CN103888303A - Method and device for controlling data messages - Google Patents

Abstract

The invention discloses a data message control method and device, which are applied to an optical network distribution unit, and the optical network distribution unit includes a user port for receiving data messages and a data buffer for caching data messages . A PON port and a spare port for sending data messages read from the data buffer; the method includes: detecting whether the PON port of the optical network distribution unit is offline; The data message read in the device is sent out through the standby port; the data message sent through the standby port is counted; if not, the data message read from the data buffer is passed through the PON port Sending to the optical line terminal through the passive optical splitter, the present invention improves the accuracy of network fault diagnosis, so that the network can be restored quickly.

Description

A data message control method and device

technical field

The present invention relates to the technical field of Ethernet passive optical network, and more specifically relates to a data message control method and device.

Background technique

Ethernet Passive Optical Network (EPON) system is a point-to-multipoint network system, in which multiple optical network distribution units (Optical Network Units, ONU) pass passive optical branching The device is connected to an Optical Line Terminal (OLT). Among them, the ONU mainly includes a user port, a PON port and a data buffer. In the working state, the ONU can receive data packets from the user port and write them into the data buffer, and obtain the time window allocated by the OLT from the PON port. And in the time window, send the data message read from the data buffer to the OLT from the PON port.

However, when the PON port is offline, the ONU cannot send the data message in the data buffer to the OLT through the PON port. At this time, because the data buffer of the ONU is still continuously writing data messages, the current When the PON port goes online again, the existing data packets in the data buffer are invalid data packets. If these data packets are still sent from the PON port to the OLT, additional bandwidth on the line will be occupied.

Therefore, in the prior art, when it is detected that the PON port is disconnected, the ONU will clear all the data packets written in the data buffer and close the user port to prohibit further writing of the data packets. However, in a network system, it is generally necessary to locate network faults based on the statistics of data packets at each node, and the use of the above method will make the statistics of data packets on the nodes of the PON port and user port inaccurate, resulting in network failures. The location of the fault is not accurate, which affects the rapid recovery of the network.

Contents of the invention

In view of this, the present invention provides a data packet control method and device to solve the problem of inaccurate statistics of the number of data packets on the nodes of the PON port or user port in the prior art, resulting in network failures The positioning is inaccurate, and it is a technical problem that affects the rapid recovery of the network.

To achieve the above object, the present invention provides the following technical solutions:

A method for controlling data messages, which is applied to an optical network distribution unit, and the optical network distribution unit includes a user port for receiving data messages, a data buffer for buffering data messages, and a data buffer for sending The PON port and the standby port of the data message read in the data buffer;

The method includes:

Detect whether the PON port of the optical network distribution unit is offline;

If yes, send the data message read from the data buffer through the standby port;

Counting data packets sent through the standby port;

If not, send the data message read from the data buffer through the PON port to the optical line terminal via the passive optical splitter.

Preferably, after the data packets sent through the standby port, the statistics further include:

Detect whether the PON port of the optical network distribution unit is online;

If so, the data message read from the data buffer is sent out from the standby port and switched to be sent by the PON port so as to pass through the passive optical splitter to the optical line terminal;

If not, keep sending the data message read from the data buffer through the standby port.

Preferably, the data message read from the data buffer is switched from being sent by the standby port to being sent by the PON port to the optical line terminal via the passive optical splitter Previously, also included:

It is determined that all data packets satisfying the preset condition are read in the data buffer, and all the read data packets are sent out through the standby port.

Preferably, the determination reads all the data packets meeting the preset conditions in the data cache, specifically:

Detecting the write address of the data message written into the data buffer when the PON port goes online;

It is determined that the read address of the data message for reading the data buffer is the same as the write address.

Preferably, detecting whether the PON port of the optical network distribution unit is offline includes:

Detecting whether the PON port of the optical network distribution unit does not receive an optical signal.

