Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 526)

NOTE
The implementation of BGP4+ supports the advertising of routes among different address families.
However, it supports BGP4+ unicast routes only; it does not currently support BGP4+ multicast routes.
Address family configuration level
The implementation of BGP4+ includes a new configuration level: address family. For IPv6, Brocade
devices currently support the BGP4+ unicast address family configuration levels. The device enters
the BGP4+ unicast address family configuration level when you enter the following command while at
the global BGP configuration level:
device(config-bgp)# address-family ipv6 unicast
device(config-bgp-ipv6u)#
The (config-bgp-ipv6u)# prompt indicates that you are at the BGP4+ unicast address family
configuration level.
While at the BGP4+ unicast address family configuration level, you can access several commands that
allow you to configure BGP4+ unicast routes. The commands that you enter at this level apply only to
IPv6 unicast address family only. You can generate a configuration for BGP4+ unicast routes that is
separate and distinct from configurations for IPv4 unicast routes.
NOTE
The commands that you can access while at the IPv6 unicast address family configuration level are
also available at the IPv4 unicast address family configuration levels. Where relevant, this section
discusses and provides IPv6-unicast-specific examples. You must first configure IPv6 unicast-routing
in order for any IPv6 routing protocol to be active.
NOTE
Each address family configuration level allows you to access commands that apply to that particular
address family only. To enable a feature in a particular address family, you must specify any
associated commands for that feature in that particular address family. You cannot expect the feature,
which you may have configured in the BGP4 unicast address family, to work in the BGP4+ unicast
address family unless it is explicitly configured in the BGP4+ unicast address family.
To exit from the IPv6 unicast address family configuration level, enter the following command:
device(config-bgp-ipv6u)# exit-address-family
device(config-bgp)#
Entering this command returns you to the global BGP configuration level.
Configuring BGP4+
Before enabling BGP4+ on a device, you must enable the forwarding of IPv6 traffic on the device
using the ipv6 unicast-routing command and enable IPv6 on at least one interface by configuring an
IPv6 address or explicitly enabling IPv6 on that interface.
Address family configuration level
526 FastIron Ethernet Switch Layer 3 Routing Configuration Guide
53-1003087-04