LOOPBACKS: 192.0.2.0/24
Core Routers: 192.0.2.0/26
CR1: 192.0.2.1/32
CR2: 192.0.2.2/32
Distribution Switches: 192.0.2.64/26
DS1: 192.0.2.64/32
DS2: 192.0.2.65/32
Access Switches: 192.0.2.128/25
AS1: 192.0.2.132/29
AS2: 192.0.2.133/29

P2P LINKS: 192.168.255.0/24
CR1-DS1: 192.168.255.0/30
CR1-DS2: 192.168.255.4/30
CR2-DS1: 192.168.255.8/30
CR2-DS2: 192.168.255.12/30
DS1-DS2: 192.168.255.16/30