How to send Gratuitous ARP ?

[Rajesh Gupta]

How to send Gratuitous ARP ?

I have a situation where I want to use Gratuitous ARP to associate a new
MAC address with an established IP address. This is done for
fault-tolerance.
I have a real-time host with two MAC interfaces, but one IP address. When
the board hosting the active MAC interface goes down, the standby board
picks up. The new board has its own MAC address which it needs to broadcast
to the network.

Is there any API or ways to send the Gratuitous ARP over the network? I know
when we add the new IP address
on the interface, OS does send the Gratuitous ARP on the network. I can not
add/remove the IP address from the interface. I am working on Windows Server
2003.

I checked the IP helper functions in MSDN but without help.

Thanks in advance.
Rajesh

 

[Roland Hall]

in message
: How to send Gratuitous ARP ?
:
: I have a situation where I want to use Gratuitous ARP to associate a new
: MAC address with an established IP address. This is done for
: fault-tolerance.
: I have a real-time host with two MAC interfaces, but one IP address. When
: the board hosting the active MAC interface goes down, the standby board
: picks up. The new board has its own MAC address which it needs to
broadcast
: to the network.
:
: Is there any API or ways to send the Gratuitous ARP over the network? I
know
: when we add the new IP address
: on the interface, OS does send the Gratuitous ARP on the network. I can
not
: add/remove the IP address from the interface. I am working on Windows
Server
: 2003.
:
: I checked the IP helper functions in MSDN but without help.

Your question contradicts itself. See if this will help:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;244331

--
Roland Hall
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