Sure Pass Exam 300-620 PDF

For AAA configuration within the Cisco ACI fabric, where authentication should fall back to local users if the TACACS+ server is unreachable, and access must be granted through the fallback domain if the Cisco APIC is out of the cluster, the configuration set that meets these requirements is to have the Default Authentication Realm set to TACACS+ with Fallback Check enabled. This ensures that when the TACACS+ server cannot be reached, the system will fall back to using local authentication

To set Layer 2 loop migration in an ACI Fabric with a Layer 2 Out configured, MCP (Misconfiguration Protocol) must be enabled on the ACI fabric56. MCP helps to prevent Layer 2 loops by detecting misconfigurations that could potentially cause loops56.

In Cisco ACI, a leaf switch learns a source IP or MAC as a remote endpoint when VXLAN traffic arrives on a leaf fabric port from the spine, and the inner source IP is within the range of the bridge domain subnets associated with the leaf. This process is part of the ACI’s COOP (Council Of Oracles Protocol), which ensures that endpoint information is accurately disseminated across the fabric for efficient traffic forwarding.