
Configuring IP Services
6-4 114065 Rev. A
Figure 6-2. Transit Autonomous System
In Figure 6-2, Autonomous System 20 is the transit AS. It is providing
information about its internal networks, as well as transit networks, to the
remaining ASs. The IBGP connections between BGP routers A, B, and C are
necessary to provide consistent information to the ASs.
AS 20
AS 10
AS 50
AS 11
AS 12
AS 30
IGP
BGP A
BGP B
BGP C
IP0021A
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