The Simulator of SHR Telecommunications Network

Abstract

The SHR network is the telecommunications network of new generation with the high bandwidth and reliability. Along with the new network, an associated telecommunications network management system (TNMS) must also be built, cooperating with the OAM functions of network to completely ensure the reliability and high-quality of services. To test the functionality of TNMS, a testing environment of SHR network is required to provide the OAM operations and the associated network operations, including the normal and the abnormal (such as the protection switch on failure or shutdown of network equipment.) The testing environment is better to use a simulator of network rather than a physical one, where the operations of network are easier to control, observe, thus test. Besides, when the network is under construction, the fault and configuration management operations can only be provided by the simulator but for testing. Therefore, in this paper, we design a SHR network simulator for the testing of TNMS. The simulator is composed of I ) NESSs each of which simulates a central office and its associated network elements (NEs) and agents, 2) a herald which responds to exchange the management information with TNMS, and 3 ) a network event generator in which network mangers control the operations of NE manually. Each NESS is designed to be a process of workstation, and the herald and the network event generator are applications of PCs in a network environment underlying the TCP/IP. The simulator has been implemented and successfully used to test a fault management system, which is a king of TNMS.