WO2016074362A1 - Data packet distribution method, device, and broadband access device - Google Patents

Abstract

Disclosed is a data packet distribution method, device, and broadband access device, and the method comprises: for each line card of the broadband access device, determining in a round-robin way respectively the target user interface of the downlink data packet to be configured in the user interfaces configured in each line card, wherein one line card at most has one target user interface currently, and the number of the user interfaces configured for the line card with low-speed interface is greater than the number of the user interfaces configured for the line card with high-speed interface; for the target user interface of each line card, initiating a scheduling application for requesting to configure the downlink data packet; selecting the line card in the broadband access device in a round-robin way, and responding to the scheduling application initiated by the selected line card, so that the target interface of the selected line card forwards the downlink data packet after the interface is configured with the downlink data packet .

Description

Method and device for transmitting data packet and broadband access device Technical field

The present invention relates to the field of logic control, and in particular, to a method and an apparatus for transmitting a data packet, and a broadband access device.

Background technique

The broadband access device is mainly composed of a control board and a plurality of line cards, and each line card has multiple user ports for the downlink direction (the number of user ports of one line card can be flexibly set according to service requirements).

When the data traffic is delivered, the broadband access device first buffers the data traffic sent from the upstream, and then configures the data packet to be sent to each user port in a polling manner, and the data packet configured by the user port is sent to the user side. . The polling method ensures that each user port can allocate bandwidth resources fairly. However, the user port of the line card of the current broadband access device is different for the bandwidth requirement. For example, the access mode is the maximum bandwidth of the user port on the fiber-optic line card, which is obviously much larger than the user port of the copper line card, and the control board allocates the size of the data packet required for the user port to be delivered once. It is fixed, so the polling method obviously cannot reasonably utilize the bandwidth requirements of each line card user port.

In this regard, the imaginable solution is to implement a differentially configured data packet for different bandwidth line cards in a logically more complex weighted round-robin scheduling algorithm. However, this method requires more logical resources and is difficult to implement.

In addition, regardless of the polling mode or the weighted round-robin scheduling mode, when the broadband access device only has a small number of line cards inserted, and there are only a small number of users on the user ports on the line cards (such as remote areas in the early morning hours, the number of Internet users is relatively high. Less), the user port may get too much bandwidth resources and exceed the rate carrying capacity (that is, the high frequency of the control board is allocated to a user port), causing packet loss. The usual practice is to perform traffic shaping and rate limiting on user ports, but it also requires a lot of logic control, which takes up a lot of logical resources.

Summary of the invention

The embodiment of the invention provides a method for sending a data packet, a device, and a broadband access device, which can allocate bandwidth resources according to the performance requirements of the line card to which the user port belongs, by using only two logically simple polling mechanisms.

To solve the above technical problem, an embodiment of the present invention provides a method for sending a data packet, including:

For each line card of the broadband access device, in the polling mode, respectively, the target user port of the downlink data packet to be configured is determined in the user port configured by each line card; wherein one line card currently has only one at most The target user port, and the number of user ports configured on the line card of the low speed port is greater than the line card of the high speed port;

Initiating a request for scheduling a downlink data packet for a target user port of each line card;

In the polling mode, the line card of the broadband access device is selected, and the scheduling request initiated by the selected line card is responded to, so that the target port of the selected line card is configured to the downlink data packet, and then the downlink data packet is performed. Forward.

Optionally,

For each line card of the broadband access device, in a polling manner, a target user port of the downlink data packet to be configured is determined in each of the user ports configured by each line card, including:

Each line card of the broadband access device selects a user port configured by the line card in a polling manner;

Each line card of the broadband access device determines whether there is a downlink data packet to be configured for the selected user port, and if so, determines the selected user port as the target user port, and if not, polls the line card. The next user port configured.

Optionally,

For each line card of the broadband access device, in a polling manner, respectively, a target user port of the downlink data packet to be configured is determined in the user port configured for each line card, and further includes:

Each line card of the broadband access device starts its own timer to determine the time after determining the respective target user ports;

Among them, each line card of the broadband access device prohibits polling the next user port before the respective timers have not reached the preset time.

Optionally,

In the polling mode, the line card of the broadband access device is selected, and the scheduling request initiated by the selected line card is responded to, so that the destination port of the selected line card is forwarded to the downlink data packet after being configured to the downlink data packet. ,include:

The control board selects a line card of the broadband access device in a polling manner;

The control board determines, according to the scheduling application corresponding to the selected line card, the target user port of the selected line card, and configures a downlink data packet for the target user port;

The control board cancels the scheduling request corresponding to the selected line card, and re-selects the next line card of the broadband access device in a polling manner.

