Enable LLDP, CDP, and Gigamon Discovery on Ports

To enable LLDP, CDP, and Gigamon Discovery on ports:

On the left navigation pane, click , and then select Physical > Nodes.
Click on a node on which you want to enable LLDP and CDP. The Overview page of the node appears.
In the left navigation pane, select Ports > All Ports.
On the Ports page, select the Port ID on which you want to enable LLDP, CDP, and Gigamon Discovery. Click Edit.
Under Ports Discovery, enable the checkbox for the required discovery protocols. Enable all three checkboxes to enable all protocols.
Click OK.
Click Save.
Click the Ports Discovery tab. For each port on which the ports discovery is enabled, the neighbor information is displayed.

Refer to:

Enable Gigamon Discovery on Chassis for enabling Gigamon Discovery protocol at the chassis level.
Enable LLDP and CDP on Chassis for enabling other discovery protocols at the chassis level.
Port Discovery for bulk configuring the discovery protocols on all the ports across the devices in GigaVUE-FM.