Users Guide

Border Gateway Protocol
BGP is an external gateway protocol that transmits interdomain routing information within and between autonomous systems
(AS). BGP version 4 (BGPv4) supports classless inter-domain routing (CIDR) and the aggregation of routes and AS paths.
Basically, two routers (called neighbors or peers) exchange information including full routing tables and periodically sent
messages to update those routing tables. IPv6 border gateway protocol (IPv6 BGP) is an extension of the external gateway
protocol that transmits interdomain routing information with extended IP address space within and between autonomous
systems (AS).
NOTE: For more information about configuring the border gateway protocol (BGP), refer to the BGP chapter in the Dell
Networking OS Configuration Guide.
This chapter contains the following sections:
● BGPv4 Commands
● MBGP Commands
● BGP Extended Communities (RFC 4360)
● IPv6 BGP Commands
Topics:
• BGP IPv4 Commands
• MBGP Commands
• BGP Extended Communities (RFC 4360)
• IPv6 BGP Commands
• IPv6 MBGP Commands
BGP IPv4 Commands
Border Gateway Protocol (BGP) is an external gateway protocol that transmits interdomain routing information within and
between Autonomous Systems (AS). BGP supports classless interdomain routing (CIDR) and the aggregation of routes and AS
paths. Basically, two routers (called neighbors or peers) exchange information including full routing tables and periodically send
messages to update those routing tables.
address-family
Enable the IPv4 multicast or the IPv6 address family.
C9000 Series
Syntax
address-family {ipv4 [vrf vrf-name | multicast vrf vrf-name]| ipv6 unicast
[vrf vrf-name]}
Parameters
ipv4 multicast Enter the keyword ipv4 followed by the keyword multicast to enable BGPv4
multicast mode.
Defaults Not configured.
Command Modes ROUTER BGP
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
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Border Gateway Protocol 313