NAME¶

dropwatch - kernel dropped packet monitoring utility

SYNOPSIS¶

dropwatch [-l <method> | list]

DESCRIPTION¶

dropwatch dropwatch is an interactive utility for monitoring and recording packets that are dropped by the kernel

OPTIONS¶

-l <method> | list

Select the translation method to use when a drop alert arrives. By default the raw instruction pointer of a drop location is output, but by the use of the -l option, we can assign a translation method so that the instruction pointer can be translated into function names. Currently supported lookup methods are:

kas - use /proc/kallsyms to lookup instruction pointers to function mappings

INTERACTIVE COMMANDS¶

start

Tells the kernel to start reporting dropped packets

stop

Tells the kernel to discontinue reporting dropped packets

exit

Exits the dropmonitor program

help

Displays summary of all commands

set alertlimit <value>

Sets a triggerpoint to stop monitoring for dropped packets after <value> alerts have been received