User's Manual

280 CHAPTER 7: MONITORING THE NETWORK
■ If neither end of the link can be monitored then the link cannot be
monitored.
■ Otherwise, if one end of the link cannot be monitored then use the
other end.
■ Otherwise, if only one end of the link is currently being monitored
then use that end.
■ Otherwise, if port information is only available for one end of the link
then use that end. Note that full port information may not be
available for non-3Com devices.
■ Otherwise, if only one end of the link is being fully monitored then use
that end, for example, if the other end is in response monitoring
mode.
■ Otherwise, if only one end of the link supports high-capacity RMON
counters then use that end.
■ Otherwise, pick an end at random.
3Com Network Director
will reassess the device to be used as the data
source whenever you stop or start monitoring on either of the devices at
the ends of the link:
■ If you stop monitoring on the device that has been selected as the
data source for the link then 3Com Network Director will
automatically switch across to using the device at the other end of the
link as the data source.
■ If you subsequently restart monitoring on that device then 3Com
Network Director will automatically switch back to using that device as
the link’s data source.
Components This section describes the components that may be used to view
monitoring information for the devices and links in your network.
Live Graphs Window To view the live data for the monitors associated with a device or link,
select the item you are interested in and then either select Monitoring >
Live Graphs, or right-click on the item and select Live Graphs window
from the item’s right-click menu.This launches the Live Graphs dialog box
for the item: