3com 2200 User Manual

Starting Port Monitoring

9-5

Starting Port
Monitoring

After you have a local or remote port configured for the network analyzer,
you can start monitoring port activity.

3Com recommends that you ALWAYS configure the analyzer port before
configuring the monitored ports.

To start monitoring a new port:

1 From the top level of the Administration Console, enter:

analyzer start

2 Press Return to select Ethernet as the port type.

3 Enter the number of the Ethernet port to monitor.

4 Enter the MAC address of the port to which the network analyzer is

attached (the port to which the data will be forwarded).

The MAC address of the analyzer port is displayed when you configure that
port, and it is also available when you display the roving analysis
configurations on the Switch 2200 system to which the analyzer is attached.

See the example below for starting port monitoring:

Select port type [Ethernet]:

Select port (1-16):

Enter the target analyzer port address:

00-80-3e-0a-3b-02

Port selection errors

If your port selection is not valid, you receive one of the following
messages:

Error starting monitoring - analyzer already configured on

this port

Error starting monitoring - monitoring already configured

on this port

MAC address error

If the analyzer port is remote, its MAC address may not be learned on the
local system and you receive the following error message:

Error starting monitoring - analyzer location unknown

CAUTION:

If you receive the above message, check your analyzer port

configuration before proceeding. An incorrect configuration will result in
frames being continuously flooded throughout your bridged network.

Top-Level Menu

system
ethernet
fddi
bridge
ip
snmp

➧

analyzer
script
logout

display
add
remove

➧

start
stop