Optionally,

The scheduling request corresponding to each line card carries the port description information of the target user port, and the packet description information of the downlink data packet that needs to be configured on the target user port;

The control board determines the target user port of the selected line card according to the scheduling application corresponding to the selected line card, and configures a downlink data packet for the target user port, including:

The control board determines, according to the port description information of the scheduling application corresponding to the selected line card, the target user port of the selected line card;

The control board retrieves the delivered data packet that needs to be configured on the target user port of the selected line card from the cached data of the broadband access device according to the package description information of the scheduling application corresponding to the selected line card;

The control board configures the acquired downlink data packet to the target user port of the selected line card.

A broadband access device comprising a plurality of line cards and a control board, wherein:

Each line card includes: a polling scheduling module, configured to determine, in a polling manner, a target user port of a downlink data packet to be configured in a user port of the line card to which the line card belongs; wherein one line card currently has at most one a target user port, and the number of user ports of the line card configured by the low speed port is greater than the line card of the high speed port; and the initiating module is configured to initiate a scheduling request to the control board for the target user port of the line card to which the line card belongs, the scheduling Applying for the requesting control board to configure a downlink data packet for the target user port of the line card to which the initiating module belongs;

The control board includes: a polling configuration module, configured to select a line card of the broadband access device in a polling manner, and complete a scheduling application initiated by the selected line card, so that the target port of the selected line card is obtained. After the downlink data packet is configured, the downlink data packet is forwarded.

Optionally,

The polling scheduling module includes:

The first polling sub-module is configured to select a user port of the line card to which the first polling sub-module belongs in a polling manner, and determine that the sub-module does not exist in the selected user port. After the packet, polling the next user port of the line card to which the first polling submodule belongs;

a judging sub-module, configured to determine whether there is a downlink data packet to be configured on the user port selected by the polling sub-module;

The first determining sub-module is configured to determine, when the user port selected by the polling sub-module is determined by the determining sub-module to be a downlink data packet that needs to be configured, determine the user port as a target user port.

Optionally,

The first polling sub-module is further configured to: after the first determining sub-module determines the target user port, start a timer to perform timing, and prohibit polling before the timer timing does not reach the preset time. A user port.

Optionally,

The polling configuration module includes:

a second polling sub-module, configured to select a line card of the broadband access device in a polling manner;

The configuration sub-module is configured to determine a target user port of the selected line card according to the scheduling application sent by the line card selected by the second polling sub-module, and configure the delivered data for the target user port. package;

The second polling sub-module is further configured to: after the configuration sub-module configures the downlink data packet for the target user port of the line card selected by the second polling sub-module, re-polling , select the next line card of the broadband access device.

Optionally,

Each scheduling application carries the port description information of the target user port of the corresponding line card, and the packet description information of the downlink data packet that needs to be configured on the target user port;

The configuration submodule includes:

a determining unit, configured to determine, according to the port description information of the scheduling application sent by the line card selected by the second polling submodule, the target user port of the selected line card;

a calling unit, configured to retrieve, according to the package description information of the scheduling application sent by the line card selected by the second polling submodule, the target of the selected line card from the cached data of the broadband access device The downstream data packet that needs to be configured on the user port;

And a configuration unit, configured to configure, by the calling unit, the downlink data packet to be sent to the target user port of the line card selected by the second polling submodule.

A data delivery device includes:

The first polling processing module is configured to determine, for each line card of the broadband access device, a target user port of the downlink data packet to be configured in each of the user ports configured by each line card in a polling manner; A line card currently has only one target user port at a time, and the number of user ports configured on the line card of the low speed port is greater than the line card of the high speed port;

a scheduling application module, configured to initiate a request for scheduling a downlink data packet for a target user port of each line card;

The second polling processing module is configured to select a line card of the broadband access device in a polling manner, and respond to the scheduling request initiated by the selected line card, so that the target port of the selected line card is configured to the downlink data packet. After that, the downlink packet is forwarded.

The embodiment of the invention further provides a computer readable storage medium storing program instructions, which can be implemented when the program instructions are executed.

