What are the best practices to follow in a production environment when running operational and configuration mode commands?

Using configuration mode only when necessary, and exiting when done, is considered a best practice in a production environment for several reasons. Configuration mode allows you to make changes to the device's configuration, which can impact its operation. By using this mode only when necessary, you minimize the time the device spends in a state where it is vulnerable to changes or misconfigurations that could affect its stability or security.

Additionally, exiting configuration mode promptly after completing tasks helps to ensure that no accidental changes are made afterward. It keeps the operational environment stable and limits the scope and duration of configuration changes, reducing the risk of errors that could arise from being in an active configuration context longer than necessary.

In production settings, preserving the integrity and continuity of network operations is vital. This approach facilitates better change management practices, allowing for clear documentation and trackability of when and how changes were made while minimizing accidental disruption to the network services.

In contrast, performing all tasks in configuration mode could lead to prolonged exposure to potential misconfigurations or security risks. Similarly, making changes in batches or running commands without verification may introduce critical errors, especially if the consequences of those commands are not fully understood or tested beforehand.