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NetBSD 6.1.5 - man page for pppstats (netbsd section 8)

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PPPSTATS(8)									      PPPSTATS(8)

NAME
       pppstats, slstats - print PPP/SLIP statistics

SYNOPSIS
       pppstats, slstats [ -a ] [ -v ] [ -r ] [ -z ] [ -c count ] [ -w secs ] [ interface ]

DESCRIPTION
       The  pppstats  or slstats utility reports PPP or SLIP related statistics at regular inter-
       vals for the specified PPP/SLIP interface.  If the interface is unspecified, pppstats will
       default	to  ppp0 and slstats will default to sl0.  The display is split horizontally into
       input and output sections containing columns of statistics describing the  properties  and
       volume of packets received and transmitted by the interface.

       The options are as follows:

       -a     Display  absolute  values  rather  than deltas.  With this option, all reports show
	      statistics for the time since the link was initiated.   Without  this  option,  the
	      second and subsequent reports show statistics for the time since the last report.

       -c count
	      Repeat  the  display  count  times.   If	this option is not specified, the default
	      repeat count is 1 if the -w option is not specified, otherwise infinity.

       -r     Display additional statistics summarizing the compression  ratio	achieved  by  the
	      packet compression algorithm in use.

       -v     Display  additional  statistics relating to the performance of the Van Jacobson TCP
	      header compression algorithm.

       -w wait
	      Pause wait seconds between each display.	If this  option  is  not  specified,  the
	      default interval is 5 seconds.

       -z     Instead  of the standard display, show statistics indicating the performance of the
	      packet compression algorithm in use.

       The following fields are printed on the input side when the -z option is not used:

       IN     The total number of bytes received by this interface.

       PACK   The total number of packets received by this interface.

       VJCOMP The number of header-compressed TCP packets received by this interface.

       VJUNC  The number of header-uncompressed TCP packets  received  by  this  interface.   Not
	      reported when the -r option is specified.

       VJERR  The  number  of  corrupted  or bogus header-compressed TCP packets received by this
	      interface.  Not reported when the -r option is specified.

       VJTOSS The number of VJ header-compressed TCP packets dropped on reception by this  inter-
	      face because of preceding errors.  Only reported when the -v option is specified.

       NON-VJ The  total number of non-TCP packets received by this interface. Only reported when
	      the -v option is specified.

       RATIO  The compression ratio achieved for  received  packets  by  the  packet  compression
	      scheme  in  use,	defined  as the uncompressed size divided by the compressed size.
	      Only reported when the -r option is specified.

       UBYTE  The total number of bytes received,  after  decompression  of  compressed  packets.
	      Only reported when the -r option is specified.

       The following fields are printed on the output side:

       OUT    The total number of bytes transmitted from this interface.

       PACK   The total number of packets transmitted from this interface.

       VJCOMP The  number  of  TCP packets transmitted from this interface with VJ-compressed TCP
	      headers.

       VJUNC  The number of TCP packets transmitted from this interface with VJ-uncompressed  TCP
	      headers.	Not reported when the -r option is specified.

       NON-VJ The  total number of non-TCP packets transmitted from this interface.  Not reported
	      when the -r option is specified.

       VJSRCH The number of searches for the cached header entry for a VJ header  compressed  TCP
	      packet.  Only reported when the -v option is specified.

       VJMISS The  number  of  failed  searches  for the cached header entry for a VJ header com-
	      pressed TCP packet.  Only reported when the -v option is specified.

       RATIO  The compression ratio achieved for transmitted packets by  the  packet  compression
	      scheme  in  use,	defined  as the size before compression divided by the compressed
	      size.  Only reported when the -r option is specified.

       UBYTE  The total number of bytes to be transmitted, before packet compression is  applied.
	      Only reported when the -r option is specified.

       When  the -z option is specified, pppstats instead displays the following fields, relating
       to the packet compression algorithm currently in use.  This option  is  not  supported  by
       slstats	and  it always displays zeros.	If packet compression is not in use, these fields
       will all display zeroes.  The fields displayed on the input side are:

       COMPRESSED BYTE
	      The number of bytes of compressed packets received.

       COMPRESSED PACK
	      The number of compressed packets received.

       INCOMPRESSIBLE BYTE
	      The number of bytes of incompressible packets (that is, those which were	transmit-
	      ted in uncompressed form) received.

       INCOMPRESSIBLE PACK
	      The number of incompressible packets received.

       COMP RATIO
	      The recent compression ratio for incoming packets, defined as the uncompressed size
	      divided by the compressed size  (including  both	compressible  and  incompressible
	      packets).

       The fields displayed on the output side are:

       COMPRESSED BYTE
	      The number of bytes of compressed packets transmitted.

       COMPRESSED PACK
	      The number of compressed packets transmitted.

       INCOMPRESSIBLE BYTE
	      The  number  of  bytes  of incompressible packets transmitted (that is, those which
	      were transmitted in uncompressed form).

       INCOMPRESSIBLE PACK
	      The number of incompressible packets transmitted.

       COMP RATIO
	      The recent compression ratio for outgoing packets.

SEE ALSO
       pppd(8), slattach(8)

					   2 March 2006 			      PPPSTATS(8)
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