Network Resilience

EVPN Multihoming and MC-LAG Hybrid Deployment Support

The Ethernet VPN–Virtual Extensible LAN (EVPN-VXLAN) network type supported on CLOS fabric devices provides the following capabilities:

1. EVPN Multihoming (EVPN MH) & MC-LAG Coexistence: Enables smooth migration from traditional Multi-chassis Link Aggregation (MC-LAG) to standards-based EVPN multihoming.

2. Ensures redundancy through MC-LAG and dual-homing of hosts to Routers (VTEPs).

3. Equal Cost Multi-Path (ECMP) support from Router (VTEP) to Router (VTEP), enhancing path diversity.

4. Ensures seamless integration into customer environments, existing MC-LAG nodes are treated as single-homed nodes within EVPN, facilitating redundancy and smooth interoperability transition between the two network types.

This capability enables a hybrid deployment model, allowing data centers to protect existing MC-LAG investments while incrementally adopting EVPN multihoming. The approach ensures operational continuity, redundancy, and simplified migration.

CLI Enhancements

To support this feature, the following commands are introduced:

1.

show evpn esi — Display multihomed segments and their corresponding attached VTEPs

2.

show nvo vxlan vni-tunnel — Display VPN endpoints

3.

nvo vxlan vtep-info — Configures the VTEP in vtep-info config mode

For more details, refer to the VxLAN Command Reference section in OcNOS Virtual Extensible LAN Guide, Release 7.0.0.