What do you understand about communities in the context of BGP?

1.	What do you understand about communities in the context of BGP?
Answer» A BGP community is a transitive, optional BGP property that is RECOGNISED and SENT between BGP peers. A BGP community is a tag that is appended to the BGP routes that are exchanged between two BGP peers. A community is a 32-bit number that is divided into two 16-bit sections. The first 16 bits indicate the community's AS number, while the FOLLOWING 16 bits represent a unique number assigned by the AS. Because each AS number is distinct, each community on the INTERNET is SIMILARLY distinct. This means that an AS with the ASN 9999 (or 0x270F in hex) can have communities ranging from 0x270F0000 to 0x270FFFFF.

Discussion