WO2017124684A1

WO2017124684A1 - Optical network terminal and method for capturing abnormal message of optical network terminal

Info

Publication number: WO2017124684A1
Application number: PCT/CN2016/085735
Authority: WO
Inventors: 陈世山; 江坤
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-01-18
Filing date: 2016-06-14
Publication date: 2017-07-27
Also published as: CN106982092B; CN106982092A

Abstract

Disclosed in the present application are an optical network terminal and a method for capturing an abnormal message of an optical network terminal, the optical network terminal comprising: a processor configured to encapsulate, after receiving a message, the message into a data frame in a preset format, and forward the data frame to a first chip by means of a second chip; the first chip being configured to store, when having received the data frame, the data frame in a storage buffer of a preset transmission container (T-CONT); a monitoring module configured to send, when having monitored a processor abnormality, a reset signal to a register control module; the register control module being configured to set, after receiving the reset signal, a preset bit of the register to a preset value; the first chip being also configured to send, when the preset bit of the register is the preset value, the data frame in the storage buffer of the T-CONT to an optical line terminal.

Description

Abnormal message capture method for optical network terminal and optical network terminal

Technical field

The present application relates to, but is not limited to, the field of optical network terminal technologies, and in particular, to an abnormal packet capture method for an optical network terminal and an optical network terminal.

Background technique

The GPON (Gigabit-Capable Passive Optical Network) system is mainly composed of an OLT (Optical Line Termina), an ODN (Optical Distribution Network), and an ONT (Optical Network Terminal). The composition is a point-to-multipoint structure, that is, one optical line terminal is connected to a plurality of optical network units. In a typical GPON network, the OLT is generally placed in a telecommunications room and can be connected to 32/64/128 ONT devices. The ONT equipment is placed at a location away from the user's corridor with a maximum distance of 60 kilometers from the central office. The transmission container T-CONT (Transmission Containe) is the uplink transmission container in GPON, which is the basic unit for uplink bandwidth request and allocation. Each ONT supports multiple TCONTs (the number of specific supports is determined by the ONT capability), usually Can support 8, 16, 32, 64. The GPON system divides the uplink into different time slots, and uses a DBA (Dynamic Bandwidth Allocation, Dynamic Bandwidth Allocation) algorithm to allocate a transmission time slot to each transmission container T-CONT. The ONT transmits the transmission container T-CONT in the allocated time slot. The data. Each transport container T-CONT generally supports 4-8 queues, and the GPON ONT upstream traffic is scheduled in the transport container T-CONT queue. The ONT device supports dozens of user ports (each port is connected to one user), and aggregates uplink data of different services of all users to the Internet through the GPON system, and forwards the received downlink data to each user through a certain forwarding policy. port.

In the on-site environment, the ONT device often receives a large number of protocol packets and causes abnormal hangs. After the device restarts automatically, the fault recurrence time is uncertain. It may be 1 hour or several days. The faulty device is directly attached to the central office OLT, and the problem cannot be reproduced.

The reason why the device is abnormally hanged is as follows: the protocol packet is invalid, the ONT software itself is BUG, and so on. Under current technical conditions, each ONT manufacturer excludes non-data such as temperature. If the cause is abnormal, the abnormal packet data is usually obtained by the following method to locate the cause of the hang.

Method 1: Connect a laptop to the ONT network port, perform data mirroring configuration on the ONT, copy the data stream to the network port connected to the notebook, and then open the packet capture tool on the laptop to capture the packet in real time. Since the ONT layout environment is far from the central office and the situation is complicated, it takes a lot of manpower to implement the method, and is subject to the ONT installation environment, which seriously hinders the progress speed of the fault resolution.

Method 2: Remotely enable the underlying ONT printing, and store all received messages in a log file for analysis and processing. Due to the uncertainty of the fault recurrence time, the packet capture process must be continued, so that the CPU resources are occupied in a large amount, which seriously affects the normal operation of the ONT.

Method 3: Store the received packets in a memory device such as high-end memory. After the packet capture process is enabled, the device running memory will be squeezed out, and the system performance and stability will be seriously affected.

Method 4: Store the received message in an external storage device such as FLASH. Since the CPU writes data to the external storage device slowly and the embedded device has limited external storage, the method is difficult to implement during the operation of the device.

Each of the above methods can obtain the packet data that causes the device to be abnormal. However, each method takes a long time to obtain the packet data that causes the device to be abnormal.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The main purpose of the embodiments of the present invention is to provide an abnormal packet capture method for an optical network terminal and an optical network terminal, which can solve the problem that it takes a long time to obtain packet data that causes the device to be abnormal.

