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Thread: Shaw 7mb/1mb

  1. #1
    Member kever's Avatar
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    Shaw 7mb/1mb

    Hey all, I'm on Shaw Extreme and was wondering what would be the optimum settings that work the best? Cheers!

  2. #2
    fem the retarded rabbit mccoffee's Avatar
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    http://www.speedguide.net:8117/ take this test cut and paste everything below ip information
    Comptia a+ n+

  3. #3
    Member kever's Avatar
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    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 RWIN values that might work well with your current MTU/MSS:
    513920 (MSS x 44 * scale factor of 8) <-- current value
    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 = 57 hops
    TTL value is ok.

    Timestamps (RFC1323) = OFF
    Selective Acknowledgements (RFC2018) = ON
    IP type of service field (RFC1349) = 00000000 (0)

  4. #4
    Administrator Philip's Avatar
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    Quote Originally Posted by mccoffee
    http://www.speedguide.net:8117/ take this test cut and paste everything below ip information
    Hey, we changed that to http://www.speedguide.net:8080 (port 8080 instead) but the old one (8117) still works for the time being

  5. #5
    Administrator Philip's Avatar
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    Quote Originally Posted by kever
    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 RWIN values that might work well with your current MTU/MSS:
    513920 (MSS x 44 * scale factor of 8) <-- current value
    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 = 57 hops
    TTL value is ok.

    Timestamps (RFC1323) = OFF
    Selective Acknowledgements (RFC2018) = ON
    IP type of service field (RFC1349) = 00000000 (0)
    Looks ok...

    You might try 256960 for the RWIN value too (it won't make it any faster, but in the presense of heavy network congestion, it might make it a bit more reliable).

    If you want to play with TOS, in the Advanced tab of the Optimizer you can set "DisableUserTOSSetting" to 0, and "DefaultTOSValue" to 80.

  6. #6
    Member kever's Avatar
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    Thanks guys ...

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