raydirector Posted March 28, 2005 CID Share Posted March 28, 2005 We are subscribed to Comcasts 6600/768 service and it was working fine right after the upgrades, but a few weeks later I can't get anything over 4000. Any help would be appreciated. Would a custom cablenut config help out or is this indicative of a larger problem? Anyway, here are my test results: :::.. Download Stats ..::: Connection is:: 3046 Kbps about 3 Mbps (tested with 5983 kB) Download Speed is:: 372 kB/s Tested From:: http://www.testmy.net/ Test Time:: Mon Mar 28 2005 16:03:24 GMT-0500 (Eastern Standard Time) Bottom Line:: 54X faster than 56K 1MB download in 2.75 sec Diagnosis: 90% + Okay : running at 94.1 % of your hosts average (Comcast.net) Validation Link:: https://testmy.net/stats/id-J8RL6ZPXT _______________ :::.. Upload Stats ..::: Connection is:: 687 Kbps about 0.7 Mbps (tested with 579 kB) Upload Speed is:: 84 kB/s Tested From:: http://www.testmy.net/ Test Time:: Mon Mar 28 2005 16:04:32 GMT-0500 (Eastern Standard Time) Bottom Line:: 12X faster than 56K 1MB upload in 12.19 sec Diagnosis: Awesome! 20% + : 104.46 % faster than the average for host (Comcast.net) Validation Link:: https://testmy.net/stats/id-CSYJGL7O4 _____________ TCP/Web100 Network Diagnostic Tool v5.3.3d click START to begin Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 678.38Kb/s running 10s inbound test (server to client) . . . . . . 2.84Mb/s Your PC is connected to a Cable/DSL modem WEB100 Kernel Variables: Client: localhost/127.0.0.1 AckPktsIn: 1244 AckPktsOut: 0 BytesRetrans: 0 CongAvoid: 0 CongestionOverCount: 0 CongestionSignals: 0 CountRTT: 1244 CurCwnd: 65700 CurMSS: 1460 CurRTO: 380 CurRwinRcvd: 65535 CurRwinSent: 5840 CurSsthresh: 2147483647 DSACKDups: 0 DataBytesIn: 0 DataBytesOut: 3568240 DataPktsIn: 0 DataPktsOut: 2444 DupAcksIn: 0 ECNEnabled: 0 FastRetran: 0 MaxCwnd: 65700 MaxMSS: 1460 MaxRTO: 410 MaxRTT: 210 MaxRwinRcvd: 65535 MaxRwinSent: 5840 MaxSsthresh: 0 MinMSS: 1460 MinRTO: 280 MinRTT: 80 MinRwinRcvd: 65535 MinRwinSent: 5840 NagleEnabled: 1 OtherReductions: 0 PktsIn: 1244 PktsOut: 2444 PktsRetrans: 0 X_Rcvbuf: 103424 RcvWinScale: 2147483647 SACKEnabled: 3 SACKsRcvd: 0 SendStall: 0 SlowStart: 43 SampleRTT: 180 SmoothedRTT: 170 X_Sndbuf: 103424 SndWinScale: 2147483647 SndLimTimeRwin: 9200665 SndLimTimeCwnd: 844855 SndLimTimeSender: 2781 SndLimTransRwin: 1 SndLimTransCwnd: 1 SndLimTransSender: 1 SndLimBytesRwin: 3382820 SndLimBytesCwnd: 185420 SndLimBytesSender: 0 SubsequentTimeouts: 0 SumRTT: 215570 Timeouts: 0 TimestampsEnabled: 0 WinScaleRcvd: 2147483647 WinScaleSent: 2147483647 DupAcksOut: 0 StartTimeUsec: 417714 Duration: 10053821 c2sData: 2 c2sAck: 2 s2cData: 9 s2cAck: 3 half_duplex: 0 link: 100 congestion: 0 bad_cable: 0 mismatch: 0 spd: 0.00 bw: 64.28 loss: 0.000001000 avgrtt: 173.29 waitsec: 0.00 timesec: 10.00 order: 0.0000 rwintime: 0.9156 sendtime: 0.0003 cwndtime: 0.0841 rwin: 0.5000 swin: 0.7891 cwin: 0.5013 rttsec: 0.173288 Sndbuf: 103424 aspd: 4.36205 Checking for mismatch on uplink (speed > 50 [0>50], (xmitspeed < 5) [0.67<5] (rwintime > .9) [0.91>.9], (loss < .01) [1.0E<.01] Checking for excessive errors condition (loss/sec > .15) [1.0E>.15], (cwndtime > .6) [0.08>.6], (loss < .01) [1.0E<.01], (MaxSsthresh > 0) [0>0] Checking for 10 Mbps link (speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0] (xmitspeed < 9.5) [0.67<9.5] (loss < .01) [1.0E<.01], (mylink > 0) [3.0>0] Checking for Wireless link (sendtime = 0) [3.0E=0], (speed < 5) [0<5] (Estimate > 50 [64.28>50], (Rwintime > 90) [0.91>.90] (RwinTrans/CwndTrans = 1) [1/1=1], (mylink > 0) [3.0>0] Checking for DSL/Cable Modem link (speed < 2) [0<2], (SndLimTransSender = 0) [1=0] (SendTime = 0) [3.0E-4=0], (mylink > 0) [3.0>0] Checking for half-duplex condition (rwintime > .95) [0.91>.95], (RwinTrans/sec > 30) [0.1>30], (SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [3.0<=10] Checking for congestion (cwndtime > .02) [0.08>.02], (mismatch = 0) [0=0] (MaxSsthresh > 0) [0>0] estimate = 64.28 based on packet size = 11Kbits, RTT = 173.29msec, and loss = 1.0E-6 The theoretical network limit is 64.28 Mbps The NDT server has a 101.0 KByte buffer which limits the throughput to 4.55 Mbps Your PC/Workstation has a 63.0 KByte buffer which limits the throughput to 2.88 Mbps The network based flow control limits the throughput to 2.89 Mbps Client Data reports link is 'T1', Client Acks report link is 'T1' Server Data reports link is '10 Gig', Server Acks report link is 'Ethernet' _________________ Microsoft Windows XP [Version 5.1.2600] © Copyright 1985-2001 Microsoft Corp. C:Documents and SettingsOwner>tracert testmy.net Tracing route to testmy.net [67.19.36.6] over a maximum of 30 hops: 1 1 ms 1 ms 1 ms 192.168.0.1 2 31 ms 19 ms 13 ms 10.239.12.1 3 17 ms 11 ms 12 ms c-66-56-22-25.hsd1.ga.Comcast.net [66.56.22.25] 4 15 ms 13 ms 13 ms c-66-56-23-46.hsd1.ga.Comcast.net [66.56.23.46] 5 18 ms 12 ms 18 ms 12.124.64.21 6 19 ms 19 ms 21 ms tbr2-p013801.attga.ip.att.net [12.123.21.101] 7 42 ms 33 ms 48 ms tbr1-cl1.dlstx.ip.att.net [12.122.2.89] 8 29 ms 34 ms 32 ms gar1-p360.dlrtx.ip.att.net [12.123.196.101] 9 49 ms 33 ms 33 ms 12.119.136.14 10 72 ms 33 ms 52 ms dist-vlan32.dsr3-1.dllstx3.theplanet.com [70.85. 127.61] 11 35 ms 66 ms 30 ms dist-vlan-42.dsr2-2.dllstx4.theplanet.com [70.85 .127.91] 12 30 ms 33 ms 41 ms gig1-0-1.tp-car9-2.dllstx4.theplanet.com [67.18. 116.70] 13 36 ms 32 ms 29 ms 6.67-19-36.reverse.theplanet.com [67.19.36.6] Trace complete. ____________ C:Documents and SettingsOwner>pathping testmy.net Tracing route to testmy.net [67.19.36.6] over a maximum of 30 hops: 0 arnor.hsd1.ga.Comcast.net. [192.168.0.101] 1 192.168.0.1 2 10.239.12.1 3 c-66-56-22-25.hsd1.ga.Comcast.net [66.56.22.25] 4 c-66-56-23-46.hsd1.ga.Comcast.net [66.56.23.46] 5 12.124.64.21 6 tbr2-p013801.attga.ip.att.net [12.123.21.101] 7 tbr1-cl1.dlstx.ip.att.net [12.122.2.89] 8 gar1-p360.dlrtx.ip.att.net [12.123.196.101] 9 12.119.136.14 10 dist-vlan31.dsr3-2.dllstx3.theplanet.com [70.85.127.30] 11 dist-vlan41.dsr2-1.dllstx4.theplanet.com [70.85.127.83] 12 