Install Guide

1 neighbor(s) using 40960 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
20.20.20.1 200 0 0 0 0 0 00:00:00 0
Changing a BGP router ID
BGP uses the configured router ID to identify the devices in the network.
By default, the router ID is the highest IP address of the Loopback interface. If no Loopback interfaces are configured, the
highest IP address of a physical interface on the router is used as the BGP router ID. To change the default BGP router ID, use
the following command.
● Change the BGP router ID of a BGP router
ROUTER BGP mode
bgp router-id ip-address
ip-address- IP address in dotted decimal format.
NOTE: Do not specify an IP address which is used by another device as a router ID.
Peering sessions are reset when you change the router ID of a BGP router. Upon changing the router ID, the system
automatically restarts the BGP instance for the configuration to take effect.
DellEMC# configure terminal
DellEMC(conf)# router bgp 400
DellEMC(conf-router_bgp)# bgp router-id 1.1.1.1
Following is the sample output of show ip bgp ipv4 multicast summary command.
DellEMC# show ip bgp summary
BGP router identifier 1.1.1.1, local AS number 400
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
1 neighbor(s) using 8192 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
20.20.20.1 200 0 0 0 0 0 00:00:00 0
DellEMC#
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
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Border Gateway Protocol (BGP)