Thanks Piotr. Yes simulating Proxy-ARP requires quite a lot of thinking and I did it :-)
I did some investigation and the answer for my question is "ip local-proxy-arp" which is disabled by default. The reason for raising this question for making communication between isolated ports of Private Vlans. One ways is using Proxy ARP and the other is by adding a host route to isolated host with next hop of default gateway. For the l3 router to reply with proxy ARP to local subnet request from the isolated host, "ip local-proxy-arp" is required to be configured. With regards Kings On Wed, May 25, 2011 at 4:46 PM, Piotr Matusiak <[email protected]> wrote: > Hi Kings, > > It is really rare to see Proxy ARP at work :) > > This article should answer your question. > > > http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094adb.shtml > > Regards, > Piotr > > > 2011/5/25 Kingsley Charles <[email protected]> > >> Hi all >> >> Proxy ARP is the process where a router responds to an ARP request with >> it's MAC address. By default, Proxy ARP is enabled on Cisco routers. >> >> Let's consider the following topology and all the three devices are in >> 10.20.30.0/24 subnet. >> >> >> Host A ------------------------- >> I -------------------------- Router >> Host B ------------------------ >> >> >> >> Now, if Host A sends an ARP request to Host B. Both Host B and the router >> (Proxy ARP) should send an ARP response, isn't it? But in reality this >> doesn't happen. Is this because the router doesn't send Proxy ARPs, if the >> routes are directly connected? >> >> >> >> >> >> With regards >> Kings >> >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> Are you a CCNP or CCIE and looking for a job? Check out >> www.PlatinumPlacement.com >> > >
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
