Yaroslav Halchenko wrote:

I have 25 nodes all on 10.0.0.0/24 network, new file-server (lets call
it raider) has 2 gigabit ports. I would like to spread the I/O load so
that

10.0.0.16/28 goes through eth1
the rest 10.0.0.0/24 can go through eth0 (as before)

Instead of trying to put certain nodes on eth0 and certain nodes on eth1, have you considered bonding eth0 and eth1 together and letting traffic be spread across them like that? It should automatically balance traffic for you. Plus, if an ethernet port or cable does on the storage server when the ports are bonded, all your nodes can still get to NFS.
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