Which two are true regarding the switching modes on the Cisco UCS 62XX Fabric Interconnect? (Choose two.)
A. End-host mode presents a link to a northbound uplink switch as a host trunk with STP.
B. For northbound traffic, server MAC addresses are statically assigned to an uplink; the return path is controlled by the northbound switch.
C. A FI port in Ethernet switching mode appears to the uplink switch as a host with several MAC addresses.
D. Server-to-server traffic in the same VLAN are locally switched and not sent to the northbound switches.
E. A MAC address table is not used to forward traffic to the uplink switch.
F. A MAC address forwarding table is maintained for server-to-server communications for inter-VLANs communications.
Answer: D and E.
The UCS 62XX Fabric Interconnect has two fabrics, Fabric A and Fabric B. If the servers belong to the Fabric and are on the same VLAN, then traffic is locally switched, an external switch is required for switching between servers if virtual network interface cards (vNICs) belonging to the same VLAN are mapped to different fabrics. MAC address learning only happens for the server ports, therefore any unknown destination MAC address are sent to the up links.
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