6
Connection-oriented and connectionless switching
Connection oriented
- Applies same route
- QoS well defined
- QoS well defined
- Phases
- Connection setup
- Data transmission
- Release
- Packets received in same order
- Example: ATM, frame relay, PCM
- Connection setup
- Data transmission
- Release
- Packets received in same order
- Example: ATM, frame relay, PCM
Connectionless
- Use of different routes for
each packet possible
- Each packet have address fields
- QoS not guaranteed
each packet possible
- Each packet have address fields
- QoS not guaranteed
- Packets may come in different order
- Example: IP (Internet Protocol),
TCP takes care of cleaning the mess
- Example: IP (Internet Protocol),
TCP takes care of cleaning the mess