{ } in BGP.as_path

[Vincent Bernat]

 ❦ 25 août 2017 19:27 +0300, Mikhail Mayorov <mm at tagan.ru> :

> Hi all!
>
> What is mean '{}' in as_path?

This is a set. This part is not ordered. With only one AS, this doesn't
make much sense, but it can contain several of them. It usually means the
route is an aggregation of several routes.
-- 
Use the fundamental control flow constructs.
            - The Elements of Programming Style (Kernighan & Plauger)