LLDP stands for Link Layer Discovery Protocol. It is a standard network discovery protocol used by network devices for advertising their identity, capabilities, and neighbors on a local area network, primarily for the purposes of troubleshooting and network inventory.
LLDP allows a network device to advertise its identification, configuration, and capabilities to neighboring devices that also support LLDP, enabling devices to learn about the topology of a network. This information can include device type, port identification, VLAN membership, and more. LLDP operates at the data link layer (Layer 2) of the OSI model, which means it can function regardless of the Layer 3 addressing scheme.
It's particularly useful in complex networks where understanding the physical and logical connections between devices is crucial for management, troubleshooting, and documentation. Many network devices such as switches, routers, and wireless access points support LLDP.
We've added support for LLDP to ScreenCloud OS (supported in ScreenCloud OS 2.1.14 and above), so you can more easily profile and manage your ScreenCloud OS devices.
Here are the LLDP attributes we've added that are specific to ScreenCloud OS (example values below):
"SysDescr: ScreenCloud OS 2.1.14" - SysDescr notes that the device is running ScreenCloud OS and also notes the ScreenCloud OS version.
Other relevant attributes (example values below):
"ChassisID: mac 20:50:e7:d4:3a:70" - ChassisID notes the device's MAC address. Note that it lists the MAC address for the active network option being used, so either the WiFi or Ethernet MAC address, which are different.
"SysName: SC-firep1-44-46-03.screencloud.tech" - SysName notes the device's hostname (possibly with domain name as well).
"MgmtIP: 192.168.41.40" - MgmtIP notes the device's IP address.
You can use these attributes to target ScreenCloud OS devices on your network and assign certain filtering and actions to them.