PG3(8) System Manager's Manual: iputils PG3(8)NAME
pg3, ipg, pgset - send stream of UDP packets
SYNOPSIS
source ipg
pg
pgset COMMAND
DESCRIPTION
ipg is not a program, it is script which should be sourced to bash.
When sourced it loads module pg3 and exports a few of functions acces‐
sible from parent shell. These macros are pg to start packet injection
and to get the results of run; and pgset to setup packet generator.
pgset can send the following commands to module pg3:
COMMAND
odev DEVICE
Name of Ethernet device to test. See warning below.
pkt_size BYTES
Size of packet to generate. The size includes all the headers:
UDP, IP, MAC, but does not account for overhead internal to
medium, i.e. FCS and various paddings.
frags NUMBER
Each packet will contain NUMBER of fragments. Maximal amount
for linux-2.4 is 6. Far not all the devices support fragmented
buffers.
count NUMBER
Send stream of NUMBER of packets and stop after this.
ipg TIME
Introduce artificial delay between packets of TIME microseconds.
dst IP_ADDRESS
Select IP destination where the stream is sent to. Beware,
never set this address at random. pg3 is not a toy, it creates
really tough stream. Default value is 0.0.0.0.
dst MAC_ADDRESS
Select MAC destination where the stream is sent to. Default
value is 00:00:00:00:00:00 in hope that this will not be
received by any node on LAN.
stop Abort packet injection.
WARNING
When output device is set to some random device different of hardware
Ethernet device, pg3 will crash kernel.
Do not use it on VLAN, ethertap, VTUN and other devices, which emulate
Ethernet not being real Ethernet in fact.
AUTHORpg3 was written by Robert Olsson <robert.olsson@its.uu.se>.
SECURITY
This can be used only by superuser.
This tool creates floods of packets which is unlikely to be handled
even by high-end machines. For example, it saturates gigabit link with
60 byte packets when used with Intel's e1000. In face of such stream
switches, routers and end hosts may deadlock, crash, explode. Use only
in test lab environment.
AVAILABILITYpg3 is part of iputils package and the latest versions are available
in source form at http://www.skbuff.net/iputils/iputils-cur‐
rent.tar.bz2.
iputils-121221 24 January 2013 PG3(8)
