This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Segmentation and reassembly" – news · newspapers · books · scholar · JSTOR(December 2009) (Learn how and when to remove this message)
IDT 77155, a 155 Mbit/s ATM SAR controller chip
Segmentation and reassembly (SAR) is the process used to fragment and reassemble variable length packets into fixed length cells so as to allow them to be transported across Asynchronous Transfer Mode (ATM) networks or other cell based infrastructures. Since ATM's payload is only 48 bytes, nearly every packet from any other protocol has to be processed in this way. Thus, it is an essential process for any ATM node. It is usually handled by a dedicated chip, called the SAR.
The process is conceptually simple: an incoming packet from another protocol to be transmitted across the ATM network is chopped up into segments that fit into 48-byte chunks carried as ATM cell payloads. At the far end, these chunks are fitted back together to reconstitute the original packet.
The process is analogous to the fragmentation of IP packets on reaching an interface with a maximum transmission unit (MTU) less than the packet size and the subsequent reassembly of the original packet once the fragments have reached the original packet's destination.
Since different types of data are encapsulated in different ways, the details of the segmentation process vary according to the type of data being handled. There are several different schemes, referred to as ATM adaptation layers (AAL). The schemes are:
Segmentationandreassembly (SAR) is the process used to fragment and reassemble variable length packets into fixed length cells so as to allow them to...
before delivery to the receiving host. This process is known as SegmentationandReassembly (see below). The last cell contains padding to ensure that the...
Look up reassembly in Wiktionary, the free dictionary. Reassembly may refer to: SegmentationandReassemblyReassembly (video game) Digit-reassembly number...
process of dividing a data packet into smaller units Segmentationandreassembly TCP segmentation, the process of dividing a data stream into segments...
protocol (COTP), perform segmentationandreassembly of segments on the receiving side; connectionless transport protocols, such as UDP and the OSI connectionless...
Adaptation Protocol). The L2CAP protocol is responsible for the segmentationandreassembly of the packets. The hardware that makes up the Bluetooth device...
(UM) and Transparent Mode (TM) Error correction through ARQ (only for AM data transfer) Concatenation, segmentationandreassembly of RLC SDUs (UM and AM)...
Adaptation Layer) are: Segmentationandreassembly Handling of transmission errors Handling of lost and misinserted cell conditions Timing and flow control The...
noisy media. Fujitsu Ltd. v. Netgear Inc. Packet aggregation Segmentationandreassembly "How the TCP/IP Protocols Handle Data Communications - Oracle...
a virtual circuit. At this level PLP handles segmentationandreassembly, bit padding, error control and flow control. Idle mode is used when a virtual...
code SAR Stock appreciation right, an employee reward Segmentation and reassembly, in data networks Service Archive or SAR, a file format related to JAR...
architecture of protocols in the network stack in the Internet protocol suite and the OSI model. The protocols of this layer provide end-to-end communication...
§ Fragmentation IP fragmentation attack Protocol data unit and Service data unit Segmentationandreassembly – Arranging data into cells in an ATM network Internet...
layer packet (see segmentationandreassembly), where the packets are transmitted with a maximum bandwidth determined by the SCR and cells within the packets...
of applications: custody transfer, segmentationandreassembly, end-to-end reliability, end-to-end security, and end-to-end routing among them. The Bundle...
Multiplexing data between different higher layer protocols. Segmentationandreassembly of packets. Providing one-way transmission management of multicast...
reason. In protocol standards and implementations, the frame aggregation is usually combined with segmentationandreassembly of frames so that the time...
layers, AAL2 defines segmentationandreassembly of higher-layer packets into ATM cells, in this case packets of data containing voice and control information...
integrated transceiver, codec, line driver, and line receiver Hardware accelerated ATM SegmentationandReassembly (SAR) Integrated IEEE 802.3 PHY Two IEEE...
segmenting/reassembly function for protocol classes 0 and 1 is provided. In this case, the SCCP at the originating node or in a relay node provides segmentation...
(TCP/IP) and works directly over Ethernet to form its storage area network (SAN). It skipped the routing, retransmission, segmentation, reassembly, and all...
Global Information
