There are several types of switching protocols used in computer networks, some of the most common include:

• Circuit Switching: This is the traditional telephone network switching method, where a dedicated physical path is established between two devices for the duration of a call.
• Packet Switching: This method breaks data into packets and sends them independently through the network. Each packet is routed based on its destination address, and can take a different path to reach its destination. Examples include:
  • Datagram
  • Virtual Circuit
• LAN Switching: This method of switching is used within a local area network (LAN) to forward data between devices. Examples include:
  • Ethernet
  • Token Ring
• ATM Switching: Asynchronous Transfer Mode (ATM) is a high-speed switching method that uses fixed-size cells to transmit data. It is often used in wide area networks (WANs) and broadband networks.
• MPLS Switching: Multi-Protocol Label Switching (MPLS) is a method of forwarding packets based on labels rather than routing them based on their destination IP addresses. It is often used in service provider networks to provide Quality of Service (QoS) and traffic engineering.
• SDN Switching: Software-Defined Networking (SDN) is a method of controlling the behavior of the network by using software, rather than configuring individual devices. It allows for more efficient and flexible network management.

This list is not exhaustive, there are many other switching protocols that have been developed for specific use cases or environments.