IEEE 802.3by
E507675
IEEE 802.3by is an Ethernet standard that defines 25 Gigabit per second (25GbE) operation over fiber optic and twinaxial copper cabling for high-speed network interconnects.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IEEE 802.3by canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5268535 — 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 802.3by Context triple: [IEEE 802.3cd, relatedTo, IEEE 802.3by]
-
A.
IEEE 802.3bt
IEEE 802.3bt is an Ethernet standard that significantly extends Power over Ethernet capabilities by delivering higher power levels and using all four twisted pairs in a cable to support more demanding devices.
-
B.
IEEE 802.3bu
IEEE 802.3bu is an Ethernet standard that defines single-pair power over data lines, enabling both power and data transmission over a single twisted pair for applications like automotive and industrial networks.
-
C.
IEEE 802.3at
IEEE 802.3at is a Power over Ethernet (PoE+) standard that increases the power available to networked devices beyond the original PoE specification, enabling support for more demanding equipment such as PTZ cameras and wireless access points.
-
D.
IEEE 802.3bs
IEEE 802.3bs is an Ethernet standard that defines 200 Gbit/s and 400 Gbit/s high-speed optical and electrical interfaces for data center and backbone networks.
-
E.
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.
- 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 802.3by Target entity description: IEEE 802.3by is an Ethernet standard that defines 25 Gigabit per second (25GbE) operation over fiber optic and twinaxial copper cabling for high-speed network interconnects.
-
A.
IEEE 802.3bt
IEEE 802.3bt is an Ethernet standard that significantly extends Power over Ethernet capabilities by delivering higher power levels and using all four twisted pairs in a cable to support more demanding devices.
-
B.
IEEE 802.3bu
IEEE 802.3bu is an Ethernet standard that defines single-pair power over data lines, enabling both power and data transmission over a single twisted pair for applications like automotive and industrial networks.
-
C.
IEEE 802.3at
IEEE 802.3at is a Power over Ethernet (PoE+) standard that increases the power available to networked devices beyond the original PoE specification, enabling support for more demanding equipment such as PTZ cameras and wireless access points.
-
D.
IEEE 802.3bs
IEEE 802.3bs is an Ethernet standard that defines 200 Gbit/s and 400 Gbit/s high-speed optical and electrical interfaces for data center and backbone networks.
-
E.
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.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf | Ethernet standard ⓘ |
| belongsToFamily | IEEE 802 standards NERFINISHED ⓘ |
| defines | 25 Gigabit Ethernet NERFINISHED ⓘ |
| definesAbbreviation | 25GbE ⓘ |
| definesApplication |
data center networking
ⓘ
high-speed network interconnects ⓘ server-to-switch interconnects ⓘ switch-to-switch interconnects ⓘ |
| definesCompatibility | Ethernet MAC layer ⓘ |
| definesConnectorUsage | SFP28 form factor modules ⓘ |
| definesDataRate | 25 Gbit/s ⓘ |
| definesForwardErrorCorrection | optional FEC mechanisms ⓘ |
| definesInterfaceType |
copper Ethernet interface
ⓘ
optical Ethernet interface ⓘ |
| definesLaneConfiguration | single-lane 25 Gbit/s operation ⓘ |
| definesLayer |
physical layer (PHY)
ⓘ
reconciliation sublayer aspects ⓘ |
| definesMedium |
multimode fiber
ⓘ
twinaxial copper ⓘ |
| definesOperationOver |
direct attach copper (DAC) cables
ⓘ
fiber optic cabling ⓘ twinaxial copper cabling ⓘ |
| definesPhysicalLayer |
25GBASE-CR
NERFINISHED
ⓘ
25GBASE-CR-S ⓘ 25GBASE-R ⓘ 25GBASE-SR ⓘ 25GBASE-SR-S ⓘ 25GBASE-SR2 ⓘ |
| definesReach |
short-reach copper links
ⓘ
short-reach fiber links ⓘ |
| definesSignalingRate | 25.78125 Gbaud ⓘ |
| goal |
cost-effective 25 Gbit/s Ethernet
ⓘ
efficient server attachment speed ⓘ higher port density compared to 40GbE ⓘ |
| partOf | IEEE 802.3 NERFINISHED ⓘ |
| relatedTo |
IEEE 802.3ba
NERFINISHED
ⓘ
IEEE 802.3bj NERFINISHED ⓘ IEEE 802.3bm NERFINISHED ⓘ IEEE 802.3bq NERFINISHED ⓘ |
| standardizedBy |
IEEE 802.3 Working Group
NERFINISHED
ⓘ
Institute of Electrical and Electronics Engineers NERFINISHED ⓘ |
| supportsUseCase |
cloud data center fabrics
ⓘ
high-density switch ports ⓘ leaf-spine architectures ⓘ top-of-rack switching ⓘ |
| usesEncoding | 64b/66b line coding ⓘ |
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 802.3by Description of subject: IEEE 802.3by is an Ethernet standard that defines 25 Gigabit per second (25GbE) operation over fiber optic and twinaxial copper cabling for high-speed network interconnects.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.