An optical network terminal, the optical network terminal includes: a processor, a first chip, a second chip, a monitoring module, and a register control module, wherein the register control module is connected to the processor and the monitoring module, The first chip includes a transfer container T-CONT and a register, and the register control module is further connected to the register, wherein:

The processor is configured to, after receiving the packet, encapsulate the packet into a data frame of a preset format, and forward the data frame to the first chip by using the second chip.

The first chip is configured to store the data frame in a pre-received manner when the data frame is received Set in the storage buffer of the T-CONT.

The monitoring module is configured to send a reset signal to the register control module when the processor abnormality is detected.

The register control module is configured to set a preset bit position of the register to a preset value after receiving the reset signal.

The first chip is further configured to send the data frame in the storage buffer of the T-CONT to the optical line terminal when the preset bit of the register is a preset value.

Optionally, the first chip includes:

And a reporting unit, configured to report length information of all data frames in the storage buffer of the T-CONT to the optical line terminal.

And a receiving unit, configured to receive a time slot that the optical line terminal feeds back based on the length information.

And a sending unit, configured to send the data frame in the storage buffer of the T-CONT to the optical line terminal in the received time slot.

Optionally, the first chip is further configured to: detect whether a preset bit of the register is the preset value.

If the preset bit of the register is the preset value, the data frame in the storage buffer of the T-CONT is transmitted to the optical line terminal.

If the preset bit of the register is not the preset value, reporting, to the optical line terminal, that the length information of all data frames in the storage buffer of the T-CONT is zero, wherein the length is When the information is zero, the optical line terminal does not feed back the slot information to the optical network terminal.

Optionally, the processor is further configured to: after receiving the packet, intercept data of a preset byte length of the packet, and encapsulate the data into a data frame of a preset format.

Optionally, the packet is divided into different types, and the processor is further configured to encapsulate the intercepted data of different types of packets into data frames of different types of preset formats.

Optionally, the storage buffer of the T-CONT is a ring stack area.

An abnormal packet capture method for an optical network terminal includes:

After receiving the packet, the packet is encapsulated into a data frame in a preset format;

The data frame is stored in a storage buffer of a preset transmission container T-CONT;

Sending a reset signal when a processor exception is detected;

After receiving the reset signal, setting a preset bit position of the register to a preset value;

When the preset bit of the register is a preset value, the data frame in the storage buffer of the transmission container T-CONT is sent to the optical line terminal.

Optionally, the compressing the packet into a data frame in a preset format comprises: intercepting data of a preset byte length of the packet and packaging the data frame into a preset format.

Optionally, the packet is divided into different types, and the method further includes: encapsulating the intercepted data of different types of packets into data frames of different types of preset formats.

Optionally, the sending the data frame in the storage buffer of the T-CONT to the optical line terminal includes:

Reporting, to the optical line terminal, actual length information of all data frames in the storage buffer of the T-CONT;

Receiving a time slot that the optical line terminal feeds back based on the actual length information;

Transmitting a data frame in the storage buffer of the T-CONT to the optical line terminal within the received time slot.

Optionally, the method further includes: detecting whether the preset bit of the register is the preset value.

If the preset bit of the register is not the preset value, reporting, to the optical line terminal, that the length information of all data frames in the storage buffer of the transport container T-CONT is zero, wherein When the length information is zero, the optical line terminal does not feed back the slot information to the optical network terminal.

Optionally, the storage buffer of the T-CONT is a ring stack area.

A computer readable storage medium storing computer executable instructions that, when executed by a processor, implement the abnormal message capture method of the optical network terminal.

After receiving the packet, the processor encapsulates the packet into a data frame of a preset format, and forwards the data frame to the first chip by using the second chip; When receiving the data frame, the chip stores the data frame in a storage buffer of the T-CONT, and provides a data foundation for capturing a message before the optical network terminal is abnormally suspended, and is monitored by the monitoring module. a state to the processor, when the processor is abnormal, sending a reset signal to a register control module; after receiving the reset signal, the register control module Setting a preset bit position of the register to a preset value; when the preset bit of the register is a preset value, the first chip sends the data frame in the storage buffer of the T-CONT to The optical line terminal, that is, the timing of transmitting the data frame in the storage buffer of the T-CONT by the register control module, and the preset of the register is only when the monitoring module detects the abnormality of the processor The bit position is a preset value, so that the data frame in the storage buffer of the T-CONT is sent to the optical line terminal, thereby solving the problem that it takes a long time to obtain the packet data that causes the device to be abnormal. In turn, the time required to solve the equipment failure can be reduced, and the efficiency of solving the failure can be improved.

BRIEF abstract

1 is a schematic structural diagram of an optical network terminal according to an embodiment of the present invention;

2 is a schematic structural diagram of a data frame stored in a related transport container T-CONT;

3 is a schematic diagram of a refinement function module of the first chip of FIG. 1;

4 is a schematic flowchart of a first embodiment of an abnormal packet capture of an optical network terminal according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart diagram of a second embodiment of an abnormal packet capture of an optical network terminal according to an embodiment of the present invention.

Embodiments of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

Based on the above problem, an embodiment of the present invention provides an optical network terminal.

Referring to FIG. 1, FIG. 1 is a schematic structural diagram of an optical network terminal according to an embodiment of the present invention.

The optical network terminal includes: a first chip 10, a processor 11, a second chip 12, a monitoring module 13 and a register control module 14, and the register control module 14 is connected to the processor 11 and the monitoring module 13, The first chip 10 includes a transfer container T-CONT 15 and a register 16, and the register control module 14 is also coupled to the register 16.

The processor 11 is configured to, after receiving the packet, encapsulate the packet into a data frame of a preset format, and forward the data frame to the first chip 10 through the second chip 12 .

In this embodiment, the processor 11 is a central control module of the optical network terminal, preferably a CPU, and the second chip 12 is preferably a switch chip, and the first chip 10 is preferably For the PON-MAC chip. All the switching chips received by the processor include the Internet Group Management Protocol (IGMP), the Dynamic Host Configuration Protocol (DHCP), and the ARP (Address Resolution Protocol). The packets forwarded to the CPU and the packets received by the CPU through other interfaces. The data frame in the preset format is a data frame in a frame format as described in FIG. 2, and the data frame includes a destination MAC address, a source MAC address, a constant value field, a vlan+priority field, a type field, a length field, and a packet. data. The destination MAC address is set to the MAC address of the ONT next hop gateway, and the source MAC address field may be set to the CPU inband MAC, and the constant value field is set to OX8100, indicating that the frame includes an 802.1Q VLAN tag, and the vlan+ The priority field can be flexibly set according to the needs of the service, and is a basis for the PON-MAC chip to forward to different GEMPORTs (for bearer services) under the transport container. The type field is the packet received by the CPU and other types. The difference field of the message may be set to OX8900, where the length field is the length field of the message, that is, how many bytes of the message are, and the message data is the message received by the CPU. .

After the received packet is encapsulated into a data frame, the network driver sends a packet interface function, and sends the encapsulated data frame to an uplink port of the switch chip, and then sends the data frame to the PON through the uplink port. -MAC chip. The uplink port of the switch chip is a port that is connected to a PON-MAC chip through an interface such as a Gigabit Medium Independent Interface (GMII), and all uplink data sent to the OLT is sent to the PON through the port. The MAC chip, and the downlink data sent from the OLT enters the switch chip through the port through the PON-MAC chip, and is forwarded to the destination user port or the CPU port.

Optionally, the processor 11 is further configured to: after receiving the packet, intercept data of a preset byte length of the packet, and encapsulate the data into a data frame of a preset format.

The preset byte length of the packet is a preset number of bytes for intercepting the packet. The data of the preset byte length is intercepted from the destination MAC (Media Access Control) address data of the received message until the data of the preset byte is intercepted. For example, if the preset byte length is 500 bytes, the data of the preset byte length is calculated from the destination MAC address data of the packet, until the 500 message data is obtained. The 500 bytes of data of the obtained packet is the data of the preset byte length. In the process of encapsulating the data into a data frame of a preset format, since the CPU receives each In the process of encapsulating a frame, the interception data of different types of packets can be encapsulated into data frames of different priorities. For example, different types of packets can be encapsulated into different vlan+priority frames. The PON-MAC chip can match data frames according to preset classification rules, so that frames matching different classification rules are sent to T-CONT. Storage slots of different priorities under the storage buffer.

The first chip 10 is configured to store the data frame in a storage buffer of the preset transmission container T-CONT when the data frame is received.

