Brocade Communications Systems FastIron SX 1600, Configuration Manual, Page: 367 / 593

NOTE
If you configure the Brocade device to use a loopback interface to communicate with a BGP4 neighbor, the peer IP address on
the remote device pointing to your loopback address must be configured.
To add a loopback interface, enter commands such as the following.
device(config-bgp)# exit
device(config)# int loopback 1
device(config-lbif-1)# ip address 10.0.0.1/24
Syntax: [no] interface loopback num
The num value can be from 1 through the maximum number of loopback interfaces supported on the device.
Adding BGP4 neighbors
Because BGP4 does not contain a peer discovery process, for each BGP4 neighbor (peer), you must indicate the IP address and the AS
number of each neighbor. Neighbors that are in different autonomous systems communicate using EBGP. Neighbors within the same
AS communicate using IBGP.
NOTE
If the device has multiple neighbors with similar attributes, you can simplify configuration by configuring a peer group, then
adding individual neighbors to it. The configuration steps are similar, except you specify a peer group name instead of a
neighbor IP address when configuring the neighbor parameters, then add individual neighbors to the peer group.
NOTE
The device attempts to establish a BGP4 session with a neighbor as soon as you enter a command specifying the IP address
of the neighbor. If you want to completely configure the neighbor parameters before the device establishes a session with the
neighbor, you can administratively shut down the neighbor.
To add a BGP4 neighbor with an IP address 10.157.22.26, enter the following command.
device(config-bgp-router)# neighbor 10.157.22.26 remote-as 100
The neighbor ip-addr must be a valid IP address.
The neighbor command has additional parameters, as shown in the following syntax:
Syntax: no neighbor { ip-addr | peer-group-name } {[ activate ] [ advertisement-interval seconds [ allowas-in num ] [ capability as4 [ enable |
disable ]] [ capability orf prefixlist [ send | receive ]] [ default-originate [ route-map map-name ]] [ description string ] [ distribute-list in | out
num,num,... | ACL-num localin | out ] [ ebgp-btsh ] [ ebgp-multihop [ num ]] [ enforce-first-as ] [ filter-list access-list-name [ in | out ]] [ local-
as as-num [ no-prepend ]] [ maxas-limit in [ num | disable ] [ maximum-prefix num [ threshold ] [ teardown ] [ next-hop-self ] [ password
string ] [ peer-group group-name ] [ prefix-list string in | out ] [ remote-as as-number ] [ remove-private-as ] [ route-map in | out map-
name ] [ route-reflector-client ] [ send-community ] [ shutdown [ generate-rib-out ]] [ soft-reconfiguration inbound ] [ timers keep-alive
num hold-time num ] [ unsuppress-map map-name ] [ update-source ip-addr | ethernet unit / slot / portnum | loopback num | ve num ]
[ weight num ] [ send-label ]}
The ip-addr and peer-group-name parameters indicate whether you are configuring an individual neighbor or a peer group. If you
specify a neighbor IP address, you are configuring that individual neighbor. If you specify a peer group name, you are configuring a peer
group.
activate allows exchange of routes in the current family mode.
advertisement-interval seconds configures an interval in seconds over which the specified neighbor or peer group will hold all route
updates before sending them. At the expiration of the timer, the routes are sent as a batch. The default value for this parameter is zero.
Acceptable values are 0 to 3600 seconds.
Basic configuration tasks required for BGP4
FastIron Ethernet Switch Layer 3 Routing
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