gig1-0-1.tp-car9-2.dllstx4.theplanet.com [67.18.116.70] 13 6.67-19-36.reverse.theplanet.com [67.19.36.6] Computing statistics for 325 seconds... Source to Here This Node/Link Hop RTT Lost/Sent = Pct Lost/Sent = Pct Address 0 arnor.hsd1.ga.Comcast.net. [192.16 8.0.101] 0/ 100 = 0% | 1 1ms 0/ 100 = 0% 0/ 100 = 0% 192.168.0.1 0/ 100 = 0% | 2 23ms 0/ 100 = 0% 0/ 100 = 0% 10.239.12.1 0/ 100 = 0% | 3 23ms 0/ 100 = 0% 0/ 100 = 0% c-66-56-22-25.hsd1.ga.Comcast.net [66.56.22.25] 0/ 100 = 0% | 4 24ms 0/ 100 = 0% 0/ 100 = 0% c-66-56-23-46.hsd1.ga.Comcast.net [66.56.23.46] 0/ 100 = 0% | 5 24ms 0/ 100 = 0% 0/ 100 = 0% 12.124.64.21 0/ 100 = 0% | 6 --- 100/ 100 =100% 100/ 100 =100% tbr2-p013801.attga.ip.att.net [12. 123.21.101] 0/ 100 = 0% | 7 --- 100/ 100 =100% 100/ 100 =100% tbr1-cl1.dlstx.ip.att.net [12.122. 2.89] 0/ 100 = 0% | 8 --- 100/ 100 =100% 100/ 100 =100% gar1-p360.dlrtx.ip.att.net [12.123 .196.101] 0/ 100 = 0% | 9 44ms 67/ 100 = 67% 67/ 100 = 67% 12.119.136.14 0/ 100 = 0% | 10 --- 100/ 100 =100% 100/ 100 =100% dist-vlan31.dsr3-2.dllstx3.theplan et.com [70.85.127.30] 0/ 100 = 0% | 11 --- 100/ 100 =100% 100/ 100 =100% dist-vlan41.dsr2-1.dllstx4.theplan et.com [70.85.127.83] 0/ 100 = 0% | 12 40ms 0/ 100 = 0% 0/ 100 = 0% gig1-0-1.tp-car9-2.dllstx4.theplan et.com [67.18.116.70] 0/ 100 = 0% | 13 38ms 0/ 100 = 0% 0/ 100 = 0% 6.67-19-36.reverse.theplanet.com [ 67.19.36.6] Trace complete. 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peepnklown Posted March 28, 2005 CID Share Posted March 28, 2005 I would do the following; hopefully you are somewhat computer savvy. This should help tweak your Windows XP SP2 https://www.speedguide.net/read_articles.php?id=1497 This should help tweak your Windows XP in general https://www.speedguide.net/downloads.php This should further help (thanks to VAN) https://testmy.net/topic-2097 Quote Link to comment Share on other sites More sharing options...
raydirector Posted March 28, 2005 Author CID Share Posted March 28, 2005 Thanks for the info, and I would consider myself somewhat savvy. I don't want to say I'm the bees' knees and sound like I'm tooting my own horn. I have already run that first optimization. A few weeks ago is when I did it, I think. Usually I read all I can find before posting. If someone can give me some pointers on how to create my own cablenut tweak I'll do it myself. I just need to know how to make sense of the data from all the tests. But again, thanks, I really do appreciate any attempts to help. Quote Link to comment Share on other sites More sharing options...
Dittoz Posted March 29, 2005 CID Share Posted March 29, 2005 The problem you've described is exactly my problem. What area are you in? You might want to check out the thread I started, maybe something in that might be able to help you out. http://www.testmy.net/topic-3779 Quote Link to comment Share on other sites More sharing options...
raydirector Posted March 29, 2005 Author CID Share Posted March 29, 2005 I am located in Atlanta, GA. Quote Link to comment Share on other sites More sharing options...
