LLDP Global Configuration 89
7 Link Layer Discovery Protocol (LLDP and LLDP-MED)
LLDP is a standardized discovery protocol defined by IEEE 802.1AB. It allows stations residing on a
LAN to advertise major capabilities, physical descriptions, and management information to other
devices on the network. A network management system (NMS) can access and display this informa-
tion.
LLDP is a one-way protocol; there are no request/response sequences. Information is advertised in
LLDP Protocol Data Units (LLDPDUs) by stations implementing the LLDP transmit function, and LLDP-
DUs are received and processed by stations implementing the receive function. The transmit and
receive functions can be enabled and disabled separately per port. By default, both functions are
enabled on all ports.
LLDP-MED is an extension of the LLDP standard. LLDP-MED uses LLDP's organizationally-specific
Type- Length-Value (TLV) extensions and defines additional TLVs.
LLDP Global Configuration
Use the LLDP Global Configuration page to specify global LLDP parameters and to configure the pro-
tocol on individual ports.
To display the LLDP Global Configuration page, click LLDP > Configuration in the navigation pane.
Figure 60. LLDP Global Configuration Page
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