公开(公告)号：US20140215566A1

公开(公告)日：2014-07-31

申请号：US14161888

申请日：2014-01-23

Applicant: HITACHI, LTD.

Inventor： Shinya FUJIOKA ,  Yoshihiro ASHI ,  Masahiko MIZUTANI

IPC: H04L29/06

CPC classification number: H04L63/123 ,  H04J3/0667 ,  H04L9/3297 ,  H04L63/108 ,  H04L2463/121

Abstract: A transmission network system includes a network terminating device connected to a user terminal and an authentication information device connected to the network terminating device through a transmission network. The transmission network is connected to a reference clock that holds a reference time. The network terminating device includes a terminating internal clock that synchronizes with the reference clock, when receiving a first frame from the user terminal, generates a second frame including a time outputted from the terminating internal clock as a request time on the basis of the first frame, and transmits the second frame to the authentication information device. The authentication information device generates time authentication information based on the request time included in the received second frame, generates a third frame including the generated time authentication information, and transmits the third frame to the transmission network.

Abstract translation: 传输网络系统包括连接到用户终端的网络终端设备和通过传输网络连接到网络终端设备的认证信息设备。 传输网络连接到保持参考时间的参考时钟。 所述网络终端装置包括与所述参考时钟同步的终止内部时钟，当从所述用户终端接收到第一帧时，基于所述第一帧生成包括从所述终止内部时钟输出的时间作为请求时间的第二帧 并将第二帧发送到认证信息设备。 认证信息装置基于包含在接收到的第二帧中的请求时间生成时间认证信息，生成包含生成的时间认证信息的第三帧，并将第三帧发送到传输网络。

公开(公告)号：US20140086040A1

公开(公告)日：2014-03-27

申请号：US13941670

申请日：2013-07-15

Applicant: HITACHI, LTD.

Inventor： Kiyotaka TAKAHASHI ,  Daisuke MASHIMO ,  Yoshihiro ASHI

IPC: H04L12/24

CPC classification number: H04L41/0654 ,  H04L41/0663 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50

Abstract: If, in a situation where the information about the OAM function of a first network including router networks is collected, a fault affecting a service used by a user occurs in a transmission network, which is a second network that acts as a relay for the first network and includes a plurality of transmission devices having a fault monitoring function, the transmission network promptly reports the fault to the router networks by actively using the OAM function of the router networks in order to achieve rapid fault recovery.

Abstract translation: 如果在收集包括路由器网络的第一网络的OAM功能的信息的情况下，影响用户使用的服务的故障发生在作为第一网络的继电器的第二网络的传输网络中 网络，包括具有故障监控功能的多个传输设备，传输网络通过主动使用路由器网络的OAM功能迅速向路由器网络报告故障，以实现快速故障恢复。

公开(公告)号：US20140185429A1

公开(公告)日：2014-07-03

申请号：US14108977

申请日：2013-12-17

Applicant: HITACHI, LTD.

Inventor： Masayuki TAKASE ,  Hideki ENDO ,  Yoshihiro ASHI ,  Taisuke UETA

IPC: H04L12/703 ,  H04L12/707 ,  H04L12/725

CPC classification number: H04L45/28 ,  H04L45/22 ,  H04L45/30 ,  H04L45/58

Abstract: When a communication path between a user site and a dual-homed data center is made redundant, a communication between the user site and a server within a data center can be continued. An edge node DCE-1 of a data center 40-1 and edge nodes TPE-1, TPE-2 of a transport network are connected to each other by a link TPE-1-1 and a link TPE-2-1, respectively. The edge nodes TPE-3 and TPE-1, TPE-2 that hold a node AE51 of a user site 50 are set with an LSP 110 of an active system, and an LSP 120 of a backup system, respectively. One of the links is active, and the other link is backup, and the LSP of the TPE node having the active link in the LSP 100 and the LSP 120 is made active. The respective links are prioritized, and the links are switched to an active state in order from the links higher in the order of priority when a link failure or an LSP failure occurs.

Abstract translation: 当使用户站点和双归属数据中心之间的通信路径变得冗余时，可以继续在用户站点和数据中心内的服务器之间进行通信。 数据中心40-1的边缘节点DCE-1和传输网络的边缘节点TPE-1，TPE-2分别通过链路TPE-1-1和链路TPE-2-1相互连接 。 保持用户站点50的节点AE51的边缘节点TPE-3和TPE-1，TPE-2分别被设置为活动系统的LSP 110和备份系统的LSP 120。 其中一个链路是活动的，另一个链路是备份，并且具有LSP 100和LSP 120中的活动链路的TPE节点的LSP被激活。 相应的链路被优先排列，当发生链路故障或LSP故障时，链路按照优先级顺序更高的顺序切换到活动状态。

公开(公告)号：US20140036923A1

公开(公告)日：2014-02-06

申请号：US14048447

申请日：2013-10-08

Applicant: Hitachi, Ltd.

