Link Layer Discovery Protocol (LLDP) | 543Management TLVsA Management TLV is an Optional TLVs sub-type. This kind of TLV contains essential managementinformation about the sender. The five types are described in Table 25-2.Organizationally Specific TLVsOrganizationally specific TLVs can be defined by a professional organization or a vendor. They have twomandatory fields (Figure 25-3) in addition to the basic TLV fields (Figure 25-1):• Organizationally Unique Identifier (OUI)—a unique number assigned by the IEEE to an organizationor vendor.• OUI Sub-type—These sub-types indicate the kind of information in the following data field. Thesub-types are determined by the owner of the OUI.Figure 25-3. Organizationally Specific TLVIEEE Organizationally Specific TLVsEight TLV types have been defined by the IEEE 802.1 and 802.3 working groups (Table 25-2) as a basicpart of LLDP; the IEEE OUI is 00-80-C2. You can configure the Dell Force10 system to advertise any orall of these TLVs.Table 25-2. Optional TLV TypesType TLV DescriptionOptional TLVs4 Port description A user-defined alphanumeric string that describes the port. FTOS does notcurrently support this TLV.5 System name A user-defined alphanumeric string that identifies the system.6 System description A user-defined alphanumeric string that describes the system7 System capabilities Identifies the chassis as one or more of the following: repeater, bridge, WLANAccess Point, Router, Telephone, DOCSIS cable device, end station only, orother8 Management address Indicates the network address of the management interface. FTOS does notcurrently support this TLV.IEEE 802.1 Organizationally Specific TLVs127 Port-VLAN ID On Dell Force10 systems, indicates the untagged VLAN to which a portbelongsTLV Type(127)TLV Length OrganizationallyUnique ID(OUI)OrganizationallyDefined Sub-typeOrganizationally SpecificDatafnC0052mp7 bits 9 bits 3 octets 1 octet 0 - 507 octets
