What command can be used to backup the running configuration to a configured TFTP server?

Backup Configurations with Text Capture (Tera Term)

Configuration files can be saved/archived to a text file using Tera Term.

As shown in the figure, the steps are:

Step 1. On the File menu, click Log.

Step 2. Choose the location to save the file. Tera Term will begin capturing text.

Step 3. After capture has been started, execute the show running-config or show startup-config command at the privileged EXEC prompt. Text displayed in the terminal window will be directed into the chosen file.

Step 4. When the capture is complete, select Close in the Tera Term: Log window.

Step 5. View the file to verify that it was not corrupted.

Restoring Text Configurations

A configuration can be copied from a file to a device. When copied from a text file and pasted into a terminal window, the IOS executes each line of the configuration text as a command. This means that the file will require editing to ensure that encrypted passwords are in plain text and that non-command text such as "--More--" and IOS messages are removed. This process is discussed in the lab.

Further, at the CLI, the device must be set at the global configuration mode to receive the commands from the text file being pasted into the terminal window.

When using Tera Term, the steps are:

Step 1. On the File menu, click Send file.

Step 2. Locate the file to be copied into the device and click Open.

Step 3. Tera Term will paste the file into the device.

The text in the file will be applied as commands in the CLI and become the running configuration on the device. This is a convenient method for manually configuring a router.

Backup Configurations with TFTP

Copies of configuration files should be stored as backup files in the event of a problem. Configuration files can be stored on a Trivial File Transfer Protocol (TFTP) server or a USB drive. A configuration file should also be included in the network documentation.

To save the running configuration or the startup configuration to a TFTP server, use either the copy running-config tftp or copy startup-config tftp command as shown in the figure. Follow these steps to back up the running configuration to a TFTP server:

Step 1. Enter the copy running-config tftp command.

Step 2. Enter the IP address of the host where the configuration file will be stored.

Step 3. Enter the name to assign to the configuration file.

Step 4. Press Enter to confirm each choice.

Restoring Configurations with TFTP

To restore the running configuration or the startup configuration from a TFTP server, use either the copy tftp running-config or copy tftp startup-config command. Use these steps to restore the running configuration from a TFTP server:

Step 1. Enter the copy tftp running-config command.

Step 2. Enter the IP address of the host where the configuration file is stored.

Step 3. Enter the name to assign to the configuration file.

Step 4. Press Enter to confirm each choice.

Using USB Drive

The Universal Serial Bus (USB) storage feature enables certain models of Cisco routers to support USB flash drives. The USB flash feature provides an optional secondary storage capability and an additional boot device. Images, configurations, and other files can be copied to or from the Cisco USB flash memory with the same reliability as storing and retrieving files using the Compact Flash card. In addition, modular integrated services routers can boot any Cisco IOS Software image saved on USB flash memory.

Cisco USB flash modules are available in 64MB, 128 MB, and 256MB versions.

To be compatible with a Cisco router, a USB flash drive must be formatted in a FAT16 format. If that is not the case, the show file systems command will display an error indicating an incompatible file system.

Here is an example of the use of the dir command on a USB file system:

Router# dir usbflash0:

Directory of usbflash0:/

1 -rw- 30125020 Dec 22 2032 05:31:32 +00:00 c3825-entservicesk9-mz.123-14.T

63158272 bytes total (33033216 bytes free)

Ideally, USB flash can hold multiple copies of the Cisco IOS and multiple router configurations. The USB flash allows an administrator to easily move and copy those IOS files and configurations from router to router, and many times, the copying process can take place several times faster than it would over a LAN or WAN. Note that the IOS may not recognize the proper size of the USB flash, but that does not necessarily mean that the flash is unsupported. Additionally, the USB ports on a router are usually USB 2.0, as shown in the figure

Backup Configurations with a USB flash drive

When backing up to a USB port, it is a good idea to issue the show file systems command to verify that the USB drive is there and confirm the name, as shown in Figure 1.

Next, use the copy run usbflash0:/ command to copy the configuration file to the USB flash drive. Be sure to use the name of the flash drive, as indicated in the file system. The slash is optional but indicates the root directory of the USB flash drive.

The IOS will prompt for the filename. If the file already exists on the USB flash drive, the router will prompt for overwrite, as seen in Figure 2.

Use the dir command to see the file on the USB drive and use the more command to see the contents, as seen in Figure 3.

Restore Configurations with a USB flash drive

In order to copy the file back, it will be necessary to edit the USB R1-Config file with a text editor to make it a valid config file; otherwise, there are a lot of entries that are invalid commands and no interfaces will be brought up.

R1# copy usbflash0:/R1-Config running-config

Destination filename [running-config]?

Which command would be used to backup a running configuration to a configured TFTP server?

Which command can be used to backup the device configuration to TFTP?

What command is used to backup configuration?

What is the command to back up your IOS to a TFTP server?