Sacrifist Posted February 9, 2006 CID Share Posted February 9, 2006 what is the best .ccs file for a 1.4 meg down speed and a 700 kB/sec up speed for a wireless dsl connection? Quote Link to comment Share on other sites More sharing options...
trogers Posted February 9, 2006 CID Share Posted February 9, 2006 Try and see if this can help. I assume your MTU is 1492. If it is different, then your speed will not be optimum. Quote Link to comment Share on other sites More sharing options...
passthatdutch Posted February 9, 2006 CID Share Posted February 9, 2006 Can someone also look to http://www.testmy.net/forum/index.php?topic=11736.new#new Ty Quote Link to comment Share on other sites More sharing options...
trogers Posted February 9, 2006 CID Share Posted February 9, 2006 passthatdutch, I have messaged you at your original post. Quote Link to comment Share on other sites More sharing options...
Sacrifist Posted February 9, 2006 Author CID Share Posted February 9, 2006 actually after running the speedguide tcp/ip analyzer it says my mtu is 1450. How do I go about changing that? Quote Link to comment Share on other sites More sharing options...
trogers Posted February 10, 2006 CID Share Posted February 10, 2006 Go to this link and download the TCP Optimizer: https://www.speedguide.net/downloads.php Open the TCP Optimizer and do the following: General Settings tab: Custom settings - check Modify All Network Adapters - check network adapter selection - your NIC MTU 1500 TTL - 64 TCP Receive Window -blank MTU Discovery - Yes Black Hole Detect - No Selective Acks - Yes Max Duplicate ACKs - 2 TCP 1323 Options: Windows Scaling - uncheck Timestamps - uncheck Advanced Settings tab: Max Connections per Server - 10 Max Connections per 1.0 Server - 20 LocalPriority - 5 Host Priority - 6 DNSPriority - 7 NetbtPriority - 8 Lan Browsing speedup - optimized QoS: NonBestEffortLimit - 0 ToS: DisableUserTOSSetting - 0 ToS: DefaultTOSValue - 240 MaxNegativeCacheTtl - 0 NetFailureCacheTime - 0 NegativeSOACache Time - 0 LAN Request Buffer Size - 32768 Then select "Apply Changes" and reboot to take effect Then retest with https://www.speedguide.net/analyzer.php to confirm your MTU has changed. Quote Link to comment Share on other sites More sharing options...
Sacrifist Posted February 10, 2006 Author CID Share Posted February 10, 2006 hmm, still at 1450. Im not using any router either Quote Link to comment Share on other sites More sharing options...
trogers Posted February 10, 2006 CID Share Posted February 10, 2006 You can use the feature in TCP Optimizer to locate your largest MTU. Open TCP Optimizer, set MTU to 1500, click 'Largest MTU', then enter a any website address and click 'Start'. Your comp will send out pings and establish your system's largest MTU value. If your largest MTU value is 1450 (as limited by you ISP) then we can make a ccs file for you following this value. Quote Link to comment Share on other sites More sharing options...
Sacrifist Posted February 10, 2006 Author CID Share Posted February 10, 2006 Pinging [69.25.27.171] with 40 bytes ->bytes=40 time=59ms TTL=241 Pinging [69.25.27.171] with 750 bytes ->bytes=750 time=123ms TTL=241 Pinging [69.25.27.171] with 1125 bytes ->bytes=1125 time=82ms TTL=241 Pinging [69.25.27.171] with 1312 bytes ->bytes=1312 time=109ms TTL=241 Pinging [69.25.27.171] with 1406 bytes ->bytes=1406 time=227ms TTL=241 Pinging [69.25.27.171] with 1453 bytes ->IcmpSendEcho(): 0 Pinging [67.18.179.85] with 40 bytes ->bytes=40 time=48ms TTL=50 Pinging [67.18.179.85] with 750 bytes ->bytes=750 time=233ms TTL=50 Pinging [67.18.179.85] with 1125 bytes ->bytes=1125 time=84ms TTL=50 Pinging [67.18.179.85] with 1312 bytes ->bytes=1312 time=83ms TTL=50 Pinging [67.18.179.85] with 1406 bytes ->bytes=1406 time=89ms TTL=50 Pinging [67.18.179.85] with 1453 bytes ->IcmpSendEcho(): 0 this is what it says so what is my largest MTU? I also pinged testmy.net and came up with this Reply from 10.10.49.1: Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Packets:sent = 4, Received = 1, Lost = 3 <75% loss> Approximatel round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms Quote Link to comment Share on other sites More sharing options...