Inventor： Masayuki TAKASE ,  Hideki ENDO ,  Takayuki KANNO ,  Akihiko TANAKA ,  Yoshihiro ASHI ,  Nobuyuki YAMAMOTO

IPC: H04L29/06 ,  H04L12/741

CPC classification number: H04L69/08 ,  H04L12/5601 ,  H04L45/74 ,  H04L2012/5654 ,  H04L2012/5658 ,  H04L2012/5667 ,  H04L2012/5669 ,  H04L2012/5671

Abstract: A packet transfer apparatus connects two networks of different protocols. The packet transfer apparatus, connected to a first communication network and a second communication network, performs the steps of: storing first destination correspondence information; receiving a packet of the first communication protocol; based on the first destination correspondence information, determining destination information of a packet of the second communication protocol corresponding to destination information of the received packet of the first communication protocol; generating the header of the packet of the second communication protocol, based on the determined destination information of the packet of the second communication protocol; converting the received one or more packets of the first communication protocol into one or more packets of the third communication protocol; and adding the generated header of the packet of the second communication protocol to the packets of the third communication protocol.

Abstract translation: 分组传送装置连接不同协议的两个网络。 连接到第一通信网络和第二通信网络的分组传送装置执行以下步骤：存储第一目的地对应信息; 接收第一通信协议的分组; 基于所述第一目的地对应信息，确定与所述第一通信协议的接收分组的目的地信息相对应的所述第二通信协议的分组的目的地信息; 基于所确定的第二通信协议的分组的目的地信息，生成第二通信协议的分组的报头; 将所接收的第一通信协议的一个或多个分组转换成第三通信协议的一个或多个分组; 以及将生成的第二通信协议的分组的报头添加到第三通信协议的分组。

公开(公告)号：US20150085852A1

公开(公告)日：2015-03-26

申请号：US14454237

申请日：2014-08-07

Applicant: Hitachi, Ltd.

Inventor： Masahiko MIZUTANI ,  Hiroaki NAKAZAWA ,  Yoshihiro ASHI ,  Daiji MITSUNAGA ,  Hideyuki NAKANISHI

IPC: H04L7/00 ,  H04W56/00

CPC classification number: H04J3/0667 ,  H04J3/0673 ,  H04L43/0852 ,  H04L43/0858

Abstract: In an extensive distribution system with no delay guarantee network used as a relay network, an influence of a fluctuation of a communication delay time is avoided to conduct a high-precision time synchronization. First and second delay control devices installed in junctions between communication networks and a relay network, respectively, have functions of retaining first and second time information, and setting a first relay network passing time of a first communication signal directed from a time dissemination device toward a time receiving device through a relay network, and a second relay network passing time of a second communication signal directed from the time receiving device toward the time dissemination device, respectively. In measurement of communication delay time of the first communication network and the second communication network prior to time synchronization, the first and second relay network passing times are unified in advance to exclude uncertainty of the communication time.

Abstract translation: 在广泛的分配系统中，没有延迟保证网络用作中继网络，避免了通信延迟时间的波动对高精度时间同步的影响。 分别安装在通信网络和中继网络之间的接合处的第一和第二延迟控制装置具有保留第一和第二时间信息的功能，并且将从时间传播装置引导的第一通信信号的第一中继网络通过时间设置为 时间接收装置，以及第二中继网络，分别从时间接收装置向时间传播装置通过第二通信信号的时间。 在时间同步之前测量第一通信网络和第二通信网络的通信延迟时间，第一和第二中继网络通过时间被预先统一以排除通信时间的不确定性。

公开(公告)号：US20160021005A1

公开(公告)日：2016-01-21

申请号：US14735441

申请日：2015-06-10

Applicant: Hitachi, Ltd.

Inventor： Takeshi KIYOSE ,  Yoshihiro ASHI ,  Takayuki KANNO ,  Yasunori OMOTO

IPC: H04L12/743 ,  H04L12/707 ,  H04L12/723 ,  H04L12/721 ,  H04L12/729

CPC classification number: H04L45/7453 ,  H04L45/125 ,  H04L45/24 ,  H04L45/50 ,  H04L45/66

Abstract: A first communication apparatus and a second communication apparatus are coupled to each other via predetermined communication paths. The control apparatus is configured to: acquire an available bandwidth in each of the predetermined communication paths; define such sub-paths as to start from the first communication apparatus to reach the second communication apparatus and that one of the sub-paths pass through one of the communication paths; determine sub-path bandwidths for the sub-paths in accordance with the acquired available bandwidths; and transmit information for identifying each of the sub-paths and information indicating the sub-path bandwidths to the first communication apparatus by including the information in a setting instruction to set the sub-paths for the first communication apparatus and the second communication apparatus.

