All slides are customized by Engr. Vernon Degala. For educational purposes only.All slides are customized by Engr. Vernon Degala. For educational purposes only.
Module 9: Basic Router Troubleshooting
inspired by Cisco Networking Academy
Computer Networks and Security
CCNA 2: Routers and Routing Basics
ORIGINAL COPY
All slides are customized by Engr. Vernon Degala. For educational purposes only.
Router#show ip route
•Displays the content of the IP routing table
•Entries for all known networks and subnets
•Code that indicates how network was learned
Statically
Administrator manually defines routes
Routes do not change until administrator
manually programs the changes
Static Routing Advantages
•Lower processor overheads
•Lower memory overheads
•No bandwidth utilization
•Secure operation
•Predictability
Static Routing Disadvantages
•High maintenance configuration
•No adaptability to change
Dynamically
Routing protocol exchange routing information
Router independently selects the best path
Routes change automatically as neighboring
routers update each other with new information
Dynamic Routing Advantages
•High degree of adaptability
•Low maintenance configuration
Dynamic Routing Disadvantages
•Increased Processor overheads
•Increased memory utilization
•High bandwidth utilization
