Home » Cisco » 350-080 » Which two statements about end-host mode in SAN connectivity in a Cisco UCS environment are true?
Which two statements about end-host mode in SAN connectivity in a Cisco UCS environment are true? (Choose two.)
A. End-host mode is synonymous with NPV mode.
B. In end-host mode, only hard pinning of vHBAs to Fibre Channel uplink ports is allowed.
C. Making configuration changes between Fibre Channel switching mode and end-host mode is nondisruptive.
D. End-host mode is the default Fibre Channel switching mode.
Correct Answer: AD
Explanation/Reference:
Explanation:
End-host mode allows the fabric interconnect to act as an end host to the network, representing all server (hosts) connected to it through vNICs. This is achieved by pinning (either dynamically pinned or hard pinned) vNICs to uplink ports, which provides redundancy toward the network, and makes the uplink ports appear as server ports to the rest of the fabric. When in end-host mode, the fabric interconnect does not run the Spanning Tree Protocol (STP) and avoids loops by denying uplink ports from forwarding traffic to each other, and by denying egress server traffic on more than one uplink port at a time. End-host mode is the default Ethernet switching mode and should be used if either of the following are used upstream:
Layer 2 switching for L2 aggregation
Virtual Switching System (VSS) aggregation layer
Reference: http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/sw/gui/config/guide/2-0/b_UCSM_GUI_Configuration_Guide_2_0/b_UCSM_GUI_Configuration_Guide_2_0_chapter_0100.html (End-host mode)
