Before Posting About Speed Issues

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James D

Before Posting About Speed Issues

Post by James D » Thu Mar 01, 2007 7:24 pm

Before you post any issues with speed please read through the below. You will find information on speed issues and steps to take if you are experiencing speed issues.

Before doing any of the things listed below run a speed test here:

http://speedtest.net/

(select the Sydney server for the test)

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Things that you should try or check before continuing:


1. Incorrect Domain Name Resolver (DNS) settings

The most common cause of slow browsing speeds is because you still have the DNS settings for your previous service provider loaded. Every time you try to access a web page or some remote site, your computer uses your previous ISP's server to resolve the address. This can add extra time to the site address being found. In some cases ISP's block the access from other ISP's and so the lookup fails and you get a 'site not found' error.

To fix this problem, set your computers DNS settings to:

Primary: 220.233.0.4
Secondary: 220.233.0.3

2. You Previously Set Your PC To Use A Proxy

You may still have proxy settings for your previous service provider in your browser (Exetel doesn’t use proxies). Every time you try to open a web site, your browser tries to use the previous ISP's proxy server to load the page. This can add extra time to the site loading, and in many cases the ISP's proxy server will not allow external access so the site will not load and you will get a 'site not found' error.

To fix this problem, go into your Browser settings and turn off all proxy server settings. If you are using Internet Explorer you do this via:

'Tools' - 'Internet Options' - 'Connections' - 'LAN Settings' and then uncheck every option then click 'OK'.

Then go to the DOS window and type in ipconfig /flushdns

3. Previously Used Some Sort Of Download/Upload Speed Control

If you are using a utility such as "Net Limiter" ensure that the settings have been changed to match your new service speed.

4. Other Common Causes

There are other downloads or p2p software running on your computer - Many file sharing programs, as well as automatic software updates, runs in the background and you may not even be aware it is running. These downloads may be saturating your ADSL circuit and causing your internet access and browsing to seem slow. Turning them off will fix the problem

The activity of other computers on your network - Is your internet connection shared by other people? Teenagers perhaps? Heavy downloads by others can saturate the bandwidth and degrade internet access performance for everyone else. Even if you are told "I am not downloading anything, honest!", try disconnecting the suspect computer from the network and see if that fixes the problem.

Windows Automatic Updates is turned ON. - If you have automatic updates turned on, your computer will download the latest updates and patches. This can saturate your service, depending on the settings. You should either turn this off, or select not to download, or notify you only. Go to 'Control Panel, select 'Automatic Updates' and select 'Notify me but don't automatically download or install them'.

Other software automatic updating - A lot of software has their own update feature, and will often connect to their service to check for updates. You need to ensure that these are turned off, or ON, if you want this to take place but be aware that this will cause slow browsing on the occasions that a download is being received.

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Isolation Test
First remove ALL devices that are connected to the telephone line used by your ADSL modem. The reason this is asked, is to try and eliminate any hardware issues at this stage at your premises that may be interfering with your ADSL line sync/speed You should do this systematically using the following check list:

Power off your ADSL modem and unplug all cables.
Unplug all telephone handsets and cordless phones, remembering the extension in the garage, bedroom etc.
Unplug all fax machines
Remove all ADSL filters
Remove all telephone double adapters/splitters
Remove all telephone extension cables
Unplug Foxtel/Austar Digital TV connection to the phone line
Unplug any building alarm. If unable to unplug the telephone line from the alarm, then power off the alarm unit.
When you are certain that all devices that use the telephone line at your premises have been unplugged, proceed to the next step.

Using a short telephone cable, less than 2 meters long, plug into Telephone or Line port of the ADSL modem and then directly into the first telephone point in the premises. Check that the telephone cable is firmly plugged in and not damaged.
DO NOT place an ADSL filter between the modem and the telephone point on the wall.

Power on the ADSL modem. Identify the light on the modem that tells you when your modem is connected to the ADSL service. Sometimes this is called LINK, LNK, SYNC or WAN, depending on the modem type. In most cases the light will be steady and not flashing when it is connected
If the light is not flashing at this point there is a physical link to the exchange.