A control device for data messages, which is applied to an optical network distribution unit, and the optical network distribution unit includes a user port for receiving data messages, a data buffer for buffering data messages, and a data buffer for sending The PON port and the standby port of the data message read in the data buffer;

The unit includes:

The first detection unit is used to detect whether the PON port of the optical network distribution unit is offline;

The first sending unit is configured to send the data message read from the data buffer through the backup port when it is detected that the optical network distribution unit is offline;

a first statistical unit, configured to count data packets sent through the standby port;

The second sending unit is configured to send the data message read from the data buffer through the PON port through the passive optical branch when it is detected that the optical network distribution unit is not offline device to the optical line terminal.

Preferably, it also includes:

The second detection unit is used to detect whether the PON port of the optical network distribution unit is online;

The first switching unit is used to send the data message read from the data buffer from the standby port to switch to the PON port when detecting that the PON port of the optical network distribution unit is online. sending to the optical line terminal via the passive optical splitter;

The first holding unit is configured to keep sending the data message read from the data buffer through the standby port when detecting that the PON port of the optical network distribution unit is not online.

Preferably, it also includes:

The first determining unit is configured to determine all the data packets that meet the preset conditions read in the data buffer, and all the read data packets are sent out through the standby port.

Preferably, the first determination unit includes:

The first detection module is used to detect the write address of the data message written into the data buffer when the PON port goes online;

A first determination module, configured to determine that the read address of the data message for reading the data buffer is the same as the write address;

The first sending module is configured to send all the read data packets through the standby port.

Preferably, the first detection unit is specifically configured to detect whether the PON port of the optical network distribution unit has not received an optical signal.

It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a method for controlling data packets, which can be applied to an optical network distribution unit, and the optical network distribution unit includes a spare port. In the method , when detecting that the PON port of the optical network distribution unit is offline, the data message read from the data buffer can be sent out through the backup port, and the data messages sent through the backup port can be counted, so that The network fault can be located according to the data packets counted at the standby port, and since there is no need to close the user port, the network fault can also be located according to the data packets counted at the user port, therefore, the present invention improves the accuracy of network fault determination, Allows the network to recover quickly.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is the structural representation of a kind of EPON network system disclosed by the present invention;

FIG. 2 is a schematic flow diagram of an embodiment of a method for controlling data packets disclosed in the present invention;

FIG. 3 is a schematic flowchart of another embodiment of a method for controlling data packets disclosed in the present invention;

FIG. 4 is a schematic flowchart of another embodiment of a method for controlling data packets disclosed in the present invention;

FIG. 5 is a schematic structural diagram of an embodiment of a data message control device disclosed in the present invention;

FIG. 6 is a schematic structural diagram of another embodiment of a data message control device disclosed in the present invention;

Fig. 7 is a schematic structural diagram of another embodiment of a device for controlling data packets disclosed in the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The embodiment of the present invention discloses a data message control method, which can be applied to an optical network distribution unit;

Wherein, the optical network distribution unit is an integral part of the EPON (Ethernet Passive Optical Network, Ethernet Passive Optical Network) system, see Figure 1, which shows a schematic structural diagram of the EPON system;

As can be seen from Fig. 1, the system can include ONU (Optical Network Units, optical network distribution unit) group 100, passive optical splitter 200 and OLT (Optical Line Terminal, optical line terminal) 300; ONU group 100 includes ONU1 ,ONU2,...,ONUn;

Wherein, each ONU can include a user port for receiving data messages, a data buffer for buffering data messages, a PON port for sending data messages read from the data buffer, and a spare port.

It should be noted that in the EPON network system, in the downstream direction, the OLT can send data packets to each ONU through a passive optical splitter, which is a point-to-multipoint network; and in the upstream direction, each The ONUs all send data packets to the same OLT through the PON port through the passive optical splitter, and multiple ONUs share the same optical fiber between the passive optical splitter and the OLT, which is a multipoint-to-point network.

