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PPPSTATS(8)

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NAME    [Toc]    [Back]

       pppstats - print PPP statistics

SYNOPSIS    [Toc]    [Back]

       pppstats  [  -a	]  [ -v ] [ -r ] [ -z ] [ -c <count> ] [ -w <secs> ] [
       interface ]

DESCRIPTION    [Toc]    [Back]

       The pppstats utility reports PPP-related statistics at  regular	intervals
 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 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  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 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 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  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.  If packet compression is not in use, these fields will  all  display
 zeroes.  The fields displayed on the input side are:

       COMPRESSED BYTE    [Toc]    [Back]
	      The number of bytes of compressed packets received.

       COMPRESSED PACK    [Toc]    [Back]
	      The number of compressed packets received.

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

       INCOMPRESSIBLE PACK    [Toc]    [Back]
	      The number of incompressible packets received.

       COMP RATIO    [Toc]    [Back]
	      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    [Toc]    [Back]
	      The number of bytes of compressed packets transmitted.

       COMPRESSED PACK    [Toc]    [Back]
	      The number of compressed packets transmitted.

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

       INCOMPRESSIBLE PACK    [Toc]    [Back]
	      The number of incompressible packets transmitted.

       COMP RATIO    [Toc]    [Back]
	      The recent compression ratio for outgoing packets.

SEE ALSO    [Toc]    [Back]

      
      
       pppd(8)



				 26 June 1995			   PPPSTATS(8)
[ Back ]
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