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Directed ARP on a Cisco router

kfarrington
Level 3
Level 3

Guys,

Simple one here.

If you do a clear ip arp-cache on a cisco box, tried on a 7304, 3745 and 3600, it seems to use a directed ARP mechanism (if there is a routing protocol adjacency) and if not, it uses a broadcast "standard" ARP.

Please see below.

Can anyone explain why this is? Is it anything to do with RFC1433?

Please see attached text file :-

Many kind regards,

Ken

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