Non-stabil connection....

Get help and discuss anything related to tweaking your internet connection, as well as the different tools and registry patches on the site. TCP Optimizer settings and Analyzer results should be posted here.
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atillabaysal
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Posts: 14
Joined: Mon Feb 18, 2008 10:02 am

Non-stabil connection....

Post by atillabaysal »

Hello,
My ISP has a connection max.8000/1000 kbps.However my download speed is between 2000-5000 kbps.Although my distence to santral is 300 mt., i couldn't see 8000 kbps anymore.Windows SP3
You can see my speed test , tracert and modem values below:

Max. speed...
7/27/2009 7:36 AM GMT 95.65.206.18 KOC NET 5.44 Mb/s 0.47 Mb/s 44 ms Bursa ~ 150 mi



C:\>tracert http://www.yahoo.com

En fazla 30 atlamanın üstünde
www-real.wa1.b.yahoo.com [87.248.113.14]'ye izleme yolu :

1 <1 ms <1 ms <1 ms My-Modem [192.168.2.1]
2 10 ms 11 ms 10 ms My-UBR [192.168.20.1]
3 13 ms 11 ms 11 ms ns1.ttnet.net.tr [88.255.159.37]
4 11 ms 11 ms 10 ms 81.212.212.6
5 * * * İstek zaman aşımına uğradı.
6 * * * İstek zaman aşımına uğradı.
7 70 ms 70 ms 71 ms amsterdam_2_-acb_t2_2.turktelekom.com.tr [212.15
6.102.37]
8 76 ms 98 ms 78 ms adm-b5-link.telia.net [213.248.68.141]
9 76 ms 76 ms 76 ms adm-bb1-link.telia.net [80.91.253.187]
10 83 ms 83 ms 83 ms ldn-bb1-link.telia.net [80.91.253.16]
11 94 ms 94 ms 94 ms dln-b3-link.telia.net [80.91.249.134]
12 82 ms 85 ms 82 ms yahoo-115023-dln-b3.c.telia.net [213.155.141.182
]
13 82 ms 82 ms 82 ms gi-1-3.bas-b1.ird.yahoo.com [87.248.101.5]
14 82 ms 82 ms 84 ms f1.us.http://www.vip.ird.yahoo.com [87.248.113.14]

MODEM-ROUTER-VOİP http://www.airties.com/product-details. ... i=3&dil=tr

Bağlantı Durumu: Bağlı
Mod: G.DMT/Annex A
Hat Durumu: Sorunsuz

Gelen Giden
ADSL Hızı(Kb/s): 8128 800
Ulaşılabilir Hız(Kb/s): 8128 1024
SNR Sınırı (dB): 15.9 15.0
Hat Zayıflaması(dB): 9.0 4.5
Güç (dB): 13.4 11.6

PVC Adı Bağlantı Durumu IP Adresi Protokol

vc1 Bağlı 95.65.206.18 pppoe MTU:1492 byte

AND SPEEDGUİDE ANALYZE İS AS BELOW:

« SpeedGuide.net TCP Analyzer Results »
Tested on: 07.27.2009 03:55
IP address: 95.65.xxx.xx
Client OS: Windows XP

TCP options string: 0204058c0103030301010402
MSS: 1420
MTU: 1460
TCP Window: 513920 (NOT multiple of MSS)
RWIN Scaling: 3 bits (2^3=8)
Unscaled RWIN : 64240
Recommended RWINs: 65320, 130640, 261280, 522560, 1045120
BDP limit (200ms): 20557kbps (2570KBytes/s)
BDP limit (500ms): 8223kbps (1028KBytes/s)
MTU Discovery: OFF
TTL: 107
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

Although I examined the regedit MTU seens to be 1492 . At modem-router web midface mtu seens to be 1492.
At modem ,when I close NAT the internet cut off.But at speed guide analyzes, MTU seens to be 1460.

According to these values,please send me my cablenut parameters and speedguide parameters.
thanks in advance with kind regards..
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Rollingstone
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Posts: 3161
Joined: Wed Jan 23, 2008 5:50 am
Location: HoChiMinh, Vietnam

Post by Rollingstone »

Try the following with TCP Optimizer and see if MTU will change:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1500
TTL - 64
Windows Scaling - uncheck
TCP Receive Window - leave blank
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Timestamps - uncheck

Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 10
LocalPriority - 5
Host Priority - 6
DNSPriority - 7
NetbtPriority - 8
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

Save changes, reboot and post new TCP Analyzer Report.
What makes you: "...waking up in the morning so excited about & wanna FLY out of the door ?"
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atillabaysal
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Posts: 14
Joined: Mon Feb 18, 2008 10:02 am

