Which command provides a summary of router interface statuses?

The command that provides a summary of router interface statuses is indeed the one that lists the IP interface details in a concise format, which is the command to display a brief summary of the IP interfaces on the router. This command shows crucial information about each interface, including its IP address, status (up or down), and protocol state, allowing for quick assessment of the network interface conditions.

Using this command is especially useful for network technicians who need to quickly ascertain the operational status of multiple interfaces without having to delve into exhaustively detailed output. It helps identify any interfaces that may be down or misconfigured, facilitating timely troubleshooting and maintaining network reliability.

The other commands either provide more detailed information than what is typically needed for a summary status check or focus on different aspects of the interfaces, making them less suitable for obtaining a quick overview of the interface statuses.