Optimizing my 12/1 connection

Vecchio · 11-24-09, 05:19 PM

Hi, I recently switched ISP and therefore had to change my TCP settings. I live in Belgium and my provider is Scarlett. The connection I pay for is a 12 down, 1 up.

« SpeedGuide.net TCP Analyzer Results »
Tested on: 11.24.2009 17:12
IP address: 83.134.xxx.xxx
Client OS: Windows XP

TCP options string: 020405840103030201010402
MSS: 1412
MTU: 1452
TCP Window: 259808 (multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 64952
Recommended RWINs: 64952, 129904, 259808, 519616, 1039232
BDP limit (200ms): 10392kbps (1299KBytes/s)
BDP limit (500ms): 4157kbps (520KBytes/s)
MTU Discovery: ON
TTL: 39
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

I am behind a Router so I am unable to edit MTU, but I am aware it needs to be 1500. I guess it's the same for TTL which needs to be 64?

akbarri · 11-25-09, 01:42 AM

To see ur default MTU from provider Use the following with TCP Optimizer & Post new TCP Analizer:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - blank
TTL - 64
TCP Receive Window - blank
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Windows Scaling - uncheck
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 - blank
ToS: DefaultTOSValue - blank
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768

Vecchio · 11-25-09, 07:25 AM

« SpeedGuide.net TCP Analyzer Results »
Tested on: 11.25.2009 07:24
IP address: 81.11.xxx.xx
Client OS: Windows XP

TCP options string: 0204001c0103030e01010402
MSS: 28
MTU: 68
TCP Window: 1073725440 (NOT multiple of MSS)
RWIN Scaling: 14 bits (2^14=16384)
Unscaled RWIN : 65535
Recommended RWINs: 65520, 131040, 262080, 524160, 1048320
BDP limit (200ms): 42949018kbps (5368627KBytes/s)
BDP limit (500ms): 17179607kbps (2147451KBytes/s)
MTU Discovery: OFF
TTL: 40
Timestamps: OFF
SACKs: ON
IP ToS: 00000011 (3)
Precedence: 000 (routine)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 1 (low cost)
Check bit: 1 (incorrect)
DiffServ: CS0 000000 (0) - class 0, default traffic (RFC 2474).

Seems a bit weird to me...?

trogers · 11-25-09, 08:14 AM

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
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

Post a new TCP Analyzer report after rebooting the comp to see if MTU goes up to 1492.

akbarri · 11-25-09, 09:21 AM

just to make sure, did u use cfos speed??

Vecchio · 11-25-09, 01:38 PM

« SpeedGuide.net TCP Analyzer Results »
Tested on: 11.25.2009 13:34
IP address: 81.11.xxx.xx
Client OS: Windows XP

TCP options string: 020405840103030e01010402
MSS: 1412
MTU: 1452
TCP Window: 1073725440 (NOT multiple of MSS)
RWIN Scaling: 14 bits (2^14=16384)
Unscaled RWIN : 65535
Recommended RWINs: 64952, 129904, 259808, 519616, 1039232
BDP limit (200ms): 42949018kbps (5368627KBytes/s)
BDP limit (500ms): 17179607kbps (2147451KBytes/s)
MTU Discovery: ON
TTL: 40
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

Nope, never heared of cfos speed. MTU set to 1500, but doesn't go higher than 1452. Most likely the router?

trogers · 11-25-09, 01:52 PM

Quote:

Originally Posted by Vecchio

Nope, never heared of cfos speed. MTU set to 1500, but doesn't go higher than 1452. Most likely the router?

Could be that you need to update your router's firmware. Do a search in Google with your router model number.

In the meantime,

Try the following with TCP Optimizer:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1452
TTL - 64
Windows Scaling - checked
TCP Receive Window - 259808
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

akbarri · 11-25-09, 01:53 PM

yap

like mine MTU limited @ 1400 by ISP

11-24-09, 05:19 PM	#1
Vecchio Junior Member Join Date: Nov 2005 Posts: 5	Optimizing my 12/1 connection Hi, I recently switched ISP and therefore had to change my TCP settings. I live in Belgium and my provider is Scarlett. The connection I pay for is a 12 down, 1 up. « SpeedGuide.net TCP Analyzer Results » Tested on: 11.24.2009 17:12 IP address: 83.134.xxx.xxx Client OS: Windows XP TCP options string: 020405840103030201010402 MSS: 1412 MTU: 1452 TCP Window: 259808 (multiple of MSS) RWIN Scaling: 2 bits (2^2=4) Unscaled RWIN : 64952 Recommended RWINs: 64952, 129904, 259808, 519616, 1039232 BDP limit (200ms): 10392kbps (1299KBytes/s) BDP limit (500ms): 4157kbps (520KBytes/s) MTU Discovery: ON TTL: 39 Timestamps: OFF SACKs: ON IP ToS: 00000000 (0) I am behind a Router so I am unable to edit MTU, but I am aware it needs to be 1500. I guess it's the same for TTL which needs to be 64?

