Cisco 300-630 Online Access

 For the Cisco ACI leaf to learn individual MAC addresses from the same physical port, “MAC pinning” mode must be enabled in the vSwitch policy configuration. This mode allows each ESXi vSwitch port group to pin to a specific uplink or set of uplinks, enabling independent MAC address learning for each pinned uplink, which is essential for distinguishing multiple VMs on an ESXi host by the leaf switch. 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

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