Collective monitor and control system for plural networks

• US 6,795,446 B2
• Filed: 11/17/1998
• Issued: 09/21/2004
• Est. Priority Date: 03/05/1998
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Matsumoto, Tsuyoshi, Amari, Hidetoshi
• Primary Examiner(s): Ton, Dang
• Assistant Examiner(s): TRAN, PHUC H
• Application Number:
  US09/193,628
• Publication Number:
  US 20030202464A1
• Time in Patent Office: 2,135 Days
• Field of Search: 370/258, 370/460, 370/401, 370/402, 370/403, 370/404, 370/405, 370/406, 370/452, 370/466, 370/474, 370/217, 370/222, 370/223, 370/224, 370/230, 370/235, 370/236.1, 370/236.2, 370/241.1
• US Class Current: 370/404
• CPC Class Codes: H04J 3/085 for ring networks, e.g. SDH/SONET rings, self-healing rings, meashed SDH/SONET networks
• CPC Class Codes: H04J 3/14 Monitoring arrangements for SDH/SONET rings H04J3/085
• CPC Class Codes: H04J 3/1617 carrying packets or ATM cells
• CPC Class Codes: H04L 41/00 Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
• CPC Class Codes: H04L 41/344 Out-of-band transfers

Abstract

A collective monitor and control for plural networks, in which plural networks remotely located in each other can be collectively monitored, is provided. The collective monitor and control system for plural networks includes independent plural networks, each having plural nodes formed into a ring configuration, transmission paths connecting the plural networks and passing only monitor and control data, and a network service processor connected to one node of the plural networks, the one node connected to the network service processor having a switch circuit for broadcasting the monitor and control data received from one route to other routes linked to the one node.

Claims

1. A collective monitor and control system for plural networks, comprising:

independent plural networks, each having plural nodes formed into a closed ring configuration;

a network service processor connected to only one node of only one of the plural networks; and

a transmission path connecting between the one node connected to the network service processor and each node of remaining plural networks and passing only monitor and control data therebetween,

the one node connected to the network service processor having a switch circuit for broadcasting the monitor and control data received from one route to other routes directed to the each node of remaining independent plural networks,

wherein the monitor and control data is taken into a time slot on a specific location of a section over head (SOH) of synchronous digital hierarchy (SDH) format, which is transmitted through the transmission path.

2. The system according to claim 1, wherein the one node has a packet extracting section assembling data transmitted from all routes into a predetermined packet, and

the switch circuit includes a buffer circuit, in which packets input from all routes and assembled in the packet extracting section are written and from which the packets are read out in the order of input.

3. The system according to claim 1, wherein the one node further includes mask circuits on the input side of the buffer circuit corresponding to all routes, and the mask circuits regulate and control packets input from optional routes.

4. A collective monitor and control system for plural networks, comprising:

independent plural networks, each having plural nodes formed into a ring configuration by a first transmission path transmitting monitor and control data, which is inserted in a time slot of a specified location of a section over head (SOH) having a synchronous digital hierarchy (SDH) format;

a second transmission path connecting the independent plural networks, and transmitting only monitor and control data with a format different from the synchronous digital hierarchy (SDH) format; and

a network service processor, connected to one node, which is connected to the second transmission path, of the independent plural networks.

wherein the one node includes a packet extracting section, which extracts the monitor and control data of the time slot of the specific location of the section over tread (SOH) having the synchronous digital hierarchy (SDH)) format, and reassembles a packet, a header analysis section judging whether or not the packet is addressed to the own node according to a destination address in the over head of the packet reassembled in the packet extracting section, an interface section for transmitting the monitor and control data to the network service processor when the packet is addressed to the own node, and a packet switching section broadcasting the packet reassembled to the packet control data and the network, to which the node is belonging.

5. The system according to claim 4, wherein the one node further includes a converting section assembling the monitor and control data input from the second transmission path for transmitting only the monitor and control data into a packet having the same format of the packet reassembled in the packet extracting section, and

wherein the packet switching section includes a buffer circuit, to which the packet reassembled in the packet extracting section and the packet assembled in the converting section are written and read out in an order of input and commonly transmits outputs from the buffer circuit to the plural networks via the second transmission path for transmitting only the monitor and control data.

6. The system according to claim 5,

wherein the packet switching section further includes buffer sections provided correspondingly to ports, which are required for the first and second paths and a connection to the network service processor.

7. The system according to claim 6,

wherein the packet switching section includes mask circuits, which are provided respectively between each of the ports and each of the buffer sections and, which regulate packets input from an optional transmission path.