need help, Comcast conection stalling during download test.

[sst45jeff]

Please have a look and see if you can tell me what might be going on.

I get some better test, but not very often and never close to my cap.

Thanks.

Windows Xp, SP2 installed with patch

Cablenut installed with Van Buren file version 8,  Cable & DSL 10000.ccs

Instaled thes tweaks

Faster page loading

Disable DNS Caching

Increase Buffer

All registry tweaks by Rom Dos for XP

Mcafee Firewall and anti virus turned off.

Ran Spybot and Adware regularly.

Used Ccleaner

Connected through NIC.

Set it to 100mb full duplex for Cable

Updated NIC driver to latest driver.

Uninastalled Lan protocols not used.

Made sure nothing is checked (LAN settings button)

Cleared cookies, temp. files and caches.

Power cycled modem.

New motorolaSB5100 modem.

No router installed during test.

Comcast 8800/1000

Test with Anti virus off.

Always stalls at about 30% & 60% loaded.

:::.. Download Stats ..:::

Connection is:: 3940 Kbps about 3.9 Mbps (tested with 12160 kB)

Download Speed is:: 481 kB/s

Tested From:: https://testmy.net (server2)

Test Time:: Wed Feb 8 10:42:19 PST 2006

Bottom Line:: 70X faster than 56K 1MB download in 2.13 sec

Diagnosis: May need help : running at only 82.74 % of your hosts average (Comcast.net)

Validation Link:: https://testmy.net/stats/id-PMG4YWB13

:::.. Upload Stats ..:::

Connection is:: 983 Kbps about 1 Mbps (tested with 1013 kB)

Upload Speed is:: 120 kB/s

Tested From:: https://testmy.net (server1)

Test Time:: Wed Feb 8 10:28:57 PST 2006

Bottom Line:: 18X faster than 56K 1MB upload in 8.53 sec

Diagnosis: Awesome! 20% + : 184.1 % faster than the average for host (Comcast.net)

Validation Link:: https://testmy.net/stats/id-AWHIPTF3S

Test with Anti virus on.

:::.. Download Stats ..:::

Connection is:: 2228 Kbps about 2.2 Mbps (tested with 2992 kB)

Download Speed is:: 272 kB/s

Tested From:: https://testmy.net (server2)

Test Time:: Wed Feb 8 10:43:32 PST 2006

Bottom Line:: 40X faster than 56K 1MB download in 3.76 sec

Diagnosis: May need help : running at only 46.79 % of your hosts average (Comcast.net)

Validation Link:: https://testmy.net/stats/id-XU69SN510

TCP options string = 020405b40103030301010402 MTU = 1500

MTU is fully optimized for broadband. MSS = 1460

Maximum useful data in each packet = 1460, which equals MSS.

Default TCP Receive Window (RWIN) = 513920

RWIN Scaling (RFC1323) = 3 bits (scale factor of 6)

Unscaled TCP Receive Window = 64240

RWIN is a multiple of MSS

Other values for RWIN that might work well with your current MTU/MSS:

256960 (MSS x 44 * scale factor of 4)

128480 (MSS x 44 * scale factor of 2)

64240 (MSS x 44) bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 20556.8 Kbps (2569.6 KBytes/s) @ 200ms

Your TCP Window limits you to: 8222.72 Kbps (1027.84 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON Time to live left = 53 hops

TTL value is ok. Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 00100000 (32)

Precedence (priority) = 001 (priority)

Delay = 0 (normal delay)

Throughput = 0 (normal throughput)

Reliability = 0 (normal reliability)

Cost = 0 (normal cost)

Check bit = 0 (correct, 8th checking bit must be zero)

DiffServ (RFC 2474) = CS1 001000 ( - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.

click START to re-test

Another client is currently being served, your test will begin within 45 seconds

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 1.01Mb/s

running 10s inbound test (server to client) . . . . . . 7.99Mb/s

Your PC is connected to a Cable/DSL modem

Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex

click START to re-testrunning 

OS data: Name = Windows XP, Architecture = x86, Version = 5.1

Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_06

------  Web100 Detailed Analysis  ------

Cable modem/DSL/T1 link found.

