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Link Layer Discovery Protocol | 585
Optional TLVs
FTOS supports the following optional TLVs:
•
Management TLVs
• IEEE 802.1 and 802.3 Organizationally Specific TLVs
• TIA-1057 Organizationally Specific TLVs
Management TLVs
A Management TLV is an Optional TLVs sub-type. This kind of TLV contains essential management
information about the sender. The five types are described in Table 26-2.
Organizationally Specific TLVs
Organizationally specific TLVs can be defined by a professional organization or a vendor. They have two
mandatory fields (Figure 26-3) in addition to the basic TLV fields (Figure 26-1):
• Organizationally Unique Identifier (OUI)—a unique number assigned by the IEEE to an organization
or vendor.
• OUI Sub-type—These sub-types indicate the kind of information in the following data field. The
sub-types are determined by the owner of the OUI.
Figure 26-3. Organizationally Specific TLV
IEEE Organizationally Specific TLVs
Eight TLV types have been defined by the IEEE 802.1 and 802.3 working groups (Table 26-2) as a basic
part of LLDP; the IEEE OUI is 00-80-C2. You can configure the Dell Force10 system to advertise any or
all of these TLVs.
Table 26-2. Optional TLV Types
Type TLV Description
Optional TLVs
4 Port description A user-defined alphanumeric string that describes the port. FTOS does not
currently 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 system
TLV Type
(127)
TLV Length
Organizationally
Unique ID
(OUI)
Organizationally
Defined Sub-type
Organizationally Specific
Data
fnC0052m
p
7 bits
9 bits
3 octets
1 octet 0 - 507 octets