NetCrunch is licensed per number of monitored nodes or switch interfaces whichever number is greater.
So the license for 50 nodes allows you to monitor up to 50 nodes and if these are also connected to the switch you do not need any more licenses.
On the other hand, when you add only one node representing switch with 48 ports, and you monitor all of these ports you need a license for all monitored interfaces (which is 50 in this case).
Estimated number of monitored nodes or interfaces (whichever is greater)
NetCrunch Platform (Atlas Database, Dashboards, Logs, Console, Alert Correlation)
SNMP & Core Monitoring (SNMP, MIB Compilers, traps, network services)
Logs, Servers, Virtualization and Application Monitoring (OS. Windows, Linux, ESX and others, WMI, IPMI, SQL and more)
Hardware & Software Inventory for Windows (Track software and hardware on Windows machines)
Layer 2 Visualization (Topology Maps, Port Mapping, VLANs)
Traffic Flow Analyzer (NetFlow,IPFix,sFlow with Cisco NBAR support)
Integration Services (Trap & Syslog Forwarding, 21 service desk integrations)
Advanced Monitoring and Alerting (Advanceed Conditions, Business Status, Advanced Thresholds)
Advance Configuration (Multi-user management, organizational groups, Monitoring Policies, Correlations, and Business Status Node)
