Initialization of switching networks for use with a scalable coh

Details Initialization of switching networks for use with a scalable coh Initialization of switching networks for use with a scalable coh

1996-05-13

1998-10-20

Barry, Esq., Lance Leonard

39520053, 3952006, H04L 1200

Patent

active

058260285

ABSTRACT:
The Scalable Coherent Interface (SCI) standard of the Institute of Electrical and Electronics Engineers is intended for fast, high throughput, point-to-point, unidirectional links. It is to serve high-performance multiprocessor systems. A number of key elements are defined as part of the protocol for SCI. These include: (a) command.old which is a bit in transmitted packets for detecting stale packets to discard; (b) idle.cc which is an idle bit to be inserted between packets for detecting lost packets which toggles when the idle bit has circulated around the ringlet; and (c) idle.ac which is an idle bit which toggles when all operational nodes have had an opportunity to transmit. In addition, SCI contemplates the implementation of a number of different types of resets, including power reset, upon read or apparent loss of power for more than a second and linc reset for clearing circuits but not changing error count registers in the system. An implementation of SCI for a switching network which does not contain full agent switches (i.e., switches that have queues), as contemplated by SCI is disclosed which extends the utilization of the above-noted key elements. This implementation provides for a substantial reduction in the complexity, size, power and costs of the network. The network may be expandable in that it can service more than the current number of required operational rings which have at least one scrubber node and may have one or more other functional nodes therein, while handling misrouted packets by providing recirculation conductive connections to all input and output ports of the network that are not connected to such operational rings.

REFERENCES:
patent: 4833468 (1989-05-01), Larson et al.
patent: 4949950 (1990-08-01), Freeman et al.
patent: 5471617 (1995-11-01), Farrand et al.
patent: 5557748 (1996-09-01), Norris
patent: 5572674 (1996-11-01), Ernst
patent: 5598532 (1997-01-01), Liron
patent: 5634009 (1997-05-01), Iddon et al.
patent: 5634010 (1997-05-01), Ciscon et al.
patent: 5666486 (1997-09-01), Alfieri et al.

Affiliated with

Also associated with

Rating

Initialization of switching networks for use with a scalable coh does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Initialization of switching networks for use with a scalable coh, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Initialization of switching networks for use with a scalable coh will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-256278