300-620 DCACI: Implementing Cisco Application Centric Infrastructure

Cisco APIC requires the applicable OOB management contract to permit SNMP traffic. SNMP trap receivers listen on UDP port 162; therefore, an existing OOB contract must include a UDP/162 filter entry to allow APIC trap delivery.

An SNMP Monitoring Destination Group can contain multiple SNMP trap receivers, providing redundant notification destinations. An SNMP source associates that destination group with the monitoring policy so that SNMP trap notifications are generated and sent when monitored events occur. Community and client-group policies instead control SNMP monitoring access and do not by themselves configure trap notification delivery.

In Cisco ACI hardware-proxy mode, Layer 2 unknown-unicast frames are sent to the spine-proxy anycast VTEP instead of being flooded. The spine proxy drops a frame when it cannot locate the destination MAC address in its proxy database.

Cisco ACI pre-provision resolution immediacy downloads VMM policies to the applicable leaf switches regardless of CDP/LLDP neighborship, including before a hypervisor host connects to the VMM switch.

Cisco ACI uses the physical pod’s external TEP pool to allocate routable addresses for communication with remote locations. Cisco specifies that this pool must be a subnet routable across the network connecting the physical pod and remote leaf location.