
Configuring SNMP, RMON, BootP, DHCP, and RARP Services
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Figure 2-3. Bay Networks RMON Architecture
The Ethernet DCM physically connects to the BayStack router base modules and
the ARN Ethernet expansion modules. The Ethernet DCM contains a flash
memory module for its own boot image and configuration files. The Ethernet
DCM runs the 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 Ethernet DCM, the router
uses a software subsystem, the DCMMW. This software subsystem enables and
configures an installed Ethernet DCM, and allows you to modify the Ethernet
DCM configuration, boot the Ethernet DCM, and disable the Ethernet DCM using
Site Manager. You can use an SNMP-based network management application that
supports RMON to view RMON statistics.
RMON MIB Groups
The Ethernet DCM board supports a set of RMON MIB groups. RFC 1757
defines the function and organization of these groups. Bay Networks implements
the following groups in its RMON agent for the router:
• Statistics
• History
• Host
• HostTopN
DCM
Flash memory
DCMMW
DCM
Base module
SNM0010A
Agent
RMON
agent
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