Lesson 1: How to Configure Transit Routing
- A Virtual Routing and Forwarding (VRF) object or context is a tenant network (called a private network in the APIC GUI). A tenant can have multiple VRFs. A VRF is a unique Layer 3 forwarding and application policy domain.
- ACI supports multiple Layer 3 outs. These Layer 3 outs can exchange routes between each other, through the ACI fabric.
- Bi-directional redistribution allows ACI to provide full IP connectivity between separate routing domains.
- Helps with mainframes connected to the fabric, Service Devices (Layer 4 - Layer 7), and different routed domains such as WAN, VPNs, Campus, etc.
- ACI Transit Routing allows two Layer 3 outs tied to a single VRF to exchange and advertise routes between them
- ACI acts as an MP-BGP domain between the two peering routing domains