3com 2226 PLUS Guia Do Utilizador
Monitoring Traffic
39
Figure 21 Port Statistics Screen
Figures on the Statistics screen for individual ports are
not updated in real time. To view the latest statistics
for the port, click Refresh.
not updated in real time. To view the latest statistics
for the port, click Refresh.
Monitoring Traffic
The Switch allows you to monitor traffic going in and
out of a particular port. For traffic monitoring to
work, you need to attach a network analyzer to one
port and use it to monitor the traffic of other ports in
the stack.
out of a particular port. For traffic monitoring to
work, you need to attach a network analyzer to one
port and use it to monitor the traffic of other ports in
the stack.
To set up traffic monitoring, you need to set an analy-
sis port (the port that is connected to the analyzer),
and a monitor port (the port that is to be monitored).
Once the pair is defined, and you enable traffic moni-
sis port (the port that is connected to the analyzer),
and a monitor port (the port that is to be monitored).
Once the pair is defined, and you enable traffic moni-
toring, the Switch takes all the traffic going in and
out of the monitor port and copies it to the analysis
port.
out of the monitor port and copies it to the analysis
port.
CAUTION: The analysis port (Mirror From) should
have a higher bandwidth than the monitor port (Mir-
ror From). Otherwise, the Switch may not be able to
copy all traffic effectively during periods of high traf-
fic.
have a higher bandwidth than the monitor port (Mir-
ror From). Otherwise, the Switch may not be able to
copy all traffic effectively during periods of high traf-
fic.
To set up traffic monitoring for a port:
1
Attach a network analyzer to a port.
2
Access the Web interface, and then click Traffic Mon-
itoring on the menu.
itoring on the menu.
3
On the Port Mirroring screen, select the Enable check
box.
box.
Figure 22 Traffic Monitoring Screen
4
In Mirror From, click the port number that you want
to monitor.
to monitor.
Only one port can be selected from the Mirror Form
row, which means that you can only monitor one port
at any given time.
row, which means that you can only monitor one port
at any given time.
5
In Mirror To, click the port number to which the port
analyzer is connected. Traffic to and from the port
selected in Mirror From will be forwarded to this port.
analyzer is connected. Traffic to and from the port
selected in Mirror From will be forwarded to this port.