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SEND_ARP(8)							   SEND_ARP(8)

NAME
       send_arp	 -  tool  to  notify network of a new IP address / MAC address
       mapping

SYNOPSIS
       send_arp takes the supplied data and sends it out as an	arp  broadcast
       on  the	specified network device. This tool is mostly used by software
       (such as piranha) that manipulates virtual IP addresses	and  needs  to
       notify the network that the device servicing an IP address has changed.

       send_arp [-i ARG"]old-ip-addrold-mac-addrnew-ip-addrnew-mac-addr"

DESCRIPTION
       send_arp	 sends	out  an	 arp broadcast on the specified network device
       (defaults to eth0), reporting an old and new IP address	mapping	 to  a
       MAC  address.  This  is	most useful in situations involving virtual IP
       addresses, where the network device servicing that address has changed,
       and other network arp caches need to be notified about it. All the data
       is specified in the command line and is simply passed along in  an  arp
       message	frame.	 Since	the old and new data specified can contain the
       same information, this tool can also be used to refresh arp  caches  or
       send periodic broadcasts.

       send_arp	 simply	 takes	the  specified arguments and places them in an
       ethernet arp broadcast.is a daemon used by pulse to monitor the running
       status  of  the specified services on clustered servers.	 This tool has
       NO error checking and should not be run without the direct  supervision
       of pulse!

OPTIONS
       -iARG  Optional. Indicates the network device to send the arp broadcast
	      on. If omitted, the program defaults to eth0.

       old-ip-addr
	      The original IP address (specified  in  nnn.nnn.nnn.nnn  format)
	      that  the	 MAC address specified in "old-mac-addr" had mapped to
	      it.

       old-mac-addr
	      The MAC address that was servicing the IP address	 specified  in
	      "old-ip-addr".   The MAC address is specified in hex, and can be
	      formatted with or without colon (":") separators.

       new-ip-addr
	      The new IP address (specified in	nnn.nnn.nnn.nnn	 format)  that
	      the  MAC	address	 specified in "new-mac-addr" now has mapped to
	      it.

       new-mac-addr
	      The MAC address that is now servicing the IP  address  specified
	      in  "new-ip-addr".  The MAC address is specified in hex, and can
	      be formatted with or without colon (":") separators.

AUTHOR
       send_arp: Yuri Volobuev 1997
       man page: Keith Barrett <kbarrett@redhat.com>

4th Berkeley Distribution	Thu May 10 2001			   SEND_ARP(8)

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