Testing Broadband speed

How to check BSNL broadband speed ?

• Download Speed: this is the Internet speed at which files are downloaded to your computer. 
• Upload Speed: the speed at which you can upload files at locations on the Internet such as uploading email attachments. This is known as the upload speed.

This article shows how to measure internet speed and it sheds.
Many factors have an impact on how fast or slow your internet connection is

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Why my Internet connection is so slow ?

The following might be the reasons.

1.Broadband Plan 

2.Line condition

3.Spyware or Trojan virus

4.Browser add-ons or extensions

5.System hardware & memory.

6.Network Setup , Wrong DNS Settings

For details

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Checking Broadband Speed

The time it takes to download a file can vary greatly depending on your Internet connection speed; waiting for a file to download for too long can get very frustrating.

• Download Speed: this is the Internet speed at which files are downloaded to your computer.
• Upload Speed: the speed at which you can upload files at locations on the Internet such as uploading email attachments. This is known as the upload speed.

This article shows how to measure internet speed and it sheds.
Many factors have an impact on how fast or slow your internet connection is

Read More

Netmeter for checking bandwidth , Speed

Checking Broadband Speed

Download this utility called "NETMETER" to check the network traffic.

To check the speed , download multiple files from good different servers

Eg download x86 file here: http://www.virtualbox.org/wiki/Downloads

OR

Download from here : http://serverninjas.com/sn/

Then check  the upload/download data rate. 

Please note that the speed indicates the traffic across the network interface card , it includes background traffic like auto update , traffic created bytrojan virus attack ,LAN traffic etc.
Hence if a traffic is noticed, even when not using the internet then probably the computer is infected with trojan. This tool may not be useful in network environment.

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Line speed Vs data transfer rate

Speed:

 Browsers and other file transfer agents tend to show speed in terms of kilobytes per second, usually with one or two decimal places.  Thus, you may see your browser report a "Transfer rate:" being "XX KB/Sec", (along with the flying paper graphic as displayed to the right. )

So.. bytes and bits? I just divide by 8 then?    

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Unable to login with some SSL enabled sites like gmail, yahoomail, etc

Unable to login with some SSL enabled sites like gmail, yahoomail, etc

1. First check whether the domain name is resolved to IP address using the DNS entered in your PC
    Open Command prompt  by typing Start > Run > cmd  

    C:> NSLOOKUP   gmail.com
    It should translates the domain name into IP address. If not, DNS entered is incorrect.

2.Wrong MTU setting might be the problem.( Need to change the MTU in CPE)
   For most cases  MTU setting of 1452 or 1492 is sufficient.
  
  To set the optimum value use the utility 
   MTUFINDER click download and save inside the windows folder.
   Open the command prompt
    Example command to get the MTU of a gmail website.
   c:> findmtu  gmail.com

Using Ping command to calculate the MTU size

A series of ping tests using the command,

ping www.expedient.net -f -l xxxx

where xxxx is the packet size, can be used to determine the optimal MTU for your connection.

1. Go to Start and select Run.

2. Type in cmd (Windows 2000/XP) or command (Windows 98/ME) into the Open: field.

Hit the enter key or click OK. The DOS prompt should open.

3. At the DOS prompt, type in ping www.expedient.net -f -l 1492 and hit the Enter key.

 4. Note the results above indicate that the packet needs to be fragmented. Lower the size the packet in increments of +/-10 (e.g. 1472, 1462, 1440, 1400) until you have a packet size that does not fragment.

5. Begin increasing the packet size from this number in small increments until you find the largest size that does not fragment. Add 28 to that number (IP/ICMP headers) to get the optimal MTU setting.
For example, if the largest packet size from ping tests is 1462, add 28 to 1462 to get a total of 1490 which is the optimal MTU setting

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