CCNA Portable Command Guide

This chapter provides information and commands concerning the following topics:

• Viewing the routing table

• Determining the gateway of last resort

• Determining the last routing update

• Testing OSI Layer 3 and Layer 7

• Interpreting the show interface command

• Clearing interface counters

• Using CDP to troubleshoot

• The traceroute command

• The show controllers command

• debug commands

• Using timestamps

• Enabling the HTTP server

• Using the netstat command