CCNP Data Center 300-620 Cisco Study Notes

To configure leaf and spine switches in a Cisco ACI fabric to use out-of-band management for NTP protocol, an Override Policy with NTP Out-of-Band must be created. This policy specifies that NTP traffic should be directed through the out-of-band management network, separate from the in-band management traffic, ensuring dedicated management connectivity for time synchronization.

To advertise the 0.0.0.0/0 prefix out on L3Out-2 OSPF, when it is configured as a default static route on L3Out-1, the action that should be taken is to enable the Export Route Control Subnet. This setting allows the default route to be advertised to other L3Outs, enabling the ACI fabric to act as a transit network1.

References :=

ACI Fabric L3Out White Paper - Cisco1

The purpose of the Overlay Multicast TEP (O-MTEP) in a Cisco ACI Multi-Site deployment is to perform head-end replication for BUM (Broadcast, Unknown unicast, Multicast) traffic. This common anycast address is shared by all the spine nodes in the same site and is used to replicate BUM traffic across the sites4.

The setting that prevents the learning of Endpoint IP addresses whose subnet does not match the bridge domain subnet is the “Limit IP learning to subnet” setting within the bridge domain1. This setting ensures that only IP addresses belonging to the subnets configured on the bridge domain are learned, preventing mis-learning of IP addresses that may not belong to the fabric1.