[c-nsp] Individual ARP clearing on cat6k

[Tom Sands]

Greg Schwimer wrote:

> I have a need to clear the arp entry for single IP addresses pretty
> frequently.  I'm running Sup720 w/ 12.2(18)SXE4.  In a given VLAN, I need
> frequently need to move a /32 IP that is active on a host on the VLAN to a
> firewall that resides on the same subnet.  This change in mac address causes
> the IP to go unreachable until the arp timout occurs for that entry (up to 4
> hours), or I clear the arp table for the entire VLAN.  Unfortunatly, the
> command structure for IOS only allows clearing arp entries for an entire
> interface rather than individually.

You can clear individual ARPs.  You just don't use the clear command


conf t
no arp <IP>
end


> 
> Any ideas on a safe workaround to this?
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-- 
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Tom Sands			  				
Chief Network Engineer				
Rackspace Managed Hosting	    	
(210)447-4065		   	
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