Graywolfie Posted March 29, 2005 CID Share Posted March 29, 2005 I've been following this forum and it is very informative. I figured I'd put my two cents worth into this thread. I've personnally been through so many tweaks/settings/adjustments I should be spinning. I also have the 6000/768 for about one week. I upgraded because I found out you could get it here in the forum. I live in the Greensburg area of PA just east of Pittsburgh. The people at the local Comcast office weren't hardly aware that there was even a faster speed available until I asked about it and they checked into it. They said they never had anyone ask about it. Go figure. Anyway, I exchanged my old RCA modem of 5 years for a new WebStar 2100. I called Comcast and had my account upgraded and then connected with a tech person and all he said for me to do was cycle the modem, which I knew, and poof....everything would work. Well, that's all fine and dandy, and yes, I have great upload speed always above 700 everytime I check. The download however is really goofy. Like I said, I tried everything suggested, settings, eliminating the router from the mix, swap cables, splitters, blah, blah blah.... Still the same basic result. BUT, I read somewhere around here that if you change the MAC address on the WAN side of the router (LinksSYS BEFSR41) and then reboot the modem it would assign a new IP and see what happens. Fortunately I have a half dozen or so NIC's lying around. So I tried each ones MAC address, methodically. The results are interesting. Some IP addresses give me dismal results, under 2000 down (upload is always high), a few give me 2800 to 4000, and one gives me mid 4000 consistantly. Interesting eh? Actually out of everything I tried doing this gave me the most improved result. Unfortunately, I have yet to reach the 6000 everyone talks about. If I return back to any previous IP's (the lease is still valid so I get the same IP) sure enough the speed returns to what I got for that IP. I've tried the process 3 different days with all results the same. So, I picked the best one and that is what I am using at the moment. My thoughts on ppl who are going gang busters and then see a drop off... could it be that their IP lease expires... a new IP is assigned and thus the drop??? Therefore, it seems to me that the lack of speed has little to do with the routers, computers, settings, modems inside anyone's humble abode. It seems the trouble is "out there in Comcast Land" and until they solve it we are doing nothing but spinning our wheels is some cases. It seems the cable system has been built in so many stages, coax, fiber etc and added so many features, analog, digital, telephone service, internet.... that it is probably one big confusing mess that no one tech person can comprehend. I am by far no expert, just tinkering around like most here for the best speed. I just wish I could get assigned the magical IP that gives the advertised speed. As frustrating as this is, to comfort myself I just think about the old days of AOL and going to make a sandwich while you waited for the computer to yell out "WELCOME!" after dialing 3 numbers a dozen times each....lol. Good Luck! Quote Link to comment Share on other sites More sharing options...
netmasta Posted March 29, 2005 CID Share Posted March 29, 2005 First, the reason you are not getting the higher speeds yet is probably because Comcast is still in the process of upgrading. I'd give it a month or so and see how your speeds are then. Second, any ip address will work with any speed. There no special ip addresses assigned for higher speeds. Quote Link to comment Share on other sites More sharing options...
Dittoz Posted March 29, 2005 CID Share Posted March 29, 2005 I'm not sure on the specifics but Graywolfie is the first person that has put a credible explanation out there on the reason some of us get such great speeds at first, and then bam. Sucko. But I'm not sure on the ip situation. Maybe there is something else that "expires" after a couple of weeks or about a month? Quote Link to comment Share on other sites More sharing options...
Graywolfie Posted March 29, 2005 CID Share Posted March 29, 2005 Second, any ip address will work with any speed. There no special ip addresses assigned for higher speeds. Maybe so netmasta. I am no expert on the subject by any stretch. However, how would you explain this. I can go to speakeasy, pittsburgh and test my speed Quote Link to comment Share on other sites More sharing options...
pitbull481 Posted March 29, 2005 CID Share Posted March 29, 2005 my speeds were doing very good to (also have 6000/768). illinois had the upgrade like 2 months ago. and just last week til now my download speeds just dropped like 2Mb my uplaod is still doing good (averaging 700kb). i call comcast yesterday. i'll be getting a tech in my house in about an 1 hour or 2 Quote Link to comment Share on other sites More sharing options...
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