Refer to the exhibit. Which two configuration steps are required in ISN for Cisco ACI Multi-Site setup? (Choose two.)
A. Connect Spine2 to ISN routers.
B. Configure BIDIR-PIM throughout the ISN
C. Increase ISN MTU to support the maximum MTU that is sent by endpoints
D. Configure OSPF between spines and ISN routers
E. Enable IGMPv3 on ISN routers
