KR20030060194A - Method for managing quality of service in internet protocol differentiated service network - Google Patents

Abstract

PURPOSE: A method for managing QoS(Quality of Service) in an IP differentiated service network is provided to implement each component in table type of MIB(Management Information Base) or PIB(Policy Information Base), thereby enabling a network manager to manage network equipment through an SNMP(Simple Network Management Protocol) or a COPS(Common Open Policy Service). CONSTITUTION: Information-based tables(32,34,36) are connected to one another by corresponding to internal components of a network equipment where data packets pass through. Entry reference enable fields are added to each of the information-based tables(32,34,36) as attributes in order to distinguish whether entries are referred to the tables(32,34,36). A network manager sets control values in each of the entry reference enable fields of the tables(32,34,36) so that the entries are selectively applied to corresponding traffic by being recognized in the network equipment. When the traffic arrives at the network equipment, each of the internal components selectively processes the traffic based on the control values of the entries.

Description

Quality of Service Management in Internet Protocol Differentialization Service Networks {METHOD FOR MANAGING QUALITY OF SERVICE IN INTERNET PROTOCOL DIFFERENTIATED SERVICE NETWORK}

The present invention relates to a method for improving service quality in an internet protocol network, and more particularly, to a method for increasing efficiency of quality of service (QoS) management in an internet protocol network providing a differentiated service.

The Internet is gradually evolving into a network that can meet the various needs of users. In terms of services, the traditional Internet has provided only one best-effort service. However, in order to meet the various service needs of the Internet users, it must be able to provide the quality of service (QoS) guaranteed by the Internet. At present, various studies are being conducted worldwide to provide various services and guaranteed QoS in the Internet. The IETF, the Internet standardization organization, presents several service models and mechanisms for providing QoS based on user requirements on the Internet. The most notable among these are IntServ (Integrated Service) and DiffServ (Differentiated Service). IntServ (Integrated Service) provides end-to-end resources by using signaling protocol (RSVP) to reserve resources to provide QoS to users. However, scalability issues are emerging because resources must be reserved for each flow. However, instead of reserving resources per flow, DiffServ (Differentiated Service) classifies data packets according to the QoS required by the user. Forward mechanisms to solve the problem of scalability by providing differentiated services to users. In order to provide a differential service, a new differentiated service router (hereinafter referred to as a "DS router") for providing a service defined by DiffServ to each Internet node must be defined. In order to manage them, a MIB (Management Information Base) for expressing their information should be defined. Based on this, the DiffServ management system operates by monitoring the configuration and current state of the DS router.

When a user transmits data packets, a network administrator may allow the traffic to arrive at the destination with a guaranteed level of QoS so that the data packets pass through an internal component of a network device, such as a DS router. The configuration must be properly configured. To do this, the network administrator uses an Simple Network Management Protocol (SNMP) or Common Open Policy Service (COPS) to enter an entry into a Management Information Base (MIB) or a Policy Information Base (PIB) table in a network device through which data packets pass. It will add, delete, and change entries. The present invention is applied when the network administrator performs this task.

DiffServ (Differentiated Service) is composed of the following components (components).

Classifier component

Meter component

Action component

Marker

Counter

Drop component

Queue component

Scheduler

The network manager configures the above components appropriately to provide a desired level of QoS for the traffic transmitted by the user. Traffic transmitted by the user is transmitted through each component in the network equipment as shown in FIG. 1. The network equipment 10 of FIG. 1 includes a classifier component 12, a meter component 14, an action component 16, a drop component 18, and a queue table. Components such as (Queue component) 20 are included. In FIG. 1, the arrow direction means a direction in which a data packet may be progressed.

In order to allow network administrators to manage network equipment that provides DiffServ (Differentiated Service) through SNMP or COPS, each MIB (if managed through SNMP) or It is implemented in the form of a table of PIB (when managed through COPS). Referring to FIG. 2, fields of a MIB or PIB table corresponding to each component, such as a classifier table 22, a meter table 24, and a queue table 26 ( Among the fields), there is an attribute 'Next' indicating the next component to which data is to be sent, so that a connection relationship as shown in FIG. 1 can be established.

The network manager uses SNMP or COPS in the MIB or PIB table corresponding to each component through which the table passes, as shown in FIG. 1, to apply a new policy to the network device to be applied to specific traffic. Will create new entries. As a result, the network equipment handles the traffic as it arrives, referring to the corresponding entry in each of the tables to which it is connected. If the traffic no longer needs to receive a certain level of service, the network administrator deletes the entry.

If a specific QoS configuration that a network administrator applies to a device must only take effect during a certain time frame, or if it must only take effect when a specific event occurs, then the network administrator must There is a problem of frequently adding or deleting a specific entry (SNMP or COPS operation) to all applicable tables whenever necessary.

Accordingly, an object of the present invention is to provide a management method for improving an inefficient configuration method that may occur in the prior art.