In the solution of the embodiment of the present invention, the polling mode between the line cards fairly waits for the completion of the scheduling application, and the plurality of user ports in the same line card are equally waiting in the polling manner to be confirmed as belonging. The only target user port for the line card. However, the number of user ports of the high-speed port line card configuration is smaller than that of the low-speed port line card. After a period of time, the user port of the high-bandwidth line card can There are more chances to be identified as the target user port so that it can be assigned to downstream packets more times. In this way, the user port of the high-bandwidth line card gets more bandwidth resources than the user port of the low-bandwidth line card. It can be seen that the method in this embodiment can allocate bandwidth resources according to the performance requirements of the line card to which the user port belongs, only through two logically simple polling mechanisms.

BRIEF abstract

FIG. 1 is a schematic diagram of steps of a method for sending a data packet according to an embodiment of the present invention;

2 is a schematic diagram of a logical relationship of a broadband access device in a method for sending a data packet according to an embodiment of the present invention;

3 is a schematic flowchart of determining a target port by a line card in a polling manner according to a method for sending a data packet according to an embodiment of the present invention;

4 is a flow diagram of a process of configuring a downlink data packet of a target port of a line card in a polling manner in a method for sending a data packet according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a broadband access device according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a device for sending a data packet according to an embodiment of the present invention.

Preferred embodiment of the invention

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

As shown in FIG. 1 , an embodiment of the present invention provides a method for sending a data packet, including:

Step 11: For each line card of the broadband access device, determine, in a polling manner, a target user port of the downlink data packet to be configured in each user port configured by each line card; wherein one line card is currently the most There is only one target user port, and the number of user ports configured on the line card of the low speed port is greater than the line card of the high speed port;

Step 12: Initiating a scheduling application requesting configuration data packet for a target user port of each line card;

Step 13: In the polling mode, select the line card of the broadband access device, and respond to the scheduling request initiated by the selected line card, so that the target port of the selected line card is configured to the downlink data packet, and then the downlink data is configured. The package is forwarded.

As can be seen from the above description, in the method of the embodiment, the polling mode between the line cards fairly waits for the completion of the scheduling application, and the user ports in the same line card also wait for the fairness in the polling manner. Confirm as the only target user port of the line card to which it belongs. However, the number of user ports of a high-bandwidth line card configuration is smaller than that of a low-bandwidth line card. After a period of time, the user port of the high-bandwidth line card can have more chances to be identified as the target user port, thereby enabling more times. The ground is assigned to the downstream packet. In this way, the user port of the high-bandwidth line card gets more bandwidth resources than the user port of the low-bandwidth line card. It can be seen that the method in this embodiment can allocate bandwidth resources according to the performance requirements of the line card to which the user port belongs, only through two logically simple polling mechanisms.

In addition, in order to ensure the transmission efficiency of downlink data, it should be avoided to determine that there is no user port that needs to forward downlink packets to the user as the target user port. That is, in the above step 11, it may further include:

Step 111: Each line card of the broadband access device selects a configured user port in a polling manner;

Step 112: Each line card of the broadband access device determines whether there is a downlink data packet to be configured for the selected user port, and if yes, determines the selected user port as the target user port, and if yes, polls the next user. Its configured user port.

When a broadband access device has only a small number of line cards inserted, and a small number of user ports are configured on the line card, in order to prevent a user port from being excessively allocated to the downlink data packet, it exceeds the maximum bandwidth limit that can be withstood. In step 111, after determining the respective target user ports, each line card of the broadband access device starts a respective timer for timing; wherein each line card of the broadband access device is clocked in its own timer. Polling the next user port is prohibited until the preset time has elapsed. In this way, even if the current target user port of the line card is configured to the downlink data packet, if the preset time is not reached, the line card will not poll the next user port.

The above step 13 may include:

Step 131: The control board selects a line card of the broadband access device in a polling manner;

Step 132: The control board determines, according to the scheduling application corresponding to the selected line card, the target user port of the selected line card, and configures a downlink data packet for the line card;

Step 133, the control board cancels the scheduling application corresponding to the selected line card, and re-sends the polling In this way, select the next line card of the broadband access device.

Among them, different user ports are connected to different users, so the downlink data packets to be configured are also different. Therefore, on the basis of the foregoing embodiment, the scheduling request corresponding to each line card carries the port description information of the target user port and the packet description information of the downlink data packet that needs to be configured on the target user port;

In the process of performing the foregoing step 132, the control board determines the target user port of the selected line card according to the port description information of the scheduling application corresponding to the selected line card; the control board performs scheduling according to the selected line card. The packet description information of the application, from the cached data of the broadband access device, the configured data packet to be configured by the target user port of the selected line card; and then the downlink data packet configuration that the control board will retrieve Go to the target user port of the selected line card.

