CCNA Practice: How to copy the IOS back from the tftp server to the Router?
Hi,
1) I have a 1720 Cisco Router
2) I have copied the IOS (Flash) from the router to the PC through tftp server
-The connection between the router and the PC: using the cross-over cable
-The IP address of the Ethernet of the router is " 192.168.254.1 255.255.255.0 "
- The IP address of the PC is "192.168.254.2/24" (same subnet)
-The file name of the flash: c1700-sy-mz.121-27b.bin (this file is now at C:\TFTP-Root\c1700-sy-mz.1
3)My Goal: I want to copy back this IOS back to the Router
4) My questions: FIRST: Before i could copy back the ios to the router; i believe i should delete the IOS firstly; how do DELETE this IOS from the Router? (Pls provide the Command to do it), SECOND: To copy back the IOS (from tftp server) to the router, someone says use "Copy tftp flash"; i am confused here; if we have deleted the IOS from the router; i believe i could not TELNET anymore the router from the PC, right? and If i could not TELNET the Router from the PC, i could not EXECUTE the above command "Copy tftp flash"
5) Any Help?
6) Thank you
tjie
1) I have a 1720 Cisco Router
2) I have copied the IOS (Flash) from the router to the PC through tftp server
-The connection between the router and the PC: using the cross-over cable
-The IP address of the Ethernet of the router is " 192.168.254.1 255.255.255.0 "
- The IP address of the PC is "192.168.254.2/24" (same subnet)
-The file name of the flash: c1700-sy-mz.121-27b.bin (this file is now at C:\TFTP-Root\c1700-sy-mz.1
3)My Goal: I want to copy back this IOS back to the Router
4) My questions: FIRST: Before i could copy back the ios to the router; i believe i should delete the IOS firstly; how do DELETE this IOS from the Router? (Pls provide the Command to do it), SECOND: To copy back the IOS (from tftp server) to the router, someone says use "Copy tftp flash"; i am confused here; if we have deleted the IOS from the router; i believe i could not TELNET anymore the router from the PC, right? and If i could not TELNET the Router from the PC, i could not EXECUTE the above command "Copy tftp flash"
5) Any Help?
6) Thank you
tjie
ASKER CERTIFIED SOLUTION
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2) Your statement: """"If you erase the flash make sure you load on a proper IOS image before rebooting.""""
-What is the meaning of this?
-The meaning, i could not Reboot the Router after the above command (Router#erase flash:)
-Pls Explain
If you erase the flash, the router will still be functioning properly until you reboot it. Do not reboot after erasing the flash until you have loaded a new IOS.
This command:
"""" copy tftp:c1700-sy-mz.121-27b.bin flash:c1700-sy-mz.121-27b.
will copy your IOS from your TFTP server to your FLASH. Once you have done that, you should be OK to reboot the router.
Good luck.
-What is the meaning of this?
-The meaning, i could not Reboot the Router after the above command (Router#erase flash:)
-Pls Explain
If you erase the flash, the router will still be functioning properly until you reboot it. Do not reboot after erasing the flash until you have loaded a new IOS.
This command:
"""" copy tftp:c1700-sy-mz.121-27b.bin flash:c1700-sy-mz.121-27b.
will copy your IOS from your TFTP server to your FLASH. Once you have done that, you should be OK to reboot the router.
Good luck.
ASKER
Kaciuba,
1) I am still confused for "the followings......."
- It is maybe not related to the discussion .....
2) What is the difference of the "Current Configuration" of the router (which we can get from "Show run") and the "flash"?
3) Your explanation is greatly appreciated
4) Thank you
tjie
1) I am still confused for "the followings......."
- It is maybe not related to the discussion .....
2) What is the difference of the "Current Configuration" of the router (which we can get from "Show run") and the "flash"?
3) Your explanation is greatly appreciated
4) Thank you
tjie
The flash is memory. You store the IOS image on the flash. Think of the IOS as like the program.
The running-configuration is the configuration of the program, or IOS.
Make sense?
The running-configuration is the configuration of the program, or IOS.
Make sense?
ASKER
Let me understand your direction:
1) I go telnet the Router
- Say it Router#
- I will erase flash by this command:
*Router#erase flash:
2) Your statement: """"If you erase the flash make sure you load on a proper IOS image before rebooting.""""
-What is the meaning of this?
-The meaning, i could not Reboot the Router after the above command (Router#erase flash:)
-Pls Explain
3) This command:
"""" copy tftp:c1700-sy-mz.121-27b.bin flash:c1700-sy-mz.121-27b.
- I will execute it after the Rebooting of the Router, right? Pls Confirm
4) Thanks
tjie