Optional Tlvs - Dell Force10 MXL Blade Configuration Manual

TLVs are encapsulated in a frame called an LLDP data unit (LLDPDU)
from one LLDP-enabled device to its LLDP-enabled neighbors. LLDP is a one-way protocol.
LLDP-enabled devices (LLDP agents) can transmit and/or receive advertisements, but they cannot solicit
and do not respond to advertisements.
There are five types of TLVs
except Optional TLVs. You can configure the inclusion of individual Optional TLVs.
Table 18-1. Type, Length, Value (TLV) Types
Type TLV
0 End of LLDPDU
1 Chassis ID
2 Port ID
3 Time to Live
— Optional
Figure 18-2. LLDPDU Frame
Preamble Start Frame
Delimiter

Optional TLVs

The Dell Force10 operating software (FTOS) supports the following optional TLVs:
•
Management
• IEEE 802.1 and 802.3 Organizationally Specific TLVs
• TIA-1057 Organizationally Specific TLVs
314
| Link Layer Discovery Protocol (LLDP)
(Table
Description
Marks the end of an LLDPDU.
An administratively assigned name that identifies the LLDP agent.
An administratively assigned name that identifies a port through which TLVs are sent
and received.
A value that tells the receiving agent how long the information contained in the TLV
Value field is valid.
Includes sub-types of TLVs that advertise specific configuration information. These
sub-types are Management TLVs, IEEE 802.1, IEEE 802.3, and TIA-1057
Organizationally Specific TLVs.
Destination MAC Ethernet Type
Source MAC
(01:80:C2:00:00:0E) (0x88CC)
TLV 1 TLV 2 TLV 3
Chassis ID Port ID Port Description
TLVs
18-1). All types are mandatory in the construction of an LLDPDU
LLDPDU
TLV 4 TLV 5
System Capabilities
System Name System Description
(Figure 18-2), which is transmitted
FCS
Padding
TLV 6 TLV 7 TLV 127
Management Addr Organizationally Specific
TLV 0
End of LLDPDU
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