Reference Guide

570 | Link Layer Discovery Protocol
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LLDP-MED Capabilities TLV
The LLDP-MED Capabilities TLV communicates the types of TLVs that the endpoint device and the
network connectivity device support. LLDP-MED network connectivity devices must transmit the
Network Policies TLV.
• The value of the LLDP-MED Capabilities field in the TLV is a 2 octet bitmap (Figure 29-4), each bit
represents an LLDP-MED capability (Table 29-4, "FTOS LLDP-MED Capabilities," in Link Layer
Discovery Protocol).
• The possible values of the LLDP-MED Device Type is listed in Table 29-5, "LLDP-MED Device
Types," in Link Layer Discovery Protocol. The Dell Force10 system is a Network Connectivity
device, which is Type 4.
When you enable LLDP-MED in FTOS (using the command
advertise med) the system begins
transmitting this TLV.
Figure 29-4. LLDP-MED Capabilities TLV
Table 29-4. FTOS LLDP-MED Capabilities
Bit Position TLV FTOS Support
0 LLDP-MED Capabilities Yes
1 Network Policy Yes
2 Location Identification Yes
3 Extended Power via MDI-PSE Yes
4 Extended Power via MDI-PD No
5 Inventory No
6-15 reserved No
Table 29-5. LLDP-MED Device Types
Value Device Type
0 Type Not Defined
1 Endpoint Class 1
2 Endpoint Class 2
3 Endpoint Class 3
4 Network Connectivity
5-255 Reserved
TLV Type
(127)
TLV Length
(7)
Organizationally
Unique ID
(00-12-BB)
Organizationally
Defined Sub-type
(1)
LLDP-MED Capabilites
(00000000 00001111)
fnC0053m
p
7 bits
9 bits
3 octets
1 octet 2 octets
LLDP-MED Device
Type
(4)
1 octet