Users Guide
Remote Monitoring (RMON)
RMON is an industry-standard implementation that monitors network trac by sharing network monitoring information. RMON provides
both 32-bit and 64-bit monitoring facility and long-term statistics collection on Dell 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 trac passing through the router and segment trac 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
Congure SNMP prior to setting up RMON.
For a complete SNMP implementation description, refer to Simple Network Management Protocol (SNMP).
Conguring RMON requires using the RMON CLI and includes the following tasks:
• Setting the rmon Alarm
• Conguring an RMON Event
• Conguring RMON Collection Statistics
• Conguring 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 congurations are saved in the conguration le.
The sampling process continues after the chassis returns to operation.
• Platform Adaptation — RMON supports all Dell Networking chassis and all Dell Networking Ethernet interfaces.
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