Fig. 2 discloses a schematic flow chart of an embodiment of a data packet control method, as shown in Fig. 2, the method may include the following steps:

Step 201: Detect whether the PON port of the optical network distribution unit is offline; if so, enter step 202; if not, enter step 204;

Wherein, the disconnection of the PON port of the optical network distribution unit specifically means that the PON port of the optical network distribution unit cannot receive an optical signal. Correspondingly, step 201 may specifically detect whether the PON port of the optical network distribution unit has not received an optical signal, If yes, go to step 202; if not, go to step 204.

Among them, there are many reasons for the disconnection of the PON port, such as the disconnection of the optical fiber between the optical network distribution unit and the optical line terminal, failure of the sending optical module at the opposite end, failure of the receiving optical module at the local end, power failure of the opposite end, etc. wait.

Step 202: Send the data message read from the data buffer through the standby port;

Among them, when the PON port of the optical network distribution unit is offline, the ONU will not be able to send the data message read from the data buffer to the OLT through the PON port. In this case, the user port of the ONU is still flowing received data packets, the received data packets are also continuously written into the data buffer, and the data packets written into the data buffer are invalid messages, therefore, the ONU can continue to read from the data buffer Read the data message in and send the read data message through the standby port without closing the user port.

It should be noted that the data packets sent by the standby port are not transmitted to the optical line terminal, but are directly discarded.

Step 203: Counting the data packets sent through the standby port;

Wherein, counting the data packets sent through the standby port can specifically be: counting the number of data packets sent through the standby port; of course, it is also possible to count the attribute information of each data packet, such as the length of each data packet, etc. and so on; finally, network fault location can be performed according to the statistical results.

Step 204: Send the data message read from the data buffer through the PON port to an optical line terminal via the passive optical splitter.

When the PON port of the optical network distribution unit is not disconnected, it means that the ONU can send the data message read from the data buffer through the PON port to the OLT through the passive optical splitter.

In the embodiment of the present invention, when it is detected that the PON port of the optical network distribution unit is offline, the data message read from the data buffer can be sent out through the backup port, and the statistics sent through the backup port can be counted. data packets, so that network faults can be located according to the data packets counted at the standby port, and because there is no need to close the user port, network faults can also be located according to the data packets counted at the user port. Therefore, the present invention improves network The accuracy of fault determination enables the network to recover quickly.

Another embodiment of the present invention also discloses a data message control method, as shown in Figure 3, the method may include the following steps:

Step 301: Detect whether the PON port of the optical network distribution unit is offline; if so, enter step 302, if not, enter step 306;

Step 302: Send the data message read from the data buffer through the standby port;

Step 303: Count the data packets sent through the standby port;

Step 304: Detect whether the PON port of the optical network distribution unit is online; if so, enter step 305, if not, return to step 302;

Among them, after the PON port of the optical network distribution unit is disconnected, the data message in the data buffer is an invalid message. In this case, the data message that has been an invalid message can be sent out through the standby port ; and when the PON port of the optical network distribution unit is online, the data message written into the data buffer is a valid message, and these valid messages need to be sent to the optical line terminal through the PON port.

Therefore, it is necessary to detect in real time whether the PON port of the optical network distribution unit is online, and if not, the data message read from the data buffer can be kept sent through the standby port.

Step 305: Send the data message read from the data buffer from the standby port to switch to the PON port to send it to the optical line terminal via the passive optical splitter;

Wherein, after detecting that the PON port of the optical network distribution unit is on-line, the data message written in the data buffer is a valid message, therefore, the switching action can be performed, so that the data message read from the data buffer can be Send it through the PON port, and go through the passive splitter to the optical line terminal.

Step 306: Send the data message read from the data buffer through the PON port to the optical line terminal via the passive optical splitter.

In the embodiment of the present invention, when it is detected that the PON port of the optical network distribution unit is offline, the data message read from the data buffer can be sent out through the backup port, and the statistics sent through the backup port can be counted. data packets, so that network faults can be located according to the data packets counted at the standby port, and because there is no need to close the user port, network faults can also be located according to the data packets counted at the user port. Therefore, the present invention improves network The accuracy of fault determination makes the network recover quickly; in addition, in the present invention, the data message sent out through the standby port can be directly discarded, so that after the PON of the optical network distribution unit goes online again, the ineffectiveness of occupying the line bandwidth is reduced. message.

