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Anyuser2
join:2008-03-19
 ·Comcast
1 edit | Re: Blast 16/2 running at half speed You don't have anything listed here about your setup or your levels, outside of the model of your modem...
I didn't get speed test results that were consistent with 16/2 until I did a firmware update on my older Linksys router. Of course, I didn't both to try that until I had confirmed that my Scientific Atlanta DPC2100 had the right bootfile. | |
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iamdak
@comcast.net
| As I stated; I tried both my desktop and and laptop directly connected via ethernet to the modem itself. They both reported 8Mpbs with about 3Mbps up consistently. As per the diagnostics of my modem:
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Forward Path:
Signal Acquired at 723.000 MHz
SNR: 34.7 dB
Received Signal Strength: -8.7 dBmV
Bit Error Rate: 0.000 %
Return Path:
Connection: Acquired
Frequency: 32.0 MHz
Power Level: 47.3 dBmV
Channel ID: 7
Modulation: 16 QAM | |
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Anyuser2
join:2008-03-19 | Re: Blast 16/2 running at half speed My bad, it was more of a passing mention and it didn't really stand out when I looked over what you'd posted.
I'd definitely try and check your config file, or what the modem reports the speed caps at. | |
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iamdak
@comcast.net
| Re: Blast 16/2 running at half speed Ok -- so I did some extra digging and was able to get my modem to display the config file info. This is what the log showed:
SW Download INIT - Via Config file d11_m_dcm425_speedtierextr...
'speedtierextr' seems to be the config file name. | |
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Not a name
@verizon.net | Re: Blast 16/2 running at half speed Did you try rebooting the cablemodem?  | |
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iamdak
@comcast.net | Re: Blast 16/2 running at half speed yup! Tried rebooting the modem and my computers. I also tried reseting the modem by tapping the reset button and by holding it down for 15-20 seconds.
I'm still getting an average down rate of 8500 kbps. | |
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Johkal
Cool Cat
Premium,MVM
join:2002-11-13
Happy Valley
clubs: | What are the TCP settings for the PC & laptop? | |
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iamdak
@comcast.net
| Re: Blast 16/2 running at half speed The TCP settings in windows for both PCs are the standard Obtain IP and DNS automatically. Is there something more specific I can dig up?
(and I rebooted and reset everything several times  ) | |
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Johkal
Cool Cat
Premium,MVM
join:2002-11-13
Happy Valley
clubs: | Re: Blast 16/2 running at half speed Run a tweak test on both and post results: »/tweaks | |
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iamdak
@comcast.net
| Re: Blast 16/2 running at half speed Desktop:
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Receive Window (RWIN): 65535
Window Scaling: 0
Path MTU Discovery: ON
RFC1323 Window Scaling: ON
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1460
TTL: unknown
TTL remaining: 108
TOS flags: none set
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Actual data bytes sent: 1031301
Actual data packets: 708
Max packet sent (MTU): 1500
Max packet recd (MTU): 1500
Retransmitted packets: 5
sacks you sent: 71
pushed data pkts: 128
data transmit time: 7.072 secs
our max idletime: 235.3 ms
transfer rate: 138267 bytes/sec
transfer rate: 1106 kbits/sec
transfer efficiency: 99%
---
Minimum ping: 98.27 ms
Maximum ping: 102.79 ms
Ping stability:
99.55 99.60 102.79 100.57 99.43 98.27 99.15 101.26 102.32 99.56
:: Laptop in a min :: | |
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iamdak
@comcast.net
| Re: Blast 16/2 running at half speed Laptop:
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Receive Window (RWIN): 65535
Window Scaling: off
Path MTU Discovery: ON
RFC1323 Window Scaling: OFF
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1460
TTL: unknown
TTL remaining: 108
TOS flags: none set
---
Actual data bytes sent: 1026921
Actual data packets: 705
Max packet sent (MTU): 1500
Max packet recd (MTU): 1500
Retransmitted packets: 2
sacks you sent: 75
pushed data pkts: 95
data transmit time: 3.721 secs
our max idletime: 314.5 ms
transfer rate: 247515 bytes/sec
transfer rate: 1980 kbits/sec
transfer efficiency: 99%
---
Minimum ping: 98.57 ms
Maximum ping: 113.58 ms
Ping stability:
98.57 99.45 99.31 113.58 102.64 99.98 108.41 109.38 99.59 99.22
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Both suggest an RWIN of between 154760 and 410260. | |
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hobgoblin
Sortof Agoblin
Premium
join:2001-11-25
Orchard Park, NY
clubs:
| Re: Blast 16/2 running at half speed said by iamdak :
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Both suggest an RWIN of between 154760 and 410260.
