A customer migrates a legacy environment to Cisco ACI. A Layer 2 trunk is configured to interconnect the two environments. The customer also builds ACI fabric in an application-centric mode. Which…

The correct answer is C. Set Multi-Destination Flooding to Flood in Encapsulation. IMPORTANT In a single BD with Multiple EPGs, each EPG is defined by a different VLAN encapsulation. IF those VLANs extend into you legacy non-ACI network, then (by default) these frames will leak from one VLAN to another - which is probably NOT what you want, which is why there…

ACI Fabric Infrastructure

Question

A customer migrates a legacy environment to Cisco ACI. A Layer 2 trunk is configured to interconnect the two environments. The customer also builds ACI fabric in an application-centric mode. Which feature should be enabled in the bridge domain to reduce instability during the migration?

Options

ASet Multi-Destination Flooding to Flood in BD.
BEnable Flood in Encapsulation.
CSet Multi-Destination Flooding to Flood in Encapsulation.
DDisable Endpoint Dataplane Learning

How the community answered

(21 responses)

A
5% (1)
B
14% (3)
C
76% (16)
D
5% (1)

Explanation

IMPORTANT In a single BD with Multiple EPGs, each EPG is defined by a different VLAN encapsulation. IF those VLANs extend into you legacy non-ACI network, then (by default) these frames will leak from one VLAN to another - which is probably NOT what you want, which is why there is a Multi-Destination Flooding option to Flood in Encapsulation - to prevent leakage from one EPG to another - but again, this may break some protocols. But before setting your BD to Flood in Encapsulation re-read the IF statement above.

Topics

#Multi-Destination Flooding#L2 Migration#Bridge Domain#Network stability

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