I have Comcast cable internet. Windows XP. I'm not sure what the advertised speeds are. But my speed tests on speakeasy:
Seattle, WA: 17000 kbps ~ 20000 kpbs and upload: 5000 kpbs ~ 6000 kbps
Chicago, IL: 10000 ~ 15000 and upload 1500 ~ 2000
NYC, NY: 10000 and upload 1200-1500
By default, I think my MTU had no value until I used optimal settings on tcpoptimizer (And, my Netgear Router MTU size says its 1492)
« SpeedGuide.net TCP Analyzer Results »
Tested on: 11.06.2008 23:42
IP address: 71.231.xxx.xx
TCP options string: 020405b40103030401010402
MSS: 1460
MTU: 1500
TCP Window: 1027840 (multiple of MSS)
RWIN Scaling: 4 bits (2^4=16)
Unscaled RWIN : 64240
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 41114kbps (5139KBytes/s)
BDP limit (500ms): 16445kbps (2056KBytes/s)
MTU Discovery: ON
TTL: 45
Timestamps: OFF
SACKs: ON
IP ToS: 00100000 (32)
Precedence: 001 (priority)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DiffServ: CS1 001000 (8) - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.
(I believe the above is an analyzed report with optimal settings on tcp optimizer) and i'm not sure what to set the Connection speed bar to. and when putting in custom settings, would i have to restore windows default settings first?
so i'm also wondering since the analyzer said i have 1500 mtu, do i go and change the 1492 in my router settings to 1500? or do i change the mtu size to 1492 in optimal settings until someone helps me with custom settings? thanks for your help!
Any tweaks for my setup? :O
MTU for ComCast should be set to 1500 - for cable internet. Only ADSL internet uses MTU at 1492.
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 - 513920
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 - 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
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 - 513920
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 - 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
"Contentment is not the fulfillment of what you want, but is the realisation of how much you already have" - anon
So do I set my router MTU to 1500 too? Under general settings, what do I set my connection speed bar to?
I took speed tests with my router mtu left the same and being changed. Results are reallly slow.
Seattle, WA: 9000 kbps download (it took a long time to finish. Before, the test would sky rocket up to 20,000 kpbs and finish pretty quickly) my upload seems to be the same: 5700 kpbs
2nd test: 9500 dl / 5900 ul
3rd test: 21000 dl / 5100 up
4th test: 14000 dl / 5600 up
After looking at the comcast site, I think I got the high-speed internet with powerboost with speeds up to 16mbps
I took speed tests with my router mtu left the same and being changed. Results are reallly slow.
Seattle, WA: 9000 kbps download (it took a long time to finish. Before, the test would sky rocket up to 20,000 kpbs and finish pretty quickly) my upload seems to be the same: 5700 kpbs
2nd test: 9500 dl / 5900 ul
3rd test: 21000 dl / 5100 up
4th test: 14000 dl / 5600 up
After looking at the comcast site, I think I got the high-speed internet with powerboost with speeds up to 16mbps
MTU or MRU at the router should be set to 1500 for cable internet.nodeuce wrote:So do I set my router MTU to 1500 too? Under general settings, what do I set my connection speed bar to?
I took speed tests with my router mtu left the same and being changed. Results are reallly slow.
Seattle, WA: 9000 kbps download (it took a long time to finish. Before, the test would sky rocket up to 20,000 kpbs and finish pretty quickly) my upload seems to be the same: 5700 kpbs
2nd test: 9500 dl / 5900 ul
3rd test: 21000 dl / 5100 up
4th test: 14000 dl / 5600 up
After looking at the comcast site, I think I got the high-speed internet with powerboost with speeds up to 16mbps
No need to use the connection speed bar in the Optimizer when using custom settings.
"Contentment is not the fulfillment of what you want, but is the realisation of how much you already have" - anon
here are my results:
Seattle, WA: 3 tests
20061 // 5807
17472 // 5669
18907 // 5872
Chicago, IL: 3 tests
24456 // 1706
19210 // 1733
20973 // 1741
NYC, NY: 3 tests
9665 // 1259
9676 // 1277
10046 // 1268
Would this be just about the same as before? Or could there be more tweaking done? Here's a new analyzer report:
« SpeedGuide.net TCP Analyzer Results »
Tested on: 11.10.2008 23:09
IP address: 71.231.xxx.xx
TCP options string: 020405b40103030301010402
MSS: 1460
MTU: 1500
TCP Window: 513920 (multiple of MSS)
RWIN Scaling: 3 bits (2^3=8)
Unscaled RWIN : 64240
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 20557kbps (2570KBytes/s)
BDP limit (500ms): 8223kbps (1028KBytes/s)
MTU Discovery: ON
TTL: 45
Timestamps: OFF
SACKs: ON
IP ToS: 00100000 (32)
Precedence: 001 (priority)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DiffServ: CS1 001000 (8) - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.
