BigIron RX Series Configuration Guide 1131
53-1002253-01
Configuring BGP4+
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Enabling BGP4+
To enable BGP4+, enter commands such as the following.
BigIron RX(config)# router bgp
BGP: Please configure 'local-as' parameter in order to run BGP4.
BigIron RX(config-bgp)# local-as 1000
These commands enables the BGP4+ switch and configure the autonomous system (1000) in
which your switch resides.
Syntax: [no] router bgp
To disable BGP, enter the no form of this command.
Syntax: local-as <number>
Specify the AS number in which the switch you are configuring resides.
After enabling BGP4+, you can add neighbors to a BGP4+ switch by entering a commands such as
the following.
BigIron RX(config-bgp)# address-family ipv6 unicast
BigIron RX(config-bgp-ipv6u)# neighbor 2001:4383:e0ff:783a::4 remote-as 1001
BigIron RX(config-bgp-ipv6u)# neighbor 2001:4383:e0ff:783a::5 remote-as 1001
These commands add two neighbors with global IPv6 addresses 2001:4383:e0ff:783a::4 and
2001:4383:e0ff:783a::5 in AS 1001.
The example above adds IPv6 neighbors at the BGP4+ unicast address family configuration level.
These neighbors, by default, are enabled to exchange BGP4+ unicast prefixes. However, if you add
IPv6 neighbors while at the global BGP configuration or IPv4 BGP unicast address family
configuration level, the neighbors will not exchange BGP4+ unicast prefixes until you explicitly
enable them to do so by entering the neighbor <ipv6-address> | <peer-group-name> activate
command at the BGP4+ unicast address family configuration level.
This section provides minimal information about adding BGP4+ neighbors, because its focus is to
provide information about configuring BGP4+. For more information about the parameters you can
use with this command, refer to the Router Configuration Guide.
Configuring BGP4+ neighbors using global or site-local
IPv6 addresses
To configure BGP4+ neighbors using global or site-local IPv6 addresses, you must add the IPv6
address of a neighbor in a remote AS to the BGP4+ neighbor table of the local switch. You must
repeat this procedure for each neighbor that you want to add to a local switch.
For example, to add the IPv6 address 2011:f3e9:93e8:cc00::1 of a neighbor in remote AS 4500 to
the BGP4+ neighbor table of a switch, enter the following commands.
BigIron RX(config-bgp)# address-family ipv6 unicast
BigIron RX(config-bgp-ipv6u)# neighbor 2011:f3e9:93e8:cc00::1 remote-as 4500
Syntax: neighbor <ipv6-address> remote-as <as-number>
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