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Helps in determining TCP/IP networks IP address as well as determine issues with the network and assists in resolving them. See the ping definition for a full description.
Pings the localhost. which helps determine if the computer can send information out and receive the information back from itself.
Note: The above command does not send information over network, but can indicate if the card can respond .
Ping supports the ability to ping an Internet address. In the above example, we pinged "computerhope.com" and as can be seen, received four responses back. If we couldn't reach the server or the server was blocking our request we would have lost all four packets .
Allows you to ping another computer where <220.127.116.11> can be the IP address of the computer you want to ping. If you do not get a reply or get lost packets you have a problem with your network, which can be a cable issues, network card issues, drivers. router. switch. or other network problem.
I suggest the following: Install a packet analyzer to the target machine. This program helps you observe and analyze the network traffic real time. It is helpful for debug the network packets, look inside how the frames is structured. The Wireshark is quite popular debugger tool. Install it and check TCP/IP and SNMP packets with it. Here is it: http://www.wireshark.org/download.html
Second: There is a lot of information on the internet about the SNMP freame formats and TCP/IP protocol. Here are some useful links: http://www.tcpipguide.com/free/t_SNMPMessageFieldDefinitionsGeneralMessageFormatand.htm http://www.dpstele.com/layers/l2/snmp_l2_tut_part1.php http://www.rane.com/note161.html A lot of RFC documents write down the SNMP protocol.
Here are somple helpful VC++ programs: https://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=7949&lngWId=3
I suggest using free tools to test your network device: http://manageengine.adventnet.com/products/oputils/free-snmp-tools.html