linkloop man page on HP-UX

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linkloop(1M)							  linkloop(1M)

       linkloop - verify LAN connectivity with link-level loopback

       PPA] count] rif] size] timeout] linkaddr ...

       The and commands are deprecated.	 See for more information.

       The  command uses IEEE 802.2 link-level test frames to check connectiv‐
       ity within a local area network (LAN).

       linkaddr is the hardware station address of  a  remote  node.   Several
       addresses can be specified at one time.

       tests  the connectivity of the local node and the remote node specified
       by each hardware station address.  The hardware station	address	 of  a
       remote  node  can be found by executing on the remote node.  This hard‐
       ware station address is usually represented  as	a  hexadecimal	string
       prefixed	 with  It  can	also be represented as a octal string prefixed
       with or as a decimal string.  The hardware station address must not  be
       a multicast or broadcast address.

       recognizes the following options:

	      Specify the    PPA  to use.  If this option is omitted, uses the
			     first PPA	it  encounters	in  an	internal  data

	      Set the number of frames to transmit.
			     If	 count	is transfers frames indefinitely until
			     an interrupt signal (defined by the  user	shell)
			     is received.  The default value for count is

	      Specify the particular bridge route
			     over  which  token	 ring packets should be deliv‐
			     ered.  rif is the routing information field  used
			     for  token-ring  networks.	 Its value is given as
			     an even number of hexadecimal bytes separated  by
			     colons, up to a maximum of 16 bytes.

	      Set the size in bytes of the data message to send.
			     The maximum data size is dependent on the type of
			     LAN link being used.  The default	value  is  the
			     maximum  data byte count that can be used for the
			     particular link.

	      Set the amount of time in seconds to wait for a reply
			     from the remote node before aborting.  If timeout
			     is	 waits	indefinitely for a reply.  The default
			     value is 2 seconds.

	      Set the verbose option.
			     In	 addition  to  the  regular  summary  of  test
			     results,  this  option  displays  more  extensive
			     error information.	 If there are header or length
			     errors,  appropriate messages are displayed.  All
			     verbose output  is	 preceded  by  the  number  of
			     replies accepted before an error occurred.

   Connectivity Test Results
       aborts  upon  receipt  of an interrupt signal.  If aborted, the current
       results are printed.

       prints the result of the link-level connectivity	 test.	 If  the  test
       fails, it prints a summary of the test and indicates the type of error.
       The possible messages are:

	      An incorrect hardware station address was entered on the command

	      The station address entered on the command line is either a mul‐
	      ticast or broadcast address.

	      Total number of frames sent.

	      Total number of frames received without errors.

	      Received frame length does not match transmitted	frame  length.
	      If the verbose option is set, the length received is printed.

	      Received frame does not match transmitted frame.

	      Number  of  frames  received  containing unexpected frame header
	      information.  Either the	source	address	 does  not  match  the
	      remote address, the destination address does not match the local
	      address, or the control field is	not  the  TEST	frame  control
	      field.   These  frames are ignored.  continues to try to receive
	      the reply frame until the operation times out.

	      Count of how many operations timed  out  before  the  reply  was

	      The  count specified in the option is a negative integer, or the
	      number specified is too large for the local computer.

	      The timeout specified in the option is a	negative  integer,  or
	      the  value  specified  multiplied	 by  1000 is too large for the
	      local computer.

	      The size specified in the option is not in the range from	 0  to
	      the maximum link data size.  Remember that the maximum link data
	      size can vary in value for different LAN connection types.   The
	      current MTU can be obtained with the command.

	      The PPA specified in the option is not a valid PPA.

	      Device file does not exist.

	      The rif value in the option is invalid.

	      The  number  of bytes in rif in the option exceeded 16, which is
	      the maximum allowed.

	      The number of bytes in rif in the option is odd.	The number  of
	      bytes must be even.

       The  and	 commands are deprecated.  These commands will be removed in a
       future HP-UX release.  HP recommends the	 use  of  replacement  command
       nwmgr(1M) to perform all network interface-related tasks.

       was developed by HP.

       lanadmin(1M), lanscan(1M), nwmgr(1M), lan(7).

				TO BE OBSOLETED			  linkloop(1M)

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