In this paper, we explain the protocol structure for GRAP and discuss the real-time adaptation functions provided by the protocol.
We also show how these functions can be configured using GRAP profiles.
Atm adaptation layer validating the atm header
This paper presents a novel approach to enable Internet Protocol (IP) networks to transport real-time applications with a wide variety of Quality of Service (Qo S) requirements.
This is achieved by introducing the concept of a rotocol (GRAP).
GRAP provides real-time applications with a rich set of flexible and programmable network adaptation capabilities that can be tailored to the specific application requirements.
The flexibility in performing network-level real-time adaptation with GRAP, while abstracting the transport network details from the application, is a key feature that simplifies code development and portability for real-time application developers.
The reassembler comprises a cell manager for separating each cell body from that cell body's corresponding VCI and MID (if present), a linked list manager for managing and storing linked list data indicative of addresses at which the cell bodies are to be stored, a content addressable memory (CAM) for managing and storing the VCIs (and MIDs for connectionless data) and providing pointers into the linked list data, a lookup controller for writing the VCIs to the CAM, a reassembly buffer for storing the cell bodies, and a decryption device for decrypting the data and writing the decrypted data to the reassembly buffer.
The major subsections operate concurrently to form an ATM cell-processing pipeline.The interface may also comprise a segmenter for encrypting data received from a host computer and segmenting the encrypted data into a plurality of ATM cells.1. 28, 1993, which is hereby incorporated by reference into this specification as if fully set forth herein.Finally, we discuss GRAP interoperability and backward compatibility features.A host interface comprising a reassembler for reassembling and decrypting data that has been encrypted in accordance with a pre-defined key and segmented into a plurality of asynchronous transfer mode (ATM) cells.Each cell comprises a virtual channel identifier (VCI), a multiplexing identifier (MID)...Each cell comprises a virtual channel identifier (VCI), a multiplexing identifier (MID) if the data is transmitted using the CCITT specified Class 4 connectionless transfer ATM adaptation layer (AAL), and a cell body.