Dell PowerSwitch S4820T 9.50.1 Configuration Guide for the S4820T System - Page 780

44 Remote Monitoring (RMON) Remote monitoring (RMON) is supported on the S4820T platform. 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 • 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. • Line Card Down - The same as Interface Down (see previous). • RPM Down, RPM Failover - Master and standby route processor modules (RPMs) run the RMON sampling process in the background. Therefore, when an RPM goes down, the other RPM maintains 780 Remote Monitoring (RMON)