LSP PDU
E538272
LSP PDU (Link State PDU) is a type of routing protocol message used in link-state routing, particularly in IS-IS, to distribute information about network topology among routers.
All labels observed (2)
| Label | Occurrences |
|---|---|
| LSP PDU canonical | 1 |
| Link State Protocol Data Unit | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5678750 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: LSP PDU Context triple: [ISO 10589, definesPDUType, LSP PDU]
-
A.
LPPD
LPPD is the ICAO airport code for João Paulo II Airport, the main international airport serving Ponta Delgada in the Azores, Portugal.
-
B.
LDP
LDP is a common abbreviation for the Liberal Democratic Party, a major political party name used in several countries, most prominently Japan.
-
C.
OFPP
OFPP is a U.S. federal office within the Office of Management and Budget that provides overall direction for government-wide procurement policies and practices.
-
D.
IEEE 802.2
IEEE 802.2 is a legacy IEEE networking standard that defines the Logical Link Control (LLC) sublayer of the data link layer for local and metropolitan area networks.
-
E.
IEEE 802.1ag
IEEE 802.1ag is an Ethernet networking standard that defines Connectivity Fault Management (CFM) mechanisms for monitoring, detecting, and troubleshooting faults in Ethernet networks.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: LSP PDU Target entity description: LSP PDU (Link State PDU) is a type of routing protocol message used in link-state routing, particularly in IS-IS, to distribute information about network topology among routers.
-
A.
LPPD
LPPD is the ICAO airport code for João Paulo II Airport, the main international airport serving Ponta Delgada in the Azores, Portugal.
-
B.
LDP
LDP is a common abbreviation for the Liberal Democratic Party, a major political party name used in several countries, most prominently Japan.
-
C.
OFPP
OFPP is a U.S. federal office within the Office of Management and Budget that provides overall direction for government-wide procurement policies and practices.
-
D.
IEEE 802.2
IEEE 802.2 is a legacy IEEE networking standard that defines the Logical Link Control (LLC) sublayer of the data link layer for local and metropolitan area networks.
-
E.
IEEE 802.1ag
IEEE 802.1ag is an Ethernet networking standard that defines Connectivity Fault Management (CFM) mechanisms for monitoring, detecting, and troubleshooting faults in Ethernet networks.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
IS-IS protocol data unit
ⓘ
link-state routing message ⓘ routing protocol message ⓘ |
| associatedWithAlgorithm |
Dijkstra shortest path first
ⓘ
linked to:
Dijkstra's shortest path algorithm
|
| carriesInformationAbout |
adjacencies
ⓘ
metrics ⓘ reachable network prefixes ⓘ router links ⓘ |
| definedInStandard | ISO/IEC 10589 ⓘ |
| distributionMechanism | flooding ⓘ |
| encodesInformationUsing | TLVs ⓘ |
| fullName |
Link State Protocol Data Unit
ⓘ
linked to:
LSP PDU
|
| hasField |
ID length
ⓘ
LSP ID ⓘ PDU length ⓘ PDU type ⓘ TLVs ⓘ checksum ⓘ flags ⓘ remaining lifetime ⓘ sequence number ⓘ version ⓘ |
| hasVariant |
Level-1 LSP PDU
ⓘ
Level-2 LSP PDU ⓘ |
| integrityMechanism | checksum ⓘ |
| layer | network layer control plane ⓘ |
| lifetimeControlledBy | remaining lifetime field ⓘ |
| purpose |
distribute link-state information
ⓘ
distribute network topology information ⓘ support route computation ⓘ |
| relatedPDUType |
CSNP PDU
ⓘ
IIH PDU ⓘ PSNP PDU ⓘ |
| reliabilityMechanism | sequence number based flooding ⓘ |
| scope |
IS-IS area
ⓘ
IS-IS level ⓘ |
| supportsFeature |
IPv4 routing information
ⓘ
IPv6 routing information ⓘ multi-topology IS-IS ⓘ |
| topologyModel | link-state database ⓘ |
| usedBy | IS-IS routers ⓘ |
| usedFor |
SPF route calculation
ⓘ
building link-state database ⓘ |
| usedInEnvironment |
IP routing
ⓘ
MPLS control plane ⓘ |
| usedInProtocol |
IS-IS
ⓘ
linked to:
IS‑IS
|
| usedInRoutingType | link-state routing ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: LSP PDU Description of subject: LSP PDU (Link State PDU) is a type of routing protocol message used in link-state routing, particularly in IS-IS, to distribute information about network topology among routers.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.