300-620 Exam Dumps - Implementing Cisco Application Centric Infrastructure (300-620 DCACI)

When extending EPG connectivity to an external network that houses the Layer 3 gateway and other end hosts, the ACI bridge domain configuration should use Forwarding: Custom, L2 Unknown Unicast: Hardware Proxy, L3 Unknown Multicast Flooding: Flood, Multi Destination Flooding: Flood in BD, and ARP Flooding: Enabled23. This configuration ensures that unknown unicast traffic is handled efficiently while still allowing ARP flooding, which is necessary for the ACI fabric to learn about endpoints on the external network23.

In a Cisco ACI configuration with IEEE 802.1p ports, the traffic exits from the EPG untagged from leaf ports. This means that when the port is configured in Access (802.1p) mode and the access VLAN is the only VLAN deployed on the port, then traffic will be untagged on egress56.

To implement management policy and data plane separation in the Cisco ACI fabric, the ACI object that must be created in Cisco APIC is a Bridge domain

To determine which user is responsible for the disappearance of a previously existing port group from vCenter, the engineer should check the EPG audit logs for any ‘deletion’ actions. By comparing the affected object and the user who performed the action, the engineer can identify the responsible individual2.

The method that the Cisco ACI fabric uses to load-balance multidestination traffic is forwarding tag trees3. This method involves assigning a forwarding tag (FTAG) to the traffic when it is forwarded within the fabric, ensuring efficient load balancing of multi-destination traffic3.

https://www.cisco.com/c/en/us/td/doc s/switches/datacenter/aci/apic/sw/1-x/aci-fundamentals/b_ACI-Fundamentals/b_ACI-Fundamentals_chapter_010010.html

To move the gateway address for VLAN 1001 from the core outside the Cisco ACI fabric into the Cisco ACI fabric and ensure that endpoints in EPG-1001 route traffic to endpoints in other EPGs while minimizing flooded traffic in the fabric, the following configuration set is needed on the bridge domain:

Enable Hardware Proxy: This step involves enabling the hardware proxy feature, which allows the fabric to learn and maintain endpoint information more efficiently7.

Enable Unicast Routing: This step involves enabling unicast routing within the bridge domain, which allows for the routing of traffic between different EPGs and minimizes flooded traffic