Upgrading the Software

• From the Cisco IOS command-line interface (CLI)

• From the ROM monitor

Cisco recommends upgrading your software from the CLI for the following reasons:

• You can leave your router running during the software upgrade, but if you upgrade from the ROM monitor, you have to power down your router.

• Your overall software upgrade time is shorter if you use the CLI than if you upgrade from the ROM monitor. (The software upgrade time from the CLI can vary depending on the amount of activity on the link and whether the Trivial File Transfer Protocol [TFTP] server is local or remote.)

To upgrade your software from the CLI, you need a Cisco 805 router that is running Cisco IOS software and a TFTP server.

Step 1 To download a current Cisco IOS release, go to the following URL. This URL is subject to change without notice.

The download of software from the TFTP server to the router can occur through either the router Ethernet or serial port. You can initiate a session with the TFTP server through either the console port or a Telnet session.

Step 5 Modify Flash memory so that you can load your new software image in Flash memory and yet the run the old image:

router# erase flash
 

router# copy tftp://ip/filename flash:filename
 

ip is either the IP address of the TFTP server or if you have the domain name system (DNS) set up, the name of the TFTP server.

Step 7 Enter global configuration mode:

router# configure
router(config)#
 

Step 8 Specify the image that the router loads at startup:

router(config)# boot system flash filename
 

Step 1 To download a current Cisco IOS release, go to the following URL. This URL is subject to change without notice.

boot# set file-name=filename
 

• Cisco 805 router with an IP address of 10.1.0.1 and a subnet mask of 255.255.255.0

• TFTP server with an IP address of 10.2.0.2

• Gateway server with an IP address of 10.1.0.2

Step 1 Set IP address for the TFTP server:

boot# set serv-ip = 10.2.0.2 
 

Step 2 Set IP address and subnet mask for the router:

boot# set unit-ip = 10.1.0.1 
boot# set netmask = 255.255.255.0
 

Step 3 If the TFTP server is on a different subnet than the router, set up an IP address for a gateway server:

boot# set gate-ip = 10.1.0.2
 

Step 4 Download the software image from the TFTP server:

boot# upload tftp
 

The following is a sample of output that displays while the software is downloading:

TFTP initiated.
 
File name: c800-g3n-mw
RAM size: 0x00650bc8 (6622152)
Raw size: 0x00541415 (5510228)
Image size: 0x002cbc28 (2931752)
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
upload: succeeded (17 seconds).
 

Step 5 Check to make sure that the software image has been downloaded to RAM:

boot# list
 

Step 6 Mark the old software image for deletion:

boot# delete filename
 

boot# erase
 

Step 8 Save the new software image to Flash memory:

boot# save file
 

Step 9 Check to make sure that the new software image has been saved to Flash memory:

boot# list
 

Step 10 Boot the new software image:

boot# boot flash

Step 1 Increase the router console port baud rate:

boot# set baud=115200
 

Step 2 Reset the console port:

boot# reset
 

Step 3 Optional. If you want the router console port to continue running at 115200 baud, you can save the configuration:

boot# save
 

Step 4 Change your host baud rate to 115200.

For the new baud rate to take effect, you might need to save the new baud rate, exit from the terminal emulator, and reestablish a new session.

Step 5 Download the software image from the host:

boot# upload xmodem
 

The following is a sample of output that displays while the software is downloading:

Ready for X/Modem upload...
 
[note: no status bar for xmodem transfers, 
abort with Control-X or break]
 
upload: succeeded (312 seconds).
 

Step 6 From your host, enter the XMODEM send command for your terminal emulation software.

For example, if you are using HyperTerm, click the Transfer menu and select Send File. The Send File dialog box appears. Click Browse to locate the software image. Select XMODEM as the protocol, and click Send.

Step 7 Check to make sure that the software image has been downloaded to RAM:

boot# list
 

Step 8 Mark the old software image for deletion:

boot# delete filename
 

Step 9 Delete the old software image:

boot# erase
 

Step 10 Save the new software image to Flash memory:

boot# save file
 

Step 11 Check to make sure that the new software image has been saved to Flash memory:

boot# list
 

Step 12 Boot the new software image:

boot# boot flash

Step 1 Increase the router console port baud rate:

boot# set baud=115200
 

Step 2 Reset the console port:

boot# reset
 

Step 3 Optional. If you want the router console port to continue running at 115200 baud, you can save the configuration:

boot# save
 

Step 4 Change the host baud rate to 115200.

For the new baud rate to take effect, you might need to save the new baud rate, exit from the terminal emulator, and reestablish a new session.

Step 5 Change the host to no flow control.

Step 6 Download the software image from the host:

boot# upload serial
 

The following is a sample of output that displays while the software is downloading:

Ready for raw ASCII upload...
 
File name: c800-g3n-mw
RAM size: 0x00650bc8 (6622152)
Raw size: 0x00541455 (5510228)
Image size: 0x002cbc28 (2931752)
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
upload: succeeded (258 seconds).
 

Step 7 On your host, set the interline and intercharacter delays to zero.

Step 8 On your host, enter a raw serial upload command to your terminal emulation software.

Step 9 Check to make sure that the software image has been downloaded to RAM:

boot# list
 

Step 10 Mark the old software image for deletion:

boot# delete filename
 

Step 11 Delete the old software image:

boot# erase
 

Step 12 Save the new software image to Flash memory:

boot# save file
 

Step 13 Check to make sure that the new software image has been saved to Flash memory:

boot# list
 

Step 14 Boot the new software image:

boot# boot flash