By default subnet0 is setup for the 1gig interfaces on most Isilon clusters.  If you do not wish to have the 1gig network active at all, you can delete the pool and subnet where the 10gig interfaces are, then remove the 1gig interfaces from subnet0 and add in your 10gig SFP+ interfaces.  This needs to be done from the command line, and is best done from the serial console, so it doesn't involve the network.  First delete the pool and subnet containing your 10gig interfaces     # isi networks delete pool --name=somesubnet:somepool     # isi networks delete subnet --name=somesubnet  Then just delete the pool in your gigE subnet (do this from console).     # isi networks delete pool --name=subnet0:pool0  Then, modify the subnet so its on the right network:     # isi networks modify subnet --name=subnet0 --gateway=10.14.250.1  Now, create a new pool in that subnet:    # isi networks create pool --name=subnet0:10gig --ranges=10.14.250.101-10.14.250.110 --ifaces=1-7:10gige-1  Verify that your commands executed successfully and accomplished what you desired:    # isi networks list ifaces –v    # isi_for_array –s “ifconfig cxgb1 | grep inet”  Now your 10 gig interfaces are in subnet0 and your 1gige interfaces are not being used.  If you desire to use them at a later time, you can create a ne subnet and pool and add them in, using similar commands.
If you don't have any 1gig infrastructure near your Isilon cluster and only have 10gig, how do you setup just the 10gig network and put it into subnet0?
How do I just use 10gig and not 1gig on my Isilon cluster?