In the embodiment of the present invention, before the data message sent by the standby port is switched to the data message sent by the PON, if the data message written in the data buffer before the PON port of the optical network distribution unit goes online again cannot be completely If it is cleared, there will still be invalid packets in the data buffer, so that some invalid packets will still be sent to the optical line terminal through the PON port, occupying the line bandwidth and affecting the network speed.

Based on this, another embodiment of the present invention also discloses a data message control method, as shown in Figure 4, the method may include the following steps:

Step 401: Detect whether the PON port of the optical network distribution unit is offline; if so, go to step 402, if not, go to step 407;

Step 402: Send the data message read from the data buffer through the standby port;

Step 403: Count the data packets sent through the standby port;

Step 404: Detect whether the PON port of the optical network distribution unit is online;

Step 405: Determine that all data packets that meet the preset conditions are read in the data buffer, and all the read data packets are sent out through the standby port;

Wherein, the preset condition refers to the condition that all the data messages written in the data buffer before the PON port of the optical network distribution unit goes online again are cleared;

The data packets written into the data buffer before the PON port of the optical network distribution unit goes online again are all invalid packets. , the wireless packets occupy the extra bandwidth of the line, and all invalid packets in the data buffer need to be cleared.

It should be noted that the data buffer in the present invention is a FIFO (First In First Out) memory, that is, the data message first written in the data buffer is preferably read, and then written into the data buffer The selected datagrams are read later.

Wherein, the manner of clearing the invalid message in the data buffer is not specifically limited. As an implementation manner, step 405 may specifically include:

Detect the write address of the data message written in the data buffer when it goes online on the PON port;

Wherein, when it is detected that the PON port of the optical network distribution unit is online, the write address of the data message written into the data buffer at this time can be determined, that is, all the data messages before the write address are invalid messages. The data message after the write address is a valid message.

It is determined that the read address of the data packet for reading the data buffer is the same as the write address.

Wherein, when the address of the data message for reading the data buffer is the same as the write address, it means that all invalid messages in the data buffer have been read completely.

All the read data packets are sent out through the standby port.

As another implementation, it is possible to mark the data message written in the data buffer when the PON port is online, and detect whether the read data message in the data buffer carries the mark. If the fetched data message carries the mark, it is determined that all invalid messages in the data buffer have been read, and all the read data messages are sent out through the standby port, so that the data buffer in the data buffer is cleared. all invalid messages.

By sending the read data message through the standby port, all the invalid messages in the data buffer are cleared. Correspondingly, when switching from the standby port to the PON port, all the sent data messages are Effective messages, thus ensuring that invalid messages will not occupy the extra bandwidth of the line, improving the network speed.

Step 406: Switch the data message read from the data buffer from the standby port to the PON port to send it to the optical line terminal via the passive optical splitter;

Step 407: Send the data message read from the data buffer through the PON port to the optical line terminal via the passive optical splitter.

An embodiment of the present invention discloses a data message control device, which can be applied to an optical network distribution unit;

Among them, the optical network distribution unit is a component of the EPON (Ethernet Passive Optical Network, Ethernet Passive Optical Network) system. The specific structure of the EPON system can be seen in Figure 1, and will not be described in detail here.

Wherein, each ONU can include a user port for receiving data messages, a data buffer for buffering data messages, a PON port for sending data messages read from the data buffer, and a spare port.

Referring to FIG. 5, the device may include: a first detection unit 501, a first sending unit 502, a first statistics unit 503, and a second sending unit 504; wherein:

The first detection unit 501 can be used to detect whether the PON port of the optical network distribution unit is offline;

Wherein, the first detection unit may be specifically configured to detect whether the PON port of the optical network distribution unit has not received an optical signal.

