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Thread: TCP optimizer on Talktalk

  1. #1
    Junior Member
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    Smile TCP optimizer on Talktalk

    ISP: Talktalk up to 8mb broadband in UK (Opal Telecom)
    Router syncs@ 8127kbps
    SpeedTest without TCP Optimizer 3500kbps
    Speedtest with Optimizer max7000kbps!

    SpeedGuide.net TCP Analyzer Results
    Tested on: 11.07.2007 08:13
    IP address: 89.241.xxx.xx

    TCP options string: 0204059e0103030301010402
    MSS: 1438
    MTU: 1478
    TCP Window: 517680 (multiple of MSS)
    RWIN Scaling: 3
    Unscaled RWIN : 64710
    Reccomended RWINs: 63272, 126544, 253088, 506176
    BDP limit (200ms): 20707kbps (2588KBytes/s)
    BDP limit (500ms): 8283kbps (1035KBytes/s)
    MTU Discovery: ON
    TTL: 43
    Timestamps: OFF
    SACKs: ON
    IP ToS: 00000000 (0)

    Hi I am new to this optimizer software. My connection was capped at 500kbps at any time of the day cos apparently in June I had gone over my limit. I have now had this removed. Once I installed this software, TCP Optimizer, I managed to get a faster speed but my question is whether talktalk will "clock" onto this and reduce my speed. Is this a purely software based tweak which does not affect the bandwidth i am using on the talktlak servers. My modem syncs at 8000kbps so does this software enable me to use more of this bandwidth allocated to me?
    Thanks

  2. #2
    Elite Member trogers's Avatar
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    TCP Optimizer just modifies TCP settings in your Windows registry. It is a run once program and does not install into your computer nor is it interactive. The target of tweaks is to achieve at least 90% of your capped speed. the balance being used up by overheads.

    Try the following with TCP Optimizer:

    General Settings tab:
    Custom settings - check
    Modify All Network Adapters - check
    network adapter selection - your NIC
    MTU 1478
    TTL - 64
    TCP Receive Window - 253088
    MTU Discovery - Yes
    Black Hole Detect - No
    Selective Acks - Yes
    Max Duplicate ACKs - 2
    TCP 1323 Options:
    Windows Scaling - checked
    Timestamps - uncheck

    Advanced Settings tab:
    Max Connections per Server - 10
    Max Connections per 1.0 Server - 20
    LocalPriority - 1
    Host Priority - 1
    DNSPriority - 1
    NetbtPriority - 1
    Lan Browsing speedup - optimized
    QoS: NonBestEffortLimit - 0
    ToS: DisableUserTOSSetting - 0
    ToS: DefaultTOSValue - 80
    MaxNegativeCacheTtl - 0
    NetFailureCacheTime - 0
    NegativeSOACache Time - 0
    LAN Request Buffer Size - 32768
    Then select "Apply Changes" and reboot to take effect

  3. #3
    Junior Member
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    Thanks for the reply

    I am happy with the speed I am getting. What I wanted to know is whether my isp will detect that I am using a faster speed to download and hence might cap my speed again. As my modem is synching at 8000kbps, without TCP speed is 3500kbps and with 7000kbps, will my ISP detect that I am getting a faster speed and then cap it. Essentially, does the TCP enable me to use more of the bandwidth I am entitled to, or does it go beyond what the ISP allocates to me?

  4. #4
    Elite Member trogers's Avatar
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    Quote Originally Posted by s_jamjam View Post
    Thanks for the reply

    I am happy with the speed I am getting. What I wanted to know is whether my isp will detect that I am using a faster speed to download and hence might cap my speed again. As my modem is synching at 8000kbps, without TCP speed is 3500kbps and with 7000kbps, will my ISP detect that I am getting a faster speed and then cap it. Essentially, does the TCP enable me to use more of the bandwidth I am entitled to, or does it go beyond what the ISP allocates to me?
    TCP optimizer cannot make your speed faster than your cap. So if you paid your ISP to give you a speed of 8000 kbps, you can tweak to about 90% of that.

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