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Communication relay device with redundancy function for line in network in accordance with WAN environment and communication system using the same
Communication relay device with redundancy function for line in network in accordance with WAN environment and communication system using the same
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机译:具有根据WAN环境的网络中的线路的冗余功能的通信中继设备以及使用该通信中继设备的通信系统
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摘要
A communication relay device with a redundancy function for a line in a network under a WAN environment is connected to another, having a one-to-one relationship at both ends of each line by first and second ports to configure a redundancy channel between lines. A closed port setting section sets one of the ports as a closed port, thereby configuring a network free of a loop between the respective lines. A closed port setting information notifying section notifies a counterpart communication relay device connected to the one port, via the one port, of closed port setting notifying information for notifying that one of the ports has been set as a closed port. A datagram transmission stopping section stops transmission of a datagram from a port of its own connected to the one port set as the closed port when receiving the closed port setting notification information as the counterpart communication relay device.
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