
114070 Rev. B 4-1
Chapter 4
Customizing a DCM for RMON
This section describes how to customize an Ethernet data collection module
(DCM) as a remote monitoring (RMON) device. It also describes how to modify
the DCM configuration by changing DCMMW configuration parameters.
This chapter includes the following topics:
• Ethernet DCM and RMON summary
• Managing the Ethernet DCM configuration
• Managing the Ethernet DCM using the Technician Interface
• Viewing and analyzing statistics using Optivity
Refer to Chapter 2 for RMON concepts and the issues you should consider when
using an Ethernet DCM for RMON. Refer to Appendix B for DCMMW
parameter defaults.
Ethernet DCM and RMON Summary
The Ethernet DCM physically connects to BayStack AN and ANH base modules.
It contains a Flash memory SIMM for its own boot image and configuration file.
The Ethernet DCM runs RMON agent software that
• Gathers statistics by monitoring packets on an Ethernet segment
• Stores the information according to the RMON MIB specification, in
compliance with RFC 1757
To communicate with the RMON agent software on the DCM, the router requires
a software subsystem, called DCM middleware (DCMMW). This software
subsystem enables and configures an installed DCM.
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