Concept Guide

Example of debug lldp Command Output with Unrecognized Reserved and Organizational Specic LLDP TLVs
The following is an example of LLDPDU with both (Reserved and Organizational specic) unrecognized TLVs.
DellEMC#Dec 4 22:38:27 : Received LLDP pkt on GigabitEthernet 1/47 of length 204 :
Dec 4 22:38:27 : Packet dump:
Dec 4 22:38:27 : 01 80 c2 00 00 0e 00 a0 c9 00 00 03 81 00 00 00
Dec 4 22:38:27 : 88 cc 02 07 04 00 a0 c9 00 00 01 04 02 05 54 06
Dec 4 22:38:27 : 02 01 2c fe 05 aa bb cc 04 61 fa 01 40 00 00 00
Dec 4 22:38:28 : 00 00 00 00 00 00 00 00 c6 0f ba 27
Dec 4 22:38:28 : TLV: Chassis ID, Len: 7, Subtype: Mac address (4) Value: 00:a0:c9:00:00:01
Dec 4 22:38:29 : TLV: Port ID, Len: 2, Subtype: Interface name (5) Value: T
Dec 4 22:38:29 : TLV: TTL, Len: 2, Value: 300
Dec 4 22:38:29 : TLV: UNKNOWN TLV, ORG_SPEC[aa-bb-cc, 4], Len: 1, Value:a
Dec 4 22:38:29 : aa bb cc 04 61
Dec 4 22:38:29 : 40
Dec 4 22:38:29 : TLV: UNKNOWN TLV, Type: 125 Len: 1, Value: @
Dec 4 22:38:29 : TLV: ENDOFPDU, Len: 0
Relevant Management Objects
Dell EMC Networking OS supports all IEEE 802.1AB MIB objects.
The following tables list the objects associated with:
received and transmitted TLVs
the LLDP conguration on the local agent
IEEE 802.1AB Organizationally Specic TLVs
received and transmitted LLDP-MED TLVs
Table 40. LLDP
Conguration MIB Objects
MIB Object
Category
LLDP Variable LLDP MIB Object Description
LLDP
Conguration
adminStatus lldpPortCongAdminStatus Whether you enable the local LLDP
agent for transmit, receive, or both.
msgTxHold lldpMessageTxHoldMultiplier Multiplier value.
msgTxInterval lldpMessageTxInterval Transmit Interval value.
rxInfoTTL lldpRxInfoTTL Time to live for received TLVs.
txInfoTTL lldpTxInfoTTL Time to live for transmitted TLVs.
Basic TLV
Selection
mibBasicTLVsTxEnable lldpPortCongTLVsTxEnable Indicates which management TLVs
are enabled for system ports.
mibMgmtAddrInstanceTxEnable lldpManAddrPortsTxEnable The management addresses dened
for the system and the ports through
which they are enabled for
transmission.
LLDP Statistics statsAgeoutsTotal lldpStatsRxPortAgeoutsTotal Total number of times that a
neighbor’s information is deleted on
the local system due to an rxInfoTTL
timer expiration.
statsFramesDiscardedTotal lldpStatsRxPortFramesDiscardedTotal Total number of LLDP frames
received then discarded.
Link Layer Discovery Protocol (LLDP) 495