EVPN/VXLAN overlay load balancing across multiple remote VTEPs for multihomed Type-2 routes requires VPLAG support.

This capability was introduced through RLI57563. Prior to this enhancement, ECMP load balancing over multiple VTEPs for multihomed hosts is not supported.

• Traffic does not load balance across multiple remote VTEPs for multihomed EVPN Type-2 routes.
• Only a single VTEP may be used for forwarding even when multiple remote VTEPs are available.
• Verification may show multiple remote VTEPs learned, but overlay load balancing is not active on unsupported releases.
• The issue is typically observed on releases prior to 24.4R1/24.4R2 where VPLAG support is unavailable.

Starting from release 24.4R1, EVPN/VXLAN overlay load balancing (VPLAG) support was introduced through RLI57563. The enhancement is available from later releases and cannot be backported to earlier versions.

Type-5 routes do not require VPLAG for VTEP load balancing and are not impacted by this limitation.

root@switch> show ethernet-switching vxlan-tunnel-end-point svlbnh  

SVLBNH: 100XX    RVTEP count: XX     ESI count: XX   

  RVTEP-IP       RVTEP-IFL      VENH  

  10.61.XXX.XX     vtep.32XX1      100XX  

  10.61.XXX.XX     vtep.32XX0      100XX