Setup Guide

Table Of Contents
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.
Dynamic AS Number Notation Application
Dell EMC Networking OS applies the ASN notation type change dynamically to the running-config statements.
When you apply or change an notation, the type selected is reflected immediately in the running-configuration and the show
commands (refer to the following two examples).
Example of Dynamic Changes in the Running Configuration When Using the bgp asnotation Command
ASDOT
DellEMC(conf-router_bgp)#bgp asnotation asdot
DellEMC(conf-router_bgp)#show conf
!
router bgp 100
bgp asnotation asdot
bgp four-octet-as-support
neighbor 172.30.1.250 local-as 65057
<output truncated>
DellEMC(conf-router_bgp)#do show ip bgp
BGP table version is 24901, local router ID is 172.30.1.57
<output truncated>
ASDOT+
DellEMC(conf-router_bgp)#bgp asnotation asdot+
DellEMC(conf-router_bgp)#show conf
!
router bgp 100
bgp asnotation asdot+
bgp four-octet-as-support
neighbor 172.30.1.250 local-as 65057
<output truncated>
DellEMC(conf-router_bgp)#do show ip bgp
BGP table version is 31571, local router ID is 172.30.1.57
<output truncated>
AS-PLAIN
DellEMC(conf-router_bgp)#bgp asnotation asplain
DellEMC(conf-router_bgp)#sho conf
!
router bgp 100
bgp four-octet-as-support
neighbor 172.30.1.250 local-as 65057
<output truncated>
DellEMC(conf-router_bgp)#do sho ip bgp
BGP table version is 34558, local router ID is 172.30.1.57
<output truncated>
Example of the Running Configuration When AS Notation is Disabled
AS NOTATION DISABLED
DellEMC(conf-router_bgp)#no bgp asnotation
DellEMC(conf-router_bgp)#sho conf
!
router bgp 100
bgp four-octet-as-support
neighbor 172.30.1.250 local-as 65057
<output truncated>
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Border Gateway Protocol (BGP)