The method of this embodiment will be described in detail below in conjunction with an implementation manner.

As shown in FIG. 2, it is assumed that in the implementation manner, the broadband access device has three line cards, that is, the line card 1 of the fiber access mode and the line card 2 and the line card 3 of the copper line access mode. Among them, the line card 1 to the configuration of two user ports, the line card 2 and the line card 3 are allocated only 10 user ports.

Each polling line card determines its own target user port. The detailed steps are as shown in Figure 3, including:

Step A1: Polling starts from the first user port configured locally.

Step A2: Read the value of the local timer to determine whether the time interval has been greater than the preset time from the previous round of polling to the present, and if yes, execute step A3.

Step A3: Clear the timer to 0 and restart the timing.

Step A4: Obtain the information of the current user port that is polled, including whether the user port has a downlink data packet to be configured, and a downlink state of the user port.

Step A5: Determine whether the current user port can forward the downlink data packet to the user. If the current user port has a downlink data packet to be sent, and the downlink corresponding to the current port is normal, it is determined that the current user port can forward the downlink data packet to the user, and then step A6 is performed; if the current user port does not have the downlink data packet, it needs to be sent. If the downlink corresponding to the current port is abnormal, go to step A8.

Step A6: Use the current user port as the target user port, and initiate a scheduling request to the control panel, and then wait for feedback from the control panel.

Step A7: The control board feeds back that the current target client port has configured the downlink data packet, and proceeds to step A8.

Step A8: Poll the next user port.

Step A9: Determine whether the polled current user port is the first user port of the line card. If it is not the first user port, step A4 is performed to determine whether the current user port can send data; if it is the first user port, step A1 is performed.

On the basis of the above, the preset time of the timer can be set according to the maximum bandwidth of the line card, and the preset time of the high bandwidth line card is smaller than the low bandwidth line card.

At the same time, the control board polls each line card for scheduling, including the following steps:

Step B1: Lock the scheduling application initiated by each line card to ensure that there is only one application scheduling for each line card.

Step B2: Polling the first line card, responding to the scheduling request initiated by the line card. The response process includes: determining, according to the scheduling request of the current line card, the target user port and the downlink data packet that the target user port is waiting to forward, and then extracting, from the downlink data buffer in FIG. 2, the downlink data packet that the target user port is waiting to forward, The extracted downstream packets are assigned to the target user port for forwarding.

Step B3: After the data sending module feeds back the downlink data packet allocation, the process proceeds to step B4.

Step B4: feeding back the allocated information to the current line card, so that the current line card performs the above step A2, and at the same time, the control board cancels the current line card to the initiated scheduling application;

Step B5: If the current round line card is not polled, proceed to step B6; if the current line card has been polled, perform step B1 to re-lock all line card scheduling applications and start a new round of scheduling.

Step B6: Poll the next line card.

In summary, the implementation mode allocates bandwidth resources according to the performance requirements of the line card to which the user port belongs, only through two logically simple polling mechanisms.

In addition, as shown in FIG. 5, another embodiment of the present invention further provides a broadband access device, including Multiple line cards and control boards, where:

Each line card includes: a polling scheduling module, configured to: in a polling manner, determine a target user port of a downlink data packet to be configured in a user port of the line card to which the line card belongs; wherein, one line card currently only has a maximum of only There is a target user port, and the number of user ports configured by the line card of the low speed port is greater than the line card of the high speed port; the initiating module is set to: initiate scheduling to the control board of the broadband access device for the target user port of the line card to which it belongs Applying, the scheduling application is used to request the control panel to configure a downlink data packet for the target user port of the line card to which it belongs;

The control board includes: a polling configuration module, configured to: select a line card of the broadband access device in a polling manner, and complete a scheduling application initiated by the selected line card, so that the target of the selected line card is obtained. After the port is configured to the downlink data packet, the downlink packet is forwarded.

The polling scheduling module includes:

The first polling sub-module is configured to: select a user port of the line card to which it belongs in a polling manner, and poll the selected user port after the judging sub-module determines that there is no data packet to be delivered. The user port of the next line card to which it belongs;

The determining sub-module is configured to: determine whether the user port selected by the polling sub-module has a downlink data packet to be configured;

The first determining sub-module is configured to: when the user port selected by the polling sub-module is determined by the determining sub-module to be a downlink data packet to be configured, the user port is determined as the target user port.

