[c-nsp] Private VLAN questions.

[Saku Ytti]

On (2005-08-04 13:04 -0400), Matthew Crocker wrote:
 
> How do I configure the Cisco 12000 to respond to those ARP request  
> and send the MAC address for school B to school A when it asks?
> Can I put an ACL on the configuration so it will only ARP for certain  
> IPs?

 I think you need 'ip local-proxy-arp' which I believe is not available
in 12.0S.
 Not reflecting to your situation, but nice feature go with that is
unnumbered VLAN subinterfaces, this disables sending ARP WHO HAS -messages
and only learns neighbours via (snooping) DHCP. In your situation, if
the subnet is huge and you have low bandwidth (eg 256kbps) default rate
of ARP WHO HAS messages might become too high when script kiddies 
are scanning through the range.

-- 
  ++ytti