KR20050002343A - System and method for managing asynchronous transfer mode network - Google Patents

Abstract

The present invention relates to a network management method of an ATM network for managing a topology of physical links, virtual channel (VC) links, and virtual path (VP) -PIPEs in an Asynchronous Transfer Mode (ATM) network. A network management system for an asynchronous transmission mode network according to the present invention includes an ATM switch constituting an ATM network; Network operator receives information about physical link, physical node, and logical link from ATM switch and configures network topology for physical network, network topology for VC link which is logical link, and network topology for VP-PIPE. The network topology for the physical network, the network topology for the VC link as a logical link, and the network topology for the VP-PIPE It is characterized in that it comprises a network management system so that the physical link, VC link, and VP-PIPE can be distinguished when providing a single view. According to the present invention, the network operator can easily and effectively monitor the three network topologies as a whole, and optionally select one to monitor as needed, and thus can efficiently process the network. It works.

Description

System and method for managing asynchronous transfer mode network

The present invention relates to a network management system and method of an asynchronous transfer mode (hereinafter referred to as ATM) network, and more particularly, to a physical link, a virtual channel (VC) link, and a virtual path (VP) of an ATM network. The present invention relates to an ATM network management method that manages a topology for -PIPE in a multi-layered manner.

In general, an ATM network management system provides a topology consisting of physical links and physical nodes of an ATM network. In addition, the ATM network management system configures and provides a VC link and a VP link (hereinafter referred to as VP-PIPE) in which only one endpoint is included in the ATM network in order to provide VC connection services in the physical network topology of the ATM network. do.

Network operators can then easily recognize the information about the physical link on the physical network topology. However, the topology information for the logical link for the VC link service is difficult to grasp. This is because the topologies for VC link and VP-PIPE, which are logical links, are not easily provided, and they are often provided in different forms without being correlated with the physical network. Therefore, it is not easy for the network operator to easily grasp the correlation between the physical link and the logical link, and the topology of the physical link and the topology of the logical link cannot be recognized at once. In addition, it is difficult to simultaneously monitor the physical network and the logical network.

In order to solve the above problems, the present invention manages the network topology for the VC link and the VP-PIPE, which are logical links capable of providing VC connection services in ATM networks, as well as network topologies for physical links and physical nodes in a multi-layered manner. It aims to provide it to the network operator.

1 is a schematic configuration of a network management system of an ATM network to which the present invention is applied, and a configuration diagram of physical links, nodes, and logical links of an ATM network.

2 is a diagram illustrating an embodiment of a configuration of a VP-PIPE used in a form similar to a logical link to which the present invention is applied.

3 is a diagram illustrating a multi-layered representation of a method of representing a physical link and a logical link of an ATM network, and a VP-PIPE according to the present invention;

To this end, the network management system of the asynchronous transmission mode network according to the present invention, the ATM switch constituting the ATM network; Network operator receives information about physical link, physical node and logical link from ATM switch and configures network topology for physical network, network topology for VC link as logical link, and network topology for VP-PIPE. The network topology for the physical network, the network topology for the VC link as a logical link, and the network topology for the VP-PIPE A network management system that allows physical links, VC links, and VP-PIPEs to be distinguished when providing a single view; And information about the physical link, the physical node, and the logical link received from the ATM switch, the network topology for the physical network, the network topology for the VC link as a logical link, and the network topology for the VP-PIPE, and And a database storing symbol information for distinguishing a physical link, a VC link, and a VP-PIPE.

The network management method of the asynchronous transmission mode network according to the present invention includes: a first process of receiving information on a physical link, a physical node, and a logical link from an ATM switch and storing the information in a database of the network management system; In the network management system, the network topology for the physical network, the network topology for the VC link, which is the logical link, and the network topology for the VP-PIPE are respectively used by using information about the physical links, physical nodes, and logical links of the database. Constructing a second process; And a network topology for the physical network, a network topology for the VC link, which is a logical link, and a network topology for the VP-PIPE, by distinguishing as symbols for the physical link, the VC link, and the VP-PIPE in the network management system. It characterized in that it comprises a third process of providing a view of the.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a schematic diagram of a network management system of an ATM network to which the present invention is applied, and a diagram of physical links, nodes, and logical links of an ATM network. A network management system 12 to provide, an ATM switch 14 constituting a network in the management area a of the network management system 12, and a database 13 storing information necessary for network management.

The Permanent Virtual Circuit (PVC) provided by such an ATM network can be divided into two types: VP and VC. The network management system 12 obtains physical link and node information and logical link information from the ATM switcher 14, thereby providing ATM. In the network (a), logically, the VP layer network and the VC layer network are configured as shown in FIG. 1. According to the MO (Managed Object) definition for the ATM network, the VP layer network is composed of physical links and the VC layer network is composed of VC links, which are logical links.

