Phase - 01 - Download Important Software
Use following links to download;
- Oracle Virtualbox - https://www.virtualbox.org/wiki/Downloads
- LibreNMS VM image (CnetOS) - http://www.lathwood.co.uk/librenms/librenms_centos_7.ova
Note: Install Virtualbox to your computer with default configurations. Make sure that your Laptop / PC is supporting to 'Virtual Technology' in the BIOS. Otherwise your PC will not support to import 64 bits OSs to the Virtualbox.
Phase - 02 - Import LibreNMS VM to Virtualbox
Double click on the LibreNMS OVA image file and start the installation. Click 'Import'
Accept the Software Agreement
Thereafter, Your virtual disk image will import to VirtualBox
Once the importing process is over, Go to the settings of the LibreNMS virtual PC and change the network card settings as bellow. Select the Bridged Adapter and Physical Interface driver from drop downs.
Thereafter, Change the IP address of the physical interface to set it to the same network that your Virtual PC is connected. You can check the IP address of the Virtual PC by login to it's CLI. Use following login information and the command 'ip add' will give you the existing IP configuration.
(If you want to set IP address to Network Interface Card in CentOS you have to enable root)
Thereafter, the virtual environment is ready to connect Cisco router to NMS (LibreNMS) using SNMPv3