Overview of Transport Layer | Transport Layer

 OVERVIEW OF TRANSPORT LAYER:

Transport Layer protocol provides for logical communication between application processes running on different hosts.

Transport Layer protocols are implemented in the end systems but not in the network routers.

All transport Layer protocols provide an application multiplexing demultiplexing service.

The transport service is said to perform "peer to peer" communication with the remote transport facility.

The transport layer is responsible for reliable data delivery.

Transport Layer Functions:

This Layer breaks message into packets.It perform error recovery,if lower layer not adequately error free.

Function of flow control if not done adequately at the network layer.Functions of multiplexing and demultiplexing.

Properties of Transport protocol:

• Ordered delivery of message.

• Guaranteed message delivery.

• Protocol support Large messages.

• Each host support multiple application processes.

Services for describing Transport service:

• Type of service.

• Quality of service.

• Data Transfer.

• Connection Management.

• Expedited delivery.

• User interface.

• Status Reporting.

• Security.