trogers Posted February 10, 2006 CID Share Posted February 10, 2006 Looks like your ISP's router do not respond to the ping and so the test stop without a conclusion. Looks like we have to go by the old-fashion way. call out your DOS black screen and after C: use this command ping -f -l (max value) www.testmy.net Where -l is minus small L and max value is your largest anticipated MTU value minus 28. Say you start with assumed MTU value of 1500, max value is 1500-28 = 1472 If you get a message "Packets need to be fragmented..." Then 1500 is not your largest MTU. Go on pinging with a max value less 1 until you get a proper result like "Reply from XX.XXX.XX.XXX: bytes= ______ time = _____ ms TTL= ___ The bytes value shown + 28 = your largest MTU. Quote Link to comment Share on other sites More sharing options...
Sacrifist Posted February 10, 2006 Author CID Share Posted February 10, 2006 1422 bytes of data: reply from 67.18.179.85: bytes=1422 time=85ms TTL=50 reply from 67.18.179.85: bytes=1422 time=98ms TTL=50 reply from 67.18.179.85: bytes=1422 time=83ms TTL=50 reply from 67.18.179.85: bytes=1422 time=104ms TTL=50 Packets sent = 4, Received = 4, Lost = 0 Approximate round trip times in milli-seconds: Minimum = 83ms, Maximum = 104ms, Average = 92ms So my MTU is 1450 I take it, now what. btw, thanks for everything you have done to help me out, I appreciate it greatly Quote Link to comment Share on other sites More sharing options...
trogers Posted February 10, 2006 CID Share Posted February 10, 2006 Do your speedtests for download and upload at www.testmy.net with the largest file 2992 KB and post. Then go to this TCP Analyzer link and post your result: https://www.speedguide.net/analyzer.php Quote Link to comment Share on other sites More sharing options...
jackyandjoe Posted February 10, 2006 CID Share Posted February 10, 2006 Trogers - what would be the best cablenut file for me?? my MTU is 1500 and my modem is capped for 8.0mbps... I am currently using Cable & DSL 30000.ccs one from vanbuners.. Here are my results from the tcp analizer Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; (none); .NET CLR 1.1.4322) Notes: Read the Analyzer FAQ if the above is not your IP address. 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 = 55 hops TTL value is ok. Timestamps (RFC1323) = OFF Selective Acknowledgements (RFC2018) = ON IP type of service field (RFC1349) = 00000000 (0) what else would you need?? thanks for the help... Quote Link to comment Share on other sites More sharing options...
trogers Posted February 10, 2006 CID Share Posted February 10, 2006 Hi jackyandjoe, You an use the ccs file I posted in: http://www.testmy.net/forum/index.php?topic=11777.0 Quote Link to comment Share on other sites More sharing options...
jackyandjoe Posted February 10, 2006 CID Share Posted February 10, 2006 Thanks Trogers, dled and applied already, here are my results now from the tcp analizer, and also the dl test,, please let me know if i should do anything else, as you can see is not even reaching 4 mbps although it did get better now with that file thank you... Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; (none); .NET CLR 1.1.4322) Notes: Read the Analyzer FAQ if the above is not your IP address. TCP options string = 020405b40103030201010402 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) = 256960 RWIN Scaling (RFC1323) = 2 bits (scale factor of 4) Unscaled TCP Receive Window = 64240 RWIN is a multiple of MSS Other values for RWIN that might work well with your current MTU/MSS: 513920 (MSS x 44 * scale factor of 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: 10278.4 kbps (1284.8 KBytes/s) @ 200ms Your TCP Window limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms MTU Discovery (RFC1191) = ON Time to live left = 55 hops TTL value is ok. Timestamps (RFC1323) = OFF Selective Acknowledgements (RFC2018) = ON IP type of service field (RFC1349) = 00000000 (0) __________________________________________ :::.. Download Stats ..::: Connection is:: 3690 Kbps about 3.7 Mbps (tested with 2992 kB) Download Speed is:: 450 kB/s Tested From:: https://testmy.net (server1) Test Time:: Sat Feb 11 12:53:38 UTC-0400 2006 Bottom Line:: 66X faster than 56K 1MB download in 2.28 sec Diagnosis: Awesome! 20% + : 69.03 % faster than the average for host (onelinkpr.net) Validation Link:: https://testmy.net/stats/id-PDKBQX809 Quote Link to comment Share on other sites More sharing options...
