OSPF
E123434
OSPF (Open Shortest Path First) is a widely used interior gateway routing protocol that employs link-state information to determine the most efficient path for data within an IP network.
All labels observed (5)
| Label | Occurrences |
|---|---|
| OSPF canonical | 9 |
| OSPFv2 | 2 |
| Open Shortest Path First | 2 |
| Dijkstra shortest path first | 1 |
| Link State PDU | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1077211 — 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: OSPF Context triple: [OSPFv3, basedOn, OSPF]
-
A.
OSPFv3
OSPFv3 is the version of the Open Shortest Path First routing protocol designed to operate over IPv6 networks, providing link-state routing and support for IPv6 addressing and features.
-
B.
BGP
BGP (Border Gateway Protocol) is the primary inter-domain routing protocol used to exchange routing information and determine paths between autonomous systems on the global Internet.
-
C.
BGP-4+
BGP-4+ is an enhanced version of the Border Gateway Protocol designed to support routing for IPv6 networks.
-
D.
IS-IS for IPv6
IS-IS for IPv6 is an extension of the IS-IS interior gateway routing protocol that enables dynamic routing and topology discovery in IPv6 networks.
-
E.
OSI protocol suite
The OSI protocol suite is a conceptual networking framework that defines a seven-layer model for how different communication protocols interact to enable data exchange across 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: OSPF Target entity description: OSPF (Open Shortest Path First) is a widely used interior gateway routing protocol that employs link-state information to determine the most efficient path for data within an IP network.
-
A.
OSPFv3
OSPFv3 is the version of the Open Shortest Path First routing protocol designed to operate over IPv6 networks, providing link-state routing and support for IPv6 addressing and features.
-
B.
BGP
BGP (Border Gateway Protocol) is the primary inter-domain routing protocol used to exchange routing information and determine paths between autonomous systems on the global Internet.
-
C.
BGP-4+
BGP-4+ is an enhanced version of the Border Gateway Protocol designed to support routing for IPv6 networks.
-
D.
IS-IS for IPv6
IS-IS for IPv6 is an extension of the IS-IS interior gateway routing protocol that enables dynamic routing and topology discovery in IPv6 networks.
-
E.
OSI protocol suite
The OSI protocol suite is a conceptual networking framework that defines a seven-layer model for how different communication protocols interact to enable data exchange across networks.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
interior gateway protocol
ⓘ
link-state routing protocol ⓘ routing protocol ⓘ |
| administrativeDistanceCisco | 110 ⓘ |
| authenticationMethods |
cryptographic authentication
ⓘ
null authentication ⓘ simple password ⓘ |
| backboneAreaID | 0.0.0.0 ⓘ |
| convergenceType | fast ⓘ |
| definedInRFC |
RFC 2328
ⓘ
RFC 5340 ⓘ |
| designGoal | efficient shortest-path routing within an IP network ⓘ |
| fullName |
Open Shortest Path First
ⓘ
linked to:
OSPF
|
| hasSpecialArea | backbone area ⓘ |
| IPProtocolNumber | 89 ⓘ |
| IPv4Variant |
OSPFv2
ⓘ
linked to:
OSPF
|
| IPv6Variant | OSPFv3 ⓘ |
| loopPreventionMethod | link-state database and SPF calculation ⓘ |
| metricType | cost ⓘ |
| operatesAtLayer | network layer ⓘ |
| replaces | RIP in many enterprise networks ⓘ |
| routerTypes |
area border router (ABR)
ⓘ
autonomous system boundary router (ASBR) ⓘ backbone router ⓘ internal router ⓘ |
| routingDomainType | intra-domain ⓘ |
| scope | single autonomous system ⓘ |
| standardizedBy |
IETF
ⓘ
linked to:
Internet Engineering Task Force
|
| supports |
IPv4
ⓘ
IPv6 ⓘ VLSM ⓘ classless inter-domain routing (CIDR) ⓘ |
| supportsAuthentication | yes ⓘ |
| supportsEqualCostMultipath | yes ⓘ |
| supportsHierarchicalRouting | yes ⓘ |
| supportsNSSA | yes ⓘ |
| supportsStubAreas | yes ⓘ |
| usesAlgorithm |
Dijkstra shortest path first algorithm
ⓘ
linked to:
Dijkstra
|
| usesConcept |
areas
ⓘ
autonomous system ⓘ |
| usesLSA |
AS-external LSA
ⓘ
network LSA ⓘ router LSA ⓘ summary LSA ⓘ |
| usesMulticastAddress |
224.0.0.5
ⓘ
224.0.0.6 ⓘ |
| usesNeighborDiscovery | hello protocol ⓘ |
| usesPort | no TCP or UDP port (protocol number 89) ⓘ |
| usesRoutingType | link-state ⓘ |
| usesTransportProtocol | IP ⓘ |
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: OSPF Description of subject: OSPF (Open Shortest Path First) is a widely used interior gateway routing protocol that employs link-state information to determine the most efficient path for data within an IP network.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: OSPF
linked to: OSPF
linked to: OSPF
subject linked to:
IS‑IS
subject linked to:
Cisco NX‑OS