EVPN Designs: Multi-Pod with IP-Only WAN Routers
The multi-pod EVPN design merges two EVPN fabrics into one, utilizing OSPF, IBGP, and EBGP sessions, with a shift towards simpler WAN edge routers supporting only IP forwarding.
MAIN POINTS
- Merges two EVPN fabrics into a single end-to-end fabric.
- Utilizes OSPF and IBGP with core devices as route reflectors.
- EBGP sessions exist between WAN edge routers.
- BGP sessions carry both IPv4 and EVPN routes.
TAKEAWAYS
- Simplification of WAN edge routers to support only IP forwarding.
- EVPN routes must be supported by WAN edge routers in the control plane.
- Design change aims to streamline the network architecture.
- Emphasis on maintaining efficient route management across fabrics.