BGP AS_SET and AS_CONFED_SET Deprecated

When implementing BGP, AS_SET and AS_CONFED_SET are segment types used for specific purposes.

  • The AS_SET contains unordered set of ASes that the aggregate route encompasses.
  • The AS_CONFED_SET contains an unordered set of sub-ASes in the AS_PATH

Both of these, according to the most recent RFC, are considered to be deprecated in the future.

https://datatracker.ietf.org/doc/draft-ietf-idr-deprecate-as-set-confed-set/