Link set to Full Duplex mode

No network congestion discovered.

Good network cable(s) found

Alarm: Duplex mismatch condition found:  Host set to Full and Switch set to Half duplexD

------  Web100 Detailed Analysis  ------

Cable modem/DSL/T1 link found.

Link set to Full Duplex mode

No network congestion discovered.

Good network cable(s) found

Alarm: Duplex mismatch condition found:  Host set to Full and Switch set to Half duplexD

Web100 reports the Round trip time = 44.54 msec; the Packet size = 1460 Bytes; and

There were 220 packets retransmitted, 237 duplicate acks received, and 183 SACK blocks received

The connection stalled 3 times due to packet loss

The connection was idle 0.75 seconds (7.5%) of the time

This connection is network limited 99.97% of the time. (what is this?)

Web100 reports TCP negotiated the optional Performance Settings to:

RFC 2018 Selective Acknowledgment: ON

RFC 896 Nagle Algorithm: ON

RFC 3168 Explicit Congestion Notification: OFF

RFC 1323 Time Stamping: OFF

RFC 1323 Window Scaling: ON

Packet size is preserved End-to-End

Server IP addresses are preserved End-to-End

Client IP addresses are preserved End-to-End

The current date is: Wed 02/08/2006

The current time is:  9:40:02.04

Microsoft Windows XP [Version 5.1.2600]

Pinging testmy.net [67.18.179.85] with 32 bytes of data:

Reply from 67.18.179.85: bytes=32 time=65ms TTL=50

Reply from 67.18.179.85: bytes=32 time=64ms TTL=50

Reply from 67.18.179.85: bytes=32 time=66ms TTL=50

Reply from 67.18.179.85: bytes=32 time=64ms TTL=50

Reply from 67.18.179.85: bytes=32 time=89ms TTL=50

Reply from 67.18.179.85: bytes=32 time=64ms TTL=50

Reply from 67.18.179.85: bytes=32 time=66ms TTL=50

Reply from 67.18.179.85: bytes=32 time=70ms TTL=50

Reply from 67.18.179.85: bytes=32 time=84ms TTL=50

Reply from 67.18.179.85: bytes=32 time=64ms TTL=50

Reply from 67.18.179.85: bytes=32 time=88ms TTL=50

Reply from 67.18.179.85: bytes=32 time=65ms TTL=50

Ping statistics for 67.18.179.85:

    Packets: Sent = 12, Received = 12, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 64ms, Maximum = 89ms, Average = 70ms

Ping Complete.

Tracing route to testmy.net [67.18.179.85]

over a maximum of 30 hops:

  1     *        *        *     Request timed out.

  2    12 ms     7 ms     9 ms  68.86.99.101

  3     8 ms     9 ms    26 ms  68.86.96.13

  4    15 ms    10 ms    11 ms  68.86.96.10

  5    10 ms     9 ms    28 ms  12.117.243.13

  6    69 ms    64 ms    85 ms  12.122.81.6

  7    68 ms    68 ms    69 ms  tbr2-cl10.sffca.ip.att.net [12.122.12.113]

  8    65 ms    64 ms    83 ms  tbr1-cl30.sffca.ip.att.net [12.122.9.137]

  9    70 ms    75 ms    68 ms  tbr1-cl3.la2ca.ip.att.net [12.122.10.26]

10    66 ms    67 ms    67 ms  tbr1-cl20.dlstx.ip.att.net [12.122.10.49]

11    68 ms    68 ms    67 ms  12.122.82.37

12    66 ms    91 ms    67 ms  12.119.136.14

13    65 ms    72 ms    69 ms  vl31.dsr02.dllstx3.theplanet.com [70.85.127.30]

14    65 ms   225 ms    65 ms  vl42.dsr02.dllstx4.theplanet.com [70.85.127.91]

15    65 ms    64 ms    71 ms  gi1-0-2.car17.dllstx4.theplanet.com [67.18.116.85]

16    63 ms    65 ms    64 ms  85.67-18-179.reverse.theplanet.com [67.18.179.85]

Trace complete.

[TimPawlak]

Hi, I had the same problem, I installed slower Cablenut settings because it was trying to get too much from my internet connection. After I uninstalled the old settings and installed the new ones, it worked wayyy better...

