Exam 300-620 topic 1 question 151 discussion

https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-739609.html

From the link: As shown in Figure 60, the EVPN-RID, O-UTEP, and O-MTEP addresses are the only prefixes that must be exchanged across sites to enable the intersite EVPN control plane and the VXLAN data plane. Consequently, they are the only prefixes that should be learned in the ISN routing domain. This implies that those IP addresses must be globally routable across the ISN, which should normally not be a problem, because they are independent of the original TEP pools associated to each fabric and assigned separately on Cisco Nexus Dashboard Orchestrator at the time of Multi-Site deployment.

Four types of TEP addresses need to be configured: Multi-Pod data-plane TEP: Configure this address directly on each APIC cluster in Cisco ACI Release 3.0(1). This configuration is mandatory even if Multi-Pod fabrics are not initially supported in a Cisco ACI Multi-Site architecture for all ACI software releases antecedent to Release 3.2(1). This configuration is not required anymore from Cisco ACI Release 3.2(1) when connecting single pod fabrics to a Multi-Site domain. Overlay Multicast TEP (O-MTEP): This address is used as the destination IP address for BUM traffic sent across the fabric in ingress replication mode. Overlay Unicast TEP (O-UTEP): This address is used as the anycast VTEP address for each pod. Configure one address per pod for a Multi-Pod fabric. This address is used as the next-hop on the local spine node to reach remote endpoints. MP-BGP EVPN Router-ID (EVPN-RID): This address is used to form MP-BGP intersite sessions. Define one unique IP address per spine node.