Overview of EVPN-VXLAN Fabric With CRB
About This Network Configuration Example
Use this NCE to deploy a single campus fabric with a Layer 3 IP-based underlay network that uses EVPN as the control plane protocol and VXLAN as the data plane protocol in the overlay network. In this example you deploy a Centrally-routed bridging (CRB) architecture. See EVPN-VXLAN Campus Architectures for details on supported EVPN-VXLAN campus architectures. Refer to Technology Primer: EVPN-VXLAN Fabrics for the Campus for background information on EVPN-VXLAN technology benefits for a campus network.
Campus EVPN-VXLAN Fabric High Level Architecture: CRB
At a high level, an EVPN-VXLAN fabric architecture for campus network deployments consists of the following:
Core switches that can be configured as Layer 2/Layer 3 VXLAN gateways.
A centrally-routed bridging (CRB) overlay where the Integrated Routing and Bridging (IRB) interfaces for the virtual networks are located on the core switches.
Distribution switches that can be configured as Layer 2 VXLAN gateways.
Access layer switches that are either standalone switches or a Virtual Chassis. These switches can be Juniper or third-party devices.
VLANs that carry endpoint traffic from the wired and wireless devices that connect to the access layer switches and the distribution layer switches.
Figure 1 provides a high-level overview of the CRB based EVPN-VXLAN fabric architecture for wired and wireless integration.