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Installing Software When a Firewall Exists

When a firewall separates the router from the network host, you must use FTP to transfer the software release files from the network host to the router. In this case, you must configure the FTP server on the router and ensure that FTP client software is installed on the network host.

For this network configuration, you must install the software from the normal operational mode of the command-line interface (CLI). You can access the CLI through either the local console or a Telnet session. If you have not yet configured the router to support Telnet, then you must use the local console.

To install the software, perform the following tasks. (See Table 13.)

Table 13: Software Installation Procedure When a Firewall Exists

  1. Obtain the required information for the installation.
  2. For routers that are currently operating, divert network traffic to another router.
  3. Access the Privileged Exec CLI command mode.
  4. Configure IP on an interface.
  5. Copy the release files on the network host.
  6. Configure access to the network host.
  7. Enable the FTP server on the router.
  8. Identify the files to transfer.
  9. Transfer the files to the user space on the router.
  10. Install the software release file to the system space on the router.
  11. Save the current configuration.
  12. Reboot the system.
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