Free Monitoring Routers and Switches using Nagios Core

How to configure Nagios Core to use the PNP4Nagios program to generate performance graphs Thanks for watching, don t forget like and subscribe at 1. Download CentOS 2. Install CentOS on VirtualBox 3. Install Nagios Core on CentOS 4. Monitoring Routers and Switches MIB Browser : OID UpTime : Port Status : Port InOctets : Port OutOctets: