158 | Link Layer Discovery Protocol (LLDP) Commands
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Figure 8-54 presents a diagram of the basic LLDP packet sent to a multicast MAC address. The
Ethertype is set to 88cc.
Figure 8-54. TLV Packet Overview
Figure 8-55 shows a more detailed diagram of the TLV sequence in the LLDPDU section of the LLDP
packet, showing how TLVs are strung together in the payload of the LLDP PDU:
Figure 8-55. LLDPDU Section of the Packet
Figure 8-56 shows the structure of each TLV section, for example the Chassis ID TLV. The TLV Type
and TLV Length constitute the TLV header, followed by the TLV information string.
Figure 8-56. LLDPDU Section of the LLDP Packet
SFTOS 2.5.1 supports the sending of the following optional TLVs:
• Port Description
• System Name
• System Description
• System Capabilities
LLDP Commands
The commands in this chapter are:
• clear lldp neighbors on page 159
• clear lldp counters on page 159
• lldp hello on page 160
• lldp mode (global) on page 160
• lldp mode (interface) on page 161
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