EVPN/VXLAN Vs. TradCore

Why It Matters

The decision drives scalability, security posture, operational cost and vendor risk: picking EVPN/VXLAN can enable cloud-like mobility and fine-grained policy at scale, while trad core can minimize complexity and cost for smaller or less dynamic environments.

Summary

The hosts and guest compare traditional core ("trad core") three-tier designs—SVIs, VLANs and spanning tree—with EVPN/VXLAN overlays for data centers and campuses. Trad core remains simple, familiar and effective for many networks, while EVPN/VXLAN offers massive segment scaling, workload mobility, and stronger identity-based policy but adds protocol complexity, operational overhead and interoperability challenges. Practical limits persist—VXLAN’s large VNI space still typically maps to a 4,000-VLAN reality—and multi-vendor EVPN deployments can be problematic without mature automation and skill. The panel concludes both architectures are valid; the right choice depends on scale, operational capability, and business requirements.

Original Description

Drew and Ethan sit down with Tony Bourke to determine whether TradCore or EVPN VXLAN is right for your network. Tony is a seasoned instructor in automation, network design, and more. They explore the key factors for choosing a design, including scale and redundancy, operational complexity, and workload mobility.

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Links:

Tony Bourke on LinkedIn - https://www.linkedin.com/in/tony-bourke-a3232b1/

HN 809: EVPN All the Things - Packet Pushers - https://packetpushers.net/podcasts/heavy-networking/hn809-evpn-all-the-things/

TonyB YouTube Channel - https://www.youtube.com/@shadeland

Intro to EVPN with Tony Bourke - Packet Pushers YouTube - https://www.youtube.com/watch?v=pgKJ0MbrmLo&list=PLtO_OYBiEo6l0z5cQ1eaiFC6QAnFeVRcf

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