Seattle, WA: 3 tests
20061 // 5807
17472 // 5669
18907 // 5872
Chicago, IL: 3 tests
24456 // 1706
19210 // 1733
20973 // 1741
NYC, NY: 3 tests
9665 // 1259
9676 // 1277
10046 // 1268
Would this be just about the same as before? Or could there be more tweaking done? Here's a new analyzer report:
« SpeedGuide.net TCP Analyzer Results »
Tested on: 11.10.2008 23:09
IP address: 71.231.xxx.xx
TCP options string: 020405b40103030301010402
MSS: 1460
MTU: 1500
TCP Window: 513920 (multiple of MSS)
RWIN Scaling: 3 bits (2^3=8)
Unscaled RWIN : 64240
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 20557kbps (2570KBytes/s)
BDP limit (500ms): 8223kbps (1028KBytes/s)
MTU Discovery: ON
TTL: 45
Timestamps: OFF
SACKs: ON
IP ToS: 00100000 (32)
Precedence: 001 (priority)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DiffServ: CS1 001000 (8) - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.
Requesting for a checkup on my internet settings, I've kept my computer clean and secure these past months and it seems like my speeds are going downhill, I've done a modem/router reset and such with proper placements, spyware/malware/virus scans, etc. here's my analyzer results:
« SpeedGuide.net TCP Analyzer Results »
Tested on: 11.24.2009 22:53
IP address: 71.231.xxx.xx
Client OS: Windows XP
TCP options string: 020405b40103030301010402
MSS: 1460
MTU: 1500
TCP Window: 513920 (multiple of MSS)
RWIN Scaling: 3 bits (2^3=8)
Unscaled RWIN : 64240
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 20557kbps (2570KBytes/s)
BDP limit (500ms): 8223kbps (1028KBytes/s)
MTU Discovery: ON
TTL: 43
Timestamps: OFF
SACKs: ON
IP ToS: 00100000 (32)
Precedence: 001 (priority)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DiffServ: CS1 001000 (8) - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.
This is about the average of my speedtests now:
11/24/2009: http://www.speedtest.net/result/632963622.png
Opposed to what I had throughout the year:
8/20/2009: http://www.speedtest.net/result/544705167.png
7/14/2009: http://www.speedtest.net/result/516773347.png
3/25/2009: http://www.speedtest.net/result/436374442.png
Not to mention the unusual ping increase... I haven't made any changes to my internet connection, but I guess it would be possible that Comcast is at fault, but do let me know if there are any other possibilities. Thanks
« SpeedGuide.net TCP Analyzer Results »
Tested on: 11.24.2009 22:53
IP address: 71.231.xxx.xx
Client OS: Windows XP
TCP options string: 020405b40103030301010402
MSS: 1460
MTU: 1500
TCP Window: 513920 (multiple of MSS)
RWIN Scaling: 3 bits (2^3=8)
Unscaled RWIN : 64240
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 20557kbps (2570KBytes/s)
BDP limit (500ms): 8223kbps (1028KBytes/s)
MTU Discovery: ON
TTL: 43
Timestamps: OFF
SACKs: ON
IP ToS: 00100000 (32)
Precedence: 001 (priority)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DiffServ: CS1 001000 (8) - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.
This is about the average of my speedtests now:
11/24/2009: http://www.speedtest.net/result/632963622.png
Opposed to what I had throughout the year:
8/20/2009: http://www.speedtest.net/result/544705167.png
7/14/2009: http://www.speedtest.net/result/516773347.png
3/25/2009: http://www.speedtest.net/result/436374442.png
Not to mention the unusual ping increase... I haven't made any changes to my internet connection, but I guess it would be possible that Comcast is at fault, but do let me know if there are any other possibilities. Thanks
Do a tracert to http://www.yahoo.com and post.
To do a tracert, click 'Start' and then 'Run'. Type "cmd" into the box and click 'ok'.
A DOS black screen will appear. Type after the C:\>
tracert http://www.yahoo.com
and press enter key
When test is completed, move mouse cursor to the DOS black screen, click right and choose 'select all'.
Move mouse cursor to the Quick Reply box of this forum, click right and 'paste'.
To do a tracert, click 'Start' and then 'Run'. Type "cmd" into the box and click 'ok'.
A DOS black screen will appear. Type after the C:\>
tracert http://www.yahoo.com
and press enter key
When test is completed, move mouse cursor to the DOS black screen, click right and choose 'select all'.
Move mouse cursor to the Quick Reply box of this forum, click right and 'paste'.
"Contentment is not the fulfillment of what you want, but is the realisation of how much you already have" - anon
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
E:\Documents and Settings\Kai>tracert http://www.yahoo.com
Tracing route to www-real.wa1.b.yahoo.com [209.131.36.158]
over a maximum of 30 hops:
1 7 ms <1 ms <1 ms 192.168.1.1
2 7 ms 7 ms 7 ms 73.98.46.1
3 8 ms 9 ms 7 ms 68.87.205.193
4 7 ms 12 ms 7 ms te-0-1-0-0-ar01.burien.wa.seattle.comcast.net [6
8.86.96.125]
5 10 ms 10 ms 9 ms be-30-ar01.seattle.wa.seattle.comcast.net [68.85
.240.69]
6 9 ms 17 ms 7 ms pos-0-11-0-0-cr01.seattle.wa.ibone.comcast.net [
68.86.90.213]
7 13 ms 13 ms 15 ms pos-0-9-0-0-cr01.portland.or.ibone.comcast.net [
68.86.85.102]
8 25 ms 25 ms 25 ms pos-1-12-0-0-cr01.sacramento.ca.ibone.comcast.ne
t [68.86.86.229]
9 28 ms 30 ms 29 ms pos-0-9-0-0-cr01.sanjose.ca.ibone.comcast.net [6
8.86.85.181]
10 35 ms 30 ms 31 ms pos-0-0-0-0-pe01.11greatoaks.ca.ibone.comcast.ne
t [68.86.86.50]
11 * 37 ms 35 ms 75.149.228.254
12 34 ms 35 ms 35 ms Vlan1104.icore1.PDI-PaloAlto.as6453.net [209.58.
