| 摘要 |
<p>When a communications carrier uses another company's network as a relay network, it is necessary to monitor the health of and to perform maintenance for the lines from end to end in the other company's network as well as the network managed by this carrier. To monitor the lines from end to end, it is necessary to install a terminal device that has been prepared by the communications carrier in a user's home that uses an L2-VPN service. The terminal device is installed in a user's home, so it must perform remote control via the other company's network, and the method of that remote control must be addressed. Furthermore, when the remote control is performed via the other company's network, there will be congestion resulting from device malfunction notifications, so there is a problem in that the malfunctioning segment must be identified. Terminal devices capable of terminating a CCM frame or other OAM signal are installed in user's bases, and the health is monitored from end to end between the bases. Furthermore, a control device that controls the terminal devices is installed in the VLAN network used by the user, and remote control of the terminal devices is implemented from the controller. Table information held by the controller is managed collectively under the leadership of an operator, and information about the subordinate terminal devices connected to the controller is reported to the operator on the basis of results of the MAC learning by the controller. IDs managed by the carrier are specified in the connectivity monitoring segments by the operator, and connectivity can be monitored segment by segment.</p> |
