3Com LINKBUILDER 3C18500 User Manual page 211

Benefits of RMON D-3
Also, since a probe needs to be able to see all traffic, a stand-alone
probe has to be attached to a non-secure hub port. Implementing
RMON in the hub means all hub ports can have security features
enabled.
Integrating RMON into Transcend SmartAgents also allows other
features to be incorporated to make RMON easier to use. Examples of
this include:
the AutoCalibrate feature, which records the peak value of a network
statistic over time and in a single operation automatically sets a
threshold at 120% of that peak value.
the Remote Poll feature, which allows the hub to ping another device
on the network and record the response time. An RMON Alarm can be
associated with that response time so that when the response time
from the server is poor because of an overloaded server or faulty cable
the hub can inform the network administrator automatically.
additional Actions-on-Event are also available when alarm thresholds
are exceeded, to automatically disable ports, blip ports (switch off and
then back on) or switch to a backup link.
The RMON capabilities of 3Com hubs can only be accessed through
SNMP applications, not through the serial interface or Telnet. No RMON
related VT100 forms are available. For more information about the
details of managing 3Com devices using RMON, see the user
documentation for Transcend Network Management Applications for
Windows and UNIX.
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