IPPPSTATS(8) Linux System Administration IPPPSTATS(8)NAME
pppstats - print PPP statistics
SYNOPSIS
pppstats [ -v ] [ -r ] [ -c ] [ -i <secs> ] [ <unit#> ]
DESCRIPTION
pppstats prints PPP-related statistics.
The -v flag causes pppstats to display additional statistics, such as the number of packets tossed (that is, which the VJ TCP header decom-
pression code rejected).
The -r flag causes pppstats to display the overall packet compression rate. The rate value is between 0 and 1, with 0 meaning that the
data is incompressible.
The -c flag is used to specify an alternate display mode that shows packet compression statistics: the number of packets and bytes uncom-
pressed (that is, before compression or after decompression), compressed, and incompressible (packets which did not shrink on compression
and were transmitted uncompressed), and the recent compression rate. This rate reflects the recent performance of the compression code
rather than the overall rate achieved since compression was enabled.
The -i flag is used to specify the interval between printouts. The default is 5 seconds.
<unit#> specifies which interface to use for gathering statistics.
isdn4k-utils-3.13 1997/10/26 IPPPSTATS(8)
Check Out this Related Man Page
pppstats(8) System Manager's Manual pppstats(8)NAME
pppstats - Print Point-to-Point Protocol (PPP) statistics
SYNOPSIS
/usr/sbin/pppstats [-a] [-v] [-r] [-c count] [-w secs] [interface] [-z]
OPTIONS
Displays 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. Repeats the display count
times. The default repeat count is 1 if the -w option is not specified, otherwise infinity. Displays the overall packet compression rate.
The rate value is between 0 and 1, with 0 meaning that the data is incompressible. Displays additional statistics, such as the number of
packets ignored (rejected by the VJ TCP header decompression code). Pauses wait seconds between each display. If this option is not spec-
ified, the default interval is 5 seconds. Instead of the standard display, show statistics indicating the performance of the packet com-
pression algorithm in use. See the STATISTICS section for further information on this option.
DESCRIPTION
The pppstats utility reports PPP-related statistics at regular intervals for the specified PPP interface. If 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.
STATISTICS
The following fields are printed on the input side when the -z option is not used: The total number of bytes received by this interface.
The total number of packets received by this interface. The number of header-compressed TCP packets received by this interface. The num-
ber of header-uncompressed TCP packets received by this interface. Not reported when the -r option is specified. The number of corrupted
or bogus header-compressed TCP packets received by this interface. Not reported when the -r option is specified. 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.
The total number of non-TCP packets received by this interface. Only reported when the -v option is specified. 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. 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: The total number of bytes transmitted from this interface. The total number of pack-
ets transmitted from this interface. The number of TCP packets transmitted from this interface with VJ-compressed TCP headers. The number
of TCP packets transmitted from this interface with VJ-uncompressed TCP headers. Not reported when the -r option is specified. The total
number of non-TCP packets transmitted from this interface. Not reported when the -r option is specified. The number of searches for the
cached header entry for a VJ header compressed TCP packet. Only reported when the -v option is specified. 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. 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. 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 displays the following fields, relating to the packet compression algorithm currently in use. If
packet compression is not in use, these fields all display zeroes. The fields displayed on the input side are: The number of bytes of com-
pressed packets received. The number of compressed packets received. The number of bytes of incompressible packets (that is, those which
were transmitted in uncompressed form) received. The number of incompressible packets received. 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: The number of bytes of compressed packets transmitted. The number of compressed packets
transmitted. The number of bytes of incompressible packets transmitted (that is, those which were transmitted in uncompressed form). The
number of incompressible packets transmitted. The recent compression ratio for outgoing packets.
SEE ALSO
Daemons: pppd(8)pppstats(8)