The first chip 10, preferably a PON-MAC chip, stores the data frame in a preset storage buffer of the T-CONT when receiving the data frame. The storage buffer of the transport container T-CONT includes a plurality of priority queues. Optionally, the storage buffer of the T-CONT is organized into a ring stack area having different transmission priorities, that is, a ring stack area including a plurality of different priorities. Taking the storage buffer of the T-CONT as a ring stack area as an example, the process of storing data frames in the storage buffer of the T-CONT is as follows:

For example, storing a new data frame to a ring stack area of the T-CONT, the data frame is filled to the data block currently pointed by the cursor, and the stack area cursor points clockwise to the start position of the next data block, if If the data block pointed to by the current cursor has been occupied, the data filled in the data block is overwritten with the data of the current data frame, which is a pre-allocated fixed length data storage unit. The reason why the storage buffer of the T-CONT is set to a plurality of ring stacks of different priorities is that the packet causing the ONT to be abnormally hanged should be a finite number of packets received before the hang, and the previous period is received. The received packet is irrelevant, and the closer the packet is received, the closer the ONT device hangs, the more likely the ONT device hangs. Therefore, the storage buffer of the T-CONT is set to be different. The priority ring stack area can be used to send only a part of the data frame in the ring stack area when transmitting the message in the ring stack area.

The monitoring module 13 is configured to send a reset signal to the register control module 14 when the processor 11 is detected to be abnormal.

The monitoring module 13, preferably a watchdog circuit, is preferably a CPLD. In essence, the watchdog circuit is a timer circuit. It generally has an input and an output. The input is called a dog. The output is generally connected to the reset terminal of another part. The basic working principle is as follows: After that, the watchdog counter is started. At this time, the watchdog starts to automatically time. If it reaches a certain time, it will not be cleared. The watchdog meter The counter will overflow and cause the watchdog to be interrupted, causing a system reset. For example, when the watchdog circuit does not receive the dog feed signal sent by the CPU for a period of time, that is, the CPU abnormality is detected, for example, the CPU is in a program running state or an infinite loop state, etc. The watchdog circuit sends a reset signal to the CPLD connected to it.

The register control module 14 is configured to set a preset bit position of the register 16 to a preset value after receiving the reset signal.

The register control module 14 takes the CPLD as an example, and after receiving the reset signal sent by the monitoring circuit, configures a preset bit of the register in the PON-MAC chip through the PCI bus. The preset bit is a control bit for controlling the T-CONT by the register. In the present embodiment, the preset value is '1' representing a high level.

The first chip 10 is further configured to send the data frame in the storage buffer of the T-CONT 15 to the optical line terminal when the preset bit of the register 16 is a preset value.

When the preset bit of the register is a preset value. For example, the preset bit of the register is '1', and the first chip first sends a data frame filled in a data block pointed by the current cursor in each ring stack area, and after the transmission is completed, the cursor is in a counterclockwise direction. Pointing to the starting position of the previous data block, continue to send the data frame filled in the data block pointed by the cursor until all the data frames stored in the ring stack area are sent or the authorized time slot ends. It should be noted that the above sending process is Taking the storage buffer of the transport container T-CONT as a ring stack area as an example.

Referring to FIG. 3, the first chip 10 includes a reporting unit 100, a receiving unit 101, and a transmitting unit 102.

The reporting unit 100 is configured to report length information of all data frames in the storage buffer of the T-CONT to the optical line terminal.

The receiving unit 101 is configured to receive a time slot that the optical line terminal feeds back based on the length information, where the optical line terminal does not feed back a time slot to the optical network terminal when the length information is zero information.

The sending unit 102 is configured to send a data frame in the storage buffer of the T-CONT to the optical line terminal in the received time slot.

In the GPON system, when the first chip of the ONT sends the data frame in the storage buffer of the T-CONT to the OLT, it needs to send a DBA report to the OLT, and report the storage buffer in the storage buffer T-CONT. The length information of all data frames, the OLT will check the DBA report, It is then decided whether to grant the first chip of the ONT the time slot in which the data frame stored in the storage buffer of the T-CONT is transmitted. For example, if the sent report reports the actual length information of the data frame stored in the storage buffer of the T-CONT, according to the standard G.984.3 protocol, the OLT sends an authorization to the ONT to grant the storage of the T-CONT. a time slot of a data frame stored in the buffer, and the PON-MAC chip transmits a data frame stored in a storage buffer of the T-CONT within the authorized time slot; if the transmitted report reports the T-CONT The length information of the data frame stored in the storage buffer is zero. According to the standard G.984.3 protocol, the OLT does not grant the ONT a time slot for transmitting the data frame stored in the storage buffer of the T-CONT, so that the PON- The MAC chip cannot transmit the data frame stored in the storage buffer of the transport container T-CONT. Therefore, in order to avoid the upstream bandwidth waste caused by the PON-MAC chip in the ONT continuously transmitting the data frame stored in the storage buffer of the T-CONT to the OLT, only the preset bit of the register is a preset value. Reporting the length information of all data frames in the storage buffer of the T-CONT, and reporting all the storage buffers in the T-CONT when the preset bits of the register are not preset values. The length information of the data frame is zero, that is, there is no data frame to be sent in the storage buffer of the T-CONT, so that the PON-MAC chip cannot transmit the data frame stored in the storage buffer of the T-CONT.

