Running Guest off of another interface has not been tested thus it
is not officially supported. You will have the best chance running
Guest on Gig1 and your Profiler collection probes on Gig2 or Gig3.
Another problem with moving guest portal to a second interface
is that there is currently no option to set a separate management and
guest certificate. The management certificate is required to be
generated to the hostname of ISE. That means you would have to have
your users in the DMZ get a DNS response for gig1 and the internal
subnets get a DNS response of gig0 for the same hostname. I believe
this is the main reason we do not support moving the guest portal off of
gig0 at this time.
