Users Guide

• show ip bgp paths extcommunity
• show ip extcommunity-list
• show running-config extcommunity-list
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.
address-family
Enable the IPv4 multicast or the IPv6 address family.
S5000
Syntax
address-family [ipv4 {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.
ipv4 vrf vrf-name Enter the keyword ipv4 followed by the keyword vrf and then the name of the
VRF to enable VRF mode.
NOTE: Use this attribute to start a BGP instance corresponding to either a
specific address family in a default VRF or an IPv4 address family in a non-
default VRF.
ipv6 unicast Enter the keyword ipv6 followed by the keyword unicast to enable BGPv6
mode.
vrf vrf-name (Optional) Enter the keyword vrf followed by the name of the VRF to install the
IPv6 route in that VRF.
NOTE: It will not be possible to enable VRF mode for IPv6 unicast without
configuring the corresponding IPv4 unicast mode for the same VRF. While
deletion, whenever the IPv4 VRF mode is deleted for the VRF, it will
automatically delete the IPv6 VRF configurations as well.
Defaults Not configured.
Command Modes ROUTER BGP
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
Border Gateway Protocol 317