Re: Multiple subnets on one physical net


Ron Natalie (ron@topaz.rutgers.edu)
Mon, 9 Nov 87 13:27:09 EST


It is important for the general health of an complex IP network to
keep hosts that are not supposed to be functioning as routers (gateways)
from forwarding packets at all. This more than anything else has
caused more problems, e.g.:

        Host receives broadcast packet with wrong type broadcast
        IP address and tries to ARP for it, sending host into
        tight loop (Old Wollongong VMS TCP/IP).

        Host receives packet for some host other than itself, tries
        to send an ICMP error packet and generates bogus ARP field
        causing other hosts to think that it was the host that sent
        the packet (Ungerman Bass TCP).

-Ron



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