Two-way loop network system and its control method

Abstract

The invention discloses a two-way ring network system. The two-way ring network system comprises a main node and at least one slave node, wherein, the main node comprises at least two pairs of E1 ports and the slave node comprises two pairs of the E1 ports and an Ethernet port which exchanges data with the two pairs of the E1 ports; the main node and the slave node form a two-way ring network through the connection of the E1 ports. The main node further comprises switch equipment which is provided with CPOS ports and terminal multiplexing equipment which is connected with the switch equipment by the CPOS channel and the E1 ports of the main node are arranged on the terminal multiplexing equipment. The invention also discloses a method for controlling the two-way ring network system. The two-way ring network system can prevent signal-point troubles which can further result in communication failures in a network, discover the problem of the cross connection at the two-way ring and automatically block a self-loopback of the E1 port; the switch equipment is connected with the terminal multiplexing equipment by the CPOS channel; therefore, the ring network capacity is large, the optical fiber can be directly connected to the switch equipment without being led to the ground, the system structure is simplified and the cost is saved.

Description

【Technical Field】 [0001] The present invention relates to electric communication technology, in particular to a two-way ring network system and a control method thereof. 【Background technique】 [0002] There are two main types of networking technologies in the current telecom field as follows: [0003] 1. E1-Ethernet framing bridge technology [0004] E1-Ethernet framing bridge technology can realize the simple bridging function of E1 network (WAN) and Ethernet (LAN), and can also form a ring E1 network. Each node has an FE (Fast Ethernet, Fast Ethernet) interface, but They are only one-way loops and do not have loop protection functions. Once the cable or a node on the loop fails, the entire loop communication will fail, and communication cannot be restored by itself. The communication must be manually repaired before the communication can be restored. For basic principles, see figure 1 . [0005] 2. Point-to-point networking technology based on CPOS (Channelized Packet Over SO...

AI Technical Summary

Problems solved by technology

The capacity of the two-way E1 ring network realized in this way is small. In the case of cascade connection, a 24-port switch can have up to 11 double rings. In practical applications, the optical fiber is usually directly connected to the central computer room. Under this scheme, the system needs to complete two conversions from fiber to E1 and from E1 to Ethernet, which has complex structure and high cost

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