OSPF four on FR: point-to-point

One, topology map

Second, the experiment in the point-to-point sub-interface environment of the OSPF experiment

Third, the configuration

1. Package the physical interface into FR mode

R1#show Run int s0/0

Interface serial0/0

No IP address

Encapsulation Frame-relay

2. In the center router from multiple point-to-point sub-interface, two sub interfaces belong to different subnets

Configuring on the R1

Interface serial0/0.1 Point-to-Point

IP address 12.1.1.1 255.255.255.0

Frame-relay INTERFACE-DLCI 102

!

Interface serial0/0.2 Point-to-Point

IP address 13.1.1.1 255.255.255.0

Frame-relay INTERFACE-DLCI 103

3. Each of the two branches from a point-to-point sub-interface to the central router

R3#show Run int s0/0.2

Building configuration ...

Current configuration:114 bytes

!

Interface serial0/0.2 Point-to-Point

IP address 13.1.1.3 255.255.255.0

Frame-relay Interface-dlci 301

r2# Show Run int s0/0.1

Building configuration ...

Current configuration:114 bytes

!

Interface serial0/0.1 Point-to-Point

IP address 12.1.1.2 255.255.255.0

Frame-relay INTERFACE-DLCI 201

End

4. Configure the IP address on the sub-interface and configure the Frame-relay Interface-dlci DLCI number