The pppstats options are:
-a
Display absolute values rather than deltas. With this
option, all reports show statistics for the time elapsed 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 five 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
Total number of bytes received by this interface.
PACK
Total number of packets received by this interface.
VJCOMP
Number of header-compressed TCP packets received by this
interface.
VJUNC
Number of header-uncompressed TCP packets received by
this interface. Not reported when the -r option is specified.
VJERR
Number of corrupted or bogus header-compressed TCP
packets received by this interface. Not reported when the -r option is
specified.
VJTOSS
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
Total number of non-TCP packets received by this
interface. Only reported when the -v option is specified.
RATIO
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
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
Total number of bytes transmitted from this
interface.
PACK
Total number of packets transmitted from this
interface.
VJCOMP
Number of TCP packets transmitted from this interface
with VJ-compressed TCP headers.
VJUNC
Number of TCP packets transmitted from this interface
with VJ-uncompressed TCP headers. Not reported when the -r option is
specified.
NON-VJ
Total number of non-TCP packets transmitted from this
interface. Not reported when the -r option is specified.
VJSRCH
Number of searches for the cached header entry for a VJ
header compressed TCP packet. Only reported when the -v option is
specified.
VJMISS
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
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
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 displays
the following fields relating to the packet compression algorithm currently
in use. If packet compression is not in use, these fields display zeroes.
The fields displayed on the input side are:
COMPRESSED BYTE
Number of bytes of compressed packets received.
COMPRESSED PACK
Number of compressed packets received.
INCOMPRESSIBLE BYTE
Number of bytes of incompressible packets (that is, those
which were transmitted in uncompressed form) received.
INCOMPRESSIBLE PACK
Number of incompressible packets received.
COMP RATIO
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
Number of bytes of compressed packets transmitted.
COMPRESSED PACK
Number of compressed packets transmitted.
INCOMPRESSIBLE BYTE
Number of bytes of incompressible packets received; that
is, those that were transmitted by the peer in uncompressed form.
INCOMPRESSIBLE PACK
Number of incompressible packets transmitted.
COMP RATIO
Recent compression ratio for outgoing packets.