Cisco Updated 300-620 Exam Questions and Answers by jai

 In Cisco ACI, communication between Endpoint Groups (EPGs) is controlled by contracts. Contracts define the types of traffic and the rules that govern how EPGs can communicate with each other. They act as a policy framework that enforces security and segmentation within the ACI fabric.

The two IP address types that are available for transport over the Inter-Site Network (ISN) when they are configured from Cisco ACI Multi-Site Orchestrator (MSO) are the Anycast Overlay Multicast Tunnel Endpoint (TEP) and the MP-BGP EVPN Router-ID. These IP addresses are used for inter-site communication and routing in a Multi-Site deployment.

When designing two data centers based on Cisco ACI technology that can extend L2/L3, VXLAN, and network policy across locations with ACI Multi-Pod, the two requirements that must be considered are:

A single APIC Cluster is required in a Multi-Pod design4.

ACI Multi-Pod requires an IP Network supporting PIM-Bidir2.

 When configuring ACI VMM domain integration with Cisco UCS-B Series, the type of port channel policy that must be configured in the vSwitch policy is MAC Pinning-Physical-NIC-load. This policy type allows for the distribution of traffic across physical NICs based on MAC address hashing, which is suitable for environments where dynamic port channels (LACP) are not used.