Plug in each of the devices you unplugged in the first step, ensuring that you have correctly installed an ADSL filter on the telephone line between the device and the telephone wall socket.
Check the light on the ADSL modem that indicates you have a connection after you plug in each device. If the light starts flashing after you plug in a device this indicates the device or filter is faulty. Check that the filter is correctly installed (please see the Hardware Installation Guide to confirm). Replace with another filter.
Repeat this procedure for all telephones, faxes, digital TV, building alarms, remembering to install the filter and check the ADSL modem after adding each device.
Repeat the procedure for all telephone double adapters/splitters and telephone extension cables installed, checking the ADSL modem after each installation.


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If you have been through the advised steps above and you are still having a speed issue please complete the 2 below steps and paste your results.


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PING and Traceroute

These two steps do reveal some very vital network conditions from your ADSL service to the Internet. For an experienced network engineer or staff member, this provides clues and/or an initial insight.

First, open up your e-mail program, and create an e-mail. Minimize the e-mail, as we will be using it soon to save our PING and Traceroute text in to.

To do a PING test with Windows XP

Click on ‘START’ (bottom left hand corner on your screen)
Click on ‘Run’
Type in ‘cmd’
When a black MS-DOS black screen appears, type; ping 220.233.0.50 then press enter
Save the results, by cut and pasting into the body of an e-mail (see below how to cut & paste)
To do a trace route test with Windows XP

Click on ‘START’ (bottom left hand corner on your screen)
Click on ‘Run’
Type in ‘cmd’
When a black MS-DOS black screen appears, type; tracert www.telstra.com then press enter
Save the results, by cut and pasting into the body of an e-mail
To cut and paste, from the MS DOS screen

Click on the top left hand corner of the MS DOS screen
From the drop down menu, choose ‘Properties’
Check the box ‘quick edit mode’
Now, depress the left mouse button at the beginning of the text you wish to copy from the MS DOS screen and drag across to the bottom of the text. The text should be highlighted white.
Now right mouse click once. This seems not to do anything, however it does, it has just ‘cut’ the text.
Now click inside the body of your e-mail and press the ‘control’ and ‘v’ keys together on your keyboard, or right mouse click and select ‘paste’. This ‘pastes’ the text you just highlighted into the e-mail.
Demonstrating what PING and Traceroute looks like

PING

C:\Documents and Settings\Owner>ping 220.233.0.50

Pinging 220.233.0.50 with 32 bytes of data:

Reply from 220.233.0.50: bytes=32 time=13ms TTL=61
Reply from 220.233.0.50: bytes=32 time=7ms TTL=61
Reply from 220.233.0.50: bytes=32 time=6ms TTL=61
Reply from 220.233.0.50: bytes=32 time=7ms TTL=61

Ping statistics for 220.233.0.50:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 6ms, Maximum = 13ms, Average = 8ms

TRACERT

C:\Documents and Settings\Owner>tracert www.telstra.com

Tracing route to www.telstra.com [144.135.19.10]
over a maximum of 30 hops:

1 1 ms 2 ms 2 ms 192.168.1.254
2 12 ms 7 ms 7 ms 185.33.233.220.exetel.com.au [220.233.33.185]
3 7 ms 7 ms 7 ms 254.0.233.220.exetel.com.au [220.233.0.254]
4 8 ms 8 ms 7 ms Vlan366.O2GSC76F03.optus.net.au [203.202.84.65]
5 8 ms 8 ms 8 ms GE-WAN3-4.un2.optus.net.au [203.202.36.137]
6 8 ms 8 ms 8 ms gigabitethernet4-3.ken12.sydney.telstra.net [139
.130.2.65]
7 8 ms 8 ms 8 ms TenGigabitEthernet8-1.pit1.Sydney.telstra.net [2
03.50.20.39]
8 8 ms 8 ms 8 ms pitt-tcom-r01 [139.130.185.254]
9 9 ms 8 ms 8 ms 144.135.19.84
10 * 9 ms 8 ms 144.135.18.18
11 21 ms 7 ms 7 ms 144.135.19.10

Trace complete.

Speed Tests

Having done the isolation test and having established that there are no other devices or faulty cables affecting your ADSL connection, reconnect to the ADSL and do the speed tests found described below: Go to http://www.exetel.com.au/speed/meter.php or http://www.ozspeedtest.com/ and run the speed test.

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Please paste your results into the forum thread.

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