Configuring OSPF on a Router

Using this IP address table and the image to help, here are the commands I ran to configure OSPF.

Network Name	Network Address	Subnet Mask	Default Gateway	Router name
Border to Data Center	10.9.1.0	255.255.255.248	10.9.1.1	Border
East Router to Data Center	10.9.1.20	255.255.255.252	10.9.1.21	East Router
Data Center to West Router	10.9.1.32	255.255.255.252	10.9.1.33	Data Center Router
East	10.9.20.0	255.255.255.0	10.9.20.1	East Router
West	10.9.40.0	255.255.255.0	10.9.40.1	West Router

---

Border Router

router ospf 1
network 10.9.1.0 0.0.0.7 area 0

Data Center Router

router ospf 1
network 10.9.1.0 0.0.0.7 area 0
network 10.9.1.32 0.0.0.3 area 0
network 10.9.1.20 0.0.0.3 area 0

West Router

router ospf 1
network 10.9.1.32 0.0.0.3 area 0
network 10.9.40.0 0.0.0.255 area 0

East Router

router ospf 1
network 10.9.1.20 0.0.0.3 area 0
network 10.9.20.0 0.0.0.255 area 0