Diffrence between "wr" and "copy running config to startup config"

IT administrators are often tasked with managing the configuration of network devices. In order to ensure consistency across devices, the configurations must be saved and backed up periodically. Two common ways to accomplish this are using the “wr” command and the “copy running-config startup-config” command. While these commands accomplish the same task, there are subtle differences between them.

The “wr” command is a shorthand way of writing the configuration of a device to a file stored on the device itself or a remote storage location. This command can be used to store the configuration of the device in a variety of formats, such as text, binary, XML, or HTML. It can also be used to back up the configuration of multiple devices at once.

The “copy running-config startup-config” command, on the other hand, is used to save the current running configuration of the device to its startup configuration. This command is most often used when making changes to the configuration of a device, as it ensures that the changes will be applied when the device is restarted or powered on. While the “wr” command can also be used for this purpose, it is more commonly used to backup the configuration of a device.

The main difference between the “wr” command and the “copy running-config startup-config” command is that the “wr” command saves the configuration to a file, while the “copy running-config startup-config” command saves the configuration to the device’s startup configuration. This has several implications. First, the “wr” command can be used to save the configuration of multiple devices at once, while the “copy running-config startup-config” command must be used individually for each device. Second, the “wr” command can be used to save the configuration in a variety of formats, while the “copy running-config startup-config” command only saves the configuration in the device’s native format. Finally, the “wr” command does not apply the changes to the device until the device is rebooted or powered on, while the “copy running-config startup-config” command does.

In conclusion, the “wr” command and the “copy running-config startup-config” command are both used to save the configuration of a device. However, there are subtle differences between them. The “wr” command is used to save the configuration to a file, while the “copy running-config startup-config” command is used to save the configuration to the device’s startup configuration. It is important to understand the differences between these two commands in order to make sure that the configuration of a device is saved correctly and securely.