Port Monitoring Display Keys with Auto-Refresh Enabled describes the keys used to control the displays that appear if you use any of the show ports commands without specifying the no-refresh parameter (this is the default behavior).
| Key(s) | Description | 
|---|---|
| [U] | Displays the previous page of ports. | 
| [D] | Displays the next page of ports. | 
| [Esc] | Exits from the screen. | 
| [0] | Clears all counters. | 
| [Space] |  Cycles through the following screens: 
 Note: Available only using the show
                    ports utilization command. 
               | 
            
Port Monitoring Display Keys with Auto-Refresh Disabled describes the keys used to control the displays that appear if you use any of the show ports commands and specify the no-refresh parameter.
| Key | Description | 
|---|---|
| [Q] | Exits from the screen. | 
| [Space] | Displays the next page of ports. |