API Guide

system ID and uses the system priority during negotiation with other devices. A higher system priority
value means a lower priority. The system ID is different for each device.
Example
OS10# show lacp system-identifier
Actor System ID: Priority 32768, Address 90:b1:1c:f4:9b:8a
Supported
Releases
10.2.0E or later
Link Layer Discovery Protocol
Dell EMC SmartFabric OS10 supports:
● Link Layer Discovery protocol (LLDP)
● Link Layer Discovery Protocol — Media Endpoint Discovery (LLDP-MED)
LLDP is a one-way protocol that enables network devices on a local area network (LAN) to discover and advertise its
capabilities to adjacent LAN devices. LLDP devices advertise its capabilities in the form of LLDP data units (LLDPDUs).
LLDP-MED is an LLDP enhancement that enables endpoint devices and network connected devices to advertise their
characteristics and configuration information.
LLDP-MED network connected devices such as switches provide access to the IEEE 802-based LAN infrastructure for LLDP-
MED endpoint devices, such as IP phones. OS10 switch acts as an LLDP-MED network connected device.
● By default, LLDP and LLDP-MED are enabled on the interfaces.
NOTE: You cannot configure LLDP-MED on the management interface.
● An LLDP-enabled interface supports up to eight neighbors. OS10 switch supports a maximum of 250 neighbors per system.
● OS10 switches periodically transmit LLDPDUs. The default transmission interval is 30 seconds.
● OS10 switches receive LLDPDU information from a neighbor. The information expires after a specific amount of time, called
time to live (TTL). The default TTL value is 120 seconds.
● OS10 switches allow LLDPDUs in spanning-tree blocked ports.
● OS10 switches do not allow LLDPDUs in 802.1X-controlled ports until the connected device is authenticated.
LLDPDU is a sequence of type, length, and value (TLV).
● Type — Contains the TLV type.
● Length — Size of the value field, in bytes.
● Value — Contains the capability information of the device to be advertised.
LLDPDUs include mandatory and optional TLVs. Each LLDPDU starts with three mandatory TLVs, zero or more optional TLVs,
and end of LLDPDU TLV.
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Layer 2