Enable ECMP for Multiple BGP Autonomous Systems

Perform the following task if you have BGP configured, and you want to enable ECMP over multiple autonomous systems. This task presumes that BGP is already configured. In the following figure, two ECMP paths to a destination go through two firewalls belonging to a single ISP in a single BGP autonomous system.
ecmp_bgp_3AS.png
In the following figure, two ECMP paths to a destination go through two firewalls belonging to two different ISPs in different BGP autonomous systems.
ecmp_bgp_4AS.png
  1. For BGP routing, enable ECMP over multiple autonomous systems.
    1. Select
      Network
      Virtual Routers
      and select the virtual router on which to enable ECMP for multiple BGP autonomous systems.
    2. Select
      BGP
      Advanced
      and select
      ECMP Multiple AS Support
      .
  2. Commit your changes.
    Click
    OK
    and
    Commit
    .

Related Documentation