BGP support for deterministic path forwarding (DPF) in a CLOS network

BGP DPF partitions a physical fabric into multiple logical fabrics for distinct flows. Single hop External BGP (EBGP) might not meet all DC flow requirements, especially for drop and latency sensitive AI ML flows. BGP DPF colors the single-hop EBGP session on each link with a fabric color. If a link belongs to the red fabric, the EBGP session over the link is colored red. A route with no color community is advertised over any colored or uncolored EBGP sessions.

To configure fabric colors for BGP neighbors include the fabric-color com-name statement at the [edit protocols bgp] hierarchy level. You can also configure this feature at the BGP group or neighbor level.

To advertise colored IPv4 or IPv6 routes, include the fabric-advertise statement at the [edit protocols bgp] hirearchy level.