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arping - sends IP and/or ARP pings (to the MAC address)…  more info»

arping.8.gz

arping(8)                                                  arping(8)



NAME
       arping - sends arp and/or ip pings to a given host

SYNOPSIS
       arping  [-abdDeFhpqrRd0uv] [-S host/ip] [-T host/ip] [-s MAC]
       [-t MAC] [-c count] [-i interface] [ -w us ] <host | -B>

       arping --help

DESCRIPTION
       The arping utility sends ARP  and/or  ICMP  requests  to  the
       specified  host  and  displays  the  replies. The host may be
       specified by  its  hostname,  its  IP  address,  or  its  MAC
       address.

       One request is sent each second.

       When pinging an IP an ARP who-has query is sent. When pinging
       a MAC address a directed broadcast ICMP Echo request is sent.
       For  more  technical  explaination and an FAQ, see the README
       file.

       Note on timing

       ARP packets are usually replied to (on a LAN)  so  fast  that
       the  OS task scheduler can't keep up to get exact enough tim‐
       ing.  On an idle system the roundtrip times  will  be  pretty
       much accurate, but with more load the timing gets less exact.

       To get more exact timing on a non-idle system, re-nice arping
       to -15 or so.

       # nice -n -15 arping foobar

       This is not just an issue with arping, it is with normal ping
       also (at least it is on my system). But it doesn't show up as
       much with ping since arping packets (when pinging IP) doesn't
       traverse the IP stack when received and are therefore replied
       to faster.

OPTIONS
       --help Show extended help. Not quite  as  extensive  as  this
              manpage, but more than -h.

       -0     Use  this  option  to  ping  with  source  IP  address
              0.0.0.0. Use this when  you  haven't  configured  your
              interface  yet.   Note  that this may get the MAC-ping
              unanswered.  This is an alias for -S 0.0.0.0.

       -a     Audible ping.

       -A     Only count addresses matching requested address  (This
              *WILL*  break  most  things you do. Only useful if you
              are arpinging many hosts  at  once.  See  arping-scan-
              net.sh for an example).

       -b     Like   -0   but   source   broadcast   source  address
              (255.255.255.255).  Note that this may get the  arping
              unanswered since it's not normal behavior for a host.

       -B     Use   instead   of   host   if  you  want  to  address
              255.255.255.255.

       -c count
              Only send count requests.

       -d     Find duplicate replies.  Exit  with  1  if  there  are
              answers from two different MAC addresses.

       -D     Display  answers  as  exclamation  points  and missing
              packets as dots.  Like flood ping on a Cisco.

       -e     Like -a but beep when there is no reply.

       -F     Don't try to be smart about the interface  name.  Even
              if  this  switch is not given, -i disables this smart‐
              ness.

       -h     Displays a help message and exits.

       -i interface
              Don't guess, use the specified interface.

       -p     Turn on promiscious mode on interface, use this if you
              don't "own" the MAC address you are using.

       -q     Does not display messages, except error messages.

       -r     Raw  output:  only the MAC/IP address is displayed for
              each reply.

       -R     Raw output: Like -r but shows "the other one", can  be
              combined with -r.

       -s MAC Set  source  MAC  address. You may need to use -p with
              this.

       -S IP  Like -b and -0 but with set source address.  Note that
              this  may get the arping unanswered if the target does
              not have routing to the IP. If you don't  own  the  IP
              you  are  using,  you  may need to turn on promiscious
              mode on the interface (with -p). With this switch  you
              can find out what IP-address a host has without taking
              an IP-address yourself.

       -t MAC Set target MAC address to use when pinging IP address.

       -T IP  Use -T as target address when pinging MACs that  won't
              respond  to a broadcast ping but perhaps to a directed
              broadcast.

              Example:

              To check the address of MAC-A, use knowledge of MAC-B and IP-B.

              $ arping -S <IP-B> -s <MAC-B> -p <MAC-A>

       -u     Show index=received/sent instead of just index=received when
              pinging MACs.

       -v     Verbose output. Use twice for more messages.

       -w     Time to wait between pings, in microseconds.


EXAMPLES
       # arping -c 3 88.1.180.225
       ARPING 88.1.180.225
       60 bytes from 00:11:85:4c:01:01 (88.1.180.225): index=0 time=13.910 msec
       60 bytes from 00:11:85:4c:01:01 (88.1.180.225): index=1 time=13.935 msec
       60 bytes from 00:11:85:4c:01:01 (88.1.180.225): index=2 time=13.944 msec

       --- 88.1.180.225 statistics ---
       3 packets transmitted, 3 packets received,   0% unanswered

       # arping -c 3 00:11:85:4c:01:01
       ARPING 00:11:85:4c:01:01
       60 bytes from 88.1.180.225 (00:11:85:4c:01:01): icmp_seq=0 time=13.367 msec
       60 bytes from 88.1.180.225 (00:11:85:4c:01:01): icmp_seq=1 time=13.929 msec
       60 bytes from 88.1.180.225 (00:11:85:4c:01:01): icmp_seq=2 time=13.929 msec

       --- 00:11:85:4c:01:01 statistics ---
       3 packets transmitted, 3 packets received,   0% unanswered

BUGS
       You have to use -B instead of arpinging 255.255.255.255,  and
       -b instead of -S 255.255.255.255. This is libnets fault.

SEE ALSO
       ping(8), arp(8), rarp(8)

AUTHOR
       Arping was written by Thomas Habets <thomas@habets.se>.

       http://www.habets.pp.se/synscan/

       git clone http://github.com/ThomasHabets/arping.git



arping                     21th June, 2003                 arping(8)
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