Intermittent ADSL network problems

sixfootjames

Member
Joined
Jan 10, 2014
Messages
23
Hi,

This is part of an ongoing problem I have had for a long time now and I am beyond words with all of it.
For over a month now (and this happens every two to three months) my line will drop intermittently.

This is my setup at home

  • 10Mb ADSL line - 900m from the Strand Exchange
  • Home network wired from the socket to my desk - no extension cables
  • DuoPlus Router (Had a Netgear DGN2000 that apparently later had known problems)
  • Two PC's, One laptop one Desktop hardwired by CAT5 cable
  • Desktop, Windows 7 Pro And Laptop, Windows 7 Home Premium
  • WiFi for Android devices, two Galaxy S4's, Galaxy 10.1 Tablet, Samsung Television

These are the exact same steps I follow every time I have a network related problem

  • Call Telkom, ask them to reset my ports.
  • If that doesn't work, I call Afrihost and ask if there are known problems on their network.
  • If no, I ask if there are lines that have been picked up and broken by a ship on the coast of Africa because that has happened too.
  • If they say no, I make contact with someone I know from Telkom Strand Exchange and ask if there are problems there as this is normally where the problem ends up.
  • I will also go through the speed tests using the Telkom Guest account and do line speed tests with the account.
  • The DSL light remains constant as normal and as if connected.
  • The internet light flashes as normal as if data is being transferred.

This is what else has taken place...

  • My line has already been downgraded and upgraded multiple times from 10Mbps to 8Mbps to 6Mbps - not solved anything.
  • Telkom have been out to my house, tested the line at my desk and it failed. (And they have been to my house numerous times before in the past)
  • Then went to the socket where the line comes into the house and it passed which the technician then said that the extension cable I have is the reason for the problem.
  • I asked if he was sure this was not an intermittent moment where the line does run normally and he assured me it was the reason.
  • He then changed the cable and tested it again from my desk where it worked.
  • He left, and not moments after he had gone we had the problem again!
  • The technicians come and they blame Afrihost. I speak to Afrihost and they blame Telkom. So who does one believe?
  • I have sat the better part of 6 hours of this month on the line to 10210 and blood spurting larva from my pores because I am this frustrated!
  • I have bought additional data on my 8Ta (and we have Vodacom) dongle but this becomes incredibly expensive.
  • I have spoken to Roshini Govender and Sam Kudoon, two supervisors at Telkom Call Center whoo have been monitoring my network.
  • They report no problems with the network from their end when I tell them I can see problems using the network tools below during the times the tools report the faults.

I have now managed to find three tools to monitor my traffic.
  • PingPlotter
  • Wireshark
  • HostMyCall.com
  • Afrihosts own network monitoring tools

I will keep a log here with the hope that community might be able to help me resolve this problem.
 
Last edited:

sixfootjames

Member
Joined
Jan 10, 2014
Messages
23
This is happening right now.
14067076003_71cf9c2909_b.jpg
 

Rickster

EVGA Fanatic
Joined
Jul 31, 2012
Messages
20,429
8/10 for the amount of detail in the post, but you left out your line stats.

Please post line stats.
 

sixfootjames

Member
Joined
Jan 10, 2014
Messages
23
8/10 for the amount of detail in the post, but you left out your line stats.

Please post line stats.

Happy to supply it Rickster, but not sure exactly what you're after. Will post it as soon as you let me know. Is it the speedtest you're after?
 

nivek

Honorary Master
Joined
Mar 25, 2005
Messages
10,271
where do you live? i have a similar problem, and im not on afrihost

edit: re-read your post, our problems are different, mine is line noise and i lose sync
 

sixfootjames

Member
Joined
Jan 10, 2014
Messages
23
Just installed new updates to Windows machine, rebooted and problem still exists. (Process of elmination)
14059677995_73ff072130_b.jpg
 

sixfootjames

Member
Joined
Jan 10, 2014
Messages
23
Latest Afrihost test results.

Ping Test:

ping 197.242.144.102

Request timeout for icmp_seq 1
64 bytes from 197.242.144.102: icmp_req=2 ttl=58 time=310 ms
64 bytes from 197.242.144.102: icmp_req=3 ttl=58 time=351 ms
Request timeout for icmp_seq 4
Request timeout for icmp_seq 5


ping 8.8.8.8

Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
Request timeout for icmp_seq 4
Request timeout for icmp_seq 5


Trace Test:

traceroute -n 197.242.144.102

1 10.0.0.2 1 ms 2 ms
2 Request timed out *
105.236.11.1 95 ms
3 Request timed out * *
4 Request timed out * *
5 Request timed out * *
6 Request timed out * *
7 Request timed out * *
8 Request timed out * *
9 Request timed out * *
10 Request timed out *
11 Request timed out *
12 Request timed out *
13 Request timed out *


traceroute -n 8.8.8.8

1 10.0.0.2 1 ms
2 Request timed out *
3 Request timed out *
4 Request timed out *


DNS Test:

nslookup www.afrihost.com

** server can't find thisshouldfail.com: NXDOMAIN


nslookup www.google.com

** server can't find thisshouldfail.com: NXDOMAIN


nslookup thishouldfail.afrihost.com

** server can't find thisshouldfail.com: NXDOMAIN
 

sixfootjames

Member
Joined
Jan 10, 2014
Messages
23
I had a similar problem last year.. on the advice of someone on the forum I had Telkom reduce my line speed for testing purposes, and it worked perfectly at 6MB

Thanks Nivek, I've edited my original post to include that solution too. I've been moved from 10Mbps, to 8Mbps to 6 Mbps. That worked for some time but we're back to the same issue again.
 

Yotch

Expert Member
Joined
Dec 9, 2006
Messages
3,198
You need to look carefully at your line statistics as mentioned above. If you are 900m from your exchange your downstream attenuation should be close to 13dB with upstream attenuation presumably lower than that. Your downstream noise margin would be expected to be above 20dB with the upstream margin probably around 10dB. You also need to look at whether these figures stay relatively constant or fluctuate suddenly. I would also disable uPnP in your router and only connect to the router with one Windows 7 device to eliminate any other possible causes. I would also remove all line filters and additional telephones/extension leads and just connect the router directly to the telephone socket. Monitor the situation to see whether there is any improvement. You could also look at the CRC, FEC, HEC error counts in your router to see whether or not they are increasing rapidly. You could try to install RouterStats Lite to monitor the linestats over a long period of time.
http://www.vwlowen.co.uk/internet/files.htm
 
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