System information

Configuring BGP

12-53

Example

In Figure 12-18, from Router Boston, the route for reaching 192.56.0.0 has an

AS-path of 300 with an origin attribute of IGP. From Router Boston, the route for

reaching 175.40.30.0 has an origin attribute of IGP. From Router Los Angeles, the

route for reaching 150.20.0.0 has an AS-path of 100 with an origin attribute of IGP.

For Router Los Angeles, the route for reaching 175.40.0.0 has an AS-path of 100 with

an origin attribute of Incomplete. Route 175.40.0.0 is a redistributed route.

Figure 12-18 Configuring the Origin Attributed

Table 12-1 BSR Origin Assignment

BGP Route Entry Type Origin Code

Redistributed INCOMPLETE

Network IGP

Peer-based default (0/0) IGP

AS 100

AS 300

192.56.0.0

Albany

IBGP

Boston

EBGP

1.1.1.2

1.1.1.1

175.40.30.1

170.20.20.1

150.20.30.1