Adjacency sharing is a feature which deduplicates FEC to avoid installing identical FECs in hardware. Often this applies to Equal Cost Multi Path (ECMP) FECs, which are generally a much more scarce resource. Hierarchical FECs are not supported with adjacency sharing.

TOI EOS 4.35.2F Adjacency Sharing Host Route Scaling Selective Adjacency Sharing

Arista VESPA or Arista Virtual Ethernet Segment with Proxy ARP and associated features offer a campus solution for wireless deployment. Please note that all references to the keyword VESPA in this document refer to Arista VESPA.