300-620 Exam Dumps : Implementing Cisco Application Centric Infrastructure

To implement the Inter-Site Network (ISN) for a Cisco ACI Multi-Site deployment, the following configuration steps are essential:

Configure OSPF on all ISN routers: OSPF (Open Shortest Path First) is a routing protocol that is used to ensure that all routers in the ISN have the necessary routing information to forward packets between sites.

Configure BIDIR-PIM on all ISN routers: BIDIR-PIM (Bidirectional Protocol Independent Multicast) is used for efficient multicast traffic forwarding across the ISN. This is particularly important for Cisco ACI Multi-Site deployments as it supports the replication of broadcast, unknown unicast, and multicast (BUM) traffic across sites.

References :=

Cisco ACI Multi-Site Configuration Guide

Cisco ACI Multi-Site Architecture White Paper

In a Cisco ACI bridge domain and VRF configured with a default data-plane learning configuration, the two endpoint attributes that are programmed in the leaf switch when receiving traffic are:

Local MAC, IP (Option D)5.

Local Subnet (Option E)5. These attributes are learned by the ACI fabric through common network methods such as ARP, GARP, and ND, as well as through the data-plane. The local MAC and IP addresses are learned and used for traffic routing and bridging, while the local subnet information is used for traffic optimization and endpoint location tracking56.

 In a Cisco ACI fabric, the spine switches are typically configured as route reflectors. This is because spine switches are central to the fabric’s architecture and are responsible for interconnecting all the leaf switches, making them ideal for reflecting BGP routes within the fabric. Therefore, the components that should be configured as route reflectors are:

Spine1 (Option A)

Spine2 (Option C)