Link and discovery protocol for a ring interconnect architecture

Details Link and discovery protocol for a ring interconnect architecture Link and discovery protocol for a ring interconnect architecture

1995-06-07

1996-12-31

Chin, Wellington

Multiplex communications

Network configuration determination

In a bus system

370403, H04L 1256

Patent

active

055901247

ABSTRACT:
A protocol for use in a system including a first node, a second node and, in some instances, a third node, each of the first, second and third nodes coupled to each other of the first, second and third nodes by a point to point packet-based communication system defines transactions for transferring variable amounts of data from one node to another. A GET transaction allows an instigator node to send a packet to a partner node. The packet specifies data length, and an address in the partner node's resource. A PUT transaction similarly allows an instigator node to send a packet specifying a response port identifier, a data length and an address in a partner node's resource to which data is to be written. A PROXY transaction is disclosed which allows an instigator node to cause a source partner node to send data to a target (destination) partner node. Other transactions are also disclosed. In each instance, port identifiers accompany packets in order to associate received data with a particular transaction. A discovery protocol allows an instigator node to use the data transfer protocol to determine the topology of the ring architecture to which it is coupled.

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National Semiconductor, QR0001 Quickring.TM. Data Stream Controller Interface, pp. 1-28, Rev. 13, May 1993.

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