White Papers

Remote Monitoring (RMON)
RMON is an industry-standard implementation that monitors network trac by sharing network monitoring information. RMON provides
both 32-bit and 64-bit monitoring facility and long-term statistics collection on Dell EMC Networking Ethernet interfaces.
RMON operates with the simple network management protocol (SNMP) and monitors all nodes on a local area network (LAN) segment.
RMON monitors trac passing through the router and segment trac not destined for the router. The monitored interfaces may be
chosen by using alarms and events with standard management information bases (MIBs).
Topics:
• Implementation Information
• Fault Recovery
Implementation Information
Congure SNMP prior to setting up RMON.
For a complete SNMP implementation description, refer to Simple Network Management Protocol (SNMP).
Conguring RMON requires using the RMON CLI and includes the following tasks:
• Setting the rmon Alarm
• Conguring an RMON Event
• Conguring RMON Collection Statistics
• Conguring the RMON Collection History
RMON implements the following standard request for comments (RFCs) (for more information, refer to the Standards Compliance
chapter).
• RFC-2819
• RFC-3273
• RFC-3434
• RFC-4502
Fault Recovery
RMON provides the following fault recovery functions.
• Interface Down — When an RMON-enabled interface goes down, monitoring continues. However, all data values are registered as
0xFFFFFFFF (32 bits) or ixFFFFFFFFFFFFFFFF (64 bits). When the interface comes back up, RMON monitoring processes resumes.
NOTE
: A network management system (NMS) should be ready to interpret a down interface and plot the interface
performance graph accordingly.
• Device Down — When a device goes down, all sampled data is lost. But the RMON congurations are saved in the conguration le.
The sampling process continues after the chassis returns to operation.
• Platform Adaptation — RMON supports all Dell EMC Networking chassis and all Dell EMC Networking Ethernet interfaces.
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