Foundation Summary

The Foundation Summary is a collection of tables that provides a convenient review of many key concepts in this chapter. If you are already comfortable with the topics in this chapter, this summary can help you recall a few details. If you just read this chapter, this review should help solidify some key facts. If you are doing your final preparation before the exam, the following tables are a convenient way to review the day before the exam.

Table 4-3. Switch-Management Configuration Commands

Task	Command Syntax
Identify switch	hostname hostname
Set EXEC-level password	line type number password password
Set privileged-level password	enable secret password
Set IP address	interface vlan vlan-id ip address ip-address netmask ip default-gateway ip-address
CDP (enabled by default on every switch port)	cdp enable

Table 4-4. File-Management Commands

Task	Command Syntax
Navigate to the directory of Flash	dir [flash:[directory]]
Change directory	cd flash:directory
Copy a file between Flash and a TFTP server	copy flash:[filename] tftp: or copy tftp: flash:[filename]
Delete a file in Flash	delete flash:filename
Clear Flash contents	erase flash: or format flash:
Save the running configuration	copy running-config startup-config or copy running-config tftp:
Overwrite the running configuration	copy startup-config running-config
Overwrite the permanent configuration	copy tftp: startup-config or erase startup-config

Table 4-5. Troubleshooting Commands

Task	Command Syntax
Display the current running environment and IOS version	show version
Display the running configuration	show running-config [interface type mod/num | vlan vlan-id | module mod]
Display the permanent configuration	show startup-config or show config
Display all technical support information	show tech-support
Verify an image checksum	verify flash:filename
Enable or disable debugging	debug keywords no debug keywords or no debug all or undebug all
Display CDP information	show cdp interface [type mod/num] or show cdp neighbors [type mod/num | vlan vlan-id] [detail] or show cdp entry * protocol