Priority-based Flow Control
E1023953
Priority-based Flow Control is an Ethernet link-layer mechanism that enables lossless data transmission for selected traffic classes by pausing specific priorities instead of the entire link.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Priority-based Flow Control canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T13153452 — 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: Priority-based Flow Control Context triple: [IEEE 802.1Qbb, defines, Priority-based Flow Control]
-
A.
Active Queue Management
Active Queue Management is a set of techniques used in network routers and switches to proactively manage packet queues and reduce congestion by intelligently dropping or marking packets before buffers overflow.
-
B.
Time-Sensitive Networking
Time-Sensitive Networking is a set of IEEE 802 Ethernet standards that enable deterministic, low-latency, and highly reliable communication for real-time applications such as industrial automation, automotive, and professional audio/video.
-
C.
Random Early Detection
Random Early Detection is a congestion avoidance mechanism for packet-switched networks that probabilistically drops packets before a queue becomes full to signal and control incipient congestion.
-
D.
IEEE 802.1Qav forwarding and queuing for time‑sensitive streams standard
The IEEE 802.1Qav forwarding and queuing for time‑sensitive streams standard defines mechanisms for prioritized traffic shaping and scheduling in Ethernet networks to support low-latency, time-critical data delivery.
-
E.
IEEE 802.1Qci per‑stream filtering and policing standard
The IEEE 802.1Qci per‑stream filtering and policing standard defines mechanisms for fine-grained traffic control in bridged and time-sensitive networks, enabling per-stream filtering, policing, and protection against misbehaving or malicious traffic.
- 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: Priority-based Flow Control Target entity description: Priority-based Flow Control is an Ethernet link-layer mechanism that enables lossless data transmission for selected traffic classes by pausing specific priorities instead of the entire link.
-
A.
Active Queue Management
Active Queue Management is a set of techniques used in network routers and switches to proactively manage packet queues and reduce congestion by intelligently dropping or marking packets before buffers overflow.
-
B.
Time-Sensitive Networking
Time-Sensitive Networking is a set of IEEE 802 Ethernet standards that enable deterministic, low-latency, and highly reliable communication for real-time applications such as industrial automation, automotive, and professional audio/video.
-
C.
Random Early Detection
Random Early Detection is a congestion avoidance mechanism for packet-switched networks that probabilistically drops packets before a queue becomes full to signal and control incipient congestion.
-
D.
IEEE 802.1Qav forwarding and queuing for time‑sensitive streams standard
The IEEE 802.1Qav forwarding and queuing for time‑sensitive streams standard defines mechanisms for prioritized traffic shaping and scheduling in Ethernet networks to support low-latency, time-critical data delivery.
-
E.
IEEE 802.1Qci per‑stream filtering and policing standard
The IEEE 802.1Qci per‑stream filtering and policing standard defines mechanisms for fine-grained traffic control in bridged and time-sensitive networks, enabling per-stream filtering, policing, and protection against misbehaving or malicious traffic.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
Ethernet link-layer mechanism
ⓘ
flow control mechanism ⓘ |
| abbreviation | PFC ⓘ |
| advantageOver |
IEEE 802.3x link-level PAUSE
ⓘ
linked to:
IEEE 802.3x
global PAUSE ⓘ |
| avoids | packet loss for specific traffic classes ⓘ |
| basedOn |
IEEE 802.3x PAUSE
ⓘ
linked to:
IEEE 802.3x
|
| canCause | head-of-line blocking within a priority ⓘ |
| comparedTo | link-level PAUSE ⓘ |
| configuredBy | network administrators ⓘ |
| configuredWith | per-priority enable or disable settings ⓘ |
| controls | traffic per priority ⓘ |
| definedInStandard | IEEE 802.1Qbb ⓘ |
| deploymentDomain |
data center networks
ⓘ
high-performance computing networks ⓘ storage area networks over Ethernet ⓘ |
| doesNotPause | entire link ⓘ |
| enables | lossless data transmission for selected priorities ⓘ |
| extends |
IEEE 802.3x PAUSE
ⓘ
linked to:
IEEE 802.3x
|
| fieldIncludes |
per-priority pause time
ⓘ
priority enable vector ⓘ |
| frameType | MAC control PAUSE frame with priority bitmap ⓘ |
| goal |
isolate congestion to specific priorities
ⓘ
prevent head-of-line blocking for all traffic ⓘ |
| granularity | per-priority ⓘ |
| interactsWith |
Enhanced Transmission Selection
ⓘ
IEEE 802.1Qau ⓘ IEEE 802.1Qaz ⓘ Quantized Congestion Notification ⓘ |
| operatesAtLayer | Data Link Layer ⓘ |
| operatesOn | full-duplex Ethernet links ⓘ |
| OSIlayer | Layer 2 ⓘ |
| partOf | Data Center Bridging (DCB) suite ⓘ |
| pauses | selected traffic priorities ⓘ |
| priorityRange | 0-7 ⓘ |
| requires | support on both ends of the link ⓘ |
| signaledBy | MAC control frames ⓘ |
| supports | lossless Ethernet for selected traffic classes ⓘ |
| usedFor |
FCoE
ⓘ
Fibre Channel over Ethernet ⓘ
linked to:
FCoE
RDMA over Converged Ethernet ⓘ RoCE ⓘ converged Ethernet fabrics ⓘ iSCSI over Ethernet ⓘ latency-sensitive traffic ⓘ loss-sensitive traffic ⓘ storage traffic over Ethernet ⓘ |
| usedIn | Data Center Bridging ⓘ |
| uses |
802.1p priority values
ⓘ
Class of Service priorities ⓘ per-priority PAUSE frames ⓘ |
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: Priority-based Flow Control Description of subject: Priority-based Flow Control is an Ethernet link-layer mechanism that enables lossless data transmission for selected traffic classes by pausing specific priorities instead of the entire link.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.