After receiving the packet, the processor encapsulates the packet into a data frame of a preset format, and forwards the data frame to the first chip by using the second chip; the first chip When the data frame is received, the data frame is stored in a storage buffer of the T-CONT, and provides a data foundation for capturing a message before the optical network terminal is abnormally suspended, and monitoring the device through the monitoring module. a state of the processor, when the processor is abnormal, sending a reset signal to the register control module; after receiving the reset signal, the register control module sets the preset bit position of the register to a preset value; When the preset bit of the register is a preset value, the first chip sends the data frame in the storage buffer of the T-CONT to the optical line terminal, that is, the T is controlled by the register control module to send the T - the timing of the data frame in the storage buffer of -CONT, only when the monitoring module detects the abnormality of the processor, the preset bit position of the register is set to a preset value, thereby causing the T-CO The data frame in the storage buffer of the NT is sent to the optical line terminal, which solves the problem that it takes a long time to obtain the packet data that causes the device to be abnormal, thereby reducing the time required to solve the device failure and improving the solution. The efficiency of the failure.

Based on the optical network terminal, the first embodiment of the method for capturing an abnormal packet of the optical network terminal according to the embodiment of the present invention is provided. Referring to FIG. 4, in the embodiment, the abnormal packet capture of the optical network terminal is performed. The method includes the following steps S10-S30:

Step S10: The first chip receives the data frame sent by the second chip, and stores the data frame in a storage buffer of a preset T-CONT.

The data frame may be a data frame that is encapsulated into a preset format by the processor after receiving the message. The processor is a central control module of the optical network terminal, preferably a CPU, the second chip, preferably a switch chip, and the first chip, preferably a PON-MAC chip. All the switching chips received by the processor include the Internet Group Management Protocol (IGMP), the Dynamic Host Configuration Protocol (DHCP), and the ARP (Address Resolution Protocol). The packets forwarded to the CPU and the packets received by the CPU through other interfaces. The data frame in the preset format is a data frame in a frame format as described in FIG. 2, and the data frame includes a destination MAC address, a source MAC address, a constant value field, a vlan+priority field, a type field, a length field, and a packet. data. The destination MAC address is set to the MAC address of the ONT next hop gateway, and the source MAC address field may be set to the CPU inband MAC, and the constant value field is set to OX8100, indicating that the frame includes an 802.1Q VLAN tag, and the vlan+ The priority field can be flexibly set according to the needs of the service, and is a basis for the PON-MAC chip to forward to different GEMPORTs (for bearer services) under the transport container. The type field is the packet received by the CPU and other types. The difference field of the message may be set to OX8900, where the length field is the length field of the message, that is, how many bytes of the message are, and the message data is the message received by the CPU. .

Optionally, the data frame is a data frame in which the processor intercepts the preset byte length of the packet after receiving the packet, and encapsulates the data into a preset format. The preset byte length of the packet is a preset number of bytes for intercepting the packet. The data of the preset byte length is intercepted from the destination MAC (Media Access Control) address data of the received message until the data of the preset byte is intercepted. For example, if the preset byte length is 500 bytes, the data of the preset byte length is calculated from the destination MAC address data of the packet, until the 500 message data is obtained. The 500 bytes of data of the obtained packet is the data of the preset byte length. In the process of encapsulating the data into a data frame of a preset format, since the CPU receives various types of packets, the maintenance personnel close the different types of packets. The degree of annotation is different. Therefore, in the process of encapsulating a frame, the intercepted data of different types of packets can be encapsulated into data frames of different priorities. For example, different types of packets can be encapsulated into different vlan+priority frames. The PON-MAC chip can match data frames according to preset classification rules, so that frames matching different classification rules are sent to T-CONT. Storage slots of different priorities under the storage buffer.

