公开(公告)号：US20050105558A1

公开(公告)日：2005-05-19

申请号：US11020461

申请日：2004-12-22

申请人： Dennis Doidge ,  Jim Ervin ,  Douglas Henderson ,  Edward Ku ,  Pramod Patel ,  Loren Reiss ,  Thomas Ryle ,  Joseph Rash

发明人： Dennis Doidge ,  Jim Ervin ,  Douglas Henderson ,  Edward Ku ,  Pramod Patel ,  Loren Reiss ,  Thomas Ryle ,  Joseph Rash

IPC分类号： H04L12/56 ,  H04L12/28

CPC分类号： H04L12/5601 ,  H04L2012/5618 ,  H04L2012/5652 ,  H04L2012/5665

摘要： A multiported LAN switch comprised of legacy local area network ports and ATM ports. Each ATM port comprising a hardware forwarding engine for bridging LAN frames from the LAN ports to the ATM port. The hardware forwarding engine converts layer 2 protocols between the dissimilar ports expediently, without requiring intervention by a microprocessor. A substantial performance gain is attained compared to microprocessor controlled format converters. Both LAN emulation and virtual LANs are supported.

公开(公告)号：US20050216783A1

公开(公告)日：2005-09-29

申请号：US10779411

申请日：2004-02-13

申请人： Ganesh Sundaram ,  Thomas Ryle ,  Hiteshi Amin ,  John Diab ,  Yves Vidal

发明人： Ganesh Sundaram ,  Thomas Ryle ,  Hiteshi Amin ,  John Diab ,  Yves Vidal

IPC分类号： G06F11/00 ,  G06F15/173 ,  H04J3/14 ,  H04J3/16

CPC分类号： H04J3/14 ,  H04J3/0608 ,  H04J2203/0082

摘要： A method and system for flow control of GFP-encapsulated Fibre Channel frames over SONET/SDH transport networks is described. Transport interfaces, in the form of port cards, monitor any switch-over or error in the SONET/SDH transport network responsive to GFP out of synchronization signals; and transmit Fibre Channel Ordered Sets indicative of non-operation to it associated Fibre Channel port so that the Fibre Channel port performs link initialization and buffer credit recovery procedures with its counterpart Fibre Channel port across the SONET/SDH transport network. This speeds the recovery of the link between the two Fibre Channel ports.

摘要翻译： 描述了通过SONET / SDH传输网络对GFP封装的光纤通道帧的流量控制的方法和系统。 传输接口以端口卡的形式监视SONET / SDH传输网络中的任何切换或错误，以响应GFP不同步信号; 并将指示不相关光纤通道端口的光纤通道有序集合发送到相关光纤通道端口，以使光纤通道端口与SONET / SDH传输网络上的对应光纤通道端口执行链路初始化和缓冲区信用恢复过程。 这可以加速两个光纤通道端口之间链路的恢复。

公开(公告)号：US20060092943A1

公开(公告)日：2006-05-04

申请号：US10981400

申请日：2004-11-04

申请人： Ganesh Sundaram ,  Hitesh Amin ,  John Diab ,  Thomas Ryle ,  Charles Carriker ,  Marc Bennett

发明人： Ganesh Sundaram ,  Hitesh Amin ,  John Diab ,  Thomas Ryle ,  Charles Carriker ,  Marc Bennett

IPC分类号： H04L1/00

CPC分类号： H04L47/34 ,  H04J3/1617 ,  H04J2203/0048 ,  H04J2203/006 ,  H04J2203/0082 ,  H04L47/10 ,  H04L47/32

摘要： In network systems for transporting GFP-encapsulated FICON frames across a SONET/SDH transport network between FICON ports, the transport interfaces for the FICON ports operate to drop duplicate and out-of-order frames transported across the SONET/SDH network. The transmitting transport interface inserts a sequence number incremented with each FICON frame into said one or more transport frames, whereby the sequence number is used as an index for determining duplicate and out-of-order frames after transport over said SONET/SDH network. The receiving transport interface compares sequence numbers with each FICON frame to determine duplicate and out-of-order FICON frames, drops the duplicate and out-of-order FICON frames; and sends the balance of the compared FICON frames to the receiving FICON port.

摘要翻译： 在用于在FICON端口之间通过SONET / SDH传输网络传输GFP封装的FICON帧的网络系统中，FICON端口的传输接口操作以丢弃通过SONET / SDH网络传输的重复和无序帧。 发送传输接口将与每个FICON帧递增的序列号插入到所述一个或多个传输帧中，由此序列号用作在通过所述SONET / SDH网络传输之后确定重复和失序帧的索引。 接收传输接口将序列号与每个FICON帧进行比较，以确定重复和无序FICON帧，丢弃重复和无序FICON帧; 并将比较的FICON帧的余额发送给接收FICON端口。

