Help me diagnose slow WIRED connection!

pzinser · Post by **pzinser** » Sat Nov 27, 2010 1:46 pm

I have a 3mbit download speed from my local ISP (a DSL service). When I'm downloading a file, I usually see speeds of ~300k/sec but as of a few days ago I'm only getting~30k/sec. Called the ISP and they say all is well on their end, it must be a virus or something with my machine.
I ran several scans with different products, which find no problems. I then tried hooking up to another computer I have, but rarely use, and have the SAME slow connections speed, which makes me doubtful it's an issue on my end.

Nevertheless, I followed some instructions for cleaning DNS history, cookies, history, etc. I tried to "rollback" my network adapter driver, but that option was "greyed-out" and unavailable. I then updated my network adapter driver from the manufacturer's website. NO improvement.

When I login into my DSL modem (D-Link 2320), however, it looks as if it "sees" the correct high download/upload speeds that I'm paying for!!

I really don't know what to do/try next?
Any suggestions would be very appreciated.
Thanks.

Rocky_Grim · Post by **Rocky_Grim** » Sat Nov 27, 2010 5:41 pm

If you place your cursor over the word Broadband at the top of this page you will see broadband tools. Click SG TCP/IP Analyzer. Post the results of that page here. Also, run a speed test at http://www.speedtest.net to the closest location to you. Post the results of the speed test as well.

pzinser · Post by **pzinser** » Sat Nov 27, 2010 10:12 pm

Results:

« SpeedGuide.net TCP Analyzer Results »
Tested on: 11.27.2010 21:57
IP address: 67.211.xx.xxx
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: 52
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

http://www.speedtest.net/result/1048142994.png

Rocky_Grim · Post by **Rocky_Grim** » Sat Nov 27, 2010 10:36 pm

In the last couple days when you started to notice the slow speeds did you make any changes to your modem or router setup? Do you have any other software, downloads, computers, or devices using the connection? If you have wireless setup is it secure?

pzinser · Post by **pzinser** » Sat Nov 27, 2010 10:51 pm

No changes to anything. No other devices presently using the connection. Malwarel scans negative on all. I even eliminated the router and connected directly through the modem. I posted some diagnostic readings from the modem below. So it "seems" the modem sees 6mbit download speed (the isp temporarily has bumped me to 6mbit from my usual 3mbit for the weekend to see if it makes a difference.) Yet I'm getting these terrible download speeds. I'm stumped. Is there SOMETHING on the ISP end that could be causing this?

Device Info

Board ID: D-1P
Software Version: GE_DSL-2320B_3-06-04-1G00.A2pB021c.d19b
Bootloader (CFE) Version: 1.0.37-6.5

This information reflects the current status of your DSL connection.

Line Rate - Upstream (Kbps): 1360
Line Rate - Downstream (Kbps): 6142
LAN IP Address: 192.168.1.1
Default Gateway:
Primary DNS Server: 192.168.1.1
Secondary DNS Server: 192.168.1.1

br_0_35 Diagnostics

Your modem is capable of testing your DSL connection. The individual tests are listed below. If a test displays a fail status, click "Rerun Diagnostic Tests" at the bottom of this page to make sure the fail status is consistent. If the test continues to fail, click "Help" and follow the troubleshooting procedures.

Test the connection to your local network

Test your ENET Connection: PASS Help
Test your USB Connection: DOWN Help

Test the connection to your DSL service provider
Test ADSL Synchronization: PASS Help
Test ATM OAM F5 segment ping: FAIL Help
Test ATM OAM F5 end-to-end ping: FAIL Help

trogers · Post by **trogers** » Sat Nov 27, 2010 11:37 pm

Do a tracert to http://www.yahoo.com and post.

pzinser · Post by **pzinser** » Sun Nov 28, 2010 12:56 pm

Traceroute Output
FROM getnet.net TO http://www.yahoo.com.

