5 messages in net.nether.puck.cisco-nsp[c-nsp] clear arp-cache interface on ...
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Sascha E. PollokJan 12, 2005 8:00 am 
Brian TurnbowJan 12, 2005 8:16 am 
Clinton WorkJan 12, 2005 10:52 am 
Rodney DunnJan 12, 2005 11:49 am 
Rodney DunnJan 13, 2005 4:18 pm 
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Subject:[c-nsp] clear arp-cache interface on Subinterfaces?Actions...
From:Clinton Work (clin@scripty.com)
Date:Jan 12, 2005 10:52:50 am
List:net.nether.puck.cisco-nsp

I often use this trick to clear a single ARP entry:

conf t no arp x.x.x.x end

Works with at least IOS 12.0 and onwards.

Sascha E. Pollok wrote:

Folks,

I recently had to debug some customer's ARP problem. Due to this, I had to flush several of his MAC addresses from our arp-cache more than once. I found, that the "clear arp-cache" command supports giving the related interface using "clear arp-cache interface FastEthernet..".

This is not bad but why doesn't IOS support FastEthernet subinterface-numbers like "clear arp-cache interface FastEthernet0/1.15" ?

I am still able to clear the arp cache by shut-noshut the interface but I am wondering why I can give the physical interface, only.