Configure IP address

As shown in the figure, use 172.16.0.2/32 172.16.0.3/32, etc.

The user loopback address uses 172.16.2.1/24 172.16.3.1/24 etc.

R2 example:

Set up OSPF for AS2

R2 example:

Modify the network type for the user loopback interface

R2 example:

Configuring MPLS

Configure mpls for the intra-AS interface

R2 example:

Configure BGP for AS2 2 5 7

The BGP relationship between AS2 and AS1/AS2 is configured, which is used for summary announcement and network-wide communication

R2 example:

R2/3/4 user network segment from R1 to AS2 is accessed based on R5
            R5/6/7             R2

Configuration in R2:

Configuration in R1:

R5 configuration: