I want to assign a LUN to a physical windows server 2008 R2 machine using two 1gb ethernet connections.  I feel that i have everything in place but for some reason i cant get the multipathing to work and I want to see what im missing.
Fas 3240
     Vprod - 276 - 10.127.6.2
     Vprod - 277 - 10.127.7.2
Windows machine
     Ethernet 2 - 10.127.6.10
     Ethernet 3 - 10.127.7.10
Ethernet 2 is on vlan 276
Ethernet 3 is on vlan 277  I can ping both vprod interfaces from the windows machine.
I am able to discover both initiators but i can assign one of them.  If I open MPIO the iscsi multipathing option is greyed out.
Any thoughts?