116.10]
13 31 ms 32 ms 31 ms if-13-0-0-1145.mcore4.PDI-PaloAlto.as6453.net [2
16.6.86.45]
14 37 ms 30 ms 28 ms ix-11-0-4.mcore4.PDI-PaloAlto.as6453.net [207.45
.213.130]
15 29 ms 30 ms 31 ms ae1-p151.msr2.sp1.yahoo.com [216.115.107.79]
16 30 ms 29 ms 31 ms te-9-1.bas-a1.sp1.yahoo.com [209.131.32.21]
17 30 ms 30 ms 29 ms f1.http://www.vip.sp1.yahoo.com [209.131.36.158]
Trace complete.
(C) Copyright 1985-2001 Microsoft Corp.
E:\Documents and Settings\Kai>tracert http://www.yahoo.com
Tracing route to www-real.wa1.b.yahoo.com [209.131.36.158]
over a maximum of 30 hops:
1 7 ms <1 ms <1 ms 192.168.1.1
2 7 ms 7 ms 7 ms 73.98.46.1
3 8 ms 9 ms 7 ms 68.87.205.193
4 7 ms 12 ms 7 ms te-0-1-0-0-ar01.burien.wa.seattle.comcast.net [6
8.86.96.125]
5 10 ms 10 ms 9 ms be-30-ar01.seattle.wa.seattle.comcast.net [68.85
.240.69]
6 9 ms 17 ms 7 ms pos-0-11-0-0-cr01.seattle.wa.ibone.comcast.net [
68.86.90.213]
7 13 ms 13 ms 15 ms pos-0-9-0-0-cr01.portland.or.ibone.comcast.net [
68.86.85.102]
8 25 ms 25 ms 25 ms pos-1-12-0-0-cr01.sacramento.ca.ibone.comcast.ne
t [68.86.86.229]
9 28 ms 30 ms 29 ms pos-0-9-0-0-cr01.sanjose.ca.ibone.comcast.net [6
8.86.85.181]
10 35 ms 30 ms 31 ms pos-0-0-0-0-pe01.11greatoaks.ca.ibone.comcast.ne
t [68.86.86.50]
11 * 37 ms 35 ms 75.149.228.254
12 34 ms 35 ms 35 ms Vlan1104.icore1.PDI-PaloAlto.as6453.net [209.58.
116.10]
13 31 ms 32 ms 31 ms if-13-0-0-1145.mcore4.PDI-PaloAlto.as6453.net [2
16.6.86.45]
14 37 ms 30 ms 28 ms ix-11-0-4.mcore4.PDI-PaloAlto.as6453.net [207.45
.213.130]
15 29 ms 30 ms 31 ms ae1-p151.msr2.sp1.yahoo.com [216.115.107.79]
16 30 ms 29 ms 31 ms te-9-1.bas-a1.sp1.yahoo.com [209.131.32.21]
17 30 ms 30 ms 29 ms f1.http://www.vip.sp1.yahoo.com [209.131.36.158]
Trace complete.
New system, any tweaks necessary? My internet provider is still the same (Comcast) -- My maximum download speed is supposedly 1.5MB/s. Occasionally it would exceed that speed up to 2MB/s.
« SpeedGuide.net TCP Analyzer Results »
Tested on: 07.20.2010 18:48
IP address: 71.231.xxx.xx
Client OS: Windows 7
TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 65700 (multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 16425
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 2628kbps (329KBytes/s)
BDP limit (500ms): 1051kbps (131KBytes/s)
MTU Discovery: ON
TTL: 113
Timestamps: OFF
SACKs: ON
IP ToS: 00100000 (32)
Precedence: 001 (priority)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DSCP (DiffServ): CS1 001000 (8) - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.
« SpeedGuide.net TCP Analyzer Results »
Tested on: 07.20.2010 18:48
IP address: 71.231.xxx.xx
Client OS: Windows 7
TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 65700 (multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 16425
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 2628kbps (329KBytes/s)
BDP limit (500ms): 1051kbps (131KBytes/s)
MTU Discovery: ON
TTL: 113
Timestamps: OFF
SACKs: ON
IP ToS: 00100000 (32)
Precedence: 001 (priority)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DSCP (DiffServ): CS1 001000 (8) - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.
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Rocky_Grim
- Posts: 351
- Joined: Wed Feb 26, 2003 1:51 pm
- Location: New Castle PA