Need some help

[katatlove]

Hi
my adsl . Upload speed 512 Kbps Download speed 3000kbps
i have some value you give me last time . but today i tested my router . found
mtu changed from 1480 to 1454 .I would like to ask is I only need to be Revise the latest MTU ？Also need to change the other?


Here is the original value

Use the following with TCP Optimizer:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1480
TTL - 64
TCP Receive Window - 253440
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 - 136
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768
Then select "Apply Changes" and reboot to take effect



new TCP/IP analyzer Results

« SpeedGuide.net TCP Analyzer Results »
Tested on: 02.01.2007 19:32
IP address: 222.82.xxx.xxx

TCP options string: 02040586
MSS: 1414
MTU: 1454
TCP Window: 65535 (NOT multiple of MSS)
RWIN Scaling: 0
Unscaled RWIN : 65535
Reccomended RWINs: 65044, 130088, 260176, 520352
BDP limit (200ms): 2621kbps (328KBytes/s)
BDP limit (500ms): 1049kbps (131KBytes/s)
MTU Discovery: ON
TTL: 114
Timestamps: OFF
SACKs: OFF
IP ToS: 00000000 (0)

new mtu test

Pinging [61.128.99.68] with 40 bytes ->bytes=40 time=14ms TTL=250
Pinging [61.128.99.68] with 750 bytes ->bytes=750 time=29ms TTL=250
Pinging [61.128.99.68] with 1125 bytes ->bytes=1125 time=37ms TTL=250
Pinging [61.128.99.68] with 1312 bytes ->bytes=1312 time=40ms TTL=250
Pinging [61.128.99.68] with 1406 bytes ->bytes=1406 time=43ms TTL=250
Pinging [61.128.99.68] with 1453 bytes -> ..fragmented
Pinging [61.128.99.68] with 1430 bytes -> ..fragmented
Pinging [61.128.99.68] with 1418 bytes ->bytes=1418 time=42ms TTL=250
Pinging [61.128.99.68] with 1424 bytes ->bytes=1424 time=43ms TTL=250
Pinging [61.128.99.68] with 1427 bytes -> ..fragmented
Pinging [61.128.99.68] with 1426 bytes ->bytes=1426 time=44ms TTL=250
The largest possible non-fragmented packet is 1426 (1454 - 28 ICMP & IP headers).
You can set your MTU to 1454

my english is poor , I hope you can understand what I wrote .^_^
Thanks again

[mccoffee]

Use the following with TCP Optimizer take another analyzer test make sure mtu has changed.

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU -1500
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 - 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 - 136
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768
Then select "Apply Changes" and reboot

[katatlove]

Thank you

Here is a new test results

« SpeedGuide.net TCP Analyzer Results »
Tested on: 02.02.2007 04:56
IP address: 222.82.xxx.xxx

TCP options string: 020405a00103030e01010402
MSS: 1440
MTU: 1480
TCP Window: 1073725440 (NOT multiple of MSS)
RWIN Scaling: 14
Unscaled RWIN : 65535
Reccomended RWINs: 63360, 126720, 253440, 506880
BDP limit (200ms): 42949018kbps (5368627KBytes/s)
BDP limit (500ms): 17179607kbps (2147451KBytes/s)
MTU Discovery: ON
TTL: 50
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

It seems MTU has not changed ，I can still use the original optimization value ?

[trogers]

Yes, use the same settings.

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1480
TTL - 64
TCP Receive Window - 253440
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 - 136
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768
Then select "Apply Changes" and reboot to take effect

After reboot, test your speed at this website using the test server in Hong Kong:

http://www.speedtest.net/

[katatlove]

thanks
here is my last test
http://www.speedtest.net/result/81668855.png