CN101399816B - A method for dynamically configuring digital subscriber line equipment ports - Google Patents

Abstract

The invention discloses a method for dynamically configuring a digital subscriber line equipment port, which comprises the following steps: an extended communication protocol, wherein the extended communication protocol is used for information exchange between the BRAS and the DSL equipment; the BRAS issues a port configuration request to the DSL equipment, wherein the port configuration request comprises bandwidth configuration information; and the DSL equipment analyzes the port configuration request, modifies the self port configuration according to the bandwidth configuration information, and returns a port configuration response after the configuration is completed, wherein the port configuration response comprises a port configuration result. The invention can realize dynamic configuration adjustment in the DSL device operation process, thereby supporting emerging service functions such as dynamic multicast control, dynamic bandwidth adjustment and the like.

Description

A method for dynamically configuring digital subscriber line equipment ports

technical field

The invention relates to a communication technology, in particular to a method for dynamically configuring Digital Subscriber Line (DSL, Digital Subscriber Line) equipment ports.

Background technique

In the next-generation network based on packet switching and coexistence of multiple services, how to provide corresponding network quality of service (QoS) guarantees for various services with different service quality requirements is a key requirement of the next generation communication network (NGN). It is also a focus of current industry research. ITU-T's E.800 defines QoS as "the combined effect of business performance that determines the user's satisfaction with the service." Further, QoS includes two meanings: business performance and business differentiation. The guarantee of service performance should be end-to-end, continuous, predictable, greater than or equal to the predetermined value, and the key network layer parameters reflecting service performance are delay, jitter and packet loss rate.

In the end-to-end QoS framework, the core issue is how to optimize limited network resources in a network environment with multiple access technologies and multiple management domains to support different QoS requirements of various services. Therefore, the network must be flexible and intelligent enough in terms of resource allocation and business delivery, and it cannot be like the traditional best-effort Internet that is passive and requires end users to adapt.

Therefore, how to control and manage a series of network behaviors according to QoS policies, especially how to effectively control and manage resources, has become a key point for IP networks to provide QoS. Originally, the line bandwidth of DSL equipment was fixed, and the bandwidth was selected when the user opened an account. If the user wants to change the bandwidth (generally increase it), he needs to modify his own bandwidth through the service provider, and it will take effect after several working days.

Contents of the invention

The technical problem solved by the invention is to provide a method for dynamically configuring the ports of digital subscriber line equipment, which can realize the dynamic configuration adjustment during the operation of the DSL equipment.

The technical solution is as follows:

A method for dynamically configuring a digital subscriber line device port, the steps comprising:

(1) Extended communication protocol, the extended communication protocol is used for information exchange between BRAS and DSL equipment;

(2) The BRAS sends a port configuration request to the DSL device, and the port configuration request includes bandwidth configuration information;

(3) The DSL device parses the port configuration request, modifies its own port configuration according to the bandwidth configuration information, and returns a port configuration response after the configuration is completed, and the port configuration response includes a port configuration result.

Further, in step (1), the DSL equipment includes an access point or a Layer 2 switch.

Further, in the step (1), the communication protocol between the BRAS and the DSL equipment is realized by IETF by expanding GSMP v3.

Further, in step (2), the port configuration request further includes: user ID, serial number ID, physical information of the user, OAM test parameters or multicast information.

Further, in step (2), the physical information of the user is used to locate the user for the DSL device, which includes: MAC address, port on the DSL device and PVC information.

Further, in step (3), the port configuration result in the port configuration response includes: user ID, serial number ID, user line information, port configuration result or OAM test result.

Further, in step (3), the user ID is allocated by the BRAS, included in the port configuration request message, and used to locate the return value of the DSL device.

Further, in the step (3), the sequence number ID is included in the port configuration request message of the BRAS, when the DSL receives the port configuration request message of the BRAS, write down the sequence number ID in the message, Perform a configuration operation; when the configuration is completed, fill in the serial number ID into the port configuration response message.

The present invention can realize the dynamic configuration adjustment in the operation process of the DSL equipment, thereby supporting emerging service functions such as dynamic multicast control and dynamic bandwidth adjustment.

The present invention enables the DSL device port to obtain the current actual negotiated rate by dynamically configuring the user bandwidth, and the user can modify the bandwidth without dropping the line during the online process, which takes effect immediately, so that the user can obtain better service experience. At the same time, it can also meet the service requirements of operators.

Description of drawings

Fig. 1 is a schematic diagram of an application scenario of a preferred embodiment of the present invention;

Fig. 2 is a working schematic diagram of a preferred embodiment of the present invention.

Detailed ways

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figure 1, through the extended communication protocol, the bandwidth dynamic configuration is realized between the Broadband Remote Access Server (BRAS, Broadband Remote Access Server) and the Digital Subscriber Line (DSL, Digital SubscriberLine) equipment, so that the DSL equipment port can obtain the current The actual negotiated rate. The DSL device can be an access point (Access Node), and it may be a Layer 2 switch.

The user terminal (PC) is linked to the access point (Access Node) through the gateway (RG), and the BRAS and the Access Node are connected through an asynchronous/Ethernet switch (ATM/Ethernet Switch).

The controller function resides on the BRAS, and the BRAS obtains the current status information of all DSL devices linked to it, and obtains the current bandwidth required by all DSL devices through the status information. When a DSL device needs to adjust its own bandwidth, The BRAS triggers the DSL device to adjust its own bandwidth by sending a command.

The report/execution function resides on the DSL device, and the DSL device transmits its current status information to the BRAS through the report function, and the DSL device triggers and adjusts its own bandwidth through the command sent by the BRAS.