traceroute to http://www.yahoo.com (72.30.2.43), 30 hops max, 40 byte packets
1 daisy.getnet.net (216.19.223.119) 0.039 ms 0.012 ms 0.012 ms
2 phnx-gsr0.getnet.net (216.19.201.241) 0.462 ms 0.449 ms 0.434 ms
3 65.49.129.173 (65.49.129.173) 1.402 ms 1.388 ms 1.374 ms
4 six.yahoo.com (206.81.80.98) 37.929 ms 37.945 ms 37.931 ms
5 ae-6.pat1.pao.yahoo.com (216.115.110.42) 56.177 ms 56.170 ms 56.157 ms
6 ae-1-d420.msr1.sk1.yahoo.com (216.115.106.161) 63.475 ms 56.798 ms ae-0-d210.msr2.sk1.yahoo.com (216.115.106.133) 56.612 ms
7 te-9-1.bas-k2.sk1.yahoo.com (68.180.160.15) 57.250 ms te-8-1.bas-k1.sk1.yahoo.com (68.180.160.9) 57.154 ms te-9-1.bas-k1.sk1.yahoo.com (68.180.160.13) 57.175 ms
8 * * *
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
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30 * * *

trogers · Post by **trogers** » Sun Nov 28, 2010 9:17 pm

Not a traceroute. A tracert.

Press Start. Key in cmd in the box and press enter.

In the popup black box

C:\>tracert yahoo.com

pzinser · Post by **pzinser** » Sun Nov 28, 2010 10:51 pm

C:\>tracert yahoo.com

Tracing route to yahoo.com [69.147.125.65]
over a maximum of 30 hops:

1 31 ms 33 ms 33 ms dsl-67-211-83-1.matisp.net [67.211.83.1]
2 34 ms 33 ms 33 ms corp-67-211-80-129.matinetworks.net [67.211.80.1
29]
3 36 ms 35 ms 38 ms rtr-int-a2-0-32.gw.ala.tularosa.net [72.0.47.9]

4 34 ms 34 ms 34 ms rtr-int-eth0.bdr00.tul.tularosa.net [66.18.167.2
35]
5 43 ms 43 ms 44 ms ge-9-43.car1.Phoenix1.Level3.net [4.53.108.145]

6 44 ms 44 ms 44 ms ae-2-5.bar1.Phoenix1.Level3.net [4.69.148.118]
7 67 ms 69 ms 72 ms ae-8-8.ebr1.Dallas1.Level3.net [4.69.133.30]
8 80 ms 70 ms 73 ms ae-83-88.ebr3.Dallas1.Level3.net [4.69.146.84]
9 92 ms 89 ms 89 ms ae-7-7.ebr3.Atlanta2.Level3.net [4.69.134.22]
10 102 ms 101 ms 101 ms ae-2-2.ebr1.Washington1.Level3.net [4.69.132.86]

11 104 ms 107 ms 108 ms ae-61-61.csw1.Washington1.Level3.net [4.69.134.1
30]
12 102 ms 101 ms 103 ms ae-11-69.car1.Washington1.Level3.net [4.68.17.3]

13 194 ms 101 ms 101 ms YAHOO-INC.car1.Washington1.Level3.net [4.79.228.
2]
14 103 ms 103 ms 103 ms ae-1-d150.msr2.re1.yahoo.com [216.115.108.21]
15 102 ms 110 ms 103 ms te-9-4.bas-a2.re1.yahoo.com [66.196.112.203]
16 102 ms 103 ms 103 ms ir1.fp.vip.re1.yahoo.com [69.147.125.65]

Trace complete.

C:\>

questions · Post by **questions** » Mon Nov 29, 2010 1:37 am

trogers · Post by **trogers** » Mon Nov 29, 2010 10:18 am

Tracert shows no issue with signal quality.

Test your line with another comp (laptop). If speed is still slow, issue could be at the ISP's central office, or they are capping you.

If speed of the laptop is normal, issue is within your comp, like botnet etc.

pzinser · Post by **pzinser** » Mon Nov 29, 2010 8:18 pm

Turns out it WAS a problem on the ISP end. Please close this thread. Thanks for everyone's suggestions.

flower88 · Post by **flower88** » Mon Jan 10, 2011 9:28 pm

It is a nice post.....