After the received packet is encapsulated into a data frame, the network driver sends a packet interface function, and sends the encapsulated data frame to an uplink port of the switch chip, and then sends the data frame to the PON through the uplink port. -MAC chip. The uplink port of the switch chip is a port that is connected to a PON-MAC chip through an interface such as a Gigabit Medium Independent Interface (GMII), and all uplink data sent to the OLT is sent to the PON through the port. The MAC chip, and the downlink data sent from the OLT enters the switch chip through the port through the PON-MAC chip.

Upon receiving the data frame, the data frame is stored in a storage buffer of the T-CONT. The storage buffer of the T-CONT includes a plurality of priority queues. Optionally, the storage buffer of the T-CONT is organized into a ring stack area having different transmission priorities, that is, a ring stack area including a plurality of different priorities. Taking the storage buffer of the T-CONT as a ring stack area as an example, the process of storing data frames in the storage buffer of the T-CONT is as follows:

For example, storing a new data frame to a ring stack area of the T-CONT, the data frame is filled to the data block currently pointed by the cursor, and the stack area cursor points clockwise to the start position of the next data block, if If the data block pointed to by the current cursor has been occupied, the data filled in the data block is overwritten with the data of the current data frame, which is a pre-allocated fixed length data storage unit. The reason why the storage buffer of the T-CONT is set to a plurality of ring stacks of different priorities is that the packet causing the ONT to be abnormally hanged should be a finite number of packets received before the hang, and the previous period is received. The received packet is irrelevant, and the closer the packet is received, the closer the ONT device hangs, the more likely the ONT device hangs. Therefore, the storage buffer of the transport container T-CONT is set to be large. The ring stack areas of different priorities may be configured to send only a part of the data frames in the ring stack area when transmitting the message in the ring stack area.

Step S20, the first chip detects whether a preset bit of the register that controls the T-CONT is a preset value.

The first chip takes a PON-MAC chip as an example, and controls the transmission in real time or timing detection. Whether the preset bit of the register of the container T-CONT is a preset value. The preset bit is a control bit for controlling the T-CONT by the register. In this embodiment, the preset value is '1' representing a high level. The preset bits of the register can be controlled by a register control module of the optical network terminal. The register control module takes the CPLD as an example, and after receiving the reset signal sent by the monitoring module, configures a preset bit of the register in the PON-MAC chip through the PCI bus. The monitoring module is preferably a watchdog circuit. In essence, the watchdog circuit is a timer circuit, generally having an input and an output, wherein the input is called a dog, and the output is generally connected to another part. The reset operation of the reset terminal is as follows: After the whole system is running, the watchdog counter is started. At this time, the watchdog starts to automatically time. If it reaches a certain time, it does not clear it. The dog counter will overflow and cause a watchdog interrupt, causing a system reset. For example, when the watchdog circuit does not receive the dog feed signal sent by the CPU for a period of time, that is, the CPU abnormality is detected, for example, the CPU is in a program running state or an infinite loop state, etc. The watchdog circuit sends a reset signal to the CPLD connected thereto, and the CPLD configures the preset bit position of the register in the PON-MAC chip to be '1' through the PCI bus.

Step S30, if the preset bit of the register is the preset value, the first chip sends the data frame in the storage buffer of the T-CONT to the optical line terminal.

If the preset bit of the register is detected as a preset value, for example, the preset bit of the register is '1', the first chip, for example, the PON-MAC chip, will first send each ring stack. The data frame filled in the data block pointed to by the current cursor in the area, after the transmission is completed, the cursor points to the start position of the previous data block in the counterclockwise direction, and continues to send the data frame filled in the data block pointed by the cursor until the circular stack area is All the data frames stored in the end are sent or the end of the authorized time slot. It should be noted that the above sending process is an example in which the storage buffer of the T-CONT is a ring stack area.

After receiving the packet, the processor encapsulates the packet into a data frame of a preset format, and forwards the data frame to the first chip by using the second chip; When receiving the data frame, the chip stores the data frame in a storage buffer of the T-CONT, and provides a data foundation for capturing a message before the optical network terminal is abnormally suspended, and is monitored by the monitoring module. a state of the processor, when the processor is abnormal, sending a reset signal to a register control module; after receiving the reset signal, the register control module is configured to The preset bit position is a preset value; when the preset bit of the register is a preset value, the first chip sends the data frame in the storage buffer of the T-CONT to the optical line terminal, that is, The timing of transmitting the data frame in the storage buffer of the T-CONT is controlled by the register control module, and the preset bit position of the register is preset only when the monitoring module detects the abnormality of the processor. The value, which in turn causes the data frame in the storage buffer of the T-CONT to be sent to the optical line terminal, thereby solving the problem that it takes a long time to obtain the packet data causing the device abnormality, and the solution is reduced. The time required for the failure increases the efficiency of troubleshooting.

