Wednesday, February 19, 2014

What is PING?

Definition of PING:

The length of time in milliseconds that it takes to send a message to an URL (internet, intranet, or web address) and get a response. There is no message but if you get a reply it means you can successfully contact the URL.

Why do you need PING?

When you want to test connectivity over the internet, you ping(Packet Inter-Networking Groper).

How do you 'Ping'?

In Windows 7 type cmd in the search box that you open when you click Start.
Click the Program cmd that is found.
It opens up the window for cmd.exe (the DOS window)
Type in ping 127.0.0.1 and hit return
You will see the following:
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C:\Users\mysorian>Ping 127.0.0.1
Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms ttl="128<br">Reply from 127.0.0.1: bytes=32 time<1ms ttl="128<br">Reply from 127.0.0.1: bytes=32 time<1ms ttl="128<br">Reply from 127.0.0.1: bytes=32 time<1ms ttl="128</p">Ping statistics for 127.0.0.1:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms
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This means your network card is working as it should
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Type PING http://www.microsoft.com
You get the reply after which you Ping hodentek.blogspot.com
You get these replies
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C:\Users\mysorian>ping www.microsoft.com
Pinging lb1.www.ms.akadns.net [64.4.11.42] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 64.4.11.42:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
C:\Users\mysorian>ping hodentek.blogspot.com
Pinging blogspot.l.googleusercontent.com [74.125.224.44] with 32 bytes of data:
Reply from 74.125.224.44: bytes=32 time=63ms TTL=53
Reply from 74.125.224.44: bytes=32 time=61ms TTL=53
Reply from 74.125.224.44: bytes=32 time=60ms TTL=53
Reply from 74.125.224.44: bytes=32 time=62ms TTL=53
Ping statistics for 74.125.224.44:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 60ms, Maximum = 63ms, Average = 61ms
C:\Users\mysorian>
---
This shows you could get to Hodentek.blogspot.com but not www.microsoft.com
In any case, if you are trouble shooting connectivity issues try pinging your own network card at 127.0.0.1

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