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Thread: Trogers, tweak my Fios 20/20 please...

  1. #1
    Junior Member
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    Apr 2008
    Posts
    3

    Trogers, tweak my Fios 20/20 please...

    Hello I just got my new Fios service, and am a bit disappointed in the results.
    Currently I seem to be hitting a wall at ~3.8mb up and ~12.5mb down so I was hoping someone could help me tweak my connection.

    I have a Fios 20/20 symmetrical DHCP connection running WinXP Pro SP3 32bit.

    I was told I need to tweak some settings for upload speed and download speed, but I am unsure what or where to tweak them.

    I also have been told by a few friends that the Fios optimizer sets everything for PPPoE/A and not to use it.

    Also here are my analyzer results:

    SpeedGuide.net TCP Analyzer Results
    Tested on: 07.02.2008 10:51
    IP address: 72.90.xxx.xxx

    TCP options string: 020405b4
    MSS: 1460
    MTU: 1500
    TCP Window: 65535 (NOT multiple of MSS)
    RWIN Scaling: 0
    Unscaled RWIN : 65535
    Reccomended RWINs: 64240, 128480, 256960, 513920
    BDP limit (200ms): 2621kbps (328KBytes/s)
    BDP limit (500ms): 1049kbps (131KBytes/s)
    MTU Discovery: ON
    TTL: 119
    Timestamps: OFF
    SACKs: OFF
    IP ToS: 00000000 (0)
    Last edited by DaEnigma; 07-02-08 at 11:21 AM. Reason: Added more detailed info

  2. #2
    Moderator YeOldeStonecat's Avatar
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    Have you tried the SG TCP Optimizer yet? Run it..follow the suggested settings...apply, reboot...try it out.
    MORNING WOOD Lumber Company
    Guinness for Strength!!!

  3. #3
    Junior Member
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    After using the optimizer I get a much better download (20.8mb), but the upload remains the same at ~3.8mb.

    Any ideas?

    New analyzer results:

    SpeedGuide.net TCP Analyzer Results
    Tested on: 07.02.2008 11:21
    IP address: 72.90.xxx.xxx

    TCP options string: 020405b40103030401010402
    MSS: 1460
    MTU: 1500
    TCP Window: 1027840 (multiple of MSS)
    RWIN Scaling: 4
    Unscaled RWIN : 64240
    Reccomended RWINs: 64240, 128480, 256960, 513920
    BDP limit (200ms): 41114kbps (5139KBytes/s)
    BDP limit (500ms): 16445kbps (2056KBytes/s)
    MTU Discovery: ON
    TTL: 55
    Timestamps: OFF
    SACKs: ON
    IP ToS: 00000000 (0)
    Last edited by DaEnigma; 07-02-08 at 08:51 PM.

  4. #4
    Junior Member
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    Here are the cablenut settings I applied from a css file for 20Mbps full duplex I found (I am now testing):

    But if there are any setting here that should be changed please let me know.

    DefaultReceiveWindow =
    DefaultSendWindow = 1027840
    DisableAddressSharing =
    InitialLargeBufferCount =
    InitialMediumBufferCount =
    InitialSmallBufferCount =
    LargeBufferSize =
    MaxFastTransmit =
    MediumBufferSize =
    Priority Boost =
    SmallBufferSize =
    TransmitWorker =
    FastSendDatagramThreshhold =
    EnableFastRouteLookup =
    EnablePMTUDiscovery = 1
    IgnorePushBitsOnReceives =
    GlobalMaxTcpWindowSize = 1027840
    MaxFreeTcbs =
    MaxHashTableSize =
    MaxNormLookupMemory =
    SackOpts = 1
    SynAttackProtect = 0
    Tcp1323Opts = 1
    TcpLogLevel =
    TcpMaxDupAttacks = 3
    TcpMaxHalfOpen =
    TcpMaxHalfOpenRetired =
    TcpRecvSegmentSize = 1460
    TcpSendSegmentSize = 1460
    TcpTimedWaitDelay = 30
    TcpUseRFC1122UrgentPointer =
    TcpWindowSize = 1027840
    MaxConnectionsPer1_0Server = 20
    MaxConnectionsPerServer = 10
    DefaultTimeToLive = 64
    DefaultUserTOSSetting =
    TcpMaxDataRetransmissions =
    DefaultTOSValue =
    Last edited by DaEnigma; 07-02-08 at 01:27 PM.

  5. #5
    Elite Member trogers's Avatar
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    Location
    Bangkok, Thailand
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    12,323
    Quote Originally Posted by DaEnigma View Post
    Here are the cablenut settings I applied from a css file for 20Mbps full duplex I found (I am now testing):

    But if there are any setting here that should be changed please let me know.

    DefaultReceiveWindow =
    DefaultSendWindow = 1027840
    DisableAddressSharing =
    InitialLargeBufferCount =
    InitialMediumBufferCount =
    InitialSmallBufferCount =
    LargeBufferSize =
    MaxFastTransmit =
    MediumBufferSize =
    Priority Boost =
    SmallBufferSize =
    TransmitWorker =
    FastSendDatagramThreshhold =
    EnableFastRouteLookup =
    EnablePMTUDiscovery = 1
    IgnorePushBitsOnReceives =
    GlobalMaxTcpWindowSize = 1027840
    MaxFreeTcbs =
    MaxHashTableSize =
    MaxNormLookupMemory =
    SackOpts = 1
    SynAttackProtect = 0
    Tcp1323Opts = 1
    TcpLogLevel =
    TcpMaxDupAttacks = 3
    TcpMaxHalfOpen =
    TcpMaxHalfOpenRetired =
    TcpRecvSegmentSize = 1460
    TcpSendSegmentSize = 1460
    TcpTimedWaitDelay = 30
    TcpUseRFC1122UrgentPointer =
    TcpWindowSize = 1027840
    MaxConnectionsPer1_0Server = 20
    MaxConnectionsPerServer = 10
    DefaultTimeToLive = 64
    DefaultUserTOSSetting =
    TcpMaxDataRetransmissions =
    DefaultTOSValue =
    Upload speed cannot be tweaked. The DefaultSendWindow in cablenut is not a TCP parameter, but an AFD parameter - affecting only the way running applications relate to memory caching in the CPU. Correct calculation is

    DefaultSendWindow = Speed (in kbps) x 1024 divided by 8

    Thus, = 20000 x 1024 / 8 = 2560000

    As your internet connection is fibre optics, latency should be lower than cable and phone lines.

    Try the following with TCP Optimizer:

    General Settings tab:
    Custom settings - check
    Modify All Network Adapters - check
    network adapter selection - your NIC
    MTU - 1500
    TTL - 64
    TCP Receive Window - 256960
    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
    "Contentment is not the fulfillment of what you want, but is the realisation of how much you already have" - anon

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