trogers Posted February 10, 2006 CID Share Posted February 10, 2006 Perhaps something in the network or line is limiting your speed. Do a network diagnostic test here and post all results including the 'Statistics' and 'More Details': http://nitro.ucsc.edu/ One question - Are you located in Europe? Quote Link to comment Share on other sites More sharing options...
jackyandjoe Posted February 10, 2006 CID Share Posted February 10, 2006 No, i am at Puerto Rico, current ISP is onelink which just took over adelphia... here is what u asked for... and tnx again... TCP/Web100 Network Diagnostic Tool v5.3.3d click START to begin Another client is currently being served, your test will begin within 45 seconds Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 461.74Kb/s running 10s inbound test (server to client) . . . . . . 2.52Mb/s The slowest link in the end-to-end path is a 10 Mbps Ethernet subnet Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex click START to re-test WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 461.74Kb/s running 10s inbound test (server to client) . . . . . . 2.52Mb/s ------ Client System Details ------ OS data: Name = Windows XP, Architecture = x86, Version = 5.1 Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_05 ------ Web100 Detailed Analysis ------ 10 Mbps Ethernet 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 = 158.22 msec; the Packet size = 1460 Bytes; and There were 31 packets retransmitted, 154 duplicate acks received, and 60 SACK blocks received The connection was idle 0 seconds (0%) of the time This connection is network limited 99.95% 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: ON Packet size is preserved End-to-End Server IP addresses are preserved End-to-End Client IP addresses are preserved End-to-End WEB100 Kernel Variables: Client: localhost/127.0.0.1 AckPktsIn: 308 AckPktsOut: 0 BytesRetrans: 44608 CongAvoid: 23 CongestionOverCount: 0 CongestionSignals: 1 CountRTT: 146 CurCwnd: 62780 CurMSS: 1460 CurRTO: 390 CurRwinRcvd: 256960 CurRwinSent: 16304 CurSsthresh: 61320 DSACKDups: 0 DataBytesIn: 0 DataBytesOut: 3236528 DataPktsIn: 0 DataPktsOut: 2220 DupAcksIn: 154 ECNEnabled: 0 FastRetran: 1 MaxCwnd: 124100 MaxMSS: 1460 MaxRTO: 610 MaxRTT: 340 MaxRwinRcvd: 256960 MaxRwinSent: 16304 MaxSsthresh: 61320 MinMSS: 1460 MinRTO: 300 MinRTT: 100 MinRwinRcvd: 64240 MinRwinSent: 16304 NagleEnabled: 1 OtherReductions: 0 PktsIn: 308 PktsOut: 2220 PktsRetrans: 31 X_Rcvbuf: 103424 RcvWinScale: 7 SACKEnabled: 3 SACKsRcvd: 60 SendStall: 0 SlowStart: 122 SampleRTT: 110 SmoothedRTT: 140 X_Sndbuf: 103424 SndWinScale: 2 SndLimTimeRwin: 0 SndLimTimeCwnd: 10021560 SndLimTimeSender: 4968 SndLimTransRwin: 0 SndLimTransCwnd: 8 SndLimTransSender: 8 SndLimBytesRwin: 0 SndLimBytesCwnd: 2668228 SndLimBytesSender: 568300 SubsequentTimeouts: 0 SumRTT: 23100 Timeouts: 0 TimestampsEnabled: 0 WinScaleRcvd: 2 WinScaleSent: 7 DupAcksOut: 0 StartTimeUsec: 917719 Duration: 10030049 c2sData: 3 c2sAck: 3 s2cData: 8 s2cAck: 3 half_duplex: 0 link: 100 congestion: 0 bad_cable: 0 mismatch: 1 spd: 0.00 bw: 3.32 loss: 0.000450450 avgrtt: 158.22 waitsec: 0.00 timesec: 10.00 order: 0.5000 rwintime: 0.0000 sendtime: 0.0005 cwndtime: 0.9995 rwin: 1.9604 swin: 64.0000 cwin: 0.9468 rttsec: 0.158219 Sndbuf: 8388608 aspd: 7.21059 Checking for mismatch on uplink (speed > 50 [0>50], (xmitspeed < 5) [0.46<5] (rwintime > .9) [0>.9], (loss < .01) [4.50<.01] Checking for excessive errors condition (loss/sec > .15) [4.50>.15], (cwndtime > .6) [0.99>.6], (loss < .01) [4.50<.01], (MaxSsthresh > 0) [61320>0] Checking for 10 Mbps link (speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0] (xmitspeed < 9.5) [0.46<9.5] (loss < .01) [4.50<.01], (mylink > 0) [10.0>0] Checking for Wireless link (sendtime = 0) [5.0E=0], (speed < 5) [0<5] (Estimate > 50 [3.32>50], (Rwintime > 90) [0>.90] (RwinTrans/CwndTrans = 1) [0/8=1], (mylink > 0) [10.0>0] Checking for DSL/Cable Modem link (speed < 2) [0<2], (SndLimTransSender = 0) [8=0] (SendTime = 0) [5.0E-4=0], (mylink > 0) [10.0>0] Checking for half-duplex condition (rwintime > .95) [0>.95], (RwinTrans/sec > 30) [0>30], (SenderTrans/sec > 30) [0.8>30], OR (mylink <= 10) [10.0<=10] Checking for congestion (cwndtime > .02) [0.99>.02], (mismatch = 0) [1=0] (MaxSsthresh > 0) [61320>0] estimate = 3.32 based on packet size = 11Kbits, RTT = 158.22msec, and loss = 4.5045E-4 The theoretical network limit is 3.32 Mbps The NDT server has a 8192.0 KByte buffer which limits the throughput to 404.50 Mbps Your PC/Workstation has a 250.0 KByte buffer which limits the throughput to 12.39 Mbps The network based flow control limits the throughput to 5.98 Mbps Client Data reports link is 'Ethernet', Client Acks report link is 'Ethernet' Server Data reports link is 'OC-48', Server Acks report link is 'Ethernet' Quote Link to comment Share on other sites More sharing options...
trogers Posted February 10, 2006 CID Share Posted February 10, 2006 From this test, 2 items are limiting your speed: "The slowest link in the end-to-end path is a 10 Mbps Ethernet subnet Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex" "The NDT server has a 8192.0 KByte buffer which limits the throughput to 404.50 Mbps. Your PC/Workstation has a 250.0 KByte buffer which limits the throughput to 12.39 Mbps. The network based flow control limits the throughput to 5.98 Mbps." There is a mismatch in duplex setting between your Nic or router (if any) and your modem. Read this link on suggestions to rectify: http://homepage.ntlworld.com/robin.d.h.walker/cmtips/ethernet.html#ethernet Traffic in your ISP network is only giving you a bandwidth just under 6 Mbps at the moment. Your PC has been set to a bandwidth limit of just over 12 Mbps, which is adequate for your subscribed speed. So you are limited by some heavy ISP traffic. Quote Link to comment Share on other sites More sharing options...
jackyandjoe Posted February 10, 2006 CID Share Posted February 10, 2006 trogers, thanks for looking into all that crap, cause i sure dont understad it,,, well, my eth card is already set to half duplex since is connected directly to the cable modem which is a motorola sb5100 and is what that link you gave me was basically telling to do... unless it is the modem that is set otherwise, how can i look to the modem settings??? if you need me to.... Quote Link to comment Share on other sites More sharing options...
trogers Posted February 10, 2006 CID Share Posted February 10, 2006 You can do your nitro test again and check if there is still a duplex mismatch. To check if your speed is optimum, do testing when network traffic is low, probably 2-6 am period. Quote Link to comment Share on other sites More sharing options...
