300-630 Exam Dumps : Implementing Cisco Application Centric Infrastructure - Advanced (DCACIA)

To allow reachability to services outside of the Cisco ACI fabric while conserving TCAM resources, an engineer should use a contract insertion method where L30ut external EPGsact as providers and vzAny inside VRF acts as consumers. This configuration allows for communication from all EPGs within a VRF (represented by vzAny) to access external services through L30ut without having to create individual contracts for each service EPG, thus saving TCAM resources. 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

 In Cisco ACI fabric, STP BPDUs are flooded in the bridge domain VLAN. This allows the BPDUs to be propagated throughout the fabric, maintaining the STP topology2.

References := Implementing Cisco Application Centric Infrastructure Official Cert Guide