Cisco offers a variety of connectivity, expansion and upgrade options to accommodate the customer specific needs. Cisco's components are easily and inexpensively upgradeable as customer requirements change.Providing remote monitoring functions based on RMON and RMON-2 MIBs, the Network Analysis Module (NAM4) collects data at all layers so network managers can obtain analyses used for fault isolation and troubleshooting, capacity planning and management, performance management, application monitoring, and debugging.