User's Manual

150 CHAPTER 4: DISCOVERING THE NETWORK
3Com Network Director uses interface speeds when monitoring links in
order to calculate utilization. If 3Com Network Director was unable to
determine a speed for a connected interface and you start monitoring the
link corresponding to that interface then 3Com Network Director will be
unable to provide the utilization monitor for that item.
This situation can arise on some third party devices that do not provide a
suitable speed via their MIBs. It may also occur if 3Com Network Director
lost communication with the device during Network Discovery, in which
case additional errors should appear in this report to indicate the loss of
communication.
You can set the speeds for both directions of a WAN link from the
General tab of the Properties dialog box for the link. Setting the speeds
will automatically start monitoring for a Utilization monitor in this state if
the link is being monitored.