Sacrifist Posted February 13, 2006 Author CID Share Posted February 13, 2006 sorry i havent posted my speeds, my isp is coming out tomorrow because my connection is having serious issues. Is there anything on my end that could be causing me not to be able to connect to any servers in Steam, or ftps. I dont have any firewalls running and according to my isp, they arent using one either. I could connect the first 2 days I had this new connection but since then I cannot get into servers. Just wondering if its something Im missing before their tech comes out tomorrow Quote Link to comment Share on other sites More sharing options...
trogers Posted February 14, 2006 CID Share Posted February 14, 2006 If you have problem connecting, it could be the duplex mismatch. Reset your adapter to "auto-sensing", power down your modem and reboot your comp and see you can connect. Quote Link to comment Share on other sites More sharing options...
Sacrifist Posted February 14, 2006 Author CID Share Posted February 14, 2006 na, that isnt it. Went down that road already Quote Link to comment Share on other sites More sharing options...
Sacrifist Posted February 14, 2006 Author CID Share Posted February 14, 2006 You seeing anything here worth discussing with the tech guy? CP/Web100 Network Diagnostic Tool v5.3.3d click START to begin Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 254.42Kb/s running 10s inbound test (server to client) . . . . . . 683.81kb/s Your PC is connected to a Cable/DSL modem Information: Other network traffic is congesting the link AckPktsIn: 346 AckPktsOut: 0 BytesRetrans: 7050 CongAvoid: 268 CongestionOverCount: 0 CongestionSignals: 2 CountRTT: 288 CurCwnd: 18330 CurMSS: 1410 CurRTO: 490 CurRwinRcvd: 128480 CurRwinSent: 16304 CurSsthresh: 16920 DSACKDups: 0 DataBytesIn: 0 DataBytesOut: 872790 DataPktsIn: 0 DataPktsOut: 619 DupAcksIn: 54 ECNEnabled: 0 FastRetran: 2 MaxCwnd: 33840 MaxMSS: 1410 MaxRTO: 950 MaxRTT: 560 MaxRwinRcvd: 128480 MaxRwinSent: 16304 MaxSsthresh: 16920 MinMSS: 1410 MinRTO: 360 MinRTT: 100 MinRwinRcvd: 64240 MinRwinSent: 16304 NagleEnabled: 1 OtherReductions: 0 PktsIn: 347 PktsOut: 619 PktsRetrans: 5 X_Rcvbuf: 103424 RcvWinScale: 7 SACKEnabled: 0 SACKsRcvd: 0 SendStall: 0 SlowStart: 20 SampleRTT: 120 SmoothedRTT: 190 X_Sndbuf: 103424 SndWinScale: 1 SndLimTimeRwin: 0 SndLimTimeCwnd: 10089905 SndLimTimeSender: 2686 SndLimTransRwin: 0 SndLimTransCwnd: 1 SndLimTransSender: 1 SndLimBytesRwin: 0 SndLimBytesCwnd: 872790 SndLimBytesSender: 0 SubsequentTimeouts: 0 SumRTT: 70940 Timeouts: 0 TimestampsEnabled: 0 WinScaleRcvd: 1 WinScaleSent: 7 DupAcksOut: 0 StartTimeUsec: 144415 Duration: 10093393 c2sData: 2 c2sAck: 2 s2cData: 9 s2cAck: 2 half_duplex: 0 link: 100 congestion: 1 bad_cable: 0 mismatch: 0 spd: 0.00 bw: 0.77 loss: 0.003231018 avgrtt: 246.32 waitsec: 0.00 timesec: 10.00 order: 0.1561 rwintime: 0.0000 sendtime: 0.0003 cwndtime: 0.9997 rwin: 0.9802 swin: 64.0000 cwin: 0.2582 rttsec: 0.246319 Sndbuf: 8388608 aspd: 5.11140 Checking for mismatch on uplink (speed > 50 [0>50], (xmitspeed < 5) [0.25<5] (rwintime > .9) [0>.9], (loss < .01) [0.00<.01] Checking for excessive errors condition (loss/sec > .15) [3.23>.15], (cwndtime > .6) [0.99>.6], (loss < .01) [0.00<.01], (MaxSsthresh > 0) [16920>0] Checking for 10 Mbps link (speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0] (xmitspeed < 9.5) [0.25<9.5] (loss < .01) [0.00<.01], (mylink > 0) [3.0>0] Checking for Wireless link (sendtime = 0) [3.0E=0], (speed < 5) [0<5] (Estimate > 