Try that and tell me if it works.

Thanks, Tim

[sst45jeff]

Hi, I had the same problem, I installed slower Cablenut settings because it was trying to get too much from my internet connection. After I uninstalled the old settings and installed the new ones, it worked wayyy better...

Try that and tell me if it works.

Thanks, Tim

This file (OOL 10000 1000.ccs from the cablenut files - MSS1460 XP cable files )seems to work the best as far as posting the highest speeds and not having the stalling when testing.

Still not close to the cap though.

:::.. Download Stats ..:::

Connection is:: 6819 Kbps about 6.8 Mbps (tested with 5983 kB)

Download Speed is:: 832 kB/s

Tested From:: https://testmy.net (server2)

Test Time:: Wed Feb 8 13:58:43 PST 2006

Bottom Line:: 122X faster than 56K 1MB download in 1.23 sec

Diagnosis: Awesome! 20% + : 43.17 % faster than the average for host (comcast.net)

Validation Link:: https://testmy.net/stats/id-FNUBRPZ2Q

[trogers]

Try this ccs file.

[trogers]

Also, you have to reconfig your modem to 'auto' duplex sensing - "Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex"

This is the cause of your 'request times out' in the 1st hop?

[sst45jeff]

Try this ccs file.

this file stalls out bad like some of the others i have tried.

:::.. Download Stats ..:::

Connection is:: 3478 Kbps about 3.5 Mbps (tested with 12160 kB)

Download Speed is:: 425 kB/s

Tested From:: https://testmy.net (server2)

Test Time:: Wed Feb 8 14:21:49 PST 2006

Bottom Line:: 62X faster than 56K 1MB download in 2.41 sec

Diagnosis: May need help : running at only 73.02 % of your hosts average (comcast.net)

Validation Link:: https://testmy.net/stats/id-RBJIW5CLM

[sst45jeff]

Also, you have to reconfig your modem to 'auto' duplex sensing - "Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex"

This is the cause of your 'request times out' in the 1st hop?

Yes i have set my Nic to auto and that is where i have it at present.

I also tried manualy switcing it to Full made no diffrence and i tried manualy switching it to Half duplex no diffrence.

[sst45jeff]

Also, you have to reconfig your modem to 'auto' duplex sensing - "Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex"

This is the cause of your 'request times out' in the 1st hop?

Are you reffering to my modem or my NIC card ?

[trogers]

Sorry, NIC. Read this link:

http://homepage.ntlworld.com/robin.d.h.walker/cmtips/ethernet.html#ethernet

[sst45jeff]

Sorry, NIC. Read this link:

http://homepage.ntlworld.com/robin.d.h.walker/cmtips/ethernet.html#ethernet

I understand what they are saying but it kills my speed when I set the NIC to half duplex 10

:::.. Download Stats ..:::

Connection is:: 3010 Kbps about 3 Mbps (tested with 2992 kB)

Download Speed is:: 367 kB/s

Tested From:: https://testmy.net (server2)

Test Time:: Wed Feb 8 14:46:44 PST 2006

Bottom Line:: 54X faster than 56K 1MB download in 2.79 sec

Diagnosis: May need help : running at only 63.2 % of your hosts average (comcast.net)

Validation Link:: https://testmy.net/stats/id-YGLI90UCK

[trogers]

To get optimum speed, you need to correct the mismatch in duplex setting. I recommend you check the manufacturer's website or call your ISP for assistance.

[sst45jeff]

Sorry, NIC. Read this link:

http://homepage.ntlworld.com/robin.d.h.walker/cmtips/ethernet.html#ethernet

This is what i am getting right now with the NIC auto detecting and it is about as good as it gets and never very often usually alot slower more like 5Mbps.

