@techreport{malhotra-bess-evpn-centralized-anycast-gw-04,
    number =    {draft-malhotra-bess-evpn-centralized-anycast-gw-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-malhotra-bess-evpn-centralized-anycast-gw/04/},
    author =    {Neeraj Malhotra and Krishnaswamy Ananthamurthy and Ali Sajassi and Lukas Krattiger and Jorge Rabadan},
    title =     {{Centralized Anycast Gateway in Ethernet VPN(EVPN)}},
    pagetotal = 17,
    year =      2025,
    month =     sep,
    day =       23,
    abstract =  {EVPN Integrated Routing and Bridging (IRB) fabrics provide a flexible and extensible method for Layer-2 and Layer-3 overlay network connectivity. {[}EVPN-IRB{]} defines operation for symmetric and asymmetric EVPN IRB using distributed anycast gateway architecture (DAG). In a DAG architecture, both bridging and first-hop routing functions for overlay subnets are located on leaf PEs, with first-hop routing provided by a distributed anycast gateway provisioned across the leaf PEs. This document describes an architecture and operation for EVPN Centralized Anycast Gateway (CAG), which allows the first- hop routing function for overlay subnets to be centralized on designated IRB GWs while the bridging function is still located on the leaf PEs. The documents also covers trade-offs of deploying a CAG as compared with DAG. It further describes operation for inter- op between CAG and DAG based EVPN-IRB network overlays.},
}