IEEE 802.3 Clause 28
E80873
IEEE 802.3 Clause 28 is the section of the Ethernet standard that defines the Auto-Negotiation mechanism used by twisted-pair Ethernet PHYs to automatically select link parameters such as speed and duplex.
All labels observed (2)
| Label | Occurrences |
|---|---|
| IEEE 802.3 Clause 28 canonical | 1 |
| IEEE 802.3u Clause 28 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T637942 — 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: IEEE 802.3 Clause 28 Context triple: [10GBASE-T, autoNegotiationStandard, IEEE 802.3 Clause 28]
-
A.
IEEE 802.3an-2006
IEEE 802.3an-2006 is an Ethernet standard that defines 10GBASE-T, enabling 10 Gigabit Ethernet transmission over twisted-pair copper cabling.
-
B.
IEEE 802.3ba
IEEE 802.3ba is an Ethernet standard that defines 40 Gigabit and 100 Gigabit Ethernet for high-speed data transmission over fiber and copper media.
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C.
IEEE 802.24
IEEE 802.24 is an IEEE working group focused on developing and coordinating standards and guidance for vertical applications of IEEE 802 networking technologies, such as smart grid, smart cities, and industrial IoT.
-
D.
IEEE 802.18
IEEE 802.18 is the Radio Regulatory Technical Advisory Group within the IEEE 802 standards community that focuses on spectrum and regulatory issues affecting wireless LAN and MAN technologies.
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E.
IEEE 802.1Qed
IEEE 802.1Qed is a specific amendment within the IEEE 802.1 family of networking standards that defines enhancements related to bridged local area 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: IEEE 802.3 Clause 28 Target entity description: IEEE 802.3 Clause 28 is the section of the Ethernet standard that defines the Auto-Negotiation mechanism used by twisted-pair Ethernet PHYs to automatically select link parameters such as speed and duplex.
-
A.
IEEE 802.3an-2006
IEEE 802.3an-2006 is an Ethernet standard that defines 10GBASE-T, enabling 10 Gigabit Ethernet transmission over twisted-pair copper cabling.
-
B.
IEEE 802.3ba
IEEE 802.3ba is an Ethernet standard that defines 40 Gigabit and 100 Gigabit Ethernet for high-speed data transmission over fiber and copper media.
-
C.
IEEE 802.24
IEEE 802.24 is an IEEE working group focused on developing and coordinating standards and guidance for vertical applications of IEEE 802 networking technologies, such as smart grid, smart cities, and industrial IoT.
-
D.
IEEE 802.18
IEEE 802.18 is the Radio Regulatory Technical Advisory Group within the IEEE 802 standards community that focuses on spectrum and regulatory issues affecting wireless LAN and MAN technologies.
-
E.
IEEE 802.1Qed
IEEE 802.1Qed is a specific amendment within the IEEE 802.1 family of networking standards that defines enhancements related to bridged local area networks.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | Ethernet standard clause ⓘ |
| appliesTo | twisted-pair Ethernet PHYs ⓘ |
| associatedWith | MDI-based twisted-pair media ⓘ |
| defines |
Auto-Negotiation advertisement register
ⓘ
Auto-Negotiation control register ⓘ Auto-Negotiation expansion register ⓘ Auto-Negotiation link control functions ⓘ Auto-Negotiation link partner ability register ⓘ Auto-Negotiation mechanism ⓘ Auto-Negotiation next page registers ⓘ Auto-Negotiation state machine ⓘ Auto-Negotiation status register ⓘ duplex mode negotiation ⓘ exchange of capabilities between link partners ⓘ fault indication via Auto-Negotiation messages ⓘ jabber and link integrity checks related to Auto-Negotiation ⓘ link failure detection conditions for Auto-Negotiation ⓘ link partner ability resolution rules ⓘ link speed negotiation ⓘ parallel detection function ⓘ procedures for automatic link parameter selection ⓘ restarting Auto-Negotiation procedures ⓘ timing requirements for Auto-Negotiation exchanges ⓘ |
| notCovers |
Auto-Negotiation for optical fiber PHYs
ⓘ
MAC layer protocols ⓘ |
| objective |
to allow automatic configuration without manual setting of speed and duplex
ⓘ
to enable multi-vendor interoperability for link setup ⓘ |
| partOf |
IEEE 802.3
ⓘ
linked to:
IEEE 802.3 Ethernet standard
|
| referenceInPractice | “Clause 28 Auto-Negotiation” in Ethernet specifications ⓘ |
| relatedTo |
Ethernet link segment initialization
ⓘ
Ethernet physical layer (PHY) ⓘ
linked to:
OSI physical layer
|
| scope | Auto-Negotiation on twisted-pair physical media only ⓘ |
| specifies |
base link code word format
ⓘ
management registers for Auto-Negotiation ⓘ next page message format ⓘ priority resolution function for advertised abilities ⓘ |
| standardizedBy | IEEE ⓘ |
| supports |
negotiation of 100BASE-TX capabilities
ⓘ
negotiation of 10BASE-T capabilities ⓘ negotiation of full-duplex operation ⓘ negotiation of half-duplex operation ⓘ |
| usedBy |
Ethernet network interface controllers
ⓘ
Ethernet repeaters that support Auto-Negotiation ⓘ Ethernet switches ⓘ |
| uses |
Fast Link Pulses
ⓘ
link code words ⓘ parallel detection when link partner does not support Auto-Negotiation ⓘ |
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: IEEE 802.3 Clause 28 Description of subject: IEEE 802.3 Clause 28 is the section of the Ethernet standard that defines the Auto-Negotiation mechanism used by twisted-pair Ethernet PHYs to automatically select link parameters such as speed and duplex.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: IEEE 802.3 Clause 28