After the first determining sub-module determines the target user port, the first polling sub-module starts a timer to perform timing, and prohibits polling the next user before the timer timing does not reach the preset time. port.

Based on the foregoing embodiment, the polling configuration module includes:

The second round of the sub-module module is set to: select a line card of the broadband access device in a polling manner;

The configuration sub-module is configured to: according to the scheduling application sent by the line card selected by the second polling sub-module, determine a target user port of the selected line card, and configure a data packet to be delivered;

The second polling sub-module re-selects the next line of the broadband access device in a polling manner after the configuration sub-module configures the downlink data packet for the target user port of the selected line card. card.

Each of the scheduling applications carries the port description information of the target user port of the corresponding line card, and the packet description information of the downlink data packet that needs to be configured on the target user port;

The configuration submodule includes:

a determining unit, configured to: determine, according to the port description information of the scheduling application sent by the line card selected by the second polling submodule, the target user port of the selected line card;

The calling unit is configured to: according to the package description information of the scheduling application sent by the line card selected by the second polling sub-module, retrieve the selected line card from the cached data of the broadband access device The downlink data packet to be configured on the target user port;

And a configuration unit, configured to: the downlink data packet retrieved by the calling unit is configured to a target user port of the line card selected by the second polling submodule.

The broadband access device of this embodiment corresponds to the method for sending data packets according to the embodiment of the present invention, and the same technical effects can be achieved.

In addition, another embodiment of the present invention further provides a data packet sending device, as shown in FIG. 6, including:

The first polling processing module is configured to: determine, for each line card of the broadband access device, a target user port of the downlink data packet to be configured in the user port configured by each line card in a polling manner; Wherein, one line card currently has only one target user port at present, and the number of user ports configured by the line card of the low speed port is greater than the line card of the high speed port;

The scheduling application module is configured to: initiate a request for scheduling a downlink data packet for a target user port of each line card;

The second polling processing module is configured to: select a line card of the broadband access device in a polling manner, and respond to the scheduling request initiated by the selected line card, so that the target port of the selected line card is configured to downlink data. After the packet, the downlink packet is forwarded.

As can be seen from the above description, in the apparatus of the embodiment, the polling party between the line cards It waits for the completion of the scheduling application fairly, and the user ports in the same line card also wait in a polling manner for the target user port that is confirmed to be the only one of the line cards. However, the number of user ports of a high-bandwidth line card configuration is smaller than that of a low-bandwidth line card. After a period of time, the user port of the high-bandwidth line card can have more chances to be identified as the target user port, thereby enabling more times. The ground is assigned to the downstream packet. In this way, the user port of the high-bandwidth line card gets more bandwidth resources than the user port of the low-bandwidth line card. It can be seen that the method in this embodiment can allocate bandwidth resources according to the performance requirements of the line card to which the user port belongs, only through two logically simple polling mechanisms.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

The method in the embodiment of the present invention allocates bandwidth resources according to the performance requirements of the line card to which the user port belongs, only through two logically simple polling mechanisms.

Claims (12)