You might want to do that then!
Hob
--
"A foolish consistency is the hobgoblin of little minds."
- Ralph Waldo Emerson
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iamdak
@comcast.net | Re: Blast 16/2 running at half speed Using the suggested app I put the RWIN to 300,000. The speed tests still come out to 8500 avg.
I'll try it again though on my desktop! | |
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iamdak
@comcast.net | Re: Blast 16/2 running at half speed Tried on my desktop; no dice. Still getting 8000-8500 average. | |
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EG
The wings of love
Premium
join:2006-11-18
Union, NJ | Re: Blast 16/2 running at half speed said by iamdak :
Tried on my desktop; no dice. Still getting 8000-8500 average.
Are you re-booting your computers after performing the tweaks ? | |
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iamdak
@comcast.net | Re: Blast 16/2 running at half speed I am rebooting after each tweak and I am getting 8500'ish down consistently on pretty much every speed test I've tried. My up is a consistent 3000 which is fantastic tho  | |
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oO
@comcast.net | When did you exactly get your service? I was hitting 16mb mark the past week but it dropped to 8-9mb mark yesterday to today. I live in San Fran as well. | |
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peteyturbo
join:2008-03-23
Philadelphia, PA | Sounds like we may have the same problem | |
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| nitros22
join:2004-11-03
Chicago, IL | Re: Blast 16/2 running at half speed This is the same issue in chicago. I dont think comcast has he capacity to do this yet and they just up and did it. i cant get it fixed and am ready to change providers to actually get some kind of internet. My internet isn't working well either. | |
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iamdak
@comcast.net
| Re: Blast 16/2 running at half speed My internet was activated on Saturday (yesterday). I've since noticed it go as far as 11.5Mbps with the rare spike to 14, but it averages about 8.5Mbps. I feel its worth mentioning that 8.5Mbps is still fantastic, but I'm trying to gauge whether its worth getting a slower (cheaper) service instead of paying for 16Mbps and getting only 8. | |
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| | | nitros22
join:2004-11-03
Chicago, IL
| Re: Blast 16/2 running at half speed Its horrible i am paying 64.99 for 16 meg and i am not even getting it. But now the problem is not only the speed but the fact that my service is not working the way it should be. I cant get webpages to come up at times its just a huge mess. This looks like this speed problem is going all over the comcast network. Someone needs to wake up at comcast engineering and see what's going on. | |
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Anyuser2
join:2008-03-19
·Comcast
2 edits | Re: Blast 16/2 running at half speed said by nitros22  :This looks like this speed problem is going all over the comcast network. Someone needs to wake up at comcast engineering and see what's going on. I'm having absolutely zero problems. I don't know anybody personally who is having any problems. You're all in totally different markets, and while you are having some similar issues they are completely and utterly seperate, isolated problems. Particularly your problems browsing - you need to troubleshoot your connection.
This is not some kind of national problem.
This is what I'm getting with the 16/2 at work (I get similar results with my 16/2 connection at home):  | |
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| | | | t3ch2000
join:2001-06-13
Chicago, IL
1 edit | i had this service for about 7+ years now, and i'm also getting the same problem as you, never seen my connection go down this much in awhile, I have no reason to call comcast about it because i have lived thrue this for 7+ years and i'm pretty much use to this and I have called comcast about this a couple of times, but it looks to me that this is a internal network problem.
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oO
@comcast.net | Hrm, well I talked to a tech earlier and said the signals from my modem were fine. But speed results showed 9mbs dl/ 2mbs ul. They will be sending someone over on Tuesday morning to check on it. I'll make another post if they find the cause. | |
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oO
@comcast.net | So the Comcast tech just left and he said everything was fine on my end. He's going to file a report to their network and... well thats all he said.
Was getting test speeds of 6-7mbs while he was here, hope it gets fixed. | |
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herman
@comcast.net
| Re: Blast 16/2 running at half speed oO, I had a tech come out to my house too. He checked everything and it was fine on my end also.... this is quite irritating.. he said someone will check the line up the pole the next day.. no one came. I called comcast and apparently they canceled that appointment.. Not cool how I'm paying for what I'm not getting. | |
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beerbum
Premium
join:2000-05-06
Reading, PA
clubs: | Re: Blast 16/2 running at half speed do you get the same results using tests at »www.speedtest.net ? | |
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| | | Cheddah
join:2001-12-31
San Rafael, CA
| Re: Blast 16/2 running at half speed I live in Marin, just 15 mins north of SF and got 18401/2600.
