INTERACTIVE LAB

VXLAN EVPN Multi-Site

Two sites — Nebraska (AS 65001) and North Dakota (AS 65002) — joined by a pair of 10G DCI links between their Border Gateway spines, deployed the way Nexus Dashboard 4.2 builds them with NX-OS 10.6 best practices. Toggle a protocol layer to see where each routing protocol lives and why. Click any device or link for roles, interface details, addressing, and config. Then walk the learning path to watch a server's MAC and IP propagate across both fabrics.

physical / underlay iBGP EVPN (RR) eBGP Multi-Site DCI eBGP external (VRF-lite) vPC peer-link

LAB

Pick a layer, click a device

This fabric is rendered from a topology data model — every node and link you see is clickable. Start with the protocol layers above to see which sessions live where, or click a switch to read its role and the NX-OS 10.6 config that makes it tick.

When you're oriented, hit Walk the learning path below the diagram and watch SRV-A's MAC + IP travel from a Nebraska leaf pair all the way into North Dakota's forwarding tables.

How SRV-A's MAC + IP are learned across the fabric

SRV-A (10.100.0.15 · MAC 0050.56a1.2b34) is dual-homed to the Nebraska vPC leaf pair. Press play to follow its address through local learning, BGP EVPN type-2 advertisement, route reflection, Border Gateway re-origination across the 10G DCI, and installation in North Dakota — ending with SRV-B reaching it without a single flooded frame.

Companion reading: Nexus Dashboard 4.2.1 — what's new, EVPN route types explained, and the live terminal cycling the verification commands for everything on this page. Config snippets follow the NX-OS 10.6(x) VXLAN configuration guide; this is a teaching topology — trim and adapt before production.

How SRV-A's MAC + IP are learned across the fabric

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