Dell C9000 Line Cards Networking Configuration Guide for the C9000 Series Vers - Page 884
Remote Monitoring (RMON), Implementation Information, Fault Recovery, Interface Down
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47 Remote Monitoring (RMON) Remote monitoring (RMON) is an industry-standard implementation that monitors network traffic 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 traffic passing through the router and segment traffic not destined for the router. The monitored interfaces may be chosen by using alarms and events with standard management information bases (MIBs). Implementation Information Configure SNMP prior to setting up RMON. For a complete SNMP implementation description, refer to Simple Network Management Protocol (SNMP). Configuring RMON requires using the RMON CLI and includes the following tasks: • Setting the rmon Alarm • Configuring an RMON Event • Configuring RMON Collection Statistics • Configuring 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 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. • Line Card Down - The same as Interface Down (see previous). • Chassis Down - When a chassis goes down, all sampled data is lost. But the RMON configurations are saved in the configuration file. The sampling process continues after the chassis returns to operation. 884 Remote Monitoring (RMON)
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