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B-2 APPENDIX B: REMOTE MONITORING (RMON) TECHNOLOGY
Benefits of RMON Traditional network management applications poll network devices such as
switches, bridges, and routers at regular intervals from a network
management console. The console gathers statistics, identifies trends, and
can highlight network events. The console polls network devices constantly
to determine if the network is within its normal operating conditions.
As network size and traffic levels grow, however, the network management
console can become overburdened by the amount of data it must collect.
Frequent console polling also generates significant network traffic that
itself can create problems for the network.
An RMON implementation offers solutions to both of these problems:
■ The RMON probe looks at the network on behalf of the network
management console without affecting the characteristics and performance
of the network.
■ The RMON MIB reports by exception rather than by sending constant or
frequent information to the network management console. The RMON
probe informs the network management console directly if the network
enters an abnormal state. The console can then use more information from
the probe, such as history information, to diagnose the abnormal condition.
CoreBuilder
RMON
Implementation
The CoreBuilder Extended Switching software offers fulltime
embedded RMON support through SNMP for seven RMON Groups.
When combined with the Roving Analysis Port (RAP) function, RMON
support for these groups provides a comprehensive and powerful
mechanism for managing your network.
You can gain access to the RMON capabilities of the CoreBuilder 6000 system
only through SNMP applications such as Transcend® Enterprise Manager
software, not through the serial interface or telnet. For more information
about the details of managing 3Com devices using RMON, see the user
documentation of 3Com’s Transcend Network Management for Windows
suite of applications.