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mbrainerd
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What does this mean in bold print?

WEB100 Enabled Statistics:

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

running 10s outbound test (client to server) . . . . . 851.87Kb/s

running 10s inbound test (server to client) . . . . . . 2.11Mb/s

------  Client System Details  ------

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

Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_01

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

Cable modem/DSL/T1 link found.

Link set to Full Duplex mode

No network congestion discovered.

Good network cable(s) found

Normal duplex operation found.

Web100 reports the Round trip time = 116.10 msec; the Packet size = 1460 Bytes; and

No packet loss was observed.

This connection is receiver limited 91.93% of the time.

Increasing the current receive buffer (0 KB) will improve performance enclosed is cablenut settings to.

This connection is network limited 7.53% of the time.

    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: OFF

Packet size is preserved End-to-End

Server IP addresses are preserved End-to-End

Information: Network Address Translation (NAT) box is modifying the Client's IP address

Server says [66.117.105.5] but Client says [172.25.25.2]

WEB100 Kernel Variables:

Client: localhost/127.0.0.1

AckPktsIn: 907

AckPktsOut: 0

BytesRetrans: 0

CongAvoid: 0

CongestionOverCount: 0

CongestionSignals: 0

CountRTT: 907

CurCwnd: 32120

CurMSS: 1460

CurRTO: 316

CurRwinRcvd: 0

CurRwinSent: 5840

CurSsthresh: 2147483647

DSACKDups: 0

DataBytesIn: 0

DataBytesOut: 2749124

DataPktsIn: 0

DataPktsOut: 1818

DupAcksIn: 0

ECNEnabled: 0

FastRetran: 0

MaxCwnd: 32120

MaxMSS: 1460

MaxRTO: 325

MaxRTT: 197

MaxRwinRcvd: 0

MaxRwinSent: 5840

MaxSsthresh: 0

MinMSS: 1460

MinRTO: 302

MinRTT: 99

MinRwinRcvd: 2147483647

MinRwinSent: 5840

NagleEnabled: 1

OtherReductions: 1

PktsIn: 907

PktsOut: 1818

PktsRetrans: 0

X_Rcvbuf: 87380

SACKEnabled: 3

SACKsRcvd: 3

SendStall: 0

SlowStart: 21

SampleRTT: 109

SmoothedRTT: 113

X_Sndbuf: 81840

SndLimTimeRwin: 9312185

SndLimTimeCwnd: 730464

SndLimTimeSender: 55851

SndLimTransRwin: 2

SndLimTransCwnd: 7

SndLimTransSender: 6

SndLimBytesRwin: 2651014

SndLimBytesCwnd: 75700

SndLimBytesSender: 22410

SubsequentTimeouts: 0

SumRTT: 103393

Timeouts: 0

TimestampsEnabled: 0

WinScaleRcvd: 2147483647

WinScaleSent: 2147483647

DupAcksOut: 0

StartTimeUsec: 867901

Duration: 10103278

c2sData: 2

c2sAck: 2

s2cData: 2

s2cAck: 3

Checking for mismatch condition

(cwndtime > .3) [0.07>.3], (MaxSsthresh > 0) [0>0],

(PktsRetrans/sec > 2) [0>2], (estimate > 2) [97.71>2]

Checking for mismatch on uplink

(speed > 50 [2.17>50], (xmitspeed < 5) [0.84<5]

(rwintime > .9) [0.92>.9], (loss < .01) [1.0E<.01]

Checking for excessive errors condition

(loss/sec > .15) [1.0E>.15], (cwndtime > .6) [0.07>.6],

(loss < .01) [1.0E<.01], (MaxSsthresh > 0) [0>0]

Checking for 10 Mbps link

(speed < 9.5) [2.17<9.5], (speed > 3.0) [2.17>3.0]

(xmitspeed < 9.5) [0.84<9.5] (loss < .01) [1.0E<.01], (link > 0) [100>0]

Checking for Wireless link

(sendtime = 0) [0.00=0], (speed < 5) [2.17<5]

(Estimate > 50 [97.71>50], (Rwintime > 90) [0.92>.90]

(RwinTrans/CwndTrans = 1) [2/7=1], (link > 0) [100>0]

