To create a network monitor:
- Log on to the web portal as a user who has the necessary rights to create monitors.
- Click the Components tab and click Add Component in the top left.
- From the Category drop-down, select Network Monitors.
- Give it a name and description, click Create.
- In the SNMP Settings section at the bottom of the component creation screen, click the green + sign to add a new SNMP monitoring entry. You will see a dialogue box like this one:
- Give the SNMP monitoring entry an appropriate name (e.g. “FE0/0 port utilisation on Cisco 2950”).
- In the OID section, enter the OID for the setting or value that you want to monitor (e.g. 220.127.116.11.18.104.22.168.1.10).
- In the Operator and Default Value boxes, enter the trigger for raising an alert (e.g. “Greater Than – 3404696928” or “Less than – 95”).
- Finally, give a meaningful description which will help you or your colleagues to remember exactly what this monitor is to be used for.
- Click Add to add this specific setting to the network monitor.
Repeat steps 5 to 10 for each OID that you want to monitor on your devices. This allows you to build a single monitor per device type that is querying multiple SNMP values.
- A switch monitor that checks bandwidth usage, ports that are unexpectedly “down”, CPU temperature, and changes to the firmware version.
- A virtualisation host monitor that checks for CPU and memory usage.
- A network attached storage monitor, checking the disk space, temperature and uptime.
You can then apply those monitors to all the matching devices without having to reconfigure SNMP monitoring every time.