Link Layer Discovery Protocol sensor

The Link Layer Discovery Protocol sensor uses the LLDP MIB to discover Layer 2 segments on the network. The LldpSensor discovers lldpLocalSystemData , lldpLocPortTable and lldpRemTable information and builds the local interface for the peer devices. This interface is used to build the segment.

Restriction: To make an initial connection, the sensor requires SNMP version 1.

Sensor name that is used in the GUI and logs

LldpSensor

Object identifiers (OIDs) that are used

The sensor uses the following high-level OIDs to retrieve the attributes:
  • lldpLocChassisIdSubtype : .1.0.8802.1.1.2.1.3.1
  • lldpLocChassisId : .1.0.8802.1.1.2.1.3.2
  • lldpLocSysName : .1.0.8802.1.1.2.1.3.3
  • lldpLocPortNum: .1.0.8802.1.1.2.1.3.7.1.1
  • lldpLocPortIdSubtype: .1.0.8802.1.1.2.1.3.7.1.2
  • lldpLocPortId: .1.0.8802.1.1.2.1.3.7.1.3
  • lldpLocPortDesc: .1.0.8802.1.1.2.1.3.7.1.4
  • lldpRemTableIdx: .1.0.8802.1.1.2.1.4.1.1.1
  • lldpRemChassisIdSubtype: .1.0.8802.1.1.2.1.4.1.1.4
  • lldpRemChassisId: .1.0.8802.1.1.2.1.4.1.1.5
  • lldpRemPortIdSubtype: .1.0.8802.1.1.2.1.4.1.1.6
  • lldpRemPortId: .1.0.8802.1.1.2.1.4.1.1.7
  • lldpRemPortDesc: .1.0.8802.1.1.2.1.4.1.1.8

Model objects created

The sensor creates the following model objects:
  • net.L2Interface
  • net.Segment
  • sys.ComputerSystem