Table 49. Type, Length, Value (TLV) TypesType TLV Description0 End of LLDPDU Marks the end of an LLDPDU.1 Chassis ID An administratively assignedname that identifies the LLDPagent.2 Port ID An administratively assignedname that identifies a portthrough which TLVs are sent andreceived.3 Time to Live An administratively assignedname that identifies a portthrough which TLVs are sent andreceived.— Optional Includes sub-types of TLVs thatadvertise specific configurationinformation. These sub-types areManagement TLVs, IEEE 802.1,IEEE 802.3, and TIA-1057Organizationally Specific TLVs.Figure 70. LLDPDU FrameOptional TLVsThe Dell Networking OS supports these optional TLVs: management TLVs, IEEE 802.1 and 802.3organizationally specific TLVs, and TIA-1057 organizationally specific TLVs.Management TLVsA management TLV is an optional TLVs sub-type. This kind of TLV contains essential managementinformation about the sender.Organizationally Specific TLVsA professional organization or a vendor can define organizationally specific TLVs. They have twomandatory fields (as shown in the following illustration) in addition to the basic TLV fields.Link Layer Discovery Protocol (LLDP) 527
