I-SID (Service Instance Identifier)
E634603
I-SID (Service Instance Identifier) is a 24-bit identifier used in Provider Backbone Bridges (PBB) networks to uniquely distinguish and virtualize individual Ethernet services across a shared backbone infrastructure.
All labels observed (1)
| Label | Occurrences |
|---|---|
| I-SID (Service Instance Identifier) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7000247 — 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: I-SID (Service Instance Identifier) Context triple: [IEEE 802.1ah, uses, I-SID (Service Instance Identifier)]
-
A.
Information Systems and Services (ISS)
Information Systems and Services (ISS) is a branch of the UK military responsible for delivering and managing defence-wide information, communications, and IT services.
-
B.
Network Slice Instance
A Network Slice Instance is a logically isolated, end-to-end 5G network partition tailored to specific service or customer requirements, providing dedicated resources and performance characteristics.
-
C.
I‑CSCF
I‑CSCF (Interrogating Call Session Control Function) is a key SIP server in the IP Multimedia Subsystem that handles incoming session setup requests and routes them to the appropriate network entities.
-
D.
SIMID
SIMID (Secure Interactive Media Interface Definition) is a digital advertising standard that defines how interactive video ads communicate and operate within video players across platforms.
-
E.
ISA
ISA is the acronym for the International Seabed Authority, the intergovernmental organization responsible for regulating mineral-related activities in the international seabed area beyond national jurisdiction.
- 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: I-SID (Service Instance Identifier) Target entity description: I-SID (Service Instance Identifier) is a 24-bit identifier used in Provider Backbone Bridges (PBB) networks to uniquely distinguish and virtualize individual Ethernet services across a shared backbone infrastructure.
-
A.
Information Systems and Services (ISS)
Information Systems and Services (ISS) is a branch of the UK military responsible for delivering and managing defence-wide information, communications, and IT services.
-
B.
Network Slice Instance
A Network Slice Instance is a logically isolated, end-to-end 5G network partition tailored to specific service or customer requirements, providing dedicated resources and performance characteristics.
-
C.
I‑CSCF
I‑CSCF (Interrogating Call Session Control Function) is a key SIP server in the IP Multimedia Subsystem that handles incoming session setup requests and routes them to the appropriate network entities.
-
D.
SIMID
SIMID (Secure Interactive Media Interface Definition) is a digital advertising standard that defines how interactive video ads communicate and operate within video players across platforms.
-
E.
ISA
ISA is the acronym for the International Seabed Authority, the intergovernmental organization responsible for regulating mineral-related activities in the international seabed area beyond national jurisdiction.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
IEEE 802.1ah concept
ⓘ
Service Instance Identifier ⓘ network identifier ⓘ |
| associatedWith |
B-MAC forwarding
ⓘ
backbone MAC-in-MAC encapsulation ⓘ |
| belongsToLayer | data link layer ⓘ |
| bitLength | 24 bits ⓘ |
| category | Ethernet service identifier ⓘ |
| definedBy |
IEEE 802.1 working group
ⓘ
linked to:
IEEE 802.1 Working Group
|
| distinguishes | individual Ethernet services ⓘ |
| enables |
isolation of customer traffic
ⓘ
service-based forwarding in PBB ⓘ |
| encapsulatedWithin | PBB service encapsulation header ⓘ |
| fieldType | service instance field ⓘ |
| granularity | per service instance ⓘ |
| identifierSpace | 24-bit service instance space ⓘ |
| independentOf |
customer VLAN IDs
ⓘ
customer addressing ⓘ |
| mappedFrom | customer service identifiers ⓘ |
| maxNumberOfValues | 16777216 ⓘ |
| operatesOver | shared provider backbone infrastructure ⓘ |
| partOf | PBB service model ⓘ |
| purpose |
to uniquely identify Ethernet services in a provider backbone
ⓘ
to virtualize individual Ethernet services over a shared backbone ⓘ |
| relatedTo |
B-VID
ⓘ
VLAN ID ⓘ backbone VLAN ⓘ |
| role | service identifier in PBB ⓘ |
| scope | provider backbone domain ⓘ |
| standardizedIn |
IEEE 802.1Q
ⓘ
linked to:
IEEE 802.1Q series
IEEE 802.1Qay ⓘ IEEE 802.1ah ⓘ |
| supports |
large number of Ethernet services
ⓘ
scalable service multiplexing ⓘ |
| usedBy |
backbone edge bridges
ⓘ
provider edge bridges ⓘ |
| usedFor |
VPN-like Ethernet services
ⓘ
multi-tenant Ethernet services ⓘ service separation in provider networks ⓘ traffic segregation per customer service ⓘ |
| usedIn |
PBB networks
ⓘ
Provider Backbone Bridges ⓘ
linked to:
Provider Bridging
|
| usedInContextOf |
carrier Ethernet
ⓘ
metro Ethernet networks ⓘ |
| usedWith |
B-MAC addresses
ⓘ
backbone VLAN 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: I-SID (Service Instance Identifier) Description of subject: I-SID (Service Instance Identifier) is a 24-bit identifier used in Provider Backbone Bridges (PBB) networks to uniquely distinguish and virtualize individual Ethernet services across a shared backbone infrastructure.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.