
17-27
Monitoring and Analyzing Switch Operation
Port Monitoring Features
Monitoring and Analyzing 
Switch Operation
Selecting or Removing Ports As Monitoring Sources.  After you config-
ure a monitor port you can use either the global configuration lev el or the 
interface context level to select ports as monitoring sources. You can also use 
either level to remove monitoring sources.
Syntax: [no] interface ethernet <port -list>
For example, with a port such as port A6 configure d as the monitoring (mirror) 
port, you would use either of the following commands to select ports A1 
through A3 and A5 for monitoring: 
Figure 17-21.Examples of Selecting Ports as Monitoring Sources
Figure 17-22.Examples of Removing Ports as Monitoring Sources
Web: Configuring Port MonitoringTo enable port monitoring:
1. Click on the Configuration tab.
2. Click on [Monitor Port].
3. To monitor one or more ports.
a. Click on the radio button for Monitor Selected Ports. 
b. Se lect the port(s) to monitor.
4. Click on [Apply Changes].
From the global config 
level, selects ports for 
monitoring sources.
Selects the interface 
context level, then 
selects the ports as 
monitoring sources.
These two commands 
show how to disable 
monitoring at the interface 
context level for a single 
port or all ports in an 
interface context level. 
These two commands show how to disable monitoring at 
the global config level for a single port or a group of ports .