H3C Technologies H3C S12500 Series Switches User Manual
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LLDP-MED (media endpoint discovery) TLVs
Basic management TLVs are essential to device management.
Organizationally specific TLVs and LLDP-MED TLVs are used for enhanced device management. They are
defined by standardization or other organizations and are optional to LLDPDUs.
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Basic management TLVs
lists the basic management TLV types. Some of them must be included in every LLDPDU.
Table 25 Basic management TLVs
Type Description
Remarks
Chassis ID
Bridge MAC address of the sending device.
Mandatory.
Port ID
ID of the sending port:
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If the LLDPDU carries LLDP-MED TLVs, the port ID TLV carries
the MAC address of the sending port.
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Otherwise, the port ID TLV carries the port name.
Time To Live
Life of the transmitted information on the receiving device.
End of LLDPDU
Marks the end of the TLV sequence in the LLDPDU.
Port Description
Port description of the sending port.
Optional.
System Name
Assigned name of the sending device.
System Description
Description of the sending device.
System Capabilities
Identifies the primary functions of the sending device and the
enabled primary functions.
Management Address
Management address, and the interface number and object
identifier (OID) associated with the address.
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IEEE 802.1 organizationally specific TLVs
Table 26 IEEE 802.1 organizationally specific TLVs
Type Description
Port VLAN ID
Port VLAN identifier (PVID). An LLDPDU carries only one TLV of this type.
Port And Protocol VLAN ID
Indicates whether the device supports protocol VLANs and, if so, what
VLAN IDs these protocols will be associated with. An LLDPDU can carry
multiple different TLVs of this type.
VLAN Name
Textual name of any VLAN to which the port belongs. An LLDPDU can
carry multiple different TLVs of this type.
Protocol Identity
Indicates protocols supported on the port. An LLDPDU can carry multiple
different TLVs of this type.
DCBX
Data center bridging exchange protocol.
NOTE:
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H3C devices support only receiving protocol identity TLVs.
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Layer 3 Ethernet ports do not support IEEE 802.1 organizationally specific TLVs.
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IEEE 802.3 organizationally specific TLVs