[SunHELP] multipathing

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I'd like to know how I could verify which adapter listed by the OS corresponds to which slot/port in the actual NIC itself.  This way I can assure that an active port will failover to a port on the other NIC.  I have two NIC's w/2 ports each.

(root at test)-> ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000 
qfe0: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 2
        inet X.X.X.20 netmask ffffff00 broadcast X.X.X.255
        groupname test
        ether X:X:X:X:X:X 
qfe0:1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet X.X.X.18 netmask ffffff00 broadcast X.X.X.255
qfe1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 3
        inet X.X.X.21 netmask ffffff00 broadcast X.X.X.255
        groupname test
        ether Y:Y:Y:Y:Y:Y 
qfe1:1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
        inet X.X.X.19 netmask ffffff00 broadcast X.X.X.255