Dell S4820T, Configuration Manual

Page: 211 / 1178

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.
Dynamic AS Number Notation Application
Dell Networking OS applies the ASN notation type change dynamically to the running-config statements.
When you apply or change an asnotation, 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
Dell(conf-router_bgp)# bgp asnotation asdot
Dell(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>
Dell(conf-router_bgp)#do show ip bgp
BGP table version is 24901, local router ID is 172.30.1.57
<output truncated>
ASDOT+
Dell(conf-router_bgp)# bgp asnotation asdot+
Dell(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>
Dell(conf-router_bgp)#do show ip bgp
BGP table version is 31571, local router ID is 172.30.1.57
<output truncated>
AS-PLAIN
Dell(conf-router_bgp)# bgp asnotation asplain
Dell(conf-router_bgp)#sho conf
!
router bgp 100
bgp four-octet-as-support
neighbor 172.30.1.250 local-as 65057
<output truncated>
Border Gateway Protocol IPv4 (BGPv4)
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