300-620 Exam Dumps : Implementing Cisco Application Centric Infrastructure (300-620 DCACI)

To configure communication between the EPGs in different tenants, the subnet scope should be set to “Shared between VRFs”. This allows the subnet to be shared across different VRFs, enabling communication between EPGs that are in different tenants but within the same VRF. By marking the subnet as shared, it becomes visible to other VRFs, which is necessary for inter-tenant communication1.

References :=

Learning ACI - Part 12: Inter-VRF and Inter-Tenant Communication

 For a blade server that lacks support of bonding, the port channel mode that results in “route based on originating virtual port” on the VMware VDS is MAC Pinning-Physical-NIC-load (Option B). This mode ensures that the virtual machine traffic is distributed across the available uplinks based on the MAC address of the originating virtual port1.

In a Cisco ACI fabric, Spanning Tree Protocol (STP) Bridge Protocol Data Units (BPDUs) that are generated by an external switch, such as Switch2 in this scenario, are indeed forwarded across the fabric. This allows externally connected switches to maintain a loop-free topology. While Cisco ACI does not participate in STP as it uses its own protocols and mechanisms for loop prevention within the fabric, it will forward STP BPDUs across End Point Groups (EPGs) on which they are received1. This ensures that the connected external switches can still use STP for their loop prevention mechanisms.

References :=

Cisco Community Discussion on STP BPDUs in ACI1