1 is a block diagram of a DiffServ (Differentiated Service) block,

2 is a table of each component of each MIB (if managed through SNMP) or PIB (if managed through COPS) so that a network administrator can manage network equipment providing DiffServ through SNMP or COPS. Drawings implemented in form,

FIG. 3 is a diagram illustrating a configuration of each MIB (if managed through SNMP) or PIB (COPS) so that a network manager can manage network equipment providing DiffServ through SNMP or COPS according to an embodiment of the present invention. When implemented through the table).

In accordance with the above object, the present invention provides a service quality management method in an internet protocol differential service network,

In each of the information base tables that correspond to each of the internal components of the network equipment through which the data packets pass, so that the traffic can reach its destination with a guaranteed level of quality of service, the associated table for processing the traffic. Adding an entry reference field as an attribute to distinguish between entry references;

Setting a control value in an entry reference field of each of the based tables under the control of the network manager so that an entry of the information based table is recognized by a network device and selectively applied to corresponding traffic;

When the traffic arrives at the network equipment, each of the internal components is configured to selectively process the traffic based on an entry reference field control value of a corresponding entry of each information base table connected thereto. It is done.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same elements in the figures are represented by the same numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

FIG. 3 is a diagram illustrating a configuration of each MIB (if managed through SNMP) or PIB (COPS) so that a network manager can manage network equipment providing DiffServ through SNMP or COPS according to an embodiment of the present invention. The table is implemented in the form of a table).

According to an embodiment of the present invention, the following attributes are newly added to the MIB or PIB table corresponding to each component of DiffServ (Differentiated Service) as shown in FIG. 3.

Object Name: IsEnable

-Object Type: INTEGER (0 → Disable, 1 → Enable)

The IsEnable field 30 is newly added as an attribute to each of the MIB or PIB tables corresponding to each component of the network equipment that the data packets pass through to ensure that traffic arrives at its destination with a guaranteed level of quality of service. This is an entry reference field that allows the device to decide whether or not to refer to an entry in the table to handle specific traffic.

Referring to FIG. 3, according to an embodiment of the present invention, attributes of MIB or PIB table corresponding to each component of DiffServ (Differentiated Service), Index, .., Next are, for example, a classifier table. (32), there is a newly added IsEnable field 30 in the attributes of the meter table 34 and the queue table 36.

Hereinafter, an operation according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 1 and 3. In the embodiment of the present invention, it is assumed that the network manager adds new entries to specific components in order to provide a certain level of QoS to specific traffic and then connects each other as shown in the example of FIG. 3. Referring to FIG. 3, fields of a MIB or PIB table corresponding to each component, such as a classifier table 32, a meter table 34, and a queue table 36, may be used. Since there is an attribute 'Next' field indicating the next component to which data is to be sent, a connection relationship as shown in FIG. 3 can be established.

In order for the entry to be recognized by the network equipment and applied to the corresponding traffic, the network administrator sets the value of the IsEnable field 30 of each corresponding entry to "1". If a particular QoS component should be effective only at a specific time period or if a specific event should be effective, the value of the IsEnable field 30 of each corresponding entry is set to "1". . The network manager also sets the value of the IsEnable field 30 to " 0 ", as shown in FIG. 3, to prevent the specific QoS configuration applied by the network manager to the equipment. If the traffic is not needed for a long time, the entries may be deleted.

When the table configuration is changed according to an embodiment of the present invention, when the network equipment refers to the entries of the table of each component, the entries whose IsEnable field 30 of the table of each component is set to "0" are ignored. Done. In addition, when the ignored entry is desired to be used again, the network administrator sets the IsEnable field 30 "1" of the entry. Accordingly, when traffic arrives at the network equipment, each of the components of the network equipment 10 may be connected to each MIB or PIB table to which it is connected, for example, the classifier table 32 of FIG. The traffic is selectively handled based on the value set in the IsEnable field 30 of the corresponding entry in the queue tables 36. As a result, the network administrator simply wants to delete the specific entry or does not add a new entry. You can do your work.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

As described above, according to the present invention, a network administrator deletes or adds a new entry when a specific QoS configuration must be effective only at a specific time period or when a specific event must be valid. It allows you to simply do what you want without having to do it.

Claims (1)

In the service quality management method in the Internet protocol differential service network, In each of the information base tables that correspond to each of the internal components of the network equipment through which the data packets pass, so that the traffic can reach its destination with a guaranteed level of quality of service, the associated table for processing the traffic. Adding an entry reference field as an attribute to distinguish between entry references; Setting a control value in an entry reference field of each of the based tables under the control of the network manager so that an entry of the information based table is recognized by a network device and selectively applied to corresponding traffic; When the traffic arrives at the network equipment, each of the internal components is configured to selectively process the traffic based on an entry reference field control value of a corresponding entry of each information base table connected thereto. Quality Management Method in Internet Protocol Differentialization Service Network.