The first sending unit 502 may be configured to send the data message read from the data buffer through the standby port when it is detected that the optical network distribution unit is offline;

The first statistical unit 503 may be used to count data packets sent through the standby port;

The second sending unit 504 can be configured to send the data message read from the data buffer through the PON port when it is detected that the optical network distribution unit is not offline, and send the data message through the passive optical The splitter is connected to the optical line terminal.

In the embodiment of the present invention, when it is detected that the PON port of the optical network distribution unit is offline, the data message read from the data buffer can be sent out through the backup port, and the statistics sent through the backup port can be counted. data packets, so that network faults can be located according to the data packets counted at the standby port, and because there is no need to close the user port, network faults can also be located according to the data packets counted at the user port. Therefore, the present invention improves network The accuracy of fault determination enables the network to recover quickly.

Another embodiment of the present invention also discloses a device for controlling data packets, as shown in FIG. 6 , the device may include: a first detection unit 601 , a first sending unit 602 , a first statistics unit 603 , and a second detection unit 604 , the first switching unit 605, the first holding unit 606, and the second sending unit 607; wherein:

The first detection unit 601 can be used to detect whether the PON port of the optical network distribution unit is offline;

The first sending unit 602 may be configured to send the data message read from the data buffer through the backup port when it is detected that the optical network distribution unit is offline;

The first statistical unit 603 may be used to count data packets sent through the standby port;

The second detection unit 604 can be used to detect whether the PON port of the optical network distribution unit is online;

The first switching unit 605 can be used to send the data message read from the data buffer through the backup port to switch to the PON port of the optical network distribution unit when it is detected that the PON port is online. The PON port is sent to the optical line terminal via the passive optical splitter;

The first holding unit 606 may be configured to keep sending the data message read from the data buffer through the standby port when detecting that the PON port of the optical network distribution unit is not online;

The second sending unit 607 can be configured to send the data message read from the data buffer through the PON port when it is detected that the optical network distribution unit is not offline, and send the data message through the passive optical The splitter is connected to the optical line terminal.

In the embodiment of the present invention, when it is detected that the PON port of the optical network distribution unit is offline, the data message read from the data buffer can be sent out through the backup port, and the statistics sent through the backup port can be counted. data packets, so that network faults can be located according to the data packets counted at the standby port, and because there is no need to close the user port, network faults can also be located according to the data packets counted at the user port. Therefore, the present invention improves network The accuracy of fault determination makes the network recover quickly; in addition, in the present invention, the data message sent out through the standby port can be directly discarded, so that after the PON of the optical network distribution unit goes online again, the ineffectiveness of occupying the line bandwidth is reduced. message.

Another embodiment of the present invention also discloses a device for controlling data packets. Referring to FIG. 7 , the device may include: a first detection unit 701 , a first sending unit 702 , a first statistics unit 703 , and a second detection unit 704 , the first determining unit 705, the first switching unit 706, the first holding unit 707, and the second sending unit 708; wherein:

The first detection unit 701 can be used to detect whether the PON port of the optical network distribution unit is offline;

The first sending unit 702 may be configured to send the data message read from the data buffer through the backup port when it is detected that the optical network distribution unit is offline;

The first statistical unit 703 can be used to count the data packets sent through the standby port;

The second detection unit 704 can be used to detect whether the PON port of the optical network distribution unit is online;

The first determining unit 705 may be configured to determine all the data packets that meet the preset conditions read in the data buffer, and all the read data packets are sent out through the standby port.

The first determination unit may include: a first detection module, a first determination module, and a first sending module; wherein:

The first detection module can be used to detect the write address of the data message written into the data buffer when the PON port goes online;

The first determination module may be configured to determine that the read address of the data message for reading the data buffer is the same as the write address;

The first sending module may be configured to send all the read data packets through the standby port.

The first switching unit 706 can be used to send the data message read from the data buffer from the standby port to switch to the PON port of the optical network distribution unit when it is detected that the PON port is online. The PON port is sent to the optical line terminal via the passive optical splitter;

The first holding unit 707 may be configured to keep sending the data message read from the data buffer through the standby port when detecting that the PON port of the optical network distribution unit is not online;

The second sending unit 708 can be configured to send the data message read from the data buffer through the PON port when it is detected that the optical network distribution unit is not offline, and send the data message through the passive optical The splitter is connected to the optical line terminal.

