Refer to the exhibit. An engineer plans to upgrade the Cisco ACI fabric. Leaf1 and Leaf2 are deployed in a VPC. The fabric is peering with R1 using BGP protocol. Which two actions upgrade the fabric nondisruptively? (Choose two.)
A.
Configure the Graceful upgrade option.
B.
Disable the BGP neighborship between Cisco ACI fabric and R1.
C.
Enable the Graceful Insertion and Removal option.
D.
Configure one maintenance group for every leaf.
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/4-x/rest-api-config/Cisco-APIC-REST-API-Configuration-Guide-401/Cisco-APIC-REST-API-Configuration-Guide-401_chapter_01001.pdf
If you put a switch in maintenance mode, that switch is not considered as a part of the operational ACI
fabric infra and it will not accept regular APIC communications. Therefore, performing a firmware
upgrade for a switch in this state is not supported, since it may fail or may get stuck in an incomplete
status indefinitely if you attempt to perform a firmware upgrade on it while it is in this state.
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/4-x/rest-api-config/Cisco-APIC-REST-API-Configuration-Guide-401/Cisco-APIC-REST-API-Configuration-Guide-401_chapter_01001.pdf
If you put a switch in maintenance mode, that switch is not considered as a part of the operational ACI
fabric infra and it will not accept regular APIC communications. Therefore, performing a firmware
upgrade for a switch in this state is not supported, since it may fail or may get stuck in an incomplete
status indefinitely if you attempt to perform a firmware upgrade on it while it is in this state.
A and D: Graceful Insertion and Removal, cannot be used for Upgrades, it is meant for isolation, debugs...
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