11-25-09, 01:42 AM	#2
akbarri Regular Member Join Date: Dec 2008 Location: Wild Jungle, 3G Posts: 413	To see ur default MTU from provider Use the following with TCP Optimizer & Post new TCP Analizer: General Settings tab: Custom settings - check Modify All Network Adapters - check network adapter selection - your NIC MTU - blank TTL - 64 TCP Receive Window - blank MTU Discovery - Yes Black Hole Detect - No Selective Acks - Yes Max Duplicate ACKs - 2 TCP 1323 Options: Windows Scaling - uncheck 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 - blank ToS: DefaultTOSValue - blank MaxNegativeCacheTtl - 0 NetFailureCacheTime - 0 NegativeSOACache Time - 0 LAN Request Buffer Size - 32768 __________________ # OS: Windows XP SP2, Ubuntu 8.04 LTS # AV: KIS 2010 # # Modem: Sierra 881U 3G HSDPA # Browser: Chrome 4, Firefox 3.5 #

11-25-09, 09:21 AM	#5
akbarri Regular Member Join Date: Dec 2008 Location: Wild Jungle, 3G Posts: 413	just to make sure, did u use cfos speed?? __________________ # OS: Windows XP SP2, Ubuntu 8.04 LTS # AV: KIS 2010 # # Modem: Sierra 881U 3G HSDPA # Browser: Chrome 4, Firefox 3.5 #

11-25-09, 01:38 PM	#6
Vecchio Junior Member Join Date: Nov 2005 Posts: 5	« SpeedGuide.net TCP Analyzer Results » Tested on: 11.25.2009 13:34 IP address: 81.11.xxx.xx Client OS: Windows XP TCP options string: 020405840103030e01010402 MSS: 1412 MTU: 1452 TCP Window: 1073725440 (NOT multiple of MSS) RWIN Scaling: 14 bits (2^14=16384) Unscaled RWIN : 65535 Recommended RWINs: 64952, 129904, 259808, 519616, 1039232 BDP limit (200ms): 42949018kbps (5368627KBytes/s) BDP limit (500ms): 17179607kbps (2147451KBytes/s) MTU Discovery: ON TTL: 40 Timestamps: OFF SACKs: ON IP ToS: 00000000 (0) Nope, never heared of cfos speed. MTU set to 1500, but doesn't go higher than 1452. Most likely the router? Last edited by Vecchio; 11-25-09 at 01:46 PM.

11-25-09, 01:53 PM	#8
akbarri Regular Member Join Date: Dec 2008 Location: Wild Jungle, 3G Posts: 413	yap like mine MTU limited @ 1400 by ISP __________________ # OS: Windows XP SP2, Ubuntu 8.04 LTS # AV: KIS 2010 # # Modem: Sierra 881U 3G HSDPA # Browser: Chrome 4, Firefox 3.5 #

11-25-09, 07:25 AM	#3
Vecchio Junior Member Join Date: Nov 2005 Posts: 5	« SpeedGuide.net TCP Analyzer Results » Tested on: 11.25.2009 07:24 IP address: 81.11.xxx.xx Client OS: Windows XP TCP options string: 0204001c0103030e01010402 MSS: 28 MTU: 68 TCP Window: 1073725440 (NOT multiple of MSS) RWIN Scaling: 14 bits (2^14=16384) Unscaled RWIN : 65535 Recommended RWINs: 65520, 131040, 262080, 524160, 1048320 BDP limit (200ms): 42949018kbps (5368627KBytes/s) BDP limit (500ms): 17179607kbps (2147451KBytes/s) MTU Discovery: OFF TTL: 40 Timestamps: OFF SACKs: ON IP ToS: 00000011 (3) Precedence: 000 (routine) Delay: 0 (normal delay) Throughput: 0 (normal throughput) Reliability: 0 (normal reliability) Cost: 1 (low cost) Check bit: 1 (incorrect) DiffServ: CS0 000000 (0) - class 0, default traffic (RFC 2474). Seems a bit weird to me...?

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