Optionally, a second embodiment of the method for capturing an abnormal packet of the optical network terminal of the present invention is provided based on the first embodiment. Referring to FIG. 5, in the implementation, the step S30 includes steps S31-S34:

Step S31, the reporting unit reports length information of all data frames in the storage buffer of the T-CONT when the preset bit of the register is a preset value.

Step S32, the first chip receives a time slot that the optical line terminal feeds back based on the actual length information.

Step S33, the first chip sends a data frame in the storage buffer of the T-CONT to the optical line terminal in the received time slot.

In the GPON system, when the first chip of the ONT sends the data frame in the storage buffer of the T-CONT to the OLT, it needs to send a DBA report to the OLT, and report all the data in the storage buffer of the T-CONT. For the length information of the frame, the OLT checks the DBA report and then decides whether to grant the first chip of the ONT the time slot of the data frame stored in the storage buffer of the transport container T-CONT. For example, if the transmitted DBA report reports the actual length information of the data frame stored in the storage buffer of the T-CONT, that is, the true length of the data frame, the OLT sends an authorization to the ONT according to the standard G.984.3 protocol. Granting a time slot for transmitting a data frame stored in a storage buffer of the T-CONT, and the PON-MAC chip transmits a data frame stored in a storage buffer of the T-CONT within an authorized time slot;

Optionally, after the step S20, the method further includes:

Step S34, if the preset bit of the register is not the preset value, the first chip reports the length information of all data frames in the storage buffer of the transmission container T-CONT to the optical line terminal. Zero, wherein, when the length information is zero, the optical line terminal does not feed back time slot information to the optical network terminal, so that when the optical line terminal does not feed back to the optical network terminal Gap information.

If the first chip detects that the preset bit of the register is not a preset value in real time or timing, for example, the preset bit of the register is '0', the first chip reports to the optical line terminal When the length information of all the data frames in the storage buffer of the T-CONT is described, the sent DBA report reports that the length information of the data frame stored in the storage buffer of the T-CONT is zero, according to the standard G.984.3 protocol. The OLT does not grant the ONT a time slot for transmitting a data frame stored in the storage buffer of the T-CONT, such that the PON-MAC chip cannot transmit the data frame stored in the storage buffer of the T-CONT. Therefore, in order to avoid the upstream bandwidth waste caused by the PON-MAC chip in the ONT continuously transmitting the data frame stored in the storage buffer of the T-CONT to the OLT, only the preset bit of the register is a preset value. Reporting the length information of all data frames in the storage buffer of the T-CONT, and reporting all the storage buffers in the T-CONT when the preset bits of the register are not preset values. The length information of the data frame is zero, that is, there is no data frame to be sent in the storage buffer of the T-CONT, so that the PON-MAC chip cannot transmit the data frame stored in the storage buffer of the T-CONT.

In this embodiment, when the preset bit of the register is a preset value, the length information of all data frames in the storage buffer of the transport container T-CONT is reported, and the preset bit of the register is not When the value is preset, the length information of all data frames in the storage buffer of the transmission container T-CONT is reported to be zero, thereby controlling all data frames in the storage buffer of the transmission container T-CONT to be issued. The time slot avoids the waste of uplink bandwidth caused by the PON-MAC chip in the ONT continuously transmitting the data frame stored in the storage buffer of the transport container T-CONT to the OLT.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments. Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better. Implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in each embodiment of the present invention.

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.

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 the 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

After receiving the packet, the processor encapsulates the packet into a data frame of a preset format, and forwards the data frame to the first chip by using the second chip; When receiving the data frame, the chip stores the data frame in a storage buffer of the T-CONT, and provides a data foundation for capturing a message before the optical network terminal is abnormally suspended, and is monitored by the monitoring module. Go to the state of the processor, when the processor is abnormal, send a reset signal to the register control module; after receiving the reset signal, the register control module sets the preset bit position of the register as a preset a value; when the preset bit of the register is a preset value, the first chip sends the data frame in the storage buffer of the T-CONT to the optical line terminal, that is, the sending control station is controlled by the register control module. The timing of the data frame in the storage buffer of the T-CONT, only when the monitoring module detects the abnormality of the processor, the preset bit position of the register is set to a preset value, thereby The data frame in the storage buffer of the T-CONT is sent to the optical line terminal, which solves the problem that it takes a long time to obtain the packet data causing the device abnormality, thereby reducing the time required for solving the device failure. Improve the efficiency of troubleshooting.

