Comcast Service bites! Horrid packet loss, they don't care. in Comcast HSI http://www.dslreports.com/forum/r20824913 en Wed, 11 Nov 2009 08:11:47 EDT Wed, 11 Nov 2009 08:11:47 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20843788 cottonwoodz : As of right now my connection is crap.... Was perfect last night]]> http://www.dslreports.com/forum/remark,20843788 Thu, 24 Jul 2008 17:35:31 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20836091 n9yty : I don't think it is the modem, I took the router out of the picture entirely... In fact for a few hours I sat outside with the modem connected directly to the feedline coming in from their box and still had the same issues. Grrrr....

»/r3/smokeping.···86b71.NY

It was quite good for about an hour this morning, then tanked again. :(

Then I tried to get in touch with the local Rockford office... Good luck. That phone number isn't available, only the 1-800 numbers. At least I couldn't get anyone to give me a local number. I said I simply wanted to purchase one of their cable modems to remove any doubt about the problem, so whatever they were selling, I'd buy if it were reasonable... My father-in-law had an install a few months ago and they sold him one for $39, so not too bad. THEY DON'T SELL THEM ANY MORE. You can only lease them for $3/month. Greedy money-grubbing clods... They care not a whit about customer service but they sure are good at finding ways to make sure they get more of your money.

UPDATE:
Interesting... We have Comcast at work, a business account, and we have zero problems there. I did a traceroute from work to my home IP and it's clear it stays close on the comcast net.. (s is source, d is dest IP):

traceroute to dest.system (d.d.d.d), 64 hops max, 40 byte packets
1 s.s.s.s 1.169 ms 0.760 ms 0.743 ms
2 * * *
3 68.85.179.161 7.329 ms 10.742 ms 13.202 ms
4 * * *
5 d.d.d.d 21.714 ms 19.099 ms 21.904 ms

A ping at 0.01s intervals for 10,000 packets has zero loss. Yet still, smoke testing shows loss from NY, CA1 and CA2... So maybe it's not my local loop so much as it is something in Comcast's network.

However, last night after the tech left, I did lengthy tests to my CM GW IP and it would purrrrr just fine and then just stop for several seconds, the response time then jumped WAY high to over 3000ms, and then slowly came back to normal. ]]> http://www.dslreports.com/forum/remark,20836091 Wed, 23 Jul 2008 11:32:42 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20835987 angryviper : I am having the same issue here. Throughout the day the packet loss increases and my connection just drops however the modem lights stay on.]]> http://www.dslreports.com/forum/remark,20835987 Wed, 23 Jul 2008 11:15:04 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20834593 n9yty : Service tech arrived only 30 minutes after the end of the the scheduled window. {sigh}

Wouldn't listen to a thing I was trying to tell him, took forever looking at this level and that level and ignoring anything I tried to share, and then, in the dark (because it was 9:30 at night at this point) decides to run a new drop from the box to the house.

Slight mistake, he grabbed the wrong cable (not burial) but when he realized it (after it was run) he said he'd issue a work order to have them drop a new burial run when they came to do the burial. Maybe he didn't have any on the truck, not sure, don't want to be too critical, he was really trying to help here.

Didn't come back inside to check signals/performance at the modem (or even at the ground block outside), and left after 10PM. Well, guess what... No change. :(

He hooked his test rig up at the box and let it run for a while (he said 50000 pings, must have been rather short interval!) and said it logged no data errors, no packet loss, no anything. I asked what he was pinging, the local head-end, their local network endpoint or what, and he gave me a blank look and said he didn't know but it was a good question. Egads.

So, back to doing pings to the CM GW IP and seeing it go great for a while then just drop a ton of packets in a row and the ping time before they stopped at around 9ms, then after the break the time is around 3500ms and over 300 packets (at 0.01s interval) gets back down gradually to around 9ms again.

So, new cable did nothing for me, wonder what's next....]]> http://www.dslreports.com/forum/remark,20834593 Wed, 23 Jul 2008 00:49:24 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20833350 cottonwoodz : Also, my connection was flawless with insightBB before comcast took over.... sad]]> http://www.dslreports.com/forum/remark,20833350 Tue, 22 Jul 2008 20:22:43 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20833308 anon : I live in the Rockford area too, and have huge packet loss.

I cant do any gaming from 9a.m-2p.m 7p.m-12a.m weekdays, and im lucky if i get a good 2 hrs on weekends(saturday/Sunday).... The between times, my connection is perfect..

