Packet switching system
First Claim
1. A packet switching system comprising:
- a plurality of communication lines;
at least first and second data control means respectively connected to first and second groups of said communication lines;
at least first and second packet control means respectively connected to said first and second data control means;
a first bus connecting said first and second packet control means; and
a second bus connecting said first and second data control means,said first and second data control means having identical construction and each comprising packet discriminating means for discriminating a type of packet received, packet disassembling/assembling means for disassembling a data packet into a header portion and a data portion and for assembling the disassembled header portion and data portion into the data packet, and data transfer means for controlling transfer of packets,in said first data control means said packet discriminating means discriminating the type of packet received from a communication line within said first group of communication lines which is connected to said first data control means, said packet disassembling/assembling means disassembling the received packet into a header portion and a data portion when said packet discriminating means discriminates the received packet as being a data packet, and said data transfer means transferring the header portion to said first packet control means and the data portion to said second data control means via said second bus,said first packet control means transferring the header portion to said second packet control means via said first bus, said second packet control means transferring the header portion to said second data control means,in said second data control means said packet disassembling/assembling means assembling the header portion received from said second packet control means and the data portion received via said second bus into the data packet, and said data transfer means transferring the assembled data packet on a communication line within said second group of communication lines which is connected to said second data control means.
1 Assignment
0 Petitions
Accused Products
Abstract
A packet switching system has at least first and second packet level control devices and first and second frame level control devices. When a data packet is received at the first frame level control device via a communication line which is connected thereto, the first frame level control device disassembles the data packet and transfers only a header portion of the data packet to the first packet level control device, thereby a data portion of the data packet being transferred directly to the second frame level control device. The second frame level control device assembles the data portion received from the first frame level control device and the corresponding header portion received via the first and second packet level control devices, and transmits the assembled data packet on a communication line which is connected to the second frame level control device.
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Citations
14 Claims
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1. A packet switching system comprising:
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a plurality of communication lines; at least first and second data control means respectively connected to first and second groups of said communication lines; at least first and second packet control means respectively connected to said first and second data control means; a first bus connecting said first and second packet control means; and a second bus connecting said first and second data control means, said first and second data control means having identical construction and each comprising packet discriminating means for discriminating a type of packet received, packet disassembling/assembling means for disassembling a data packet into a header portion and a data portion and for assembling the disassembled header portion and data portion into the data packet, and data transfer means for controlling transfer of packets, in said first data control means said packet discriminating means discriminating the type of packet received from a communication line within said first group of communication lines which is connected to said first data control means, said packet disassembling/assembling means disassembling the received packet into a header portion and a data portion when said packet discriminating means discriminates the received packet as being a data packet, and said data transfer means transferring the header portion to said first packet control means and the data portion to said second data control means via said second bus, said first packet control means transferring the header portion to said second packet control means via said first bus, said second packet control means transferring the header portion to said second data control means, in said second data control means said packet disassembling/assembling means assembling the header portion received from said second packet control means and the data portion received via said second bus into the data packet, and said data transfer means transferring the assembled data packet on a communication line within said second group of communication lines which is connected to said second data control means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification