Using AS-SET to build filters
Recently, in order to establish BGP Peers with some friends who are new to the field, I also taught them how to use AS-SET for filtering. What is AS-SET AS-SET is an object that can add ASN and AS-SET. Usually used to filter routes exchanged through the BGP protocol. (such as BGP Peer Neighbor, Internet Exchange Route Server, etc.) We usually query all Route Objects in this AS-SET through Whois and recursion....