atping(1M)

     NAME
          atping - ping an AppleTalk node

     SYNOPSIS
          atping [-l len] [-x] [-b] [-c] net.node
          atping -O name [-T type ] [-Z zone ] [-x] [-b] [-c] [-t] [-l

     DESCRIPTION
          The atping command attempts to use the Apple Echo Protocol
          (AEP) to ping an AppleTalk node.  It is similar in function
          to ping(1m).  In its usual usage, atping is given an
          AppleTalk net and node number, and it sends an echo request
          every second. It waits for response packets, and lists each
          one as it is received.    The output includes a round trip
          time, and a count of packets received and lost. The net and
          node arguments can be prepended with a 0x to specify
          hexadecimal input.

          -x           causes atping to print its output in
                       hexadecimal.

          -b           (blast) flag causes atping to send packets as
                       quickly as possible to test the load-handling
                       of another machine.  A count of the number of
                       packets sent and received is kept.  The high
                       packet volume produced may crash some routers.

          -c           (compare) flag causes atping to compare the
                       return packets to ensure the packets are not
                       getting corrupted in transit.  Can be used in
                       conjunction with -b

          -l           flag makes the echo packets len bytes long.
                       The default is 586, which is also the maximum.

          -t           makes atping wait at most 1 second for a
                       response, and exit with a code indicating
                       success (0) or failure (errno).  This is good
                       for detecting in a script if a machine has
                       failed.

          -O, -T, and -Z
                       options cause atping to use NBP to look up the
                       address of the entity.  If the entity you wish
                       to ping is running K-Talk, you can simply
                       specify the machine's name, with the -O option.
                       If the entity you wish to ping is another
                       device (such as a printer), you can specify the
                       type with -T (which defaults to "Echoer") and
                       the zone with -Z (which defaults to "*", the
                       local zone).  atping is usually used to check
                       network connectivity.  If there is no route
                       available to the specified net, atping will
                       return "network is unreachable".

     CAVEATS
          When routers with multiple interfaces configured for
          AppleTalk are pinged, they may return a ``from'' address
          from an interface other than the one addressed.  This is
          normal.