Which of the following is true concerning the Global Chassis Discovery policy configuration on the
Cisco Unified Computing System Manager when using Cisco Unified Computing System 22XX I/O
modules with Cisco UCS 62XX Fabric Interconnects?
A.
The link grouping preference should be set to discrete mode when the number of northbound
links are not a power of 2.
B.
Set the action policy-count higher than the actual number of uplinks; otherwise, the Cisco
Unified Computing System servers will not be discovered.
C.
For Cisco Unified Computing System implementations that mix I/O modules with different
numbers of links, it is best to manually reacknowledge the chassis in order to use all available
links.
D.
Automatic reacknowledgement due to chassis discovery is never disruptive.
The chassis/FEX discovery policy determines how the system reacts when you add a new chassis or FEX.
Cisco UCS Manager uses the settings in the chassis/FEX discovery policy to determine the minimum threshold for the number of links between the chassis or FEX and the fabric interconnect and whether to group links from the IOM to the fabric interconnect in a fabric port channel.
Chassis Links
If you have a Cisco UCS domain that has some of the chassis wired with 1 link, some with 2 links, some with 4 links, and some with 8 links Cisco recommend that you configure the chassis/FEX discovery policy for the minimum number links in the domain so that Cisco UCS Manager can discover all chassis.
After the initial discovery, you must reacknowledge the chassis that are wired for a greater number of links and Cisco UCS Manager configures the chassis to use all available links.
Answer C
see
http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/sw/gui/config/guide/2-1/b_UCSM_GUI_Configuration_Guide_2_1/b_UCSM_GUI_Configuration_Guide_2_1_chapter_01100.pdf