pppstats(1M) System Administration Commands pppstats(1M)NAMEpppstats - print PPP statistics
SYNOPSISpppstats [-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,
pppstats defaults to sppp0. 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.
OPTIONS
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 statis‐
tics 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 compres‐
sion ratio achieved by the packet compression algorithm
in use.
-v Display additional statistics relating to the perfor‐
mance of the Van Jacobson TCP header compression algo‐
rithm.
-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 indi‐
cating the performance of the packet compression algo‐
rithm in use.
EXTENDED DESCRIPTION
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 inter‐
face. 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 uncom‐
pressed 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 inter‐
face.
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 speci‐
fied.
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 uncom‐
pressed 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 transmit‐
ted.
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.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWpppdu │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Evolving │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOpppd(1M), attributes(5)SunOS 5.10 4 May 2001 pppstats(1M)
