Dci Auto-Configuration Scenario - Cisco Nexus 7000 Series Configuration Manual

Configuring ACI WAN Interconnect

DCI Auto-Configuration Scenario

Figure 21: DCI Auto-Configuration
DCI could have the following scenarios:
• Underlay L3 connectivity to the spine via an Inter-POD-Network router in a multi-POD topology
• Directly connected to the spine
Spine — IPN Router — DCI (multi-pod topology)
DCI would be part of an external subnet that is reachable via an inter-pod network/router and not part of the
infra subnet (that is administered via APIC). External subnets are administered outside of APIC and would
have the IP addresses administered manually.
Spine — DCI (DCI directly connected to multiple spines)
A separate subnet is allocated for all DCIs to be on, and this subnet is not administered via APIC/DHCP. DCI
and spine interface IP addresses on this subnet are administered manually.
Essentially, in both topologies, DCI underlay interface that carries OpFlex/ BGP control plane/VXLAN data
plane traffic is assumed to be not on the infra subnet that requires IP address to be obtained via DHCP. L3
reachability to ACI VTEPs, BGP peers, and OpFlex proxy on the ACI infra subnet is through the underlay
routing to/from this external DCI subnet.
The following sections describe the OpFlex configuration steps.
Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide
DCI Auto-Configuration Scenario
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