41 – Interconnecting Traditional DCs with DCNM using VXLAN EVPN Multi-site
Good day,
The same question arises often about how to leverage DCNM to deploy a VXLAN EVPN Multi-site between traditional Data Centers. To clarify, DCNM can definitively help interconnecting two or multiple Classical Ethernet-based DC networks, in a short time.
As a reminder (post 37) , VXLAN EVPN Multi-site overlay is initiated from the Border Gateway nodes (BGW). The BGW function can run in two different modes; either in Anycast BGW mode (Up to 6 BGW devices per site), traditionally deployed to interconnect VXLAN EVPN based fabrics, or in vPC BGW mode (up to 2 BGW per site), essentially designed to interconnect traditional data centers, but not limited to. vPC BGW can be leveraged to interconnect multiple VXLAN EVPN fabrics from which Endpoints can be locally dual- attached at layer 2. Several designations are used to describe the Classic Ethernet-based data center networks such as Traditional or legacy data center network. All these terms mean that these network are non VXLAN EVPN-based fabrics. The vPC BGW node is agnostic about data center network types, models or switches that construct the data center infrastructure, as long as it offers Layer 2 (dot1Q) connectivity for layer 2 extension, and if Continue reading


