Reference Guide
8
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 FTOS version 9.0.0.0 for the Z9000 platform .
NOTE: For more information about configuring the border gateway protocol (BGP), refer to the BGP chapter in the
FTOS Configuration Guide
.
This chapter contains the following sections:
• BGPv4 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.
NOTE: FTOS Version 7.7.1 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: FTOS Version 8.3.1.0 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
FTOS Configuration Guide
.
address-family
Enable the IPv4 multicast or the IPv6 address family.
Z9000
Syntax
address-family [ipv4 multicast| ipv6unicast]
Parameters
ipv4 multicast Enter BGPv4 multicast mode.
ipv6 unicast Enter BGPv6 mode.
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