IEEE 802.1ah
E162317
IEEE 802.1ah is an Ethernet networking standard, often called Provider Backbone Bridges (PBB), that enables scalable, MAC-in-MAC encapsulation for carrier-grade layer 2 networks.
All labels observed (2)
| Label | Occurrences |
|---|---|
| IEEE 802.1ah canonical | 5 |
| IEEE 802.1ah PBB | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1404989 — 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 802.1ah Context triple: [Provider Bridging, relatedTo, IEEE 802.1ah]
-
A.
IEEE 802.1AB
IEEE 802.1AB is a networking standard that defines the Link Layer Discovery Protocol (LLDP) for advertising and discovering device identity and capabilities on IEEE 802 LANs.
-
B.
IEEE 802.1AX
IEEE 802.1AX is an IEEE networking standard that defines link aggregation, enabling multiple physical network links to be combined into a single logical link for increased bandwidth and redundancy.
-
C.
IEEE 802.1Qfh
IEEE 802.1Qfh is an Ethernet networking standard within the IEEE 802.1 family that specifies mechanisms for enhanced path control and forwarding in bridged networks.
-
D.
IEEE 802.1Qeh
IEEE 802.1Qeh is an Ethernet networking standard within the IEEE 802.1 family that specifies mechanisms for enhanced queuing and traffic management in bridged and virtualized networks.
-
E.
IEEE 802.1Qel
IEEE 802.1Qel is an Ethernet networking standard that defines enhancements for scheduled traffic and latency management in time-sensitive 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 802.1ah Target entity description: IEEE 802.1ah is an Ethernet networking standard, often called Provider Backbone Bridges (PBB), that enables scalable, MAC-in-MAC encapsulation for carrier-grade layer 2 networks.
-
A.
IEEE 802.1AB
IEEE 802.1AB is a networking standard that defines the Link Layer Discovery Protocol (LLDP) for advertising and discovering device identity and capabilities on IEEE 802 LANs.
-
B.
IEEE 802.1AX
IEEE 802.1AX is an IEEE networking standard that defines link aggregation, enabling multiple physical network links to be combined into a single logical link for increased bandwidth and redundancy.
-
C.
IEEE 802.1Qfh
IEEE 802.1Qfh is an Ethernet networking standard within the IEEE 802.1 family that specifies mechanisms for enhanced path control and forwarding in bridged networks.
-
D.
IEEE 802.1Qeh
IEEE 802.1Qeh is an Ethernet networking standard within the IEEE 802.1 family that specifies mechanisms for enhanced queuing and traffic management in bridged and virtualized networks.
-
E.
IEEE 802.1Qel
IEEE 802.1Qel is an Ethernet networking standard that defines enhancements for scheduled traffic and latency management in time-sensitive networks.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Ethernet networking standard
ⓘ
IEEE 802.1 standard ⓘ Provider Backbone Bridges standard ⓘ |
| aimsTo |
enhance traffic engineering in provider networks
ⓘ
improve scalability of Ethernet networks ⓘ separate customer and provider MAC addressing ⓘ support multiple tenants over a shared backbone ⓘ |
| alsoKnownAs |
MAC-in-MAC
ⓘ
PBB ⓘ Provider Backbone Bridges ⓘ
linked to:
Provider Bridging
|
| category |
Provider Backbone Bridging
ⓘ
linked to:
Provider Bridging
|
| defines |
MAC-in-MAC encapsulation
ⓘ
Provider Backbone Bridges ⓘ
linked to:
Provider Bridging
|
| enables |
large numbers of virtual services
ⓘ
multi-tenant Ethernet VPN-like services ⓘ transparent LAN services over provider backbones ⓘ |
| encapsulates |
C-MAC addresses within B-MAC addresses
ⓘ
customer MAC frames inside backbone MAC frames ⓘ |
| extends |
IEEE 802.1ad
ⓘ
Provider Bridges ⓘ |
| focusesOn | scalable Ethernet service delivery ⓘ |
| introduces |
backbone core bridges
ⓘ
backbone edge bridges ⓘ |
| layer | Data link layer ⓘ |
| maintainedBy | IEEE 802.1 Working Group ⓘ |
| OSIlayer | Layer 2 ⓘ |
| partOf |
IEEE 802.1 family of standards
ⓘ
linked to:
IEEE 802.1 standards family
|
| provides |
enhanced MAC address scalability
ⓘ
hierarchical Ethernet forwarding ⓘ isolation between customer networks ⓘ |
| publishedBy | IEEE ⓘ |
| region | international ⓘ |
| relatedTo |
IEEE 802.1Q
ⓘ
linked to:
IEEE 802.1Q series
VLAN tagging ⓘ |
| standardizes |
frame formats for provider backbone bridges
ⓘ
operations for provider backbone bridges ⓘ |
| status | published standard ⓘ |
| supports |
carrier-grade Ethernet services
ⓘ
large-scale Layer 2 networks ⓘ service provider backbone networks ⓘ |
| technologyDomain |
Ethernet
ⓘ
computer networking ⓘ |
| usedIn |
carrier Ethernet networks
ⓘ
metro Ethernet networks ⓘ service provider backbone networks ⓘ |
| uses |
I-SID (Service Instance Identifier)
ⓘ
MAC-in-MAC encapsulation ⓘ backbone MAC addresses ⓘ service instance identifiers ⓘ |
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 802.1ah Description of subject: IEEE 802.1ah is an Ethernet networking standard, often called Provider Backbone Bridges (PBB), that enables scalable, MAC-in-MAC encapsulation for carrier-grade layer 2 networks.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.