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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.
BGP is supported in Dell Networking OS version 8.3.19.0 for the S4820T platform
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
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.
NOTE: Dell Networking OS supports 2-byte (16-bit) and 4-byte (32-bit) format for autonomous
system numbers (ASNs), where the 2-byte format is 1 to 65535 and the 4-byte format is 1 to
4294967295.
NOTE: Dell Networking OS supports dotted format as well as the traditional plain format for AS
numbers. The dot format is displayed when using the
show ip bgp commands. To determine the
comparable dot format for an ASN from a traditional format, use ASN/65536. ASN%65536. For more
information about using the 2– or 4-byte format, refer to the Dell Networking OS Configuration
Guide.
Border Gateway Protocol
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