2. Taxonomy of Representation Formats

2. Taxonomy of Representation Formats

A taxonomy of representation for AS numbers is as follows:

asplain

refers to a syntax scheme of representing all AS numbers using decimal integer notation. Using asplain notation, an AS number of value 65526 would be represented as the string "65526" and an AS number of value 65546 would be represented as the string "65546".

asdot+

refers to a syntax scheme of representing all AS numbers using a notation of two integer values joined by a period character: <high order 16-bit value in decimal>.<low order 16-bit value in decimal>. Using asdot+ notation, an AS number of value 65526 would be represented as the string "0.65526" and an AS number of value 65546 would be represented as the string "1.10".

asdot

refers to a syntax scheme of representing AS number values less than 65536 using asplain notation and representing AS number values equal to or greater than 65536 using asdot+ notation. Using asdot notation, an AS number of value 65526 would be represented as the string "65526" and an AS number of value 65546 would be represented as the string "1.10".