Specifically, the VP layer network is composed of a VP link 20 that is configured between physical connections through ports of the ATM exchanger 14, and provides a VP connection service through the VP link 20. . The VP connection set at this time is composed of a VP connection endpoint (VP CTP) 17 of the VP connection configuration information. The VP layer network includes a VP trail 15 and a VP trail termination point (VP TTP) 16, and the VP trail 15 includes a VC link for constructing a VC network in the VC network. 18), the VP and VC networks can be configured through the VP and VC networks.

Figure 2 is an embodiment of the configuration of the VP-PIPE used in a form similar to the logical link to which the present invention is applied, one VP trail end point 21 of the VP connection is present in the ATM network and the other VP trail end point ( 23) shows the type of VP-PIPE existing in a router outside the ATM network.

With this VP-PIPE, the VC connections 22 are as if they were connected directly to the router, and the trail endpoint 24 of the VC connection is also in the router. In this way, VP-PIPE plays a similar role as VC link.

As described above, the network management system 12 manages the physical network and the logical network as described above, provides a PVC service, and operates and manages the network. The above information is taken from each ATM switch 14 and stored in the database 13.

3 illustrates a multi-layered representation of a method of expressing a physical link and a logical link of an ATM network, a VC link, and a VP-PIPE according to the present invention.

The physical network topology 38 of the ATM network is composed of an ATM switch 31 and a physical link 33. The network topology 37 for the VP-PIPE is composed of the VP-PIPE 34 based on the ATM switch (node), and the network topology 36 for the logical link VC link is the ATM switch (node) and the VC. It consists of a link 35.

For these three network topologies 36, 37, and 38, the network topology to be provided to the network operator 11, respectively, will be briefly modified based on the connection relationship between the node and the link, as shown in FIG. Likewise, the network topology 41 for the physical network, the network topology 40 for the VP-PIPE, and the network topology 39 for the VC link may be represented. At this time, in order for the network operator 11 to easily recognize the type of link for each topology, the physical link symbol 44, the logical link symbol 42, and the VP-PIPE symbol 43 for each link type are centered on the link. Mark it to make it easier to recognize what kind of link it is.

The network management system 12 provides these network topologies in multiple layers to the network operator 11 in a single view so that the network operator 11 can select and monitor one of three network topologies as needed. For example, when the network operator 11 selects the network topology 39 for the VC link, the VC links 35 appear based on the nodes. When the network operator 11 selects the network topology 40 for the VP-PIPE, The VC links 35 disappear and only the VP-PIPEs 34 appear based on nodes. Similarly, selecting the network topology 41 for the physical network disappears the VP-PIPE 34 and only the physical links 33 appear based on the nodes. When all three network topologies are selected, the links overlap each other. At this time, a symbol indicating the type of link in the center of the link recognizes what kind of link the link is.

As described above, the present invention provides a multi-layered representation of the topology of the physical link, the topology of the logical link, and the topology of the VP-PIPE for the network topology of the ATM network. The overall topology can be easily recognized and effectively monitored, and if necessary, one can be selectively monitored to monitor the network, thereby effectively processing the network.

Claims (4)

An ATM exchanger constituting an ATM network; By receiving information about physical link, physical node, and logical link from ATM switch, it configures network topology for physical network, network topology for VC link which is the logical link, and network topology for VP-PIPE, respectively. Providing a network operator in multiple layers and distinguishing the symbols as symbols for the physical link, the VC link, and the VP-PIPE, a network topology for the physical network, a network topology for the VC link that is the logical link, and A network management system for distinguishing between the physical link, the VC link, and the VP-PIPE when providing a network topology for the VP-PIPE in one view; And Information on the physical link, the physical node, and the logical link received from the ATM switch, the network topology for the physical network, the network topology for the VC link that is the logical link, and the network topology for the VP-PIPE. And a database storing information and symbol information for distinguishing the physical link, the VC link, and the VP-PIPE. The method of claim 1, The VP-PIPE may be a VP link in which one VP trail end point exists in the ATM network and the other VP trail end point exists in a router outside the ATM network with respect to the VP connection of the ATM network. Network management system. A first step of receiving information on a physical link, a physical node, and a logical link from an ATM switch and storing the information in a database of a network management system; In the network management system, the network topology for the physical network, the network topology for the VC link, which is the logical link, and the network for the VP-PIPE, using the information on the physical link, the physical node, and the logical link of the database. A second step of constructing each topology; And In the network management system, the physical link, the VC link, and the VP-PIPE are distinguished as symbols, the network topology for the physical network, the network topology for the VC link that is the logical link, and the VP-PIPE. And a third process of providing a network topology for a single view. The method of claim 3, wherein The VP-PIPE may be a VP link in which one VP trail end point exists in the ATM network and the other VP trail end point exists in a router outside the ATM network with respect to the VP connection of the ATM network. How to manage your network.