50 [0.77>50], (Rwintime > 90) [0>.90] (RwinTrans/CwndTrans = 1) [0/1=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>.95], (RwinTrans/sec > 30) [0>30], (SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [3.0<=10] Checking for congestion (cwndtime > .02) [0.99>.02], (mismatch = 0) [0=0] (MaxSsthresh > 0) [16920>0] estimate = 0.77 based on packet size = 11Kbits, RTT = 246.32msec, and loss = 0.003231018 The theoretical network limit is 0.77 Mbps The NDT server has a 8192.0 KByte buffer which limits the throughput to 259.82 Mbps Your PC/Workstation has a 125.0 KByte buffer which limits the throughput to 3.97 Mbps The network based flow control limits the throughput to 1.04 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 'T1' Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 254.42Kb/s running 10s inbound test (server to client) . . . . . . 683.81kb/s ------ Client System Details ------ OS data: Name = Windows XP, Architecture = x86, Version = 5.1 Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_05 ------ Web100 Detailed Analysis ------ Cable modem/DSL/T1 link found. Link set to Full 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 = 246.32 msec; the Packet size = 1410 Bytes; and There were 5 packets retransmitted, 54 duplicate acks received, and 0 SACK blocks received The connection was idle 0 seconds (0%) of the time This connection is network limited 99.97% of the time. Web100 reports TCP negotiated the optional Performance Settings to: RFC 2018 Selective Acknowledgment: OFF RFC 896 Nagle Algorithm: ON RFC 3168 Explicit Congestion Notification: OFF RFC 1323 Time Stamping: OFF RFC 1323 Window Scaling: ON Information: Network Middlebox is modifying MSS variable Server IP addresses are preserved End-to-End Quote Link to comment Share on other sites More sharing options...
trogers Posted February 14, 2006 CID Share Posted February 14, 2006 "MaxMSS: 1410, MaxRwinRcvd: 128480, Round trip time = 246.32 msec" "Your PC/Workstation has a 125.0 KByte buffer which limits the throughput to 3.97 Mbps The network based flow control limits the throughput to 1.04 Mbps" These are the observations from your test report: Your RWIN is not set to a multiple of MSS Your MSS is not optimum. It could be that your ISP has a web proxy server that change MTU values. Carry out this ping check to find your comp's largest MTU value: Call out your DOS black screen and after C: use this command ping -f -l (max value) www.testmy.net Where -l is minus small L and max value is your largest anticipated MTU value minus 28. Say you start with assumed MTU value of 1500, max value is 1500-28 = 1472 If you get a message "Packets need to be fragmented..." Then 1500 is not your largest MTU. Go on pinging with a max value less 1 until you get a proper result like "Reply from XX.XXX.XX.XXX: bytes= ______ time = _____ ms TTL= ___ The bytes value shown + 28 = your largest MTU At the moment, your ISP network is busy. Your comp has a buffer of 125 Kbytes giving a throughput limit of almost 4 Mbps but your network is giving you a throughput of only 1 Mbps. Your Round Trip Time (RTT) is rather high. Usually, test performed from USA should not exceed 200 ms. Place your modem and router a few feet apart. Make sure you have no electrical devices near them (such as sound speakers, cordless phone, etc) emitting electromagnetic interference affecting your signal flow. Quote Link to comment Share on other sites More sharing options...
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