How do netflow/cflowd compare with RMON?
NetFlow is not intended as a replacement for SNMP and/or RMON/RMON2 capabilities. Instead, Cisco suggests that SNMP, RMON and NetFlow data collection capabilities be combined to maximize network monitoring, management, and planning. In particular, Cisco recommends: • utilize carefully-designed SNMP polling policies to gather key statistics on backbone/core routers and MIB objects not related to flow-by-flow measurements, including interface errors and memory and CPU utilization statistics required for real time monitoring • utilize RMON capabilities for detailed drill-down including application tracking, interface error analysis and packet capture for problem diagnosis and resolution and for threshold driven network management via the events and alarms capabilities.