Checking for DSL/Cable Modem link

(speed < 2) [2.17<2], (SndLimTransSender = 0) [6=0]

(SendTime = 0) [0.005530623359904937=0], (link > 0) [100>0]

Checking for half-duplex condition

(rwintime > .95) [0.92>.95], (RwinTrans/sec > 30) [0.20>30],

(SenderTrans/sec > 30) [0.60>30], OR (link <= 10) [100<=10]

Checking for congestion

(cwndtime > .02) [0.07>.02], (mismatch = 0) [0=0]

(MaxSsthresh > 0) [0>0]

bw = 97.71 based on packet size = 11Kbits, RTT = 113.99msec, and loss = 1.0E-6

The theoretical network limit is 97.71 Mbps

The transmit buffer (79.0 KByte) limits the application to 5.47 Mbps

Your receive buffer (0 KByte) limits the application to 0 Mbps

The network based flow control limits the application to 2.14 Mbps

Client Data reports link is 'T1', Client Acks report link is 'T1'

Server Data reports link is 'T1', Server Acks report link is 'Ethernet'

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hey mbrainerd :)

i have no idea why it dosent report your current receive buffer as (0 KB)

this is my results

WEB100 Kernel Variables:

Client: localhost/127.0.0.1

AckPktsIn: 3979

AckPktsOut: 0

BytesRetrans: 1460

CongAvoid: 3701

CongestionOverCount: 0

CongestionSignals: 1

CountRTT: 3975

CurCwnd: 378140

CurMSS: 1460

CurRTO: 514

CurRwinRcvd: 510696

CurRwinSent: 17920

CurSsthresh: 200020

DSACKDups: 0

DataBytesIn: 0

DataBytesOut: 11652260

DataPktsIn: 0

DataPktsOut: 7981

DupAcksIn: 3

ECNEnabled: 0

FastRetran: 1

MaxCwnd: 378140

MaxMSS: 1460

MaxRTO: 515

MaxRTT: 316

MaxRwinRcvd: 510696

MaxRwinSent: 17920

MaxSsthresh: 200020

MinMSS: 1460

MinRTO: 283

MinRTT: 83

MinRwinRcvd: 63837

MinRwinSent: 17920

NagleEnabled: 1

OtherReductions: 33

PktsIn: 3979

PktsOut: 7981

PktsRetrans: 1

X_Rcvbuf: 65536

RcvWinScale: 7

SACKEnabled: 3

SACKsRcvd: 84

SendStall: 0

SlowStart: 164

SampleRTT: 314

SmoothedRTT: 314

X_Sndbuf: 65536

SndWinScale: 3

SndLimTimeRwin: 0

SndLimTimeCwnd: 10006640

SndLimTimeSender: 8979

SndLimTransRwin: 0

SndLimTransCwnd: 1

SndLimTransSender: 1

SndLimBytesRwin: 0

SndLimBytesCwnd: 11655180

SndLimBytesSender: 0

SubsequentTimeouts: 0

SumRTT: 939082

Timeouts: 0

TimestampsEnabled: 0

WinScaleRcvd: 3

WinScaleSent: 7

DupAcksOut: 0

StartTimeUsec: 525273

Duration: 10016374

c2sData: 4

c2sAck: 3

s2cData: 3

s2cAck: 3

half_duplex: 1

link: 0

congestion: 1

bad_cable: 0

mismatch: 0

spd: -1.99

bw: 4.21

loss: 0.000125298

avgrtt: 236.25

waitsec: 0.00

timesec: 10.00

order: 0.0008

rwintime: 0.0000

sendtime: 0.0009

cwndtime: 0.9991

rwin: 3.8963

swin: 64.0000

cwin: 2.8850

rttsec: 0.236247

Sndbuf: 8388608

Checking for mismatch condition

(cwndtime > .3) [0.99>.3], (MaxSsthresh > 0) [200020>0],

(PktsRetrans/sec > 2) [0.1>2], (estimate > 2) [4.21>2]

Checking for mismatch on uplink

(speed > 50 [-1.99>50], (xmitspeed < 5) [9.38<5]

(rwintime > .9) [0>.9], (loss < .01) [1.25<.01]

