公开(公告)号：US06594231B1

公开(公告)日：2003-07-15

申请号：US09369323

申请日：1999-08-06

Applicant: Christopher Byham ,  David J Law ,  Nicholas M Stapleton ,  Edward Turner ,  Christopher Walker ,  David Wright

Inventor： Christopher Byham ,  David J Law ,  Nicholas M Stapleton ,  Edward Turner ,  Christopher Walker ,  David Wright

IPC: G01R3108

CPC classification number: H04L12/44 ,  H04L12/437

Abstract: A stackable network unit comprises a ‘down’ port and an ‘up’ port, an arbitration path for data packets from the down port to the up port, a repeat path for data packets from the up port to the down port, a link detector for detecting tile absence of another operative unit connected to the down port to cause data packets on the return pat to bypass the down port and proceed on the arbitration path and for detecting the absence of another operative unit connected to the up port to cause data packets on the arbitration path to bypass the up port and proceed on the repeat path.

Abstract translation: 可堆叠网络单元包括“down”端口和“up”端口，用于从down端口到up端口的数据包的仲裁路径，用于从上行端口到down端口的数据包的重复路径，链路检测器 用于检测连接到下行端口的另一个操作单元的瓦片不存在，以使返回波片上的数据分组绕过下行端口并继续进行仲裁路径，并且用于检测连接到上行端口的另一个操作单元的不存在以产生数据分组 在仲裁路径上绕过上行端口并继续进行重复路径。

公开(公告)号：US06684258B1

公开(公告)日：2004-01-27

申请号：US09547759

申请日：2000-04-12

Applicant: Vincent Gavin ,  Una Quinlan ,  Denise De Paor ,  Tadhg Creedon ,  Nicholas M Stapleton

Inventor： Vincent Gavin ,  Una Quinlan ,  Denise De Paor ,  Tadhg Creedon ,  Nicholas M Stapleton

IPC: G06F1516

CPC classification number: H04L12/433

Abstract: A stackable network unit which can form a ring with other units has a master mode in which it can place packets on the ring, so that they can be ultimately forwarded from other units, and a repeat mode in which it can make a request for transfer of mastership of the ring, inserting bits in a header of an arbitration packet. If a master unit has completed the transmission of a packet and, preferably, after the required inter-packet gap has elapsed, it has not yet received an arbitration header to permit the making of an arbitration decision it can transmit a subsequent packet. The header information of this packet indicates to the other units that this subsequent packet is part of a burst of packets and the other units should not set requests in the header of this packet because this packet would not be used for arbitration. The master unit indicates the nature of the subsequent packet by setting a sequence number in the header of the packet to distinguish it and following packets in a burst from the ‘first’ packet which is the one used to pick up requests from the units that may need to become the master unit.

Abstract translation: 可以与其他单元形成环的可堆叠网络单元具有主模式，其中它可以在环上放置分组，使得它们可以最终从其他单元转发，并且可以在其中进行转移请求的重复模式 在该仲裁包的头部插入位。 如果主单元已经完成了分组的传输，并且优选地，在所需的分组间间隔已经过去之后，它还没有接收到仲裁报头以允许作出可以发送后续分组的仲裁决定。 该分组的报头信息向其他单元指示该后续分组是分组的突发的一部分，并且其他单元不应该在该分组的报头中设置请求，因为该分组不会用于仲裁。 主单元通过在分组报头中设置序列号来指示后续分组的性质，以便从“第一”分组中突发出来的分组中跟随分组，该分组是用于从可能的单元接收请求的分组 需要成为主机。

公开(公告)号：US06330245B1

公开(公告)日：2001-12-11

申请号：US09207655

申请日：1998-12-09

Applicant: Steven Brewer ,  Nicholas M. Stapleton ,  Christopher A. Walker

Inventor： Steven Brewer ,  Nicholas M. Stapleton ,  Christopher A. Walker

IPC: H04L1242

CPC classification number: H04L12/433

Abstract: A data network hub unit is stackable with other such units to constitute a hub in which each of the units can supply data packets to network data destinations and receive data packets from network data sources, and to form a closed data transmission ring which enables packets received at any unit to be transmitted from any other unit. The hub unit includes arbitration control means responsive to packet headers circulating on said ring. The arbitration control means is operative: (i) when the hub unit acts a master unit to supply data packets, to modify data packets to provide them each with an arbitration header which includes a grant field, a request priority field, capable of indicating various different level of priority, and a grant priority field; (ii) when the hub unit is acting as the master unit and has no more data packets to supply to the ring, to respond to an arbitration header which has a set priority field by setting the grant field and setting the grant priority field; (iii) when the hub unit is not the master unit but has data packets to place on the ring, to respond to arbitration headers by setting a priority field; and (iv) when the hub unit is not the master unit but has data packets to send, to respond to an arbitration header which has the grant field set and a grant priority field indicating a priority level corresponding to the priority requested by this unit to become the master unit.

Abstract translation: 数据网络集线器单元可以与其他这样的单元堆叠以构成集线器，其中每个单元可以向网络数据目的地提供数据分组，并从网络数据源接收数据分组，并形成一个封闭的数据传输环，使得能够接收分组 在任何单位从任何其他单位传输。 集线器单元包括响应于在所述环上循环的分组报头的仲裁控制装置。 仲裁控制装置是可操作的：（i）当集线器单元作为主单元提供数据分组时，修改数据分组以向它们提供包括准许字段的仲裁报头，请求优先级字段，能够指示各种 不同级别的优先级和授权优先级字段; （ii）当集线器单元充当主单元并且没有更多数据分组提供给环时，通过设置授权字段并设置授权优先级字段来响应具有设置优先级字段的仲裁报头; （iii）当集线器单元不是主单元，但是具有放置在环上的数据分组时，通过设置优先级字段来响应仲裁报头; 以及（iv）当集线器单元不是主单元而是具有要发送的数据分组时，响应具有授权字段集的仲裁报头以及指示与该单元请求的优先级相对应的优先级的授权优先级字段 成为主机。