In the embodiment of the present invention, by determining that all data packets that meet the preset conditions are read in the data buffer, and all the read data packets are sent out through the standby port, so that the data packets in the data buffer Correspondingly, when switching from the standby port to the PON port, all the data packets sent are valid packets, thus ensuring that the invalid packets will not occupy the extra bandwidth of the line and improving the Internet speed.

The embodiments of the above devices correspond to the method embodiments, and reference may be made to the method embodiments for specific implementation manners, which will not be described in detail here.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A control method for a data message, characterized in that it is applied in an optical network distribution unit, and the optical network distribution unit includes a user port for receiving a data message, a data buffer for buffering a data message , a PON port and a standby port for sending the data message read from the data buffer; The method includes: Detect whether the PON port of the optical network distribution unit is offline; If yes, send the data message read from the data buffer through the standby port; Counting data packets sent through the standby port; If not, send the data message read from the data buffer through the PON port to the optical line terminal via the passive optical splitter. 2. The method according to claim 1, characterized in that, after the data message sent by the backup port, the statistics further includes: Detect whether the PON port of the optical network distribution unit is online; If so, the data message read from the data buffer is sent out from the standby port and switched to be sent by the PON port so as to pass through the passive optical splitter to the optical line terminal; If not, keep sending the data message read from the data buffer through the standby port. 3. The method according to claim 2, wherein the data message read from the data buffer is switched from being sent out by the standby port to being sent by the PON port through the Before the passive optical splitter to the optical line terminal, it also includes: It is determined that all data packets satisfying the preset condition are read in the data buffer, and all the read data packets are sent out through the standby port. 4. The method according to claim 3, wherein said determining to read all data packets that meet preset conditions in said data cache is specifically: Detecting the write address of the data message written into the data buffer when the PON port goes online; It is determined that the read address of the data message for reading the data buffer is the same as the write address. 5. The method according to claim 1, wherein detecting whether the PON port of the optical network distribution unit is disconnected includes: Detecting whether the PON port of the optical network distribution unit does not receive an optical signal. 6. A control device for a data message, characterized in that it is applied to an optical network distribution unit, and the optical network distribution unit includes a user port for receiving a data message and a data buffer for buffering a data message , a PON port and a standby port for sending the data message read from the data buffer; The unit includes: The first detection unit is used to detect whether the PON port of the optical network distribution unit is offline; The first sending unit is configured to send the data message read from the data buffer through the backup port when it is detected that the optical network distribution unit is offline; a first statistical unit, configured to count data packets sent through the standby port; The second sending unit is configured to send the data message read from the data buffer through the PON port through the passive optical branch when it is detected that the optical network distribution unit is not offline device to the optical line terminal. 7. The device according to claim 6, further comprising: The second detection unit is used to detect whether the PON port of the optical network distribution unit is online; The first switching unit is used to send the data message read from the data buffer from the standby port to switch to the PON port when detecting that the PON port of the optical network distribution unit is online. sending to the optical line terminal via the passive optical splitter; The first holding unit is configured to keep sending the data message read from the data buffer through the standby port when detecting that the PON port of the optical network distribution unit is not online. 8. The device according to claim 7, further comprising: The first determining unit is configured to determine all the data packets that meet the preset conditions read in the data buffer, and all the read data packets are sent out through the standby port. 9. The device according to claim 8, wherein the first determining unit comprises: The first detection module is used to detect the write address of the data message written into the data buffer when the PON port goes online; A first determination module, configured to determine that the read address of the data message for reading the data buffer is the same as the write address; The first sending module is configured to send all the read data packets through the standby port. 10. The device according to claim 6, wherein the first detection unit is specifically configured to detect whether the PON port of the optical network distribution unit does not receive an optical signal.

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