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    • 68. 发明专利
    • Packet transfer apparatus and communication system
    • 分组传输设备和通信系统
    • JP2008022391A
    • 2008-01-31
    • JP2006193543
    • 2006-07-14
    • Hitachi Communication Technologies Ltd株式会社日立コミュニケーションテクノロジー
    • TSUZUKI AKIHITOMIYATA HIROAKIKIHINOKI YASUO
    • H04L12/46
    • H04L45/00H04L45/3065H04L65/1006H04L65/80H04L67/14H04L67/146H04L67/147H04L69/164
    • PROBLEM TO BE SOLVED: To prevent delay in transfer of speech communication packet in the network including L2SW under the setting of the uplink VLAN.
      SOLUTION: The packet transfer apparatus (1) stores, in the process to establish a session among the terminals (5) connected, correspondence relationship between the information for identifying an originating side terminal (5-1) and a terminating side terminal (5-2) and connection port (user connection information) to a table. For example, an destination IP address, a transmission source IP address, a destination port number, a transmission source port number, and a connection port, etc. are stored in the table by snooping SIP messages of the session control packets communicated among the terminals (5). When the RTP packet as the speed data is received after establishment of session, the packet transfer apparatus (1) returns the same packet therefrom or transfers the packet to an uplink port in accordance with the table explained above.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了防止在上行链路VLAN的设置下包括L2SW在内的网络中的语音通信分组的传输延迟。 解决方案:分组传送装置(1)在连接的终端(5)之间建立会话的处理中存储用于识别始发侧终端(5-1)的信息与终端侧终端(5-1)之间的对应关系 (5-2)和连接端口(用户连接信息)。 例如,目的IP地址,发送源IP地址,目的端口号,发送源端口号和连接端口等通过侦听在终端之间传送的会话控制分组的SIP消息来存储在表中 (5)。 当在建立会话之后接收到作为速度数据的RTP分组时,分组传送装置(1)从其返回相同的分组,或者根据上述表将分组传送到上行链路端口。 版权所有(C)2008,JPO&INPIT