Overlay load balancing in an EVPN-VXLAN network

You can provision supported switches to function as leaf or spine devices in an EVPN-VXLAN network to support load balancing among different virtual tunnel endpoints (VTEPs). Overlay load balancing is enabled by default. We support overlay load balancing as follows:

• With centrally-routed bridging (CRB) overlays and edge-routed bridging (ERB) overlays
• When a leaf device is multihomed to multiple spine devices
• When a host is multihomed to multiple leaf devices

You configure each multihomed aggregated Ethernet interface, logical interface, or physical interface with an Ethernet segment identifier (ESI). You can use a maximum of 256 ESIs with overlay load balancing.