VTP
E171413
VTP (VLAN Trunking Protocol) is a Cisco proprietary Layer 2 protocol used to manage and propagate VLAN configuration information across switches in a network.
All labels observed (2)
| Label | Occurrences |
|---|---|
| VLAN Trunking Protocol | 1 |
| VTP canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1503373 — 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: VTP Context triple: [Cisco IOS, supportsProtocol, VTP]
-
A.
STP
STP is the three-letter ISO 3166-1 alpha-3 country code for São Tomé and Príncipe, an island nation in the Gulf of Guinea off Central Africa.
-
B.
IEEE 802.1Q VLAN tagging standard
The IEEE 802.1Q VLAN tagging standard defines how virtual LANs are implemented and identified over Ethernet networks by inserting a VLAN tag into Ethernet frames.
-
C.
IEEE 802.1Qft
IEEE 802.1Qft is an amendment to the IEEE 802.1Q standard that specifies enhancements for deterministic, time-sensitive networking in bridged Ethernet networks.
-
D.
IEEE 802.1Qfp
IEEE 802.1Qfp is an IEEE networking standard that defines mechanisms for enhanced traffic scheduling and queuing in bridged and time-sensitive Ethernet networks.
-
E.
IEEE 802.1ad
IEEE 802.1ad is an Ethernet networking standard that extends VLAN tagging (often called Q-in-Q) to support scalable, provider-based virtual LAN services in metropolitan and carrier 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: VTP Target entity description: VTP (VLAN Trunking Protocol) is a Cisco proprietary Layer 2 protocol used to manage and propagate VLAN configuration information across switches in a network.
-
A.
STP
STP is the three-letter ISO 3166-1 alpha-3 country code for São Tomé and Príncipe, an island nation in the Gulf of Guinea off Central Africa.
-
B.
IEEE 802.1Q VLAN tagging standard
The IEEE 802.1Q VLAN tagging standard defines how virtual LANs are implemented and identified over Ethernet networks by inserting a VLAN tag into Ethernet frames.
-
C.
IEEE 802.1Qft
IEEE 802.1Qft is an amendment to the IEEE 802.1Q standard that specifies enhancements for deterministic, time-sensitive networking in bridged Ethernet networks.
-
D.
IEEE 802.1Qfp
IEEE 802.1Qfp is an IEEE networking standard that defines mechanisms for enhanced traffic scheduling and queuing in bridged and time-sensitive Ethernet networks.
-
E.
IEEE 802.1ad
IEEE 802.1ad is an Ethernet networking standard that extends VLAN tagging (often called Q-in-Q) to support scalable, provider-based virtual LAN services in metropolitan and carrier networks.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Cisco proprietary protocol
ⓘ
network protocol ⓘ |
| canAffect |
VLAN creation
ⓘ
VLAN deletion ⓘ VLAN renaming ⓘ VLAN trunk pruning ⓘ |
| category | LAN management protocol ⓘ |
| configurationPropagatedTo | VTP client switches ⓘ |
| configurationStoredOn | VTP server switches ⓘ |
| developedBy | Cisco Systems ⓘ |
| fullName |
VLAN Trunking Protocol
ⓘ
linked to:
VTP
|
| hasMode |
client mode
ⓘ
off mode ⓘ server mode ⓘ transparent mode ⓘ |
| hasVersion |
VTP version 1
ⓘ
VTP version 2 ⓘ VTP version 3 ⓘ |
| messageType |
advertisement request
ⓘ
join message ⓘ subset advertisement ⓘ summary advertisement ⓘ |
| operatesAtOSIlayer | Layer 2 ⓘ |
| primaryFunction |
manage VLAN configuration information
ⓘ
propagate VLAN configuration information ⓘ |
| requires |
matching VTP domain name on switches
ⓘ
matching VTP password when authentication enabled ⓘ |
| risk |
incorrect VLAN deletion across domain
ⓘ
propagation of misconfigurations ⓘ |
| scope | single VTP domain ⓘ |
| supportsConcept |
VLAN
ⓘ
VLAN database ⓘ VTP advertisements ⓘ VTP domain ⓘ VTP mode ⓘ VTP pruning ⓘ VTP revision number ⓘ |
| transparentModeBehavior |
forwards VTP advertisements without applying them
ⓘ
maintains local VLAN database only ⓘ |
| usedBy |
Cisco switches
ⓘ
linked to:
Cisco Catalyst switches
|
| usedFor | centralized VLAN management ⓘ |
| usedIn | Ethernet switched networks ⓘ |
| usesTransport |
802.1Q trunks
ⓘ
ISL trunks ⓘ |
| version3Feature |
enhanced authentication
ⓘ
extended VLAN support ⓘ primary server concept ⓘ |
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: VTP Description of subject: VTP (VLAN Trunking Protocol) is a Cisco proprietary Layer 2 protocol used to manage and propagate VLAN configuration information across switches in a network.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.