JP2629597B2 - Transmission network with connection state analysis function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission network with a connection state analysis function capable of analyzing the connection state of a transmission network by time division multiplex transmission.

[0002]

BACKGROUND OF THE INVENTION Conventional transmission network, is for example the one shown in FIG. 2, with respect to one central node N _i, 10 nodes N
_{i + 1 to} N _{i + 10} are connected. In the transmission network 10, and the central node N _i and four nodes N _{i + 1} to N i + ₄ are connected to the annular, the node N _{i + 2} of the three nodes N _{i + 5,} N _{i + 6} and N _{i + 7} are connected linearly. The three nodes N _{i + 8} , N _{i + 9} , and N _{i + 10} are also linearly connected, and the node N _{i + 9} and the preceding node N _{i + 6} are connected to each other. ing. In the transmission network 10, there is no function of directly analyzing the connection state of each node, and the connection state is previously input as a database by an external management system.

[0003] Incidentally, the related art of the content of controlling transmission data for a transmission network in which a plurality of nodes are connected includes:
JP-A-60-246145, JP-A-63-234
753, JP-A-3-54938 and the like.

[0004]

In the case of the above-described transmission network, if the connection state is analyzed using a management system, each node is connected in a ring or straight line, and a branching section (a node N having three or more ports) is used. _{(including i + 2} , _{Ni + 6} , and _{Ni + 9} ), making it difficult to construct a database. Further, even if the database is constructed and prepared, if the database is changed due to the update of the connection state or the like, it takes a lot of labor and time, and it is difficult to deal with it.

Further, recent transmission networks are complicated by adding a redundant function as a basic function for improving reliability, or increasing a transmission rate, and providing a dedicated control path and a control / communication path. However, if there is no connection state analysis function, the operator needs to know the information empirically. In such a transmission network, operation including determination of the presence or absence of connection is performed artificially, and therefore, there is a risk of malfunction. The present invention has been made to solve such a problem, and a technical problem of the present invention is to provide a transmission network with a connection state analysis function that allows an operator to easily analyze and grasp the connection state of the entire transmission network. is there.

[0006]

According to the present invention, there is provided a transmission network including a central node, the network including a plurality of nodes each having a unique address and a predetermined number of ports, and a transmission network connected to the central node. An information processing apparatus, the information processing apparatus is a transmission network with a connection state analysis function for transmitting connection state analysis bits to a plurality of nodes in a time-division multiplexing manner, and the information processing apparatus includes a plurality of nodes. A connection state analysis bit output from a specific port in the predetermined node is operated and changed and transmitted to the next node following the next node of the predetermined node, and transmitted from the next node. A connection characterized by sequentially repeating an operation of receiving a unique address to be returned and the number information of a port which has input / output a changed connection state analysis bit. State analysis function with transmission network can be obtained.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows a basic configuration of a transmission network with a connection state analyzing function according to an embodiment of the present invention. The connection state analysis function transmission network, as well as including a central node N _i, respectively node N _{i + 1} ~N _{i + n} of a plurality of (n) having a unique address and a predetermined number of ports connected to the annular a transmission network 1 comprising Te, and a connected information processing apparatus 2 which in the central node N _i. Here the information processing apparatus 2, the transmission on each node N _i to N i + time division multiplexing bit connection state analysis on _n. Further, the information processing apparatus 2, which is varied by operating the connection state analyzing bits output from a specific port at a given node (e.g., central node N _i) of each of the nodes N _i ~N _i + _n Is transmitted to the next node (that is, the node N _{i + 1} ) following the next node of the predetermined node (the central node N _i ), and the unique node is returned from the next node (N _{i + 1} ). The operation of receiving the address and the number information of the port that has input and output the changed connection state analysis bits is sequentially repeated. That is, the information processing device 2 stores the unique address from the specific node and the number information of the receiving port into the central node N _i.
It can be read via the Internet. The communication protocol can be distinguished between the transmission side and the reception side, and can be configured by the functions of the standard communication protocol. However, the nodes do not transfer the connection state analysis bits to each other.

Therefore, in the case of the transmission network having the connection state analysis function, the connection state analysis bit is transmitted to each node N in the transmission network 1.
_{If i to} N _{i + n} are not directly connected, they will not be transmitted. For example, as can not receive it in another node N _{i + 1} ~N _{i + n} when that the operation of the bit connection status analysis on the initially central node N _i in the information processing apparatus 2 Has become.

The connection state analyzing function of the transmission network with the connection state analyzing function will be described below with reference to FIGS. 1 (A) to 1 (C). However, FIG. 1 (A) is the next hop node continues what was changed by operating the connection state analyzing bits output from a specific port of the central node N _i to the next stage N
FIG. 1B shows a state of transmission to _{i + 1} , and FIG.
_{i + 1} from the number information of the port that has inputs and outputs that are operated to change the unique address and the state analyzing bit indicates a state to be returned to the central node N _i, FIG. 1 (C) is the center another next hop node that are separated from the node N _i N _{i + 2} (i.e., further what follows next stage of the next node N _{i + 1)} transmit those further varied by operating the connection state analyzing bit FIG.