公开(公告)号：US20060159112A1

公开(公告)日：2006-07-20

申请号：US11036596

申请日：2005-01-14

申请人： Ganesh Sundaram ,  John Diab ,  Hitesh Amin ,  Thomas Ryle

发明人： Ganesh Sundaram ,  John Diab ,  Hitesh Amin ,  Thomas Ryle

IPC分类号： H04L12/56 ,  H04J3/06

CPC分类号： H04J3/0682 ,  H04J3/1617 ,  H04J2203/0082 ,  H04J2203/0098 ,  H04L47/10 ,  H04L47/283 ,  H04L47/35 ,  H04L49/90

摘要： In a network system for transporting GFP-encapsulated Fibre Channel/FICON data across a SONET/SDH transport network between two Fibre Channel/FICON ports, a transport interface for one Fibre Channel/FICON port intelligently allocates the amount of buffers for receiving Fibre Channel/FICON data from the other Fibre Channel/FICON port by determining the latency of travel across the SONET/SDH transport network. The first transport interface inserts a special latency instruction message into the Fibre Channel/FICON data before encapsulation in a GFP frame. After transport across the SONET/SDH network, the receiving second transport interface immediately sends the special latency instruction message back across the SONET/SDH transport network to the first transport interface which times the return of the special latency instruction message. From the time interval, the first transport interface can determine the latency of the SONET/SDH transport network and allocates the amount of buffers appropriately. This latency determination procedure is performed periodically so that the amount of allocated buffers can change as the latency of the SONET/SDH transport network changes.

摘要翻译： 在用于在两个光纤通道/ FICON端口之间的SONET / SDH传输网络上传输GFP封装的光纤通道/ FICON数据的网络系统中，一个光纤通道/ FICON端口的传输接口智能地分配用于接收光纤通道/ 通过确定通过SONET / SDH传输网络的行程延迟，来自另一个光纤通道/ FICON端口的FICON数据。 第一个传输接口在GFP帧中封装之前将特殊的延迟指令消息插入到光纤通道/ FICON数据中。 在通过SONET / SDH网络传输之后，接收第二传输接口立即将特殊的等待时间指令消息通过SONET / SDH传输网络发送回第一个传输接口，这是传回特殊延迟指令消息的次数。 从时间间隔起，第一传输接口可以确定SONET / SDH传输网络的等待时间并适当地分配缓冲器的量。 周期性地执行该延迟确定过程，使得所分配的缓冲器的数量可随着SONET / SDH传输网络的延迟而改变。

公开(公告)号：US20050010849A1

公开(公告)日：2005-01-13

申请号：US10390813

申请日：2003-03-18

申请人： Thomas Ryle ,  Ganesh Sundaram ,  Hitesh Amin ,  Vikram Devdas ,  John Diab ,  Fuchun Jiang ,  Charles Carriker ,  Marc Bennett

发明人： Thomas Ryle ,  Ganesh Sundaram ,  Hitesh Amin ,  Vikram Devdas ,  John Diab ,  Fuchun Jiang ,  Charles Carriker ,  Marc Bennett

IPC分类号： G01R31/28 ,  H03M13/00 ,  H04J3/14 ,  H04J3/16 ,  H04L20060101

CPC分类号： H04J3/1617 ,  H04J3/14 ,  H04J2203/006 ,  H04J2203/0082

摘要： A method and system for emulating an Fibre Channel link over a SONET transport path to provide link integrity is disclosed. Techniques to handle link failures from a Fibre Channel element to its associated Fibre Channel port, or of the SONET/SDH network linking Fibre Channel ports are described. Timing the length of failures and return of operation of the failed links is used to handle transient conditions and to avoid link bouncing.

摘要翻译： 公开了一种通过SONET传输路径模拟光纤通道链路以提供链路完整性的方法和系统。 描述了从光纤通道元件到其相关联的光纤通道端口或连接光纤通道端口的SONET / SDH网络处理链路故障的技术。 定时故障链路的故障和恢复操作的长度用于处理瞬态条件并避免链路反弹。

公开(公告)号：US20050002338A1

公开(公告)日：2005-01-06

申请号：US10613426

申请日：2003-07-03

申请人： Vikram Devdas ,  Hitesh Amin ,  John Diab ,  Marc Bennett ,  Ganesh Sundaram ,  Thomas Ryle

发明人： Vikram Devdas ,  Hitesh Amin ,  John Diab ,  Marc Bennett ,  Ganesh Sundaram ,  Thomas Ryle

IPC分类号： H04J3/16 ,  H04L12/56 ,  H04J3/14

CPC分类号： H04L47/10 ,  H04J3/1617 ,  H04L47/26 ,  H04L47/30

摘要： A method and system for flow control of GFP-encapsulated client data frames over SONET/SDH transport networks is described. Transport interfaces, in the form of port cards, have FIFO buffers for receiving the GFP frames. In acknowledgment of the received frames, a transmitting transport interface receives an acknowledgement in form of a returned frame sequence number tag along with the available capacity in bytes of the buffer of the receiving transport interface. With a continuous update of buffer capacity and tracking the number of bytes in transit to the receiving transport interface, the transmitting transport interface maximizes the utilization of the channel through the SONET/SDH transport network, even with dropped frames or dropped acknowledgment tags.

摘要翻译： 描述了通过SONET / SDH传输网络对GFP封装的客户端数据帧的流控制的方法和系统。 端口卡形式的传输接口具有用于接收GFP帧的FIFO缓冲器。 在接收帧的确认中，发送传输接口以接收传输接口的缓冲器的可用容量（以字节为单位）接收返回的帧序列号标签的形式的确认。 随着缓冲器容量的持续更新以及跟踪传输到接收传输接口的字节数，发射传输接口即使丢弃帧或丢弃的确认标签也能最大限度地利用SONET / SDH传输网络的信道。