Virtual circuits are logical circuits created to ensure reliable communication between two network devices. Two types of virtual circuits exist:
• Switched virtual circuits (SVCs)—Virtual circuits that are dynamically established on demand and terminated when transmission is complete. Communication over an SVC consists of three phases: circuit establishment, data transfer, and circuit termination.
• Permanent virtual circuits (PVCs)—Permanently established virtual circuits that consist of one mode: data transfer.
Was this article helpful?