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Network Engineering

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  • All hosts are in different subnets... I was trying to emphasize that there are only 4. Commented Mar 26, 2020 at 11:09
  • I have added those details to the answer. Commented Mar 26, 2020 at 11:13
  • And in the route table, I search for the source ip address from the ARP request, or I search for the IP i want to search for by ANDING it with the current mask and finding a prefix? and the if the prefix matches I send on that particular interface? Commented Mar 26, 2020 at 11:14
  • Also, If I am the router, how to I send the ARP_packet broadcast, is it okay how I did in the question? Or do I have to set the destination hw address of the arp packet some special value to denote that it is indeed a broadcast? Commented Mar 26, 2020 at 11:29
  • 1
    @C.Cristi "I as the router send this ARP req broadcast to every interface" No, that is not how ARP works. Every router interface is in a different network, but ARP is only for one network. You use ARP to resolve the layer-3 (network) address to the layer-2 address. For a particular destination, you only send an ARP request on the network where that host will be found. Commented Mar 27, 2020 at 13:39