Post by atillabaysal »

« SpeedGuide.net TCP Analyzer Results »
Tested on: 07.27.2009 05:53
IP address: 188.3.xxx.xxx
Client OS: Windows XP

TCP options string: 0204058c0103030201010402
MSS: 1420
MTU: 1460
TCP Window: 261360 (NOT multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 65340
Recommended RWINs: 65320, 130640, 261280, 522560, 1045120
BDP limit (200ms): 10454kbps (1307KBytes/s)
BDP limit (500ms): 4182kbps (523KBytes/s)
MTU Discovery: ON
TTL: 43
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)
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atillabaysal
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Posts: 14
Joined: Mon Feb 18, 2008 10:02 am

Post by atillabaysal »

Hello,
« SpeedGuide.net TCP Analyzer Results »
Tested on: 07.27.2009 05:53
IP address: 188.3.xxx.xxx
Client OS: Windows XP

TCP options string: 0204058c0103030201010402
MSS: 1420
MTU: 1460
TCP Window: 261360 (NOT multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 65340
Recommended RWINs: 65320, 130640, 261280, 522560, 1045120
BDP limit (200ms): 10454kbps (1307KBytes/s)
BDP limit (500ms): 4182kbps (523KBytes/s)
MTU Discovery: ON
TTL: 43
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

THANKS
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Rollingstone
Senior Member
Posts: 3161
Joined: Wed Jan 23, 2008 5:50 am
Location: HoChiMinh, Vietnam

Post by Rollingstone »

Try the following with TCP Optimizer:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1460
TTL - 64
Windows Scaling - check
TCP Receive Window - 130640
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Timestamps - uncheck

Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 10
LocalPriority - 5
Host Priority - 6
DNSPriority - 7
NetbtPriority - 8
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
What makes you: "...waking up in the morning so excited about & wanna FLY out of the door ?"
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atillabaysal
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Posts: 14
Joined: Mon Feb 18, 2008 10:02 am

Post by atillabaysal »

hello,

please cablenut parameter ?

thanks
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Rollingstone
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Posts: 3161
Joined: Wed Jan 23, 2008 5:50 am
Location: HoChiMinh, Vietnam

Post by Rollingstone »

Cablenut:

DefaultReceiveWindow = leave blank
DefaultSendWindow = 131072
DisableAddressSharing = 1
InitialLargeBufferCount = 200
InitialMediumBufferCount = 480
InitialSmallBufferCount = 640
LargeBufferSize = 819200
MaxFastTransmit = 64000
MediumBufferSize = 150400
Priority Boost = 0
SmallBufferSize = 12800
TransmitWorker = 32
FastSendDatagramThreshhold = 4096
EnableFastRouteLookup = 1
EnablePMTUDiscovery = 1
IgnorePushBitsOnReceives = 0
GlobalMaxTcpWindowSize = 130640
MaxFreeTcbs = 8000
MaxHashTableSize = 32768

MaxNormLookupMemory = 5000000
SackOpts = 1
SynAttackProtect = 1
Tcp1323Opts = 1
TcpLogLevel = 1
TcpMaxDupAttacks = 2
TcpMaxHalfOpen = 100
TcpMaxHalfOpenRetired = 80
TcpRecvSegmentSize = 1420
TcpSendSegmentSize = 1420
TcpTimedWaitDelay = 30
TcpUseRFC1122UrgentPointer = 0
TcpWindowSize = 130640
MaxConnectionsPer1_0Server = 10
MaxConnectionsPerServer = 10
DefaultTimeToLive = 64
DefaultUserTOSSetting = 0
TcpMaxDataRetransmissions = 13
DefaultTOSValue = 80
What makes you: "...waking up in the morning so excited about & wanna FLY out of the door ?"
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atillabaysal
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Posts: 14
Joined: Mon Feb 18, 2008 10:02 am

Post by atillabaysal »

thank you very much..perfect.
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atillabaysal
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Posts: 14
Joined: Mon Feb 18, 2008 10:02 am

Post by atillabaysal »

Hello, good days...

Is there any need to make my modem interface as “mtu=1460” ?

Thank you very much in advance.
With kind regards.
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Rollingstone
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Posts: 3161
Joined: Wed Jan 23, 2008 5:50 am
Location: HoChiMinh, Vietnam

Post by Rollingstone »

No need !
What makes you: "...waking up in the morning so excited about & wanna FLY out of the door ?"
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atillabaysal
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Posts: 14
Joined: Mon Feb 18, 2008 10:02 am

Post by atillabaysal »

Hello, good days...
1. According to my tests, download speed is bad for MTU = 1460 .. and better for MTU = 1492
2. I could not determine my mtu value from my internet server...
3- Following cablenut parameters are applied by me...

