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arping(8)                                                            arping(8)




NAME

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



SYNOPSIS

       arping  [-0aAbBdDeFhpqrRuUv]  [-S host/ip] [-T host/ip] [-s MAC]    [-t
       MAC] [-c count] [-i interface] [ -w seconds ] [ -W seconds ] [ -V  vlan
       ] [ -Q priority ] [ -g group ] <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  tech-
       nical 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 timing.  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 nor-
              mal behavior for a host.

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

       -c count
              Only send count requests.

       -C count
              Only wait for count replies, regardless of -c and -w.

       -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 smartness.

       -g group
              setgid() to this group instead of the nobody group.

       -h     Displays a help message and exits.

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

       -m type
              Type  of  timestamp  to  use for incoming packets.  Use -vv when
              pinging to list available ones.

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

       -P     Send ARP replies instead of requests. Useful with -U.

       -q     Does not display messages, except error messages.

       -Q priority
              802.1p  priority  to  set.  Should be used with 802.1Q tag (-V).
              Defaults to 0.

       -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  tak-
              ing 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.

       -U     Send unsolicited ARP. This sets the destination MAC address in
              the ARP frame to the broadcast address. Unsolicited ARP is used
              to update the neighbours' ARP caches.

              Example:

              $ arping -i <interface> -U <interface IP>

       -v     Verbose output. Use twice for more messages.

       -V vlan
              VLAN tag to set. Defaults to no VLAN tag.

       -w sec Specify a timeout before ping exits regardless of how many packets have been sent or received.

       -W sec Time to wait between pings.




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

       # arping -C 2 -c 10 -r 88.1.180.225
       00:11:85:4c:01:01
       00:11:85:4c:01:01




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)

arping 2.19 - Generated Tue Aug 8 13:54:11 CDT 2017
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