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Dell EMC Configuration Guide for the S4048T–ON System 9.14.2.4

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Configuring AS4 Number Representations

Enable one type of AS number representation: ASPLAIN, ASDOT+, or ASDOT.

Term
Description
ASPLAIN

Default method for AS number representation. With the ASPLAIN notation, a 32–bit binary AS number is translated into a decimal value.

ASDOT+
A 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>.
ASDOT
A 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 using the decimal method (asdot+). For example, the AS number 65526 appears as 65526 and the AS number 65546 appears as 1.10.
NOTE The ASDOT and ASDOT+ representations are supported only with the 4-Byte AS numbers feature. If you do not implement 4-Byte AS numbers, only ASPLAIN representation is supported.

Only one form of AS number representation is supported at a time. You cannot combine the types of representations within an AS.

To configure AS4 number representations, use the following commands.

  • Enable ASPLAIN AS Number representation.
    CONFIG-ROUTER-BGP mode
    bgp asnotation asplain
    NOTE ASPLAIN is the default method Dell EMC Networking OS uses and does not appear in the configuration display.
  • Enable ASDOT AS Number representation.
    CONFIG-ROUTER-BGP mode
    bgp asnotation asdot
  • Enable ASDOT+ AS Number representation.
    CONFIG-ROUTER-BGP mode
    bgp asnotation asdot+

Examples of the bgp asnotation Commands

The following example shows the bgp asnotation asplain command output.

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 remote-as 18508
  neighbor 172.30.1.250 local-as 65057
  neighbor 172.30.1.250 route-map rmap1 in
  neighbor 172.30.1.250 password 7 5ab3eb9a15ed02ff4f0dfd4500d6017873cfd9a267c04957
  neighbor 172.30.1.250 no shutdown
5332332 9911991 65057 18508 12182 7018 46164 i

The following example shows the bgp asnotation asdot command output.

DellEMC(conf-router_bgp)#bgp asnotation asdot
DellEMC(conf-router_bgp)#sho conf
!
router bgp 100
  bgp asnotation asdot
bgp four-octet-as-support
  neighbor 172.30.1.250 remote-as 18508
  neighbor 172.30.1.250 local-as 65057
  neighbor 172.30.1.250 route-map rmap1 in
  neighbor 172.30.1.250 password 7 5ab3eb9a15ed02ff4f0dfd4500d6017873cfd9a267c04957
  neighbor 172.30.1.250 no shutdown
5332332 9911991 65057 18508 12182 7018 46164 i

The following example shows the bgp asnotation asdot+ command output.

DellEMC(conf-router_bgp)#bgp asnotation asdot+
DellEMC(conf-router_bgp)#sho conf
!
router bgp 100
  bgp asnotation asdot+
bgp four-octet-as-support
  neighbor 172.30.1.250 remote-as 18508
  neighbor 172.30.1.250 local-as 65057
  neighbor 172.30.1.250 route-map rmap1 in
  neighbor 172.30.1.250 password 7 5ab3eb9a15ed02ff4f0dfd4500d6017873cfd9a267c04957
  neighbor 172.30.1.250 no shutdown
5332332 9911991 65057 18508 12182 7018 46164 i

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