CFM
E1028798
CFM (Connectivity Fault Management) is an Ethernet OAM (Operations, Administration, and Maintenance) protocol defined in IEEE 802.1ag for monitoring, detecting, and isolating connectivity faults in Ethernet networks.
All labels observed (1)
| Label | Occurrences |
|---|---|
| CFM canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T13215526 — 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: CFM Context triple: [IEEE 802.1ag, abbreviation, CFM]
-
A.
CFM
CFM is the abbreviation commonly used for the Council of Foreign Ministers, a diplomatic body composed of the foreign ministers of member states.
-
B.
FMC
FMC is the Spanish acronym for the Federation of Cuban Women, a mass organization in Cuba dedicated to advancing women's rights and gender equality.
-
C.
FMC
The FMC is an independent U.S. federal agency that regulates international ocean transportation to ensure a competitive and reliable maritime shipping system.
-
D.
CFC
CFC is a leading Canadian institution dedicated to advancing the careers of filmmakers, screenwriters, and other media creators through professional training and development programs.
-
E.
CFC
CFC is a common abbreviation for the Collingwood Football Club, a professional Australian rules football team in the Australian Football League.
- 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: CFM Target entity description: CFM (Connectivity Fault Management) is an Ethernet OAM (Operations, Administration, and Maintenance) protocol defined in IEEE 802.1ag for monitoring, detecting, and isolating connectivity faults in Ethernet networks.
-
A.
CFM
CFM is the abbreviation commonly used for the Council of Foreign Ministers, a diplomatic body composed of the foreign ministers of member states.
-
B.
FMC
The FMC is an independent U.S. federal agency that regulates international ocean transportation to ensure a competitive and reliable maritime shipping system.
-
C.
FMC
FMC is the Spanish acronym for the Federation of Cuban Women, a mass organization in Cuba dedicated to advancing women's rights and gender equality.
-
D.
CFC
CFC is a leading Canadian institution dedicated to advancing the careers of filmmakers, screenwriters, and other media creators through professional training and development programs.
-
E.
CFC
CFC is the common abbreviation for Coleraine Football Club, a professional football team based in Coleraine, Northern Ireland.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Ethernet OAM protocol
ⓘ
network protocol ⓘ |
| abbreviationOf | Connectivity Fault Management ⓘ |
| appliesTo |
Ethernet networks
ⓘ
linked to:
Ethernet
|
| category | Operations Administration and Maintenance ⓘ |
| definedInStandard | IEEE 802.1ag ⓘ |
| detects |
loss of continuity
ⓘ
misconnection faults ⓘ unexpected connectivity ⓘ |
| enables |
on-demand fault diagnostics
ⓘ
proactive fault monitoring ⓘ |
| firstStandardizedIn |
IEEE 802.1ag-2007
ⓘ
linked to:
IEEE 802.1ag
|
| fullName | Connectivity Fault Management ⓘ |
| hasConcept |
Maintenance Association
ⓘ
Maintenance Domain ⓘ Maintenance End Point ⓘ Maintenance Intermediate Point ⓘ |
| hasLayeringConcept | maintenance levels ⓘ |
| layer | data link layer ⓘ |
| messageType |
Continuity Check Message
ⓘ
Linktrace Message ⓘ Loopback Message ⓘ |
| monitors | Ethernet connectivity between endpoints ⓘ |
| operatesOver |
VLAN-based Ethernet services
ⓘ
provider backbone networks ⓘ |
| partOf | Ethernet OAM ⓘ |
| protocolType | OAM ⓘ |
| provides |
connectivity check mechanisms
ⓘ
end-to-end Ethernet service monitoring ⓘ fault detection mechanisms ⓘ fault isolation mechanisms ⓘ fault notification mechanisms ⓘ |
| relatedTo |
IEEE 802.1Q
ⓘ
linked to:
IEEE 802.1Q series
ITU-T Y.1731 ⓘ |
| scope |
carrier Ethernet networks
ⓘ
enterprise Ethernet networks ⓘ |
| standardizedBy | IEEE ⓘ |
| supports |
hierarchical OAM domains
ⓘ
multi-operator Ethernet services ⓘ |
| supportsFunction |
connectivity verification
ⓘ
fault localization ⓘ fault management ⓘ |
| usedBy |
enterprise network administrators
ⓘ
network operators ⓘ service providers ⓘ |
| usedFor |
detecting connectivity faults
ⓘ
isolating connectivity faults ⓘ monitoring Ethernet connectivity ⓘ |
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: CFM Description of subject: CFM (Connectivity Fault Management) is an Ethernet OAM (Operations, Administration, and Maintenance) protocol defined in IEEE 802.1ag for monitoring, detecting, and isolating connectivity faults in Ethernet networks.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.