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 intervals for the specified PPP interface.  If the inter-
       face is unspecified, it will default to ppp0.  The display is split horizontally into input and output sections  contain-
       ing 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 uncom-
              pressed 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  speci-
              fied.

       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, instead displays the following fields, relating to the packet compression algorithm cur-
       rently 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
              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)