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

The L2 Stretch feature allows for the extension of a Layer 2 network across multiple sites without changing the IP addressing scheme, which satisfies the requirement for starting an application at a DR site without re-IPing servers. Disabling inter-site BUM (Broadcast, Unknown unicast, and Multicast) traffic prevents broadcast storms between sites while still allowing IP mobility, meeting both specified criteria. References := (Implementing Cisco Application Centric Infrastructure Official Cert Guide)

In a Cisco ACI Multi-Pod design, having separate Layer 3 Out (L3Out) connections for each pod is recommended when implementing active-standby firewalls in different pods. This setup allows for independent routing and failover mechanisms, ensuring that each pod can maintain external connectivity even if one firewall fails.

References := Implementing Cisco Application Centric Infrastructure Official Cert Guide

To prevent MAC flapping on Cisco UCS Fabric Interconnects and ACI leaf switches, MAC Pinning should be selected for the VMM vSwitch Port Channel policy. This ensures consistent uplink usage for each virtual machine’s traffic, avoiding MAC address movement across multiple uplinks.

References := Implementing Cisco Application Centric Infrastructure Official Cert Guide

 In a Cisco ACI environment, when an ARP request is initiated by VM1 for VM2 and VM2 is not known within the ACI fabric, the leaf switch (Leaf 101) will forward the ARP request to a spine switch that acts as a proxy VTEP. The spine switch will either respond to the ARP request if it knows VM2’s location through the COOP database or will flood the ARP request within the fabric if VM2’s location is unknown. References: Implementing Cisco Application Centric Infrastructure Official Cert Guide

 To enable inter-VRF communication, one must configure settings that allow subnets to be advertised externally and establish contract interfaces between VRFs. Option B, “Enable Advertise Externally under the subnet scope,” allows subnets to be advertised outside their home VRFs. Option E, “Export the contract and import as a contract interface,” enables communication between different VRFs by creating an exportedcontract from one VRF that can be imported into another as an interface contract. References := Implementing Cisco Application Centric Infrastructure Official Cert Guide

The integration of service nodes in transparent mode with a Cisco ACI Multi-Pod setup is achieved by using an active-standby firewall mode stretched across pods. This configuration ensures that the standby node takes over if the active node fails, providing high availability and seamless operation. References := Cisco ACI Multi-Pod and Service Node Integration White Paper

 In a Cisco ACI fabric, when configuring a Layer 4 to Layer 7 device for routing traffic through an external firewall connected to the inside of the fabric, the appropriate Function Type in the service graph must be selected to ensure that traffic from both POD-1 and POD-2 passes through the routed firewall when using L3Out. The “GoTo” Function Type is used in scenarios where all traffic destined for L3Out needs to be redirected through a service node like a firewall. This ensures that regardless of the source pod, traffic will traverse the service node before exiting the fabric. References: Implementing Cisco Application Centric Infrastructure Official Cert Guide

In Cisco ACI Multi-Pod, when ARP flooding is enabled, broadcast traffic within a bridge domain is managed by associating a multicast address to the bridge domain. The broadcast frames are then forwarded within the pod and across the Inter-Pod Network (IPN) using this multicast address.

References := Implementing Cisco Application Centric Infrastructure Official Cert Guide

 When EPGs (Endpoint Groups) are stretched across sites, Layer 2 flooding is available across these sites. This allows for the extension of the Layer 2 domain and the sharing of broadcast, unknown unicast, and multicast traffic between EPGs at different locations.

References: = Implementing Cisco Application Centric Infrastructure Official Cert Guide

In an ACI setup, to advertise a default static route from L3Out-1 to another L3Out using OSPF, the Aggregate Export Subnet feature must be enabled. This allows for the summarization and advertisement of routes, including the default route, to external networks via OSPF.

References := Implementing Cisco Application Centric Infrastructure Official Cert Guide