Your question seems a little foggy, so I'm going to answer it as
best as I can (though this may not be the exact answer to the
question). Is UnixA also routing traffic between its networks?
Is routerA multihomed? Do you want all traffic on the
192.168.100.x subnet to go through RouterA? If so, then make
that the default gateway for all those boxes on that subnet.I
need to get the traffic on UnixA eth1 to route to
192.168.100.101. Traffic on UnixA--as long as the traffic is
local to the 192.168.100.x subnet--should be automatically sent
out eth1, directly to its destination. If all your boxes are on
the same subnet (192.168.100.130, 192.168.100.100,
192.168.100.101) then your routing tables will not be consulted
at all, unless the destination IPs lies outside of that subnet.
* Subnets *rely on ARP brodcasts for local address location.
Only when ARP broadcasts fail to return a MAC address for a
given IP will a computer then send packets to its default
gateway. If you want packets for destinations other then the