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    • 5. 发明授权
    • Transmission apparatus and transmission system
    • 传输装置和传输系统
    • US07983267B2
    • 2011-07-19
    • US12699328
    • 2010-02-03
    • Masayuki TakaseHideki EndoTakayuki KannoNobuyuki Yamamoto
    • Masayuki TakaseHideki EndoTakayuki KannoNobuyuki Yamamoto
    • H04L12/56
    • H04L45/22H04L45/021H04L45/04H04L45/245H04L45/28H04L45/50H04L45/54H04L47/41Y02D50/30
    • A link aggregation function and maintenance function by MPLS OAM. Identical entry information is stored in plural circuits IF which perform a LA setting. In this way, multiplexing to the same LSP is possible even with different IF. The first network IF is assumed to be OAM ACT, and the second network IF is set to OAM SBY (SBY). OAM frame insertion is performed only by an OAM ACT port. In this way, in an opposite MPLS transmission apparatus, it is possible to prevent CV frame reception above a specified number of frames. Further, a switch forwarding table is set to forward frames from the network side to the first network IF of OAM ACT. The second network IF which was set to OAM SBY does not perform fault detection by CV reception. In this way, incorrect detection of faults due to non-reception of OAM can be prevented.
    • MPLS OAM的链路聚合功能和维护功能。 相同条目信息存储在执行LA设置的多个电路IF中。 以这种方式,即使使用不同的IF,也可以复用到相同的LSP。 第一个网络IF被假定为OAM ACT,第二个网络IF设置为OAM SBY(SBY)。 OAM帧插入仅由OAM ACT端口执行。 以这种方式,在相反的MPLS传输装置中,可以防止CV帧接收高于指定帧数。 此外,设置交换机转发表将帧从网络侧转发到OAM ACT的第一网络IF。 设置为OAM SBY的第二个网络IF不通过CV接收执行故障检测。 以这种方式,可以防止由于不接收OAM导致的故障的错误检测。
    • 6. 发明授权
    • Packet transfer apparatus
    • 分组传送装置
    • US07876778B2
    • 2011-01-25
    • US12073951
    • 2008-03-12
    • Masayuki TakaseHideki EndoTakayuki KannoAkihiko TanakaYoshihiro AshiNobuyuki Yamamoto
    • Masayuki TakaseHideki EndoTakayuki KannoAkihiko TanakaYoshihiro AshiNobuyuki Yamamoto
    • H04J3/16
    • H04L69/08H04L12/5601H04L45/74H04L2012/5654H04L2012/5658H04L2012/5667H04L2012/5669H04L2012/5671
    • 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.
    • 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。