How to Install Cisco IOS 1751 for Routers
Cisco networking devices use the Cisco proprietary Internetwork Operating System, or IOS, as the platform operating system. A Cisco network device's IOS must be upgraded periodically to apply security patches and detect fixes. The IOS may also need to be upgraded if the network infrastructure requirements have changed and now require additional features to handle new types of protocols and traffic. Use the TFTP protocol and telnet to connect to a Cisco 1751 router and upgrade the IOS.
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Things You'll Need
- Microsoft Windows 7 computer with TFTP service and telnet client installed
- Cisco 1751 router with telnet service enabled
- IP address of the Cisco 1751 router
- Telnet password for the Cisco 1751 router
- Password for Cisco 1751 Privilege Exec mode
- Microsoft Windows 7 computer IP address
- Cisco 1751 router IOS image stored in a TFTP service root directory
Instructions
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Click the "Start" button located on the PC desktop of the Windows 7 computer, then type "cmd" in the Search box. Right-click on the command line icon that appears in the upper-left pane. Select "Run as Administrator." The Command Prompt window will appear.
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Type "telnet 1.2.3.4" on the command line, substituting the "1.2.3.4" with the IP address of a Cisco 1751 router, and then press the "Enter" key. Type the telnet password for the Cisco 1751 router when prompted and then press the "Enter" key. Type "enable" on the command line and press the "Enter" key. Enter the Privilege Exec password for the Cisco router when prompted and press "Enter."
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Type "copy tftp flash" on the command line and press "Enter." Type the Windows 7 computer IP address on the command prompt when the TFTP server IP address is requested and then press the "Enter" key. Type the IOS file when prompted and press the "Enter" key. Type the IOS filename when prompted for the destination filename and press the "Enter" key.
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Enter "Y" when "Erase Flash: Before Copying? [Confirm]" displays and press "Enter." The new IOS file copying progress will display and provide notification when completed.
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Type "config term" at the command prompt and press the "Enter" key. Enter "no boot system" at the command prompt and press "Enter." Type "boot system flash:ios_filename," substituting the "ios_filename" with the IOS filename of the IOS image that was transferred by TFTP to the Cisco 1751 router and press the "Enter" key. Enter "exit" at the command prompt and press the "Enter" key. Type "write memory" and press the "Enter" key. Type "reload" on the command line and press "Enter." The Cisco 1751 router IOS is complete.
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References
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