The communication protocol between BRAS and DSL equipment is implemented by the Internet Engineering Task Force (IETF) by expanding the General Switch Management Protocol (GSMP v3, General Switch Management Protocol Version 3), at the IP layer or TCP/UDP layer In this way, regardless of whether the link between the DSL device and the BRAS is Ethernet (Ethernet) or Asynchronous Transfer Mode (ATM, Asynchronous Transfer Mode), the GSMP v3 can be run.

The method for dynamic configuration DSL equipment port of the present invention comprises the following steps:

1. After networking as shown in Figure 1, extend GSMPv3 as the communication protocol between the BRAS and the DSL device.

2. The BRAS sends a port configuration request (Port Configuration Request) to the DSL device, and the port configuration request includes bandwidth configuration information.

3. The DSL device parses the configuration request, and configures the port according to the bandwidth configuration information. After the configuration is completed, it returns a port configuration response (Port Configuration Response), which includes the port configuration result.

Referring to Fig. 2, the specific working process of the present invention will be described in detail.

1. Extend GSMPv3 as the communication protocol between BRAS and DSL equipment.

2. The BRAS sends a port configuration request to the DSL device.

Port configuration requests are generally made in the following situations:

(1) After the user authentication is passed, the BRAS configures the DSL device according to the user speed limit information returned by the remote authentication dial-up user server (RADIUS);

RADIUS is used to provide authentication. When the RADIUS client sends user credentials and connection parameter information to the RADIUS server in the form of RADIUS messages, the RADIUS server verifies the RADIUS client request and returns a RADIUS message response.

(2) The user modifies his own bandwidth;

(3) Need to test operation management and maintenance (OAM, Operation Administration and Maintenance);

(4) The user has enabled services such as multicast.

When the above situation occurs, the BRAS sends a port configuration request to the DSL device where the user is located, and the port configuration request includes the following information:

(1) User ID.

The user ID is generated by the BRAS and brought back by the DSL equipment.

(2) Sequence ID.

The sequence number ID is generated by the BRAS and used for retransmission and other purposes.

(3) User's physical information.

The user's physical information includes MAC address, port on the DSL device, PVC information, etc. The above information is used to locate the user for the DSL device.

(4) Bandwidth configuration information of the user port, where the bandwidth configuration information includes parameters that the DSL device needs to modify bandwidth.

(5) OAM test parameters.

(6) Multicast information.

3. The DSL device parses the port configuration request, performs port configuration, and returns a port configuration response after the configuration is completed.

The port configuration result in the port configuration response generally includes the following information:

(1) User ID.

Generally assigned by the BRAS, included in the port configuration request message, used to locate the return value of the DSL device. The DSL device just copies the field in the port configuration request message.

(2) Sequence ID.

The serial number ID is included in the port configuration request message of the BRAS.

When the DSL receives the port configuration request message from the BRAS, it records the serial number ID in the message and performs configuration operations. After the configuration is completed, retrieve the serial number ID of the configuration command and fill it in the port configuration response message.

(3) Subscriber line information.

(4) Port configuration results.

The port configuration result includes two results, success or failure.

(5) OAM test results.

The OAM test result includes two results, success or failure.

The above describes the normal process of port configuration between the BRAS and the DSL device. When network congestion occurs, the port configuration request or port configuration response will be retransmitted. At this time, the two systems apply the user ID+Sequence ID unique identification command. When receiving an expired port configuration request (the Sequence ID of the current user is greater than the Sequence ID in the message), the end systems directly discard the message without configuration.

Claims (8)

1. the method for a dynamic-configuration port of digital subscriber line device, step comprises:

(1) expanding communication agreement, said communication protocol through expansion is used for the information exchange between BRAS and the dsl device;

(2) said BRAS issues the port arrangement request to said dsl device, comprises band width configuration information in the said port arrangement request;

(3) said dsl device is resolved said port arrangement request, revises self port arrangement according to said band width configuration information, returns port arrangement after configuration is accomplished and replys, and comprises the port arrangement result during said port arrangement is replied.

2. the method for dynamic-configuration port of digital subscriber line device according to claim 1 is characterized in that, in the step (1), said dsl device comprises access point or Layer 2 switch.

3. the method for dynamic-configuration port of digital subscriber line device according to claim 1 is characterized in that, in the step (1), the communication protocol between said BRAS and the dsl device is that IETF realizes through expanding GSMP v3.

4. the method for dynamic-configuration port of digital subscriber line device according to claim 1 is characterized in that, in the step (2), also comprises in the said port arrangement request: ID, sequence number ID, user's physical message, OAM test parameter and multicast information.

5. the method for dynamic-configuration port of digital subscriber line device according to claim 4; It is characterized in that; In the step (2), said user's physical message is used for to the dsl device consumer positioning, and it comprises: MAC Address, the port on dsl device and PVC information.

6. the method for dynamic-configuration port of digital subscriber line device according to claim 1; It is characterized in that; In the step (3), the port arrangement result during said port arrangement is replied comprises: ID, sequence number ID, subscriber line information, port arrangement result and OAM test result.

7. the method for dynamic-configuration port of digital subscriber line device according to claim 6 is characterized in that, in the step (3), said ID is distributed by BRAS, is included in the said port arrangement request message, is used to locate the return value of said dsl device.

8. the method for dynamic-configuration port of digital subscriber line device according to claim 6; It is characterized in that; In the step (3), said sequence number ID is included in the port arrangement request message of said BRAS, when said DSL receives the port arrangement request message of BRAS; Write down the sequence number ID in this message, be configured operation; After configuration is accomplished, said sequence number ID is inserted the port arrangement response message.

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