A metropolitan area network system and its network access system

Abstract

The invention discloses a network access system, which comprises a ring optical fiber network; a plurality of user switching devices respectively connected to a preset number of users; a metropolitan area network switching device connected to a metropolitan area network; On the optical fiber network, the first data direction management device connected to the MAN transfer device; all set on the ring optical fiber network, a plurality of second data direction management devices respectively connected to the user transfer device in one-to-one correspondence, using In order to control the received user data to be transmitted on the ring fiber network according to the preset direction, and to control the received user data to be transmitted along the path to the first data direction management device on the ring fiber network when a breakpoint occurs in the ring fiber network . Even if a breakpoint occurs in the ring-shaped optical fiber network, there will be no network disconnection accident, which increases the reliability of the user network. The invention also discloses a metropolitan area network system, which has the same beneficial effects as the above network access system.

Description

Technical field[0001]The present invention relates to the field of metropolitan area, in particular to a network access system, and the present invention also relates to a metropolitan area network system.Background technique[0002]The network access system is used to connect each user with the metro network so that the user can enjoy the various services brought by the network, one of the plurality of user transfer devices in the network access system connects to the metropolitan area network transfer device. The other end is connected to a certain number of users to realize the docking of the metro network and the user, and with the user network bandwidth, the user transfer device gradually shifts to the place where the user is closer, the metropolitan network transfer device is The distance between the user transfer device is far away, in the face of this situation, there is no mature network access system. If the original tree connection is continued, it is likely to cut off the ...

AI Technical Summary

Problems solved by technology

[0002] The network access system is used to connect each user to the metropolitan area network, so that the user can enjoy various services brought by the network. One end of the multiple user switching devices in the network access system is connected to the metropolitan area network switching device , and the other end is connected to a certain number of users to realize the connection between the MAN and the users. With the upgrade of the user network bandwidth, the user switching equipment is gradually moved to a place closer to the user. The MAN switching equipment and the The distance between user switching devices is relatively long. Faced with this situation, there is no mature network access system. If the above-mentioned original tree connection method is continued, due to municipal construction and other reasons, it is likely to cut off the metropolitan area. If the optical fiber between the network transfer device and the user transfer device is used, then all the users connected to the user transfer device will be disconnected from the MAN, resulting in a network disconnection accident. The reliability of the user network is poor, which brings users inconvenient

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