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。