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Thread: my MTU and MSS is way off i need help!

  1. #1

    my MTU and MSS is way off i need help!

    i have a dell inspiron 1300 w/ dell internal wireless. xp home w/ sp2. my analyzer results are normal whenever i'm on the wired connection but when im wireless my settings are wayyyy off.

    Results
    MTU = 1400
    MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings.
    MSS = 1360
    MSS is not optimized for broadband. Consider increasing your MTU value.
    Default TCP Receive Window (RWIN) = 37752
    RWIN Scaling (RFC1323) = 0 bits
    Unscaled TCP Receive Window = 37752

    For optimum performance, consider changing RWIN to a multiple of MSS.
    Other RWIN values that might work well with your current MTU/MSS:
    522240 (MSS x 48 * scale factor of 8)
    261120 (MSS x 48 * scale factor of 4)
    130560 (MSS x 48 * scale factor of 2)
    65280 (MSS x 48)
    bandwidth * delay product (Note this is not a speed test):

    Your TCP Window limits you to: 1510.08 kbps (188.76 KBytes/s) @ 200ms
    Your TCP Window limits you to: 604.032 kbps (75.504 KBytes/s) @ 500ms
    MTU Discovery (RFC1191) = ON
    Time to live left = 54 hops
    TTL value is ok.
    Timestamps (RFC1323) = OFF
    Selective Acknowledgements (RFC2018) = ON
    IP type of service field (RFC1349) = 00000000 (0)

  2. #2
    fem the retarded rabbit mccoffee's Avatar
    Join Date
    Nov 2001
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    Cleveland, Ohio, United States
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    Try thease in the sg optmizer below me to download and install on the wirless router you need to change the mtu on the router most likey ,or it could be since you are going though two routers you might be fine.
    Comptia a+ n+

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