Glossary

Project

A project contains everything that is needed to save and restore a virtual network in GNS3 (the topology, virtual disks, settings etc.)

Topology

A topology represents a virtual network (nodes, visual elements, links…). A topology is often used to refer to a project.

Node

A Virtual Machine (Dynamips, IOU, Qemu, VPCS…) or builtin node (cloud, switch, hub…) that run on a compute.

Template

A template used to create a new node. A node is created when dragging a template to a topology.

Appliance

A file (.gns3a or .gns3appliance) used to create a new template with predefined settings.

Drawing

A Drawing is a visual element like annotations, images, rectangles etc. There are pure SVG elements.

Adapter

A physical network interface, like a PCI card. The adapter can contain multiple ports.

Port

A port is an opening on a network adapter where can be plugged into.

For example a VM can have a serial and an Ethernet adapter. The Ethernet adapter itself can have 4 ports.

Controller

The central server managing everything in GNS3. A GNS3 controller will manage multiple GNS3 compute node.

Compute

The process running on each server with GNS3. The GNS3 compute node is controlled by the GNS3 controller.

Symbol

A symbol is an icon used to represent a node on a scene.

Scene

A scene is the drawing area or canvas.

Filter

Packet filter, for instance to add latency on a link or drop packets