300-630 Exam Dumps - Cisco CCNP Data Center Questions and Answers

 For the Cisco ACI leaf to learn individual MAC addresses from the same physical port, “MAC pinning” mode must be enabled in the vSwitch policy configuration. This mode allows each ESXi vSwitch port group to pin to a specific uplink or set of uplinks, enabling independent MAC address learning for each pinned uplink, which is essential for distinguishing multiple VMs on an ESXi host by the leaf switch. References: Implementing Cisco Application Centric Infrastructure Official Cert Guide

 To prevent connectivity issues for EP1 when accessing an external L3Out network, it’s essential to enable IP data plane learning for the VRF and unicast routing in BD-BD2. IPdata plane learning allows dynamic endpoint learning within a VRF, ensuring accurate forwarding information for EP1. Unicast routing enables packet routing based on destination IP, facilitating proper traffic routing through the gateway.

References := Implementing Cisco Application Centric Infrastructure Official Cert Guide

Enabling ARP flooding is necessary when VMs are migrated from a pre-existing network to Cisco ACI and their gateways remain in the legacy setup. This allows the ACI fabric to learn about silent hosts that do not initiate communication, ensuring that the migrated VMs can communicate with all hosts in the network, including those that are silent.

The design approach shown in the exhibit is application-centric. This model focuses on the application requirements and defines network policies based on the needs of the application rather than traditional network constructs. It allows for a more dynamic and flexible network configuration that aligns with the application’s behavior and interactions.

Bidirectional Protocol Independent Multicast (Bidirectional PIM) is used between the inter-pod network (IPN) and spines within each pod in a Cisco ACI environment to allow broadcast traffic replication between pods. This protocol is designed to efficiently route multicast traffic in scenarios where the same data is being sent to multiple receivers, which aligns with the need for broadcast traffic replication in an interconnected multi-pod ACI architecture. References := ( Implementing Cisco Application Centric Infrastructure Official Cert Guide )

When extending a Cisco ACI Multi-Pod setup to a Multi-Site implementation, configuring BIDIR-PIM in both the IPN (Inter-Pod Network) and ISN (Inter-Site Network) is necessary. This allows for efficient multicast traffic routing between multiple pods and sites.

References: = Implementing Cisco Application Centric Infrastructure Official Cert Guide

In Cisco ACI, Virtual Routing and Forwarding (VRF) instances are used to create separate routing tables for network traffic management. An unenforced VRF does not apply policies or contracts for communication between endpoints, allowing free communication without the need for explicit permissions. By implementing an unenforced VRF in the common tenant and mapping all required Bridge Domains (BDs) to it, each department’s BDs can communicate with one another without configuring contracts or VRF route leaking, thus meeting the company’s requirement for redesigning their networking architecture. References: Implementing Cisco Application Centric Infrastructure Official Cert Guide

For a new Cisco ACI Multi-Site Orchestrator (MSO) node to join an MSO cluster and ensure IP connectivity, it requires connectivity to the Cisco Application Policy Infrastructure Controllers (APICs) over the Out-of-Band (OOB) management network and the management IP of ESXi hosts where the controllers are deployed. The OOB management network allows the MSO node to communicate with the APICs for centralized management and policy control, while the management IP of the ESXi hosts provides the necessary connectivity for the virtual machine infrastructure where the MSO node is deployed123.

References := Cisco ACI Multi-Site Architecture White Paper, Cisco Multi-Site Deployment Guide for ACI Fabrics, ACI Multi-Site Architecture and Deployment - Cisco.

 To enable communication between the subnets 192.168.1.0/24 and 172.18.1.0/24 using Cisco ACI fabric, it is necessary to configure the subnets appropriately. For option B, setting 172.18.1.0/24 as an External subnet for an external EPG under L3out_A allows it to be recognized as part of an external network, facilitating communication with other networks within the ACI environment. Similarly, for option D, configuring 172.18.1.0/24 with the Export Route Control scope under L3out_B ensures that this route is advertised out of L3out_B, allowing it to reach other network segments, including those connected via L3out_A where the subnet 192.168.1.0/24 resides. These configurations are crucial for proper routing between these two distinct subnets across the Cisco ACI fabric.

References := ( Implementing Cisco Application Centric Infrastructure Official Cert Guide )

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