Abstract translation: 第一通信装置和第二通信装置经由预定的通信路径彼此耦合。 控制装置被配置为：在每个预定通信路径中获取可用带宽; 定义从第一通信装置开始到达第二通信装置的这种子路径，并且子路径中的一个穿过通信路径之一; 根据获取的可用带宽确定子路径的子路径带宽; 并且通过将设置指令中的信息包括在第一通信装置和第二通信装置的子路径中来设定用于识别每个子路径的信息和表示子路径带宽的信息。

公开(公告)号：US20150103643A1

公开(公告)日：2015-04-16

申请号：US14575246

申请日：2014-12-18

Applicant: Hitachi, Ltd.

Inventor： SHINYA FUJIOKA ,  Yoshihiro ASHI ,  Masahiko MIZUTANI ,  Hideki ENDO

IPC: H04L12/24

CPC classification number: H04L41/0668 ,  H04L43/0817

Abstract: A transmission network is comprised of a network management system for collectively managing and controlling a plurality of transmission devices coupled mutually through transmission routes and the transmission network as well. The network management system includes a plane management table adapted to manage transmission planes defined as a set of paths in the transmission network, and the plane management table has the function to set and manage a transmission plane (working plane) applied during normal operation and besides, a single or a plurality of transmission planes (protection planes) applicable in the event of occurrence of a fault in the transmission network. Then, when a fault occurs in the transmission network, the network management system changes the applied plane to a suitable transmission plane.

Abstract translation: 传输网络由用于集体管理和控制通过传输路由和传输网络相互耦合的多个传输设备的网络管理系统组成。 网络管理系统包括适于管理被定义为传输网络中的一组路径的传输平面的平面管理表，并且平面管理表具有设置和管理在正常操作期间应用的传输平面（工作平面）的功能，此外 ，在传输网络中发生故障的情况下可应用的单个或多个传输平面（保护平面）。 然后，当传输网络发生故障时，网络管理系统将应用的平面改变为合适的传输平面。

公开(公告)号：US20150010009A1

公开(公告)日：2015-01-08

申请号：US14323255

申请日：2014-07-03

Applicant: Hitachi, Ltd.

Inventor： Kiyotaka TAKAHASHI ,  Yoshihiro ASHI

IPC: H04L12/46 ,  H04L12/713 ,  H04L12/751

CPC classification number: H04L12/4633 ,  H04L41/0879 ,  H04L45/10 ,  H04L45/50 ,  H04L45/586

Abstract: A data transport system comprises transport apparatus and at least one computer. The transport apparatus construct a second network coupled to a first network which is constructed by a communication apparatus. A logical path is built between a first transport apparatus and the computer. The first transport apparatus is configured to: hold management information, which associates identification information of a port with logical path identification information; refer to the management information to identify the logical path identification information that is associated with the port through which the control information has been received; and assign the identified logical path identification information to the control information, and transmit the control information over the logical path. The computer assigns the logical path identification information assigned to the control information to response information, and transmits the response information to the second network.

Abstract translation: 数据传输系统包括传送装置和至少一个计算机。 该传送装置构成一第二网络，该第二网络由一通信装置构成的第一网络。 在第一传送设备和计算机之间建立逻辑路径。 第一传送装置被配置为：保持将端口的识别信息与逻辑路径识别信息相关联的管理信息; 参考管理信息来识别与已经接收到控制信息的端口相关联的逻辑路径识别信息; 并将所识别的逻辑路径识别信息分配给控制信息，并通过逻辑路径发送控制信息。 计算机将分配给控制信息的逻辑路径识别信息分配给响应信息，并将响应信息发送到第二网络。

公开(公告)号：US20140185607A1

公开(公告)日：2014-07-03

申请号：US14133225

申请日：2013-12-18

Applicant: HITACHI, LTD.

Inventor： Daisuke MASHIMO ,  Kiyotaka TAKAHASHI ,  Takeshi SHIBATA ,  Yoshihiro ASHI

IPC: H04L12/751

CPC classification number: H04L45/10 ,  H04L41/0896 ,  H04L45/04 ,  H04L45/50

Abstract: In interworking systems that utilize IP/MPLS protocol processing to operate a centralized control server within a MPLS-TP network as a pseudo-router unit; a system improves the utilization rate of the MPLS-TP network by establishing default paths beforehand as a precondition to coupling between MPLS-TP network edge devices and mapping a plurality of IP/MPLS paths between the same edge devices to the common default paths when mapping to provide IP/MPLS network connectivity.

Abstract translation: 在使用IP / MPLS协议处理的互通系统中，将MPLS-TP网络内的集中控制服务器作为伪路由器单元进行操作; 系统通过预先建立缺省路径，提高MPLS-TP网络的利用率，作为MPLS-TP网络边缘设备之间耦合的前提条件，并将映射到同一边缘设备之间的多个IP / MPLS路径映射到公共默认路径 提供IP / MPLS网络连接。