:::.. Download Stats ..:::

Connection is:: 7728 Kbps about 7.7 Mbps (tested with 12160 kB)

Download Speed is:: 943 kB/s

Tested From:: https://testmy.net (server2)

Test Time:: Wed Feb 8 15:03:05 PST 2006

Bottom Line:: 138X faster than 56K 1MB download in 1.09 sec

Diagnosis: Awesome! 20% + : 62.28 % faster than the average for host (comcast.net)

Validation Link:: https://testmy.net/stats/id-BM5KX0G3I

[trogers]

Test speed results also depend on internet traffic conditions. Usually, I will test my comp's optimum performance at 5-6 am period. But this auto setting is the correct one.But as said in the link on cable modem, some auto setting may not function well, and a force half-duplex setting in both NIC and modem may be needed.

[php]

that duplex mismatch alarm is quite inaccurate...

[sst45jeff]

I tried new Ethernet cable made no diffrence.

[sst45jeff]

that duplex mismatch alarm is quite inaccurate...

I had the same alarm with my old ambit modem and i was told then the same thing by somebody else.

When I was getting the alarm with the new modem and the test was not good I was getting concerned.

[sst45jeff]

Test speed results also depend on internet traffic conditions. Usually, I will test my comp's optimum performance at 5-6 am period. But this auto setting is the correct one.But as said in the link on cable modem, some auto setting may not function well, and a force half-duplex setting in both NIC and modem may be needed.

How do you force the half duplex setting in the modem.

I found where it shows that it is 100 full duplex but not how to change it.

[trogers]

I personally have not done any of these adjustments as mentioned in the link as I am connected directly through a USB modem.

The section that mentioned force setting is here:

"ntl:home 100/120 (Ambit) duplex setting

The ntl:home 100/120 (Ambit) cable modem duplex setting can be configured by the user, by using the web pages at http://192.168.100.1/, user root password root. By default, the cable modem is configured to auto-negotiate its speed and duplex setting to be the same as your ethernet card. If you manually configure an explicit speed and duplex setting in your ethernet card, you should also configure the same one in the cable modem, thus removing auto-negotiation from both ends of the link. The optimal setting is to manually force both the ethernet card and the cable modem to full-duplex, thus avoiding all ethernet collisions, and avoiding any possibility of an auto-negotiation mistake. "

[trogers]

Sorry, I read it wrong as half duplex.

[sst45jeff]

Test speed results also depend on internet traffic conditions. Usually, I will test my comp's optimum performance at 5-6 am period.

Yes I agree that the time of day and the amount of traffic can make a diffrence.

I see though where others on Comcast with the same download tier are getting speeds right up to there caps and some over during the peak internet times of the day.

I am just trying to maximize my conection and cant understand why I cant even get close.

The timing out on the first hop concerns me and the mismatch condition was concerning me. (dont no if this is an actual problem at this point though.)

[sst45jeff]

I personally have not done any of these adjustments as mentioned in the link as I am connected directly through a USB modem.

The section that mentioned force setting is here:

"ntl:home 100/120 (Ambit) duplex setting

The ntl:home 100/120 (Ambit) cable modem duplex setting can be configured by the user, by using the web pages at http://192.168.100.1/, user root password root. By default, the cable modem is configured to auto-negotiate its speed and duplex setting to be the same as your ethernet card. If you manually configure an explicit speed and duplex setting in your ethernet card, you should also configure the same one in the cable modem, thus removing auto-negotiation from both ends of the link. The optimal setting is to manually force both the ethernet card and the cable modem to full-duplex, thus avoiding all ethernet collisions, and avoiding any possibility of an auto-negotiation mistake. "

I read that also but it is for an ambit modem and I cant find how to do it with the mototrola SB5100

[trogers]

Any guide from the manufacturer's website to access the driver of your modem? Until you find the way, set your NIC to auto.

[sst45jeff]

thanks

[TimPawlak]

:::.. Download Stats ..:::

Connection is:: 6819 Kbps about 6.8 Mbps (tested with 5983 kB)

Download Speed is:: 832 kB/s

Tested From:: https://testmy.net (server2)

Test Time:: Wed Feb 8 13:58:43 PST 2006

Bottom Line:: 122X faster than 56K 1MB download in 1.23 sec

Diagnosis: Awesome! 20% + : 43.17 % faster than the average for host (Comcast.net)

Validation Link:: https://testmy.net/stats/id-FNUBRPZ2Q

Hey, thats a great speed though... is youe package 10000/768???

[TimPawlak]

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