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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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AS4 Number Representation

The Dell Networking OS version 8.2.1.0 supports multiple representations of 4-byte AS numbers: asplain, asdot+, and asdot.

  • NOTE: The ASDOT and ASDOT+ representations are supported only with the 4-Byte AS numbers feature. If 4-Byte AS numbers are not implemented, only ASPLAIN representation is supported.
ASPLAIN is the method the Dell Networking OS has used for all previous Dell Networking OS versions. ASPLAIN remains the default method with the Dell Networking OS version 8.2.1.0 and later. With the ASPLAIN notation, a 32-bit binary AS number is translated into a decimal value.
  • All AS numbers between 0 and 65535 are represented as a decimal number when entered in the CLI and when displayed in the show commands output.
  • AS numbers larger than 65535 are represented using ASPLAIN notation. When entered in the CLI and when displayed in the show commands output, 65546 is represented as 65546.
ASDOT+ representation splits the full binary 4-byte AS number into two words of 16 bits separated by a decimal point (.): <high-order 16 bit value>.<low-order 16 bit value>. Some examples are shown in the following table.
  • All AS numbers between 0 and 65535 are represented as a decimal number, when entered in the CLI and when displayed in the show commands outputs.
  • AS Numbers larger than 65535 is represented using ASDOT notation as <higher 2 bytes in decimal>.<lower 2 bytes in decimal>. For example: AS 65546 is represented as 1.10.

ASDOT representation combines the ASPLAIN and ASDOT+ representations. AS numbers less than 65536 appear in integer format (asplain); AS numbers equal to or greater than 65536 appear in the decimal format (asdot+). For example, the AS number 65526 appears as 65526 and the AS number 65546 appears as 1.10.

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