What is a VTP domain name
Robert Spencer
Published Feb 19, 2026
A VLAN Trunking Protocol (VTP) domain is one switch or several interconnected switches sharing the same VLAN Trunking Protocol (VTP) environment. A switch can be configured only in one VLAN Trunking Protocol (VTP) domain. Switches in different VTP domains do not share VLAN Trunking Protocol (VTP) information.
How do I setup a VTP domain?
- a switch has to be configured as either a VTP server or VTP client.
- the VTP domain name has to be the same on both switches.
- if present, the VTP domain password has to be the same.
- VTP versions have to match.
- the link between the switches has to be a trunk link.
What is Gvrp used for?
The GVRP is an IEEE 802.1Q-compliant method for facilitating automatic (dynamic) VLAN membership configuration. GVRP-enabled switches can exchange VLAN configuration information with other GVRP-enabled switches. Policy rules or other network management methods can determine who is admitted to a VLAN.
Why do we need VTP domain?
VTP enables you to create the VLAN only on a single switch. That switch can then propagate information about the VLAN to every other switch on the network and cause other switches to create it.Is VTP enabled by default?
VTP version 2 is disabled by default. After you have enabled version 2 on one switch, all other switches in the domain also begin to operate in version 2 mode.
How many VTP modes are there?
VLAN Trunking Protocol (VTP) Modes, Server Mode, Client Mode, Transparent Mode. A network switch, which is participating in VLAN Trunking Protocol (VTP), can have three different modes.
How many VTP domains can a switch be configured in?
A switch can be configured only in one VTP domain.
What is trunking in networking?
Networking. Trunking, a term frequently used in IT and telecommunications, refers to a network configuration that efficiently conveys data between multiple entities without using one-to-one links.What is VTP and STP in networking?
VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol that propagates VLAN on the whole local area network. VTP carries VLAN information to all the switches in a VTP domain. Spanning Tree Protocol (STP) is a network protocol that builds a loop-free logical topology for Local Area Networks.
How do I disable VTP?- VTP server mode – the default mode for Cisco switches. …
- VTP client mode – a switch operating in this mode can’t change its VLAN configuration.
What is Pvid?
The PVID indicates a VLAN to which the virtual network device needs to be a member, in untagged mode. Any outbound frames from the virtual network that are untagged are tagged with its PVID by the virtual switch. …
How do I enable Gvrp?
- Enable GVRP globally: COS. set gvrp enable. …
- Configure the port for 802.1Q operation: COS. set trunk mod/port [auto | desirable | on ] dot1q. …
- Configure the port GVRP: COS. set port gvrp mod/port enable. …
- (Optional) Configure the port registration mode: COS.
What is Gvrp in HP switch?
GVRP (GARP VLAN Registration Protocol) is an application of GARP (Generic Attribute Registration Protocol.) It enables a switch to dynamically create 802.1Q-compliant VLANs on links with other devices running GVRP and automatically create VLAN links between GVRP-aware devices.
Which VLAN number is never eligible for VTP pruning?
VLAN 1 is never pruning eligible, because it is a factory-default VLAN. VLANs 1002 to 1005 are reserved for token ring networks. The VLANs 1006 and above require VTP version 3 to be pruning eligible.
What is the purpose of VTP pruning?
VTP pruning helps improve proper allocation and use of network bandwidth by reducing unnecessary flooded traffic, such as broadcast, multicast, unknown, and flooded unicast packets. VTP pruning is disabled by default in Cisco switches.
What is VTP server mode?
VTP server mode (Cisco) VTP servers advertise their VLAN configurations to other switches in the same VTP domain and synchronize their VLAN configurations with other switches based on advertisements received over trunk links. VTP server is the default mode. … The rest of switches work then in Client mode.
Is VTP required?
There are some requirements for VTP to communicate VLAN information between switches. These are: The VTP version must be same on the switches user wants to configure. VTP domain name must be same on the switches.
Where is the VTP domain stored on a switch?
Cisco switches running CatOS store VTP and VLAN information in the main switch configuration file, stored in NVRAM. VTP information is only transmitted over trunk ports. A VTP client does not need a VTP domain name to be configured to learn VLANs.
What is the difference between VLAN and VTP?
VTP protocol is used between switches. VLAN configuration is done on one switch (i.e. switch in VTP server mode). The VTP protocol automatically propagates VLAN information to all the switches in the domain i.e. switches with VTP client modes.
What is the highest VLAN number?
Under IEEE 802.1Q, the maximum number of VLANs on a given Ethernet network is 4,094 (4,096 values provided by the 12-bit VID field minus reserved values at each end of the range, 0 and 4,095).
What are the 3 types of VLANs?
- Management VLAN.
- Data VLAN.
- Voice VLAN.
- Default VLAN.
- Native VLAN.
What can you not do on a VTP client switch?
A VTP client behaves like a VTP server and transmits and receives VTP updates on its trunks, but you cannot create, change, or delete VLANs on a VTP client.
What is Pvst in networking?
Per VLAN Spanning Tree (PVST) is a Cisco proprietary protocol that allows a Cisco device to have multiple spanning trees. The Cisco device can interoperate with spanning trees on other PVST devices but cannot interoperate with IEEE 802.1Q devices. An IEEE 802.1Q device has all its ports running a single spanning tree.
What is STP and its types?
1. 802.1D – This is also known as CST (Common Spanning Tree). It is a spanning tree standard developed by IEEE which elects only one root bridge per whole topology.
What is difference between STP and RSTP?
The main difference between Rapid Spanning Tree Protocol (RSTP IEEE 802.1W) and Spanning Tree Protocol (STP IEEE 802.1D) is that Rapid Spanning Tree Protocol (RSTP IEEE 802.1W) assumes the three Spanning Tree Protocol (STP) ports states Listening, Blocking, and Disabled are same (these states do not forward Ethernet …
What is VLAN in CCNA?
VLANs (Virtual LANs) are logical grouping of devices in the same broadcast domain. VLANs are usually configured on switches by placing some interfaces into one broadcast domain and some interfaces into another. Each VLAN acts as a subgroup of the switch ports in an Ethernet LAN.
What is Cisco trunk?
Trunking Overview. A trunk is a point-to-point link between one or more Ethernet switch interfaces and another networking device such as a router or a switch. Ethernet trunks carry the traffic of multiple VLANs over a single link, and you can extend the VLANs across an entire network.
What is an access port Cisco?
A port on a Cisco switch is either an access port or a trunk port. Access ports belong to a single VLAN and do not provide any identifying marks on the frames that are passed between switches. Access ports also carry traffic that comes from only the VLAN assigned to the port.
How do I know when VTP is pruned?
Note: VTP Pruning is disabled by default on all Cisco Catalyst switches and can be enabled by issuing the “set vtp pruning enable” command. If this command is issued on the VTP Server(s) of your network, then pruning is enabled for the entire management domain.
What does VTP mode transparent mean?
The VTP Transparent mode is something between a VTP Server and a VTP Client but does not participate in the VTP Domain. In Transparent mode, you are able to create, modify and delete VLANs on the local switch, without affecting any other switches regardless of the mode they might be in.
How does Inter VLAN routing work?
Inter-VLAN routing can be defined as a way to forward traffic between different VLAN by implementing a router in the network. … The user nodes in the VLANs forwards traffic to the router which then forwards the traffic to the destination network regardless of the VLAN configured on the switch.