This video provides a comprehensive walkthrough of setting up and verifying a VXLAN fabric using Cisco Nexus 9000v switches and a CSR 1000v router. The tutorial covers configuring the underlay, overlay, L2/L3 VNIs, multi-tenant VRFs, route leaking, and external fabric access. The goal is to demonstrate the practical configuration steps and verification methods for building a robust and scalable VXLAN network.
Underlay Setup: The video details the configuration of the underlay network, including OSPF for routing and multicast configuration using PIM. Loopback interfaces are used for BGP peering and VAP configuration, simplifying addressing.
Overlay Setup: BGP EVPN is used for the overlay, with the configuration steps for spines and leaves shown. Root reflectors are employed for efficient routing. NVE interfaces (VAPs) are configured on the leaf switches for VXLAN encapsulation/decapsulation.
L2/L3 VNI Configuration: The video explains efficient L2 VNI configuration, focusing on only including VNIs needed on each leaf. The setup includes ARP suppression for optimization. The configuration of L3 VNIs is shown, demonstrating the transition from asymmetric to symmetric IRB.
Multi-tenancy and Route Leaking: Multi-tenancy is achieved by creating separate L3 VNIs and VRFs for different tenants (VLANs 10 and 20). Route leaking between VRFs using N9K5 as a border leaf is demonstrated, enabling inter-tenant communication where desired.
External Fabric Access: The video illustrates configuring external connectivity through a CSR 1000v router, showcasing shared external access between tenants and verification of connectivity. IP prefix lists and route maps are used to optimize external routing.
The transcript doesn't provide a single, complete, consolidated block of configuration commands for the underlay. The underlay configuration is described and shown in parts across several timestamps. To reconstruct the full configuration, you would need to collect the commands shown and described at the following approximate time markers (exact commands may vary slightly due to editing):
To obtain the precise commands, you will need to review the transcript sections at these timestamps. Note that some commands are shown visually, and others are only described verbally; therefore, precise replication requires careful observation of the video at those points. I can help you extract specific sections if you provide the timestamps, but I cannot completely reconstruct the configuration without accessing the visual elements of the video.
