Motorola BSR 2000, Configuration And Management Manual

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Release 1.0 Configuring BGP
526360-001-00 Rev. B MGBI 12-45
MOT(config)#router bgp 100
MOT(config-bgp)#neighbor 150.20.30.1 remote-as 100
MOT(config-bgp)#network 175.40.30.0
The following commands configure Router Los Angeles:
MOT(config)#router bgp 300
MOT(config-bgp)#neighbor 1.1.1.1 remote-as 100
MOT(config-bgp)#network 192.56.0.0
Configuring the AS-path Attribute
When a BGP route passes through an AS, BGP prepends its AS number to the route.
The AS_path attribute contains the list of ASs that a route has gone through.
In Figure 12-16 , Router Boston advertises network 150.60.0.0 in AS 400 with an
AS-path of 100. When the BGP route arrives in AS 400, Router Los Angeles adds its
AS number. When the BGP route arrives at Router New York, its AS_path attribute
contains AS numbers 400 and 100.