DefaultReceiveWindow = 921600
DefaultSendWindow = 128000
DisableAddressSharing = 1
InitialLargeBufferCount = 200
InitialMediumBufferCount = 480
InitialSmallBufferCount = 640
LargeBufferSize = 819200
MaxFastTransmit = 64000
MediumBufferSize = 150400
Priority Boost = 0
SmallBufferSize = 12800
TransmitWorker = 32
FastSendDatagramThreshhold = 4096
EnableFastRouteLookup = 1
EnablePMTUDiscovery = 1
IgnorePushBitsOnReceives = 0
GlobalMaxTcpWindowSize = 200376
MaxFreeTcbs = 8000
MaxHashTableSize = 16384
MaxNormLookupMemory = 5000000
SackOpts = 1
SynAttackProtect = 1
Tcp1323Opts = 1
TcpLogLevel = 1
TcpMaxDupAttacks = 3
TcpMaxHalfOpen = 100
TcpMaxHalfOpenRetired = 80
TcpRecvSegmentSize = 1452
TcpSendSegmentSize = 1452
TcpTimedWaitDelay = 30
TcpUseRFC1122UrgentPointer = 0
TcpWindowSize = 200376
MaxConnectionsPer1_0Server = 20
MaxConnectionsPerServer = 10
DefaultTimeToLive = 64
DefaultUserTOSSetting = 0
TcpMaxDataRetransmissions = 6
DefaultTOSValue = 240

4- Please send me parameters for speedguide and cablenut due to last analysis below (mtu=1492).

« SpeedGuide.net TCP Analyzer Results »
Tested on: 08.30.2009 08:34
IP address: 188.3.xxx.xxx
Client OS: Windows XP

TCP options string: 0204058c0103030401010402
MSS: 1420
MTU: 1460
TCP Window: 921600 (NOT multiple of MSS)
RWIN Scaling: 4 bits (2^4=16)
Unscaled RWIN : 57600
Recommended RWINs: 65320, 130640, 261280, 522560, 1045120
BDP limit (200ms): 36864kbps (4608KBytes/s)
BDP limit (500ms): 14746kbps (1843KBytes/s)
MTU Discovery: ON
TTL: 42
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

Finally i am sorry for taking your valueable time. BNest wishes....
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trogers
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Joined: Wed Jan 26, 2005 11:14 pm
Location: Bangkok, Thailand

Post by trogers »

Is this a UK broadband line? If so, MTU may be limited by your ISP.

If MTU is stuck at 1460, RWIN should be 261280 as suggested by the Analyzer report, for a UK 8 mbps line.
"Contentment is not the fulfillment of what you want, but is the realisation of how much you already have" - anon
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trogers
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Joined: Wed Jan 26, 2005 11:14 pm
Location: Bangkok, Thailand

Post by trogers »

atillabaysal wrote:Hello,

En fazla 30 atlamanın üstünde
www-real.wa1.b.yahoo.com [87.248.113.14]'ye izleme yolu :

1 <1 ms <1 ms <1 ms My-Modem [192.168.2.1] => router IP address
2 10 ms 11 ms 10 ms My-UBR [192.168.20.1] => router IP address
Your connection is double NAT - two routers connected back to back. The modem given to you by your ISP already has a built-in router.
"Contentment is not the fulfillment of what you want, but is the realisation of how much you already have" - anon
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atillabaysal
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Posts: 14
Joined: Mon Feb 18, 2008 10:02 am

Post by atillabaysal »

Hello,
My boardband line is not UK, and my ISP is TURKEY KOÇ.NET.
My modem is VoIP Gateways Air 6271
http://www.airties.com/product-details. ... =3&dil=eng
regards.
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trogers
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Posts: 12323
Joined: Wed Jan 26, 2005 11:14 pm
Location: Bangkok, Thailand

Post by trogers »

atillabaysal wrote:Hello, good days...
1. According to my tests, download speed is bad for MTU = 1460 .. and better for MTU = 1492
2. I could not determine my mtu value from my internet server...
3- Following cablenut parameters are applied by me...

DefaultReceiveWindow = 921600
Your router/modem is VOIP and MTU is limited to 1460

When using Cablenut with XP operating system,

DefaultReceiveWindow must be left as a blank.

Any value put into this field will override RWIN settings.
"Contentment is not the fulfillment of what you want, but is the realisation of how much you already have" - anon
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