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herman
@comcast.net | I'm getting the same problem.. but I'm hitting 6/7down and 2up.. kind of irritating to know that when i had 6mbps it ran faster. | |
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luckystreich
join:2005-11-05
Hartford, CT
 ·NETPLEX
| just remember, your 16/2 is not guaranteed. It is up to that speed...
with AT&T's DSL of 6.0 mbps (if you can get it) - you can virtually guarantee you will get 4800 kbps all the time.... cable offers a higher potential but there will be variances in speed. | |
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iamdak
@vcentertainment.com
| Re: Blast 16/2 running at half speed said by luckystreich :just remember, your 16/2 is not guaranteed. It is up to that speed... with AT&T's DSL of 6.0 mbps (if you can get it) - you can virtually guarantee you will get 4800 kbps all the time.... cable offers a higher potential but there will be variances in speed. Does anyone here in the San Francisco area get a consistent ~16Mbps with their Blast connection at home? | |
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| | cabledsl
join:2001-01-05
San Francisco, CA
1 edit | Re: Blast 16/2 running at half speed I am in San Francisco and am having the same problem as both of you guys. I live off of Paul Ave. and my slowdowns started on the 15th. I've been around 5 mbps since then. I sometimes spike to 10 during the test but it isnt the 16 i should be getting. Doesnt matter what time of day. Are you guys close to me? Wondering if it is our node that is trashed.
It started out great at 14/15 mbps and has slid downhill since.
Thanks. . . | |
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| | | iamdak
join:2008-03-29
San Francisco, CA | Re: Blast 16/2 running at half speed I'm in Ingleside; has anyone in the SF area tried Astound service? | |
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just me 2
@comcast.net | Do you have cable services or just internet ? If just internet then 8 mb is the blast package . You should only get 16 with at least basic cable. | |
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| cabledsl
join:2001-01-05
San Francisco, CA
2 edits | Re: Blast 16/2 running at half speed Actually my speed tests here at DSLReports are slower than those over at speedtest.net. My speed registers in the 3mbps range here but 6mpbs over there.
Looks like I need to move to Marin.
has anyone heard any rumors about any network problems here in this neck of the woods? So disapointing that people South of here have 30mbps spurts and people north of us have 18mpbs. Hopefully this issue resolves itself soon. . .
Steve | |
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justjoe
@comcast.net
| I have blast and plugging directly into the modem i get 31,000kbps down but when plugged into my linsksys WRT54Gv5 (latest firmware 1.02.5) I get 12,000 kbps consistently.
Have 3 computers, 2pc 1 mac - all get the same /similar results. my bottleneck appears to be the linksys.
Any suggestions on what to put in as a replacement for a Firewall / NAT device that won't choke on 31Mbps ? | |
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gloc
@comcast.net | What is the Rwin setting for the new speed? | |
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Johkal
Cool Cat
Premium,MVM
join:2002-11-13
Happy Valley
clubs: | Re: Blast 16/2 running at half speed Rwin is by opinion. I recommend 128480 as a minimum. | |
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Durguard
@comcast.net | URL=http://www.speedtest.net]  [/URL]
Good up speed but one half of down. No matter what test, I max out at about 6000kps. So this Blast? | |
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herman
@comcast.net
| Re: Blast 16/2 running at half speed i get about 5/6mbdown from dslreports and 6/7mb down from speedtests and also about 6/7 from speakeasy.net ... I am in the glen park area in san francisco.. the conection speed isnt bad, it is just not what i paid for and I also get frequent disconnects... which is very annoying.. and a lot of webpages take forever to load.. I have a 6mb connection at my other house and its running much better than this one is. | |
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justjoe
@comcast.net | i've tested again this time on the wired port from the linksys not the wifi ports and now am getting 31MB down.
looks like the linksys wifi can't keep up despite being a 802.11g wireless router. | |
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cabledsl
join:2001-01-05
San Francisco, CA
| The latest in my saga. . .
I called comcast tonight because I am still speedtesting @ about 4000mbps. Some of my downloads get up to about 400kb/sec and then die down to about 200. Most of them stay around 200 or so.
I called Comcast and told them that, since I am getting 1/6th of my advertised speed I should only have to pay 1/6 of my bill. I guess they didn't think I was funny and decided to counter with their own comedy. The guy on the phone blamed my slow service on earthquakes and sounded amazed when I told him I had blast which was rated at 16mbps. Sounded like he hadn't heard of it before. I told him the speeds I was getting and he sounded like I should be happy with that.
Sigh. Anyway, they are going to roll a truck tomorrow to test my wires. . blame the problem and me and end up charging me for the visit. I'll let you know how it goes. | |
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Blast 16/2 running at half speed
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