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Multiple NICs - Which does Windows select?


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I have a LAN consisting no routers (i.e. no gateway configured) and pairs of servers on a common segment. In addition to the NIC used for the common segment, each pair have a second back-to-back ethernet connection to each other, used for heartbeat packets.

The public subnet is 192.168.1.0, while the private connection is 10.0.0.0.

When there is no routing information configured - nor a gateway - and 2 NICs, which does Windows select to reach a destination address?

I have one static route configured to point all 10.0.0.0 traffic at the second NIC, but how do I know that Windows doesn't try the 2nd NIC first to reach destinations on the common segment...or does the routing stack ARP for these?

Is the algorithm 1) ARP, 2) use configured routes and 3) send to the gateway if unsuccessful?

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