An engineer is running an ACI fabric, has VMM integration with VMware vCenter, and wants to enable microsegmentation based on vCenter VM attributes. Which statement describes microsegmentation in this scenario?
A.
ACI does not support microsegmentation based on vCenter VM attributes. The network attributes should be used for microsegmentation.
B.
When enabled, microsegmentation performs distributed switching and routing on the ESXi hosts.
C.
Microsegmentation is supported only using AVE or AVS.
D.
An ACI microsegmented EPG automatically creates a port group with a private VLAN configured on a VMware vCenter distributed virtual switch.
Packet Forwarding for VMware VDS
When you enable Microsegmentation with Cisco ACI, Cisco APIC allocates a pair of VLANs (PVLANs) and configures a PVLAN portgroup on VMware vCenter. Doing so forces traffic to go to the leaf switch even if two VMs in the same portgroup try to talk to each other.
You must configure a PVLAN on blade switches of ESXi servers are not directly connected to leaf switches.
Correct answer is B.
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2019/pdf/BRKDCN-3001.pdf
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2019/pdf/BRKACI-2301.pdf
Also by process of elimination:
A is false.
C is false. ACI also supports Hyper-V and VMware VDS.
D is false. There is a concept of Primary VLAN (PVLAN) in ACI. This answers muddies the waters with "private VLAN"
D looks correct:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/4-x/virtualization/Cisco-ACI-Virtualization-Guide-42x/Cisco-ACI-Virtualization-Guide-421_chapter_0101.pdf
"A Cisco ACI virtual machine manager (VMM) domain creates an isolatedPVLAN port group at the VMware
VDS or Microsoft Hyper-V Virtual Switch for each EPG that has intra-EPG isolation enabled."
upvoted 3 times
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