Administrator Guide

Figure 21. BGP Routers in Full Mesh
The number of BGP speakers each BGP peer must maintain increases exponentially. Network management quickly becomes
impossible.
AS4 Number Representation
Dell EMC Networking OS 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 default method the system uses. 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.
Border Gateway Protocol (BGP)
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