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PG3
Section: System Manager's Manual: iputils (8)
Updated: 14 August 2010
Index
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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 accessible 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.
AUTHOR
pg3 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.
AVAILABILITY
pg3 is part of iputils package
and the latest versions are available in source form at
http://www.skbuff.net/iputils/iputils-current.tar.bz2.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- COMMAND
-
- WARNING
-
- AUTHOR
-
- SECURITY
-
- AVAILABILITY
-
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