300-620 Cisco Exam Lab Questions

To ensure that users can access the Cisco APIC GUI with a local account if the RADIUS server is unreachable, the network administrator must enable the fallback check with the default authentication domain. This allows for local authentication as a backup method when RADIUS is not available. The fallback mechanism is crucial for maintaining access to the APIC GUI in case of RADIUS server issues1.

References :=

Cisco Community Discussion on Auth Radius fallback to Local1

Cisco APIC Security Configuration Guide

The supported physical topology for a Cisco ACI data center network that includes Cisco Nexus 2000 Series 10G fabric extenders is depicted in Option A. This topology illustrates a pair of spine switches connected to leaf switches, which are then connected to the fabric extenders. The Cisco Nexus 2000 Series Fabric Extenders act as remote line cards for a parent Cisco Nexus switch, extending the network fabric. The topology shown is a spine-leaf architecture, which is a scalable, high-bandwidth framework that is typical in ACI deployments.

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For a detailed understanding of the ACI fabric and supported topologies, you can refer to the Cisco Application Centric Infrastructure Design Guide, which provides comprehensive information on design recommendations and deployment models: Cisco ACI Design Guide.

To learn more about the role of fabric extenders in the ACI architecture, the following resource offers insights into how they integrate with the ACI fabric: Understanding the ACI Fabric.

To enable inter-VRF communication, the following configurations are necessary:

Set the subnet scope to Shared Between VRFs: This allows the subnets to be shared across different VRFs within the same tenant or across tenants, enabling communication between EPGs that are in different VRFs1.

Export the contract and import as a contract interface: By exporting a contract from the provider tenant and importing it as a contract interface in the consumer tenant, you establish a relationship that allows for controlled communication between EPGs in separate VRFs or tenants1.

References :=

ACI Inter VRF/Tenant Route Leaking Configuration Example1

To modify the event to be displayed as a warning in the future, you need to navigate to the ACI Fault tab and change the severity level of the fault. This involves selecting the monitoring objectthat corresponds to the class of the Managed Object (MO) that generated the fault, then choosing the fault code you want to modify and setting an initial severity value1.

References :=

Cisco APIC Faults, Events, and System Messages Management Guide2

How ACI Faults Are Generated and How to Selectively Prevent … - Cisco1