Checking for excessive errors condition

(loss/sec > .15) [1.25>.15], (cwndtime > .6) [0.99>.6],

(loss < .01) [1.25<.01], (MaxSsthresh > 0) [200020>0]

Checking for 10 Mbps link

(speed < 9.5) [-1.99<9.5], (speed > 3.0) [-1.99>3.0]

(xmitspeed < 9.5) [9.38<9.5] (loss < .01) [1.25<.01], (mylink > 0) [45.0>0]

Checking for Wireless link

(sendtime = 0) [9.0E=0], (speed < 5) [-1.99<5]

(Estimate > 50 [4.21>50], (Rwintime > 90) [0>.90]

(RwinTrans/CwndTrans = 1) [0/1=1], (mylink > 0) [45.0>0]

Checking for DSL/Cable Modem link

(speed < 2) [-1.99<2], (SndLimTransSender = 0) [1=0]

(SendTime = 0) [9.0E-4=0], (mylink > 0) [45.0>0]

Checking for half-duplex condition

(rwintime > .95) [0>.95], (RwinTrans/sec > 30) [0>30],

(SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [45.0<=10]

Checking for congestion

(cwndtime > .02) [0.99>.02], (mismatch = 0) [0=0]

(MaxSsthresh > 0) [200020>0]

estimate = 4.21 based on packet size = 11Kbits, RTT = 236.25msec, and loss = 1.25298E-4

The theoretical network limit is 4.21 Mbps

The NDT server has a 8192.0 KByte buffer which limits the throughput to 270.90 Mbps

Your PC/Workstation has a 498.0 KByte buffer which limits the throughput to 16.49 Mbps

The network based flow control limits the throughput to 12.21 Mbps

Client Data reports link is 'T3', Client Acks report link is 'Ethernet'

Server Data reports link is 'Ethernet', Server Acks report link is 'Ethernet'

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

45 Mbps T3/DS3 link found.

Link set to Half Duplex mode

Information: throughput is limited by other network traffic.

Good network cable(s) found

Normal duplex operation found.

Web100 reports the Round trip time = 236.25 msec; the Packet size = 1460 Bytes; and

There were 1 packets retransmitted, 3 duplicate acks received, and 84 SACK blocks received

The connection was idle 0 seconds (0%) of the time

This connection is network limited 99.91% of the time.

  Contact your local network administrator to report a network problem

    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

My receivebuffer is 510699 but test reportin it as 498000

My NIC and ISP Switch run in 10 Mbps full duplex and test reporting a 45 Mbps T3/DS3 link in Half Duplex mode

it dosent seem accurate  :roll:

Click Report Problems and send them a email and ask

btw  the recievebuffer is DefaultRecivewindow and TcpWindowsize in Cablenut

VanBuren :)

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Hi mbrainerd : Is this the result of the NDT test done when you do the first test each time you go to the site.I have found the first test can give some wrong results.Try to do it a second & third time & see if it stays the same.I have never received the results you put in bold type.Most of the time increasing the rwin will change the receive buffer stats this test reports.I am not saying to change your receive buffer use the setting that works best for you.Just if you increase it this test will change the amount of limitation it reports.Test your rwin with the TCP Analyzer.Use window scaling & try 513920 for rwin This should give you an unscaled receive window of 64240. See if this changes the test results of the NDT test if you like to experiment.you can always change back to your origional settings.

  https://www.speedguide.net/index.php  This is the link for the TCP Analyzer.

Post the results if you try this I would like to see them I think other members would too.

  :cool:  Cholla

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Hi mbrainerd : I have win 98 se so it  works different than XP.With 98 if you have windoe scaling off max rwin is 65535 no matter how high it is set.With scaling on it can be set higher using a multiple of 1460 the MSS.Like 513920 Then the  unscaled receive window shows 64240.This is on win 98 se.I just saw you had window scaling off in the NDT test & thought that might be the reason for the results you got.Since the test showed your RWIN to be 0.your cablenut settings show it to be 30660.The test should show that but it doesn't. So for some reason it is not detecting your Rwin. would like to know why to. I have turned in a problem report to this test site on a test I did one time they were very good about responding.You might try that & see what they say.  Cholla

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