A method for delivering a data packet, including: For each line card of the broadband access device, in the polling mode, respectively, the target user port of the downlink data packet to be configured is determined in the user port configured by each line card; wherein one line card currently has only one at most The target user port, and the number of user ports configured on the line card of the low speed port is greater than the line card of the high speed port; Initiating a request for scheduling a downlink data packet for a target user port of each line card; In the polling mode, the line card of the broadband access device is selected, and the scheduling request initiated by the selected line card is responded to, so that the target port of the selected line card is configured to the downlink data packet, and then the downlink data packet is performed. Forward. The method of claim 1 wherein For each line card of the broadband access device, in a polling manner, a target user port of the downlink data packet to be configured is determined in each of the user ports configured by each line card, including: Each line card of the broadband access device selects a user port configured by the line card in a polling manner; Each line card of the broadband access device determines whether there is a downlink data packet to be configured for the selected user port, and if so, determines the selected user port as the target user port, and if not, polls the line card. The next user port configured. The method of claim 2, wherein For each line card of the broadband access device, in a polling manner, respectively, a target user port of the downlink data packet to be configured is determined in the user port configured for each line card, and further includes: Each line card of the broadband access device starts its own timer to determine the time after determining the respective target user ports; Among them, each line card of the broadband access device prohibits polling the next user port before the respective timers have not reached the preset time. The method of claim 1 wherein In the polling mode, select the line card of the broadband access device, and respond to the selected line card to initiate the adjustment. Applying, the target port of the selected line card is forwarded to the downlink data packet after being configured to the downlink data packet, including: The control board selects a line card of the broadband access device in a polling manner; The control board determines, according to the scheduling application corresponding to the selected line card, the target user port of the selected line card, and configures a downlink data packet for the target user port; The control board cancels the scheduling request corresponding to the selected line card, and re-selects the next line card of the broadband access device in a polling manner. The method of claim 4, wherein The scheduling request corresponding to each line card carries the port description information of the target user port, and the packet description information of the downlink data packet that needs to be configured on the target user port; The control board determines the target user port of the selected line card according to the scheduling application corresponding to the selected line card, and configures a downlink data packet for the target user port, including: The control board determines, according to the port description information of the scheduling application corresponding to the selected line card, the target user port of the selected line card; The control board retrieves the delivered data packet that needs to be configured on the target user port of the selected line card from the cached data of the broadband access device according to the package description information of the scheduling application corresponding to the selected line card; The control board configures the acquired downlink data packet to the target user port of the selected line card. A broadband access device comprising a plurality of line cards and a control board, wherein: Each line card includes: a polling scheduling module, configured to determine, in a polling manner, a target user port of a downlink data packet to be configured in a user port of the line card to which the line card belongs; wherein one line card currently has at most one a target user port, and the number of user ports of the line card configured by the low speed port is greater than the line card of the high speed port; and the initiating module is configured to initiate a scheduling request to the control board for the target user port of the line card to which the line card belongs, the scheduling Applying for the requesting control board to configure a downlink data packet for the target user port of the line card to which the initiating module belongs; The control board includes: a polling configuration module, configured to select a line card of a broadband access device in a polling manner, and complete a scheduling application initiated by the selected line card, so that the selected line card is selected After the target port is configured to the downlink data packet, the downlink data packet is forwarded. The broadband access device according to claim 6, wherein The polling scheduling module includes: The first polling sub-module is configured to select a user port of the line card to which the first polling sub-module belongs in a polling manner, and determine that the sub-module does not exist in the selected user port. After the packet, polling the next user port of the line card to which the first polling submodule belongs; a judging sub-module, configured to determine whether there is a downlink data packet to be configured on the user port selected by the polling sub-module; The first determining sub-module is configured to determine, when the user port selected by the polling sub-module is determined by the determining sub-module to be a downlink data packet that needs to be configured, determine the user port as a target user port. The broadband access device according to claim 7, wherein The first polling sub-module is further configured to: after the first determining sub-module determines the target user port, start a timer to perform timing, and prohibit polling before the timer timing does not reach the preset time. A user port. The broadband access device according to claim 6, wherein The polling configuration module includes: a second polling sub-module, configured to select a line card of the broadband access device in a polling manner; The configuration sub-module is configured to determine a target user port of the selected line card according to the scheduling application sent by the line card selected by the second polling sub-module, and configure the delivered data for the target user port. package; The second polling sub-module is further configured to: after the configuration sub-module configures the downlink data packet for the target user port of the line card selected by the second polling sub-module, re-polling , select the next line card of the broadband access device. The broadband access device according to claim 9, wherein Each scheduling request carries port description information of a target user port of its corresponding line card, And packet description information of the downlink data packet that needs to be configured on the target user port; The configuration submodule includes: a determining unit, configured to determine, according to the port description information of the scheduling application sent by the line card selected by the second polling submodule, the target user port of the selected line card; a calling unit, configured to retrieve, according to the package description information of the scheduling application sent by the line card selected by the second polling submodule, the target of the selected line card from the cached data of the broadband access device The downstream data packet that needs to be configured on the user port; And a configuration unit, configured to configure, by the calling unit, the downlink data packet to be sent to the target user port of the line card selected by the second polling submodule. A data delivery device includes: The first polling processing module is configured to determine, for each line card of the broadband access device, a target user port of the downlink data packet to be configured in each of the user ports configured by each line card in a polling manner; A line card currently has only one target user port at a time, and the number of user ports configured on the line card of the low speed port is greater than the line card of the high speed port; a scheduling application module, configured to initiate a request for scheduling a downlink data packet for a target user port of each line card; The second polling processing module is configured to select a line card of the broadband access device in a polling manner, and respond to the scheduling request initiated by the selected line card, so that the target port of the selected line card is configured to the downlink data packet. After that, the downlink packet is forwarded. A computer readable storage medium storing program instructions that, when executed, can implement the method of any of claims 1-5.

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