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PPPSTATS(8)							   PPPSTATS(8)

NAME
       pppstats	- print	PPP statistics

SYNOPSIS
       pppstats	 [  -a	]  [ -v	] [ -r ] [ -z ]	[ -c _count_ ] [ -w _secs_ ] [
       interface ]

DESCRIPTION
       The pppstats utility reports PPP-related	statistics at  regular	inter-
       vals for	the specified PPP interface.  If the interface is unspecified,
       it will default to ppp0.	 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	inter-
       face.

       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 ini-
	      tiated.	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	speci-
	      fied,  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	recep-
	      tion by  this  interface	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 com-
	      pressed 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	inter-
	      face.  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	compressed 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  com-
	      pression is applied.  Only reported when the -r option is	speci-
	      fied.

       When the	-z option is specified,	pppstats instead displays the  follow-
       ing  fields,  relating to the packet compression	algorithm currently in
       use.  If	packet compression is not in use, these	fields will  all  dis-
       play 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 transmitted 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)

				 26 June 1995			   PPPSTATS(8)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO

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