This has been going on for a month now, and everytime i contact them they say that there is nothing wrong on there side ....]]> http://www.dslreports.com/forum/remark,20833308 Tue, 22 Jul 2008 20:11:44 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20828761 n9yty : A short test of 5000 pings shows 15% packet loss to my cable modem's gatewaqy IP address as gleaned from it's log file.

Close enough to home?

To my cable modem's IP address (not my public IP, the cable modem's) 0% packet loss on 5000 packets.

Also, it's interesting in that they don't get lost here and there, it will go just fine for a while and then loose a block of them.

Also problems to Comcast's mail server, and any host on the internet I've tried that will respond to a ping... I've been running the smoketests here and they also show high packet loss. The comcast tech (or front line support drone) also did a test while on the phone and saw loss.

Downstream
Frequency: 555000000 Hz
S/N ratio: 35 dB
QAM: QAM256
Network Access Control Object : On
Power Level: -6 dBmV

Upstream
Channel Id: 2
Frequency: 32000000 Hz
Ranging Service ID: 3247
Symbol Rate: 2.560 Msyms/s
Power Level: 41 dBmV

Software Version: SB5120-2.19.0.10-SCM01-NOSH
Hardware Version: 4
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.4

Supposedly they are coming back out tomorrow. They were supposed to be here this past Friday, but never showed and when I called dispatch they said the work order was marked complete even though they never showed up and nothing had changed.]]> http://www.dslreports.com/forum/remark,20828761 Mon, 21 Jul 2008 23:50:21 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20827735 EG :
said by n9yty See Profile :

I've been battling with Comcast over horrid packet loss rates from around 5% on a GOOD day to 80% on bad.
Packet loss to where ? Locally, or farther upstream in the backbone ?]]> http://www.dslreports.com/forum/remark,20827735 Mon, 21 Jul 2008 20:39:39 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20824913 joeblow : You can try calling the Executive call center in PA. Its in the FAQ section here someplace.]]> http://www.dslreports.com/forum/remark,20824913 Mon, 21 Jul 2008 12:27:37 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20824891 n9yty : Well, I have no local line service with AT&T here, and so they rape you on the internet fees... $40/month for 6Mbps down (max) and 512Kbps up (max). At least with Comcast (if it would work properly) I'm getting 10Mbps down/1.0Mbps up for $45. Doesn't seem like AT&T is at all that great of a deal... Even worse when you consider that they give their phone line subscribers a better package (8Mb/768K) package for $35.

But still, that is on the horizon if things don't straighten up, slower but reliable service is better than fast unusable service any day.]]> http://www.dslreports.com/forum/remark,20824891 Mon, 21 Jul 2008 12:25:03 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20824676 joeblow : I done everything CT3 said and like he said also none of it worked so I went with bellsouth. Good advice CT3.]]> http://www.dslreports.com/forum/remark,20824676 Mon, 21 Jul 2008 11:43:19 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20824495 Cabal :
said by n9yty See Profile :

I've been battling with Comcast over horrid packet loss rates from around 5% on a GOOD day to 80% on bad. They scheduled an appointment, nobody every showed up and the ticked was marked completed in their system when I called to complain. Is this what we have to deal with? I miss the days when Insight served the Rockford area, Comcast has been nothing but a disaster, and they just don't care...
It's the same techs.

»Comcast High Speed Internet FAQ »How To Get Help!
--
Interested in open source engine management for your Subaru?]]> http://www.dslreports.com/forum/remark,20824495 Mon, 21 Jul 2008 11:09:21 EDT Re: Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20824457 anon : or cancel your service and report it to the retention specialist? or call the executive center mentioned in the FAQ.]]> http://www.dslreports.com/forum/remark,20824457 Mon, 21 Jul 2008 11:03:12 EDT Comcast Service bites! Horrid packet loss, they don't care. http://www.dslreports.com/forum/remark,20824423 n9yty : I've been battling with Comcast over horrid packet loss rates from around 5% on a GOOD day to 80% on bad. They scheduled an appointment, nobody every showed up and the ticked was marked completed in their system when I called to complain. Is this what we have to deal with? I miss the days when Insight served the Rockford area, Comcast has been nothing but a disaster, and they just don't care...

How in the world do they sell VOIP service over such horrible lines? It muse sound awful.

Maybe I should just do regular monitoring of packet loss and submit to them a bill based on what percentage of packets get through.]]> http://www.dslreports.com/forum/remark,20824423 Mon, 21 Jul 2008 10:55:46 EDT