Is my DSL speed slow? Can someone check my results?

PDubs · Post by **PDubs** » Fri Feb 27, 2009 12:44 am

I was about to do battle with ATT complaining that I'm not getting their "ELITE" speed but was hoping someone could validate my results to see if I am, in fact, getting their advertised speed:

Advertised speed
Downstream Speed: Up to 6.0 Mbps
Upstream Speed: Up to 768 Kbps

ATT throughput test from their site
Download = 652.37 kbps
Upload = 659.84 kbps

« SpeedGuide.net TCP Analyzer Results »
Tested on: 02.27.2009 00:38
IP address: 99.128.xxx.xx
Client OS: Windows XP

TCP options string: 020405ac01010402
MSS: 1452
MTU: 1492
TCP Window: 64512 (NOT multiple of MSS)
RWIN Scaling: 0 bits
Unscaled RWIN : 64512
Recommended RWINs: 63888, 127776, 255552, 511104, 1022208
BDP limit (200ms): 2580kbps (323KBytes/s)
BDP limit (500ms): 1032kbps (129KBytes/s)
MTU Discovery: ON
TTL: 114
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

tracert results
NOTE: It actually took about 12 seconds for the dos box to reply on the screen between hops 1-2, and 2-3

Tracing route to www-real.wa1.b.yahoo.com [209.191.93.52]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms 192.168.1.1
2 8 ms 7 ms 8 ms adsl-99-128-119-254.dsl.austtx.sbcglobal.net [99
.128.119.254]
3 7 ms 8 ms 8 ms 99.171.168.65
4 8 ms 8 ms 8 ms bb1-10g0-0.aus2tx.sbcglobal.net [151.164.188.145
]
5 15 ms 15 ms 14 ms ex3-p12-0.eqdltx.sbcglobal.net [69.220.8.53]
6 15 ms 15 ms 14 ms asn10310-10-yahoo.eqdltx.sbcglobal.net [151.164.
250.10]
7 16 ms 16 ms 16 ms ae1-p101.msr1.mud.yahoo.com [216.115.104.99]
8 19 ms 16 ms 16 ms te-9-1.bas-c1.mud.yahoo.com [68.142.193.9]
9 16 ms 16 ms 16 ms f1.http://www.vip.mud.yahoo.com [209.191.93.52]

Trace complete.

Rollingstone · Post by **Rollingstone** » Fri Feb 27, 2009 4:20 am

Try the following with TCP Optimizer:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1492
TTL - 64
Windows Scaling - check
TCP Receive Window - 127776
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

PDubs · Post by **PDubs** » Sat Feb 28, 2009 12:45 am

Thanks for the tips, seems I have similar results. I made the changes earlier today but wanted to wait until tonight to try and generate data points closer to last test. Following the changes, I rebooted the DSL modem, router, and hard-wired system (XP MCE SP2):

Throughput test
Download = 647.44 kbps
Upload = 658.00 kbps

Speedtest.net
Download = 864 kb/s
Upload = 411 kb/s

« SpeedGuide.net TCP Analyzer Results »
Tested on: 02.28.2009 00:39
IP address: 99.128.xxx.xxx
Client OS: Windows XP

TCP options string: 020405ac0103030201010402
MSS: 1452
MTU: 1492
TCP Window: 261360 (multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 65340
Recommended RWINs: 63888, 127776, 255552, 511104, 1022208
BDP limit (200ms): 10454kbps (1307KBytes/s)
BDP limit (500ms): 4182kbps (523KBytes/s)
MTU Discovery: ON
TTL: 50
Timestamps: OFF
SACKs: ON
IP ToS: 01000000 (64)
Precedence: 010 (immediate)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DiffServ: CS2 010000 (16) - class 2 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.

tracert results
Tracing route to www-real.wa1.b.yahoo.com [209.191.93.52]
over a maximum of 30 hops:

1 1 ms <1 ms 1 ms 192.168.1.1
2 7 ms 7 ms 7 ms adsl-99-128-119-254.dsl.austtx.sbcglobal.net [99
.128.119.254]
3 8 ms 8 ms 8 ms 99.171.168.66
4 8 ms 8 ms 8 ms bb2-10g0-0.aus2tx.sbcglobal.net [151.164.243.247
]
5 15 ms 14 ms 14 ms ex2-p14-0.eqdltx.sbcglobal.net [151.164.41.155]

6 14 ms 14 ms 14 ms asn10310-10-yahoo.eqdltx.sbcglobal.net [151.164.
250.10]
7 15 ms 15 ms 15 ms ae2-p111.msr2.mud.yahoo.com [216.115.104.111]
8 16 ms 15 ms 16 ms te-8-1.bas-c1.mud.yahoo.com [68.142.193.5]
9 16 ms 15 ms 15 ms f1.http://www.vip.mud.yahoo.com [209.191.93.52]

Trace complete.

dlsayremn · Post by **dlsayremn** » Sun Mar 01, 2009 10:54 am

I would definitely give ATT a call. With a 6.0 Mbps connection you should be getting at least minimum of 4.0 Mbps. Even their test shows you are only getting about 15% of what they are charging you for.

Rollingstone · Post by **Rollingstone** » Mon Mar 02, 2009 2:40 am

TCP Window: 261360 (multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 65340
Recommended RWINs: 63888, 127776, 255552, 511104, 1022208

Run TCP Settings I gave again, TCP Window should be 127776.

mccoffee · Post by **mccoffee** » Sun Mar 08, 2009 3:26 am

Rollingstone wrote:Run TCP Settings I gave again, TCP Window should be 127776.

Notice the speed test is in kbs not KBS his resaults were 650kbs kilo bits 8 bits in a byte

650*8 is 5200 your speeds are fine