1. CHAPTER 7

2. CHAPTER 6 Review

3. ROUTER CONFIGURATION

4. Router modes & Configuration methods:
Via a console port:
# configure terminal
From NVRAM:
# configure memory

5. Another configuration commands:
From TFTP server:
# copy tftp running-config
Another configuration commands:
# show running-config
# copy running-config startup-config
# show startup-config
# erase startup-config

6. > # (config) # ROUTER Modes: User mode: Priviledged mode:(enable)
Global mode:
(config) #
Router

7. After completion this chapter you will be able to:
Load IOS from different source options.
Maintain backup files.
Upgrade Cisco IOS software.
Manage configuration register contents.
Use a TFTP server.

8. Sources of IOS software:
Flash memory.
TFTP server.
ROM.

9. Locating IOS software:
The location of IOS is indicated by the in the configuration register.
boot field
boot field
The default value in the boot field indicates to follow the boot sequence commands in NVRAM :

10. (Configure)# boot system flash ios-filename
(Configure)# boot system tftp ios-filename tftp-address
(Configure)# boot system ROM
If NVRAM lacks boot sequence commands, system follows its own sequence:
flash
TFTP
ROM

11. BOOT FIELD & CONFIGURATION REGISTER15 3
Boot field
To change configuration register settings:
(Configure)# config-register <hex-value>

12. . . Boot field settings: # show version
Config-register boot field description
0 x 100
0 x --
Boot manually from ROM (b)
Boot automaticall from ROM.
0 x 101
0 x -- 1
0 x 102
0 x -- 2 .
0 x 10F .
0 x --
Use the boot system commands in NVRAM F
To check configuration register & boot field settings:
# show version

13. . . ignored ROM (manually) ignored ROM (automatic) No boot Commands
boot field boot system commands boot sources of IOS
0 x --
ignored
ROM (manually)
0 x -- 1
ignored
ROM (automatic)
0 x -- . 2 F
No boot Commands
flash
TFTP
ROM
0 x -- . 2 F
# boot system flash
ios-filename
# boot system ROM
# boot system tftp
ios-filename tftp-address

14. TFTP server as a backup storage location:
Before copying s/w between TFTP and flash make sure that you:
Can access TFTP server (ping)
Check the size of the file
Have sufficient memory space

15. Start copying flash to tftp:
# copy flash tftp
You will be prombted for:
Tftp-address
Tftp-address
Ios-filename
Ios-filename

16. Start copying ios from tftp:
# copy tftp flash
You will be prombted for:
tftp-address
Tftp-address
ios-filename
Ios-filename
If there is a file exists in a flash, or a flash is new: