13.5.8 Configuration of the confederation

This section describes how to configure a confederation using the following figure as a reference.

Figure 13-31: Example confederation

<Structure of this section>

(1) List of configuration commands

The following table lists the commands used to configure confederations.

Table 13-22: List of configuration commands
Command name	Description
bgp confederation identifier	Specifies the AS number when configuring a confederation.# ^#
bgp confederation peers	Specifies the member AS numbers of the ASs connected to the local member AS when configuring a confederation.
neighbor remote-as	Configures a BGP4/BGP4+ peer. Sets the local member AS number when configuring a confederation.

#: Commonly specified for both VRFs and the global network.

Points to note: The example below shows how to specify the local member AS number by using the router bgp command. Then, set the member AS numbers of the other ASs connected to each AS by using the bgp confederation peers command in config-router mode.

Command examples

(config)# router bgp 64512

Specifies the local member AS number (64512).
(config-router)# bgp router-id 192.168.1.100

Specifies the router ID.
(config-router)# bgp confederation identifier 65531

Specifies the AS number (65531) of the confederation.
(config-router)# bgp confederation peers 64513 64514

Specifies the numbers of the other member ASs (64513 and 64514) connected to the local member AS.
(config-router)# neighbor 172.16.2.2 remote-as 65532

(config-router)# neighbor 192.168.2.2 remote-as 64512

(config-router)# neighbor 192.168.3.2 remote-as 64512

(config-router)# neighbor 192.168.4.2 remote-as 64513

(config-router)# neighbor 192.168.5.2 remote-as 64514

Configures the BGP4 peers, defining Router 1 as an external peer, Routers 2 and 3 as internal peers, and Routers 4 and 5 as member AS peers.