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Why forcing NIC to 1/2 duplex max's my connection


Daemon

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Hi All

I have had a problem with my connection since I changed over from DSL to cable. My cable is  alot better BUT it sucks if I let my nic  connect at 100 full duplex. I get somwhere in the 8 to 10 k range witch would be great if I was dial-up. Anyway I came to this site back when I first got it and when I left the site I was sitting at over 500k download speedtest. Thing is all I really have to do is set my Nic at 10 half-duplex and my connection takes off. I dont understand why that makes my connection faster but I just reset it to 1/2 duplex and see the result.Any other Eastlink peeps see this, I was so depressed when I first got set up it was crazy.

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

Connection is:: 273 Kbps about 0.3 Mbps (tested with 579 kB)

Download Speed is:: 33 kB/s

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

Test Time:: Mon Oct 17 10:24:16 UTC-0300 2005

Bottom Line:: 5X faster than 56K 1MB download in 31.03 sec

Diagnosis: May need help : running at only 8.56 % of your hosts average (eastlink.ca)

Validation Link:: https://testmy.net/stats/id-QMUTJDX40

Now realtime I am changing back to half duplex

For some reason it used a 3 meg file but see the results - does this make any sense to anyone?

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

Connection is:: 3395 Kbps about 3.4 Mbps (tested with 2992 kB)

Download Speed is:: 414 kB/s

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

Test Time:: Mon Oct 17 10:36:49 UTC-0300 2005

Bottom Line:: 61X faster than 56K 1MB download in 2.47 sec

Diagnosis: Looks Great : 6.36 % faster than the average for host (eastlink.ca)

Validation Link:: https://testmy.net/stats/id-FICE9NW6B

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Thanks for the reply

I have a SurfBOARD SB1500 Cablemodem (Motorola)

If I leave it to auto-neg or set it for 10Mfull duplex it is horrible but if

I manually config the NIC for half duplec all is great. My speeds are

pretty good consistantly but you know what its like when you get curious

about something :)

TCP/Web100 Network Diagnostic Tool v5.3.3d

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

running 10s outbound test (client to server) . . . . . 488.16Kb/s

running 10s inbound test (server to client) . . . . . . 3.67Mb/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-test

Speed Test Results

https://testmy.net/d_load.php'>https://testmy.net/d_load.php

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

Connection is:: 4683 Kbps about 4.7 Mbps (tested with 2992 kB)

Download Speed is:: 572 kB/s

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

Test Time:: Tue Oct 18 18:16:37 UTC-0300 2005

Bottom Line:: 84X faster than 56K 1MB download in 1.79 sec

Diagnosis: Awesome! 20% + : 46.12 % faster than the average for host (eastlink.ca)

Validation Link:: https://testmy.net/stats/id-2I91V4SQJ

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