[c-nsp] Individual ARP clearing on cat6k

[Gert Doering]

Hi,

On Wed, Mar 15, 2006 at 11:01:58AM -0700, 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.  

If the firewall is well-behaved, and sending out gratuitous (sp?) ARPs
upon activation of the new IP, the Cisco should learn the new ARP entry
just fine...

Otherwise you might want to reduce the ARP timeout to 30 seconds while
moving IPs.

gert

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Gert Doering - Munich, Germany                             gert at greenie.muc.de
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