ARP requests on my net?
Ed.Greshko at greshko.com
Wed Apr 5 01:26:06 UTC 2006
Edward Krack wrote:
> Mike McCarty:
>> I've been watching my LAN using tcpdump, and noticed
>> that ARP is running repeatedly on my FC2 machine, and
>> wonder why.
> ARP is used by TCP/IP to resolve an IP address such as
> 172.17.205.79 to a unique hardware address, 00:11:95:0b:cc:28
> Communicates between two computers on the same subnet as the host
> You can improve the connection speed to a server used most often is
> to make the static entry in ARP cache.
I'm not sure how you came to that conclusion. An ARP request/response
takes a very short time and generally happens only when the arp cache
expires for a given IP addresss. The timeout is usually measured in
minutes. If my memory is correct, it is only the ARP request for the
default gateway that happens periodically.
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