[0011] First, as shown in FIG. 1 (A), the specific port is changed by operating the connection state analyzing bits output from the (designated port) to the information processing apparatus 2 is the central node N _i , And transmits the changed connection state analysis bit to the next-stage node N _{i + 1} . The operation at this time must be an operation that can be determined by the receiving side, but specifically, the connection state analysis bit functions sufficiently by operating 1 bit to 1 or 0. Here, all nodes N _{i to} N _{i + n}
Monitors the connection state analysis bits when necessary.

Next, as shown in FIG. 1B, the next-stage node N receiving the changed connection state analysis bit
_{i + 1} returns to the information processing device 2 its own unique address and the number information of the port that has input / output the changed connection state analysis bit. However, if the node has a large number of ports, the port for returning the number information is not limited.
The previous steps, the transmission network 1 of the information processing apparatus 2 to the next hop node N _{i + 1} via the central node N _i which is the center station, which with respect to the central node N _i and the next hop node N _{i + 1} It is possible to detect whether or not a connection is made at the port.

Further, as shown in FIG. 1C, the information processing device 2 performs the same operation on the next-stage node N _{i + 1} . That is, the information processing device 2 further manipulates and changes the once changed connection state analysis bit output from the specific port (designated port) to the next-stage node N _{i + 1} and further changes the bit. The connection state analysis bit is transmitted to another next-stage node N _{i + 2} . However, designated port in this case is different from the port that is already connected state has been confirmed (the port connected to the central node N _i). Subsequently, another next-stage node N _{i + 2} receiving the further changed connection state analysis bit sends its own unique address to the information processing device 2 and the further changed connection state analysis bit. It returns the input / output port number information.

Such an operation is performed on nodes N _{i + 2} , N _{i + 3} ,
..., if similarly sequentially repeated for N i _{+ n,} the information processing apparatus 2 is capable of collecting connection information of all the nodes N _i ~N _i + _n in the transmission network 1. By using the connection information thus collected, the connection state of the entire transmission network 1 can be easily analyzed.

That is, the connection state analysis function in the transmission network 1 is such that the information processing device 2 operates a connection state analysis bit output from a specific port of a predetermined node among the nodes N _{i to} N _{i + n.} The changed connection state analysis bit is transmitted to the next-stage node following the predetermined node, and the unique address returned from the next-stage node and the changed connection state analysis It is obtained by sequentially repeating the operation of receiving the number information of the port that has input / output the use bit.

The connection state analysis function is performed by a function other than the transmission network 1 in which a plurality of nodes are connected in a ring as described above, that is, for example, nodes N _{i + 2} , 3 or more ports as shown in FIG. The present invention is applicable to a complicated transmission network 10 including N _{i + 6} and N _{i + 9} , and is applicable to a case where the connection state of the entire transmission network 10 is analyzed.

[0017]

As described above, according to the present invention, a connection state analysis bit is assigned to a plurality of nodes each having a unique address and a predetermined number of ports via a central node by an information processing apparatus. The transmission is performed in a time-division multiplexed manner while being changed, and the operation of receiving a unique address from the transmission destination node and the number information of the port that has input and output the changed connection state analysis bit is sequentially repeated. Therefore, a transmission network with a connection state analysis function that allows an operator to easily analyze and grasp the connection state of the entire transmission network can be obtained. This connection state analysis function,
For transmission networks where the connection of each node is complicated, or where redundancy is added, the transmission rate is increased, or a transmission network that is complicated by providing a control connection state analysis path or a control / communication path. It is also useful because it is applicable.

[Brief description of the drawings]

[1] shows the basic configuration of the connection state analyzing function transmission network according to an embodiment of the present invention, (A) changes the connection state analyzing bits output from a specific port of the central node N _i related condition to be transmitted to the next hop node N _{i + 1} subsequent to those obtained by the next stage, (B) is input those obtained by changing the unique address and the state analysis bits from the next hop node N _{i + 1} (C) relates to a state in which the output port number information and the central node _Ni are returned to the central node _Ni.
Another next node N _{i + 2} (next node N _{i + 1}
(Following the next stage) is a state in which the connection state analysis bit is further manipulated and changed.

FIG. 2 shows an example of a conventional transmission network.

[Explanation of symbols]

1,10 transmission network 2 information processing device N _i -N _{i + n} node

Claims (1)

(57) [Claims] The information includes a transmission network including a central node and connecting a plurality of nodes each having a unique address and a predetermined number of ports, and an information processing device connected to the central node. A processing device is a transmission network with a connection state analysis function for transmitting a connection state analysis bit to the plurality of nodes in a time-division multiplexing manner, wherein the information processing device is a predetermined node among the plurality of nodes. The operation state of the connection state analysis bit output from the specific port of the predetermined node is changed and transmitted to the next-stage node following the predetermined-stage node, and the unique status returned from the next-stage node is returned. With the connection state analysis function, which sequentially repeats the operation of receiving the address information and the port number information of the port that has input / output the changed connection state analysis bit. Transmission network.