We later introduced VPC and VSS, allowing all link forwarding in a non-looped topology. These DCI requirements were not fully addressed by current L2VPN technologies.
Layer-2 MAC and Layer-3 IP information distribution is, carried out by BGP. Subsequent releases, like the long lived NX-OS 7.0(3)I7-train or the most recent NX-OS 9.2(3), enhanced the feature-set unique to Cisco. VXLAN termination is done on Leaf ToRs, and not on the Spine.
From a Cisco perspective, the most exciting test scenario was the seamless integration of Cisco’s Any-IRB (Any Integrated Route and Bridge) mode. Running Layer 3 virtual networks on top of Layer 2 physical networks (being called ‘overlays’) brings modern technology to existing infrastructure. The layer 3 routing function is centralized on specific switches (spine switches or border leaf switches). Authored by Faraz Taifehesmatian: Technical Marketing Engineer, Cisco. Enter your email address to subscribe to this blog and receive notifications of new posts by email. So even if data leaves one network and goes to another, the tunnel makes it look like it’s happening in one place. That’s why EVPN has emerged as a standard for traffic between domains, bridging the campus, branch, cloud, and data center. All the hard work is done with BGP. MPLS + SDN + NFV World Congress Public Multi-Vendor Interoperability Test 2019, Interoperability Showcase 2019 – Whitepaper, VXLAN EVPN – De-Facto Standard, Open and Interoperable. VXLAN allows us to cross a layer 3 boundary and build an overlay over a layer 3 network.
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