Refer to the exhibit An administrator wants these switches to establish a TRILL region
TRILL is enabled globally and nicknames are set. What must the administrator do so that
each TRILL switch (RBridge) finds the best path to all other TRILL switches?

A.
Create a Virtual Service Instance (VSI) on each switch and define the other switches as
TRILL peers.

B.
Configure DRB priorities on all switch-to-switch links.

C.
Configure IS-IS on VLAN 1 on all the switches.

D.
Enable TRILL with the correct link-type on each switch-to-switch port