What is the best command show you the summary displays all ports and displays the status of the ports and the protocol used for each port ؟

On Cisco IOS, you can use the below command:

#show ip sockets detail

On Windows and Linux systems, you can use the below command:

#netstat -a

On CMD Type : netstat -a

Switch#show  interface

or

Switch# show ip interface brief

show ip interface brrief

Switch#Show ip interface Breif

on windows enviroment:

command prompt:

netstat -o

netstat -anp 

Here p switch is protocol

-a switch means all connections

n display address and port number