Claims

An optical network terminal includes: a processor, a first chip, a second chip, a monitoring module, and a register control module, wherein the first chip includes a transmission container T-CONT and a register, and the register control module Connected to the processor, the monitoring module, and the register, wherein:

The processor is configured to, after receiving the packet, encapsulate the packet into a data frame of a preset format, and forward the data frame to the first chip by using the second chip;

The first chip is configured to: when receiving the data frame, store the data frame in a preset storage buffer of the T-CONT;

The monitoring module is configured to send a reset signal to the register control module when the processor abnormality is detected;

The register control module is configured to: after receiving the reset signal, set a preset bit position of the register to a preset value;

The first chip is further configured to send the data frame in the storage buffer of the T-CONT to the optical line terminal when the preset bit of the register is a preset value.
The optical network terminal of claim 1 wherein said first chip comprises:

a reporting unit, configured to report length information of all data frames in the storage buffer of the T-CONT to the optical line terminal;

a receiving unit, configured to receive a time slot that the optical line terminal feeds back based on the length information;

And a sending unit, configured to send the data frame in the storage buffer of the T-CONT to the optical line terminal in the received time slot.
The optical network terminal according to claim 1, wherein the first chip is further configured to: detect whether a preset bit of the register is the preset value;

And if the preset bit of the register is the preset value, sending a data frame in the storage buffer of the T-CONT to the optical line terminal;

If the preset bit of the register is not the preset value, reporting, to the optical line terminal, that the length information of all data frames in the storage buffer of the T-CONT is zero, wherein the length is When the information is zero, the optical line terminal does not feed back the slot information to the optical network terminal.
The optical network terminal according to claim 1, wherein the processor is further configured to: after receiving the message, intercept data of a preset byte length of the message, and encapsulate the data into a pre-package Formatted data frames.
The optical network terminal according to claim 4, wherein the packets are classified into different types, and the processor is further configured to encapsulate the intercepted data of different types of packets into data frames of different types of preset formats. .
The optical network terminal according to any one of claims 1 to 5, wherein the storage buffer of the T-CONT is a ring stack area.
An abnormal packet capture method for an optical network terminal includes:

After receiving the packet, the packet is encapsulated into a data frame in a preset format;

The data frame is stored in a storage buffer of a preset transmission container T-CONT;

Sending a reset signal when a processor exception is detected;

After receiving the reset signal, setting a preset bit position of the register to a preset value;

When the preset bit of the register is a preset value, the data frame in the storage buffer of the transmission container T-CONT is sent to the optical line terminal.
The method for capturing an abnormal packet of an optical network terminal according to claim 7, wherein the encapsulating the packet into a data frame of a preset format comprises: encapsulating a data package of a preset byte length of the packet A data frame in a preset format.
The abnormal packet capture method of the optical network terminal according to claim 8, wherein the packet is divided into different types, and the method further comprises: encapsulating the intercepted data of different types of packets into different types of presets. Formatted data frame.
The abnormal packet capture method of the optical network terminal according to claim 7, wherein the transmitting the data frame in the storage buffer of the T-CONT to the optical line terminal comprises:

Reporting, to the optical line terminal, actual length information of all data frames in the storage buffer of the T-CONT;

Receiving a time slot that the optical line terminal feeds back based on the actual length information;

Transmitting a data frame in the storage buffer of the T-CONT to the optical line terminal within the received time slot.
The method of capturing an abnormal message of an optical network terminal according to claim 7, further comprising: detecting whether a preset bit of the register is the preset value; if a preset bit of the register is the a preset value, the data frame in the storage buffer of the T-CONT is sent to the optical line terminal;

If the preset bit of the register is not the preset value, reporting, to the optical line terminal, that the length information of all data frames in the storage buffer of the T-CONT is zero, wherein the length is When the information is zero, the optical line terminal does not feed back the slot information to the optical network terminal.
The abnormal message capturing method of the optical network terminal according to any one of claims 7 to 11, wherein the storage buffer of the T-CONT is a ring stack area.
A computer readable storage medium storing computer executable instructions, the computer executable instructions being executed by a processor to implement an abnormal message capture method of an optical network terminal according to any one of claims 7 to 11.