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Author Topic: Ping help??  (Read 3575 times)

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nymph4

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    Ping help??
    « on: February 02, 2009, 10:04:09 PM »
    I need help understanding one thing about PING Command??

    If you PING a web site of you PING your Network what is going on is this.

    Your computer is sending Packits of Data to what ever you PING Networks web sites and so on. Then when the Packits of Data come back to your computer it displays a list of Specs.

    How long it took for every Packit of Data to hit the Target computer and come back to yours and other stuff like that ok I get this.

    But when you PING Localemichine  your computer PINGS itself.
    But if you are not on a Network then it just PINGS itself but how does it do this??

    What I meen is does your computer just PING it's Internale Componets like RAM  PCI Slots or what??

    Because your not sending Packits of Data out of the computers ports so how does it PING itself????

    Thanks

    BC_Programmer


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    Re: Ping help??
    « Reply #1 on: February 03, 2009, 12:32:22 AM »
    SIGH.

    ping is a network command. it pings itself because LOCALHOST is aliased to 127.0.0.1
    I was trying to dereference Null Pointers before it was cool.

    JJ 3000



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    Re: Ping help??
    « Reply #2 on: February 03, 2009, 12:43:53 AM »
    Hey nymph4, you ever think about getting a book about computers?
    Save a Life!
    Adopt a homeless pet.
    http://www.petfinder.com/

    nymph4

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      Specialist

      Re: Ping help??
      « Reply #3 on: February 03, 2009, 06:44:27 PM »
      Ok I have been looking at a lot of Documents on the net about PING and I don't understnd one thing and I know they both have something to do with one another.

      When you get your Ping Reply back it will tell you
      TIME = 100 ms TTL = 252

      TIME = 100 ms       
      I know that meens it took 100 Milli Seconds for the Packet to comeback to you.

      TTL = 252
      I know that meens the Paket stays around for so long before it Dies.

      Does this meen that the Paket Lives for 252 Milli Sconds???

      And once a Packet gets sent out and comes back I thhought that is when it was nolonger in use????

      nymph4

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        Specialist

        Re: Ping help??
        « Reply #4 on: February 04, 2009, 08:11:34 PM »
        Anyone???

        mayers57



          Rookie

          Re: Ping help??
          « Reply #5 on: February 04, 2009, 08:30:45 PM »
          TTL is a limit placed on the packet so that it doesn't travel a network forever. Usually set by the transmitting system.
          For example: You ping an address that the 1st router on it's path can't find, so it's passed onto the next router. That
          router is also unable to find that particular address so it too passes it onto the next. Each time a counter is decremented
          by one until the TTL = 0. Then the packet dies. Otherwise the NET would have no bandwidth left, it would be overloaded
          with addresses (pings or network requests) that were never able to be reached.
          Hope that helps. 
          Mike aka GEGeek

          nymph4

            Topic Starter


            Specialist

            Re: Ping help??
            « Reply #6 on: February 05, 2009, 01:29:10 PM »
            I am trying to get the hang of PING commands
            If I use the ping command
            ping -i www.google.com

            This will let me set how big in Bytes every Echo will be.

            So if I would lik every Echo to be 42 Bytes my command should then be
            ping -i 42 www.google.com

            Amd I right

            nymph4

              Topic Starter


              Specialist

              Re: Ping help??
              « Reply #7 on: February 06, 2009, 11:57:10 AM »
              OK this is everything I could findout on google  about Ping Please tell me if I have it right??

              ping www.apple.com
              This will ping the Web Site with Four Packets.

              You will get a Display like this.
              REPLY FROM 17.254.0.91: BYTES = 32 TIME = 100 MS TTL = 252
              REPLY FROM 17.254.0.91: BYTES = 32 TIME = 100 MS TTL = 252
              REPLY FROM 17.254.0.91: BYTES = 32 TIME = 100 MS TTL = 252
              REPLY FROM 17.254.0.91: BYTES = 32 TIME = 100 MS TTL = 252


              REPLY FROM 17.254.0.91: BYTES = 32 TIME = 100 ms
              This tells that Four Packets each 32 Bytes in Size were sent to www.apple.com and took 100 Milli Seconds.

              TTL = 252
              This tells the Packet will going around.

              ping www.apple.com -c 10
              This will ping the Web Site with Ten Packets or whatever you want.

              ping www.apple.com -f
              This will send another Packet immediately right after receiving a reply to the last one.

              ping www.apple.com -s 45
              This will make every Packet sent 45 Bytes you can not go higher then 65,527 Byes.

              Hedonist



                Intermediate

                Re: Ping help??
                « Reply #8 on: February 06, 2009, 04:31:39 PM »
                At last you've found Google ;D

                Now please tell us from which site you got your info on Ping.

                Entering Ping/? at the Command Prompt in XP Home produces
                Quote
                Usage: ping [-t] [-a] [-n count] [-l size] [-f] [-i TTL] [-v TOS]
                            [-r count] [-s count] [[-j host-list] | [-k host-list]]
                            [-w timeout] target_name

                Options:
                    -t             Ping the specified host until stopped.
                                   To see statistics and continue - type Control-Break;
                                   To stop - type Control-C.

                    -a             Resolve addresses to hostnames.

                    -n count       Number of echo requests to send.

                    -l size        Send buffer size.

                    -f             Set Don't Fragment flag in packet.

                    -i TTL         Time To Live.

                    -v TOS         Type Of Service.

                    -r count       Record route for count hops.

                    -s count       Timestamp for count hops.

                    -j host-list   Loose source route along host-list.

                    -k host-list   Strict source route along host-list.

                    -w timeout     Timeout in milliseconds to wait for each reply.

                I can't find a -c switch, perhaps you are using a different OS?


                Geek-9pm


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                Re: Ping help??
                « Reply #9 on: February 06, 2009, 04:45:09 PM »
                Now that he knows Ping, would anybody
                like to introduce him to Pong ?

                BC_Programmer


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                Re: Ping help??
                « Reply #10 on: February 07, 2009, 09:04:36 AM »
                Now that he knows Ping, would anybody
                like to introduce him to Pong ?

                And then,move up to Tick and Tock  ;D
                I was trying to dereference Null Pointers before it was cool.