How to draw Layer 2 maps?
OpManager allows you to discover Layer2 devices that are connected to your network and draws a visual representation of the same. This includes a detailed map of all the nodes, interconnected layers and port-to-port connectivity in addition to the interfaces.
To start discovering your layer2 devices, go to Settings > Discovery > Layer2 Discovery. This process can also be initiated from Maps > Layer 2 Maps > Create New.
Enter a name in the Layer2 Map Name section and proceed to type the IPv4 of your seed device in the Router IPv4 Address section.
The seed router will be connected to a vast number of devices. If you wish to restrict your Layer2 Map to a certain IP range, enter their Start IP and End IP and press the ‘+’ icon. You can specify multiple such entries.
OpManager supports multiple discovery protocols. Choose one (or more) that is implemented in your seed router/L3 switch. This will drastically reduce the time taken to discover the devices.
As changes happen to the networks frequently, OpManager allows you to configure an interval (in days) to re-draw the map. For instance, if a change happens once in a week, you can configure OpManager to re-draw the map every seven days.
Set Uplink Dependency:
This option helps in avoiding multiple device-down alerts when the parent device is down. Besides the layer2 discovery window, Uplink Dependency can also be set from the Quick Configuration Wizard.
Choose the SNMP credentials required for the seed router to identify the devices. You can add new credentials from the Add Credentials button.