Ccna Basic Notes Jun 2026

R1(config)# router ospf 1 R1(config-router)# network 192.168.1.0 0.0.0.255 area 0 R1(config-router)# network 10.1.1.0 0.0.0.3 area 0 R1(config-router)# passive-interface default (Good security practice)

– The actual hardware and electrical signals (Cables, Hubs). 2. Networking Devices Ccna Basic Notes

Router> enable Router# configure terminal Router(config)# hostname DC1-Core-RTR DC1-Core-RTR(config)# banner motd #Unauthorized access prohibited# R1(config)# router ospf 1 R1(config-router)# network 192