Interfaces | 243
Monitor and Maintain Interfaces
Monitor interface statistics with the monitor interface command. This command displays an ongoing list of 
the interface status (up/down), number of packets, traffic statistics, etc. 
The information displays in a continuous run, refreshes every two seconds by default (Figure 13-24). Use 
the following keys to manage the output.
Command Syntax Command Mode Purpose
monitor interface interface EXEC Privilege View the interface’s statistics. Enter the type of interface and 
slot/port information:
• For a 100/1000/10000 Ethernet interface, enter the 
keyword TenGigabitEthernet followed by the slot/port 
information.
• For a 10 Gigabit Ethernet interface, enter the keyword 
TenGigabitEthernet followed by the slot/port 
information.
• For a 40-Gigabit Ethernet interface, enter the keyword 
fortyGigE followed by the slot/port information.
m - Change mode  c - Clear screen
 l - Page up a - Page down
T - Increase refresh interval (by 1 second)  t - Decrease refresh interval (by 1 second)
q - Quit