CN204392271U - A kind of OAM message transmitting system - Google Patents

Abstract

The utility model relates to the field of network communication, in particular to an OAM message sending system. It includes a reference pulse generation module, a message counting module, a message period control module, a sending control module and a message grouping module; the reference pulse generation module is connected to the message counting module and the message period control module at the same time, And provide a reference pulse for the message counting module; the message counting module and the message cycle control module are connected to the sending control module at the same time, and the sending control module is connected to the message grouping module; the utility model The OAM message sending system provided by the new model adopts the method of the same timer, which can realize the sending control of the same or different timing for different messages in different channels at the same time. At the same time, different sending cycle requirements of different OAM messages of different network layers are met.

Description

An OAM Message Sending System

technical field

The utility model relates to the field of network communication, in particular to an OAM message sending system.

Background technique

Ethernet OAM (Operations, Administration and Maintenance) is a tool for monitoring network problems. It works at the data link layer. Carrier-grade Ethernet utilizes OAMPDU (OAM Protocol Data Units, OAM Protocol Data Units) between devices to exchange regularly to report the status of the network, enabling network administrators to manage the network more effectively.

The ITU organization publishes the ITU-T.Y1731 standard, which mainly defines two types of Ethernet OAM functions: fault management and performance monitoring. Fault management mainly includes: connectivity check (Ethernet Continuity Check), loopback detection (Ethernet Loopback), path detection (Ethernet Link Trace), remote fault indication (Ethernet Remote Defect Indication) and other functions; performance monitoring mainly includes packet loss detection (Frame Loss), delay measurement (Frame Delay), throughput measurement (Throughput measurement), etc.

The main types of OAM packets on the PTN network are shown in Table 1. Some packets are sent periodically, such as CCM packets; some packets are sent on demand, such as AIS/RDI packets; some packets are sent once , such as APS packets.

Table 1 Function message status discovery CCM Alarm suppression AIS/RDI Connectivity Verification LBM/LBR Fault location LTM/LTR Packet loss measurement LMM/LMR Latency measurement DMM/DMR protection switching CCM/APS

Utility model content

The purpose of this utility model is to overcome the above-mentioned deficiencies existing in the prior art, to provide a kind of OAM message sending system that adopts the same counting module to realize the periodic control of different types of OAM messages, including a reference pulse generating module and a message counting module , a message period control module, a sending control module and a message grouping module; the reference pulse generation module is connected to the message counting module and the message period control module at the same time, and provides a reference for the message counting module pulse; the message counting module and the message period control module are simultaneously connected to the sending control module, and the sending control module is connected to the message grouping module.

The packet counting module is used for counting the time of different types of OAM packets to determine whether the sending cycle has been reached.

The message cycle control module is used to control the sending cycles of different types of OAM messages.

The sending control module is used to read the message information in the message counting module and the message cycle control module, and control the sending of the OAM message according to the information.

The message grouping module is used for grouping and sending corresponding OAM messages according to the sending command issued by the sending control module.

Further, the message sending system also includes a message driving module, and the message driving module is connected with the reference pulse generating module and the sending control module at the same time; the message driving module is used to control different types of The enable flag of the OAM packet.

Preferably, the reference pulse generation module generates a 3.33ms reference clock pulse.

Further, the message counting module, the message cycle control module, and the message driving module all include 128 channels, and each channel can accommodate the control parameters of 16 OAM messages, that is, the message sending system can realize theoretically Send control of 2048 messages.

Further, the packet counting module implements the sending period control at the same time or at different times for different types of OAM packets at the same time.

Further, the sending cycle control module can control different sending cycles for the same type of OAM message or the same OAM message.

At the same time, the utility model also provides a method for sending OAM messages using the same counting module to realize the period control of different types of OAM messages, including the following steps:

Step 1: Wait for the arrival of the reference pulse, set m to 0, n to 0, and enter step 2.

Step 2: the sending control module reads the count value of the nth message in the channel m in the message counting module; meanwhile, the sending control module reads the counting value of the nth message in the channel m in the message cycle control module The sending cycle value of n messages; as the count value of the nth message in the channel m<the sending cycle value of the nth message in the channel m, then enter step 3, otherwise enter step 4; wherein 0≤m<128, 0≤n<16.

Step 3: add 1 to the count value of the nth message in the channel m and store it in the original position of the message counting module, and enter step 5.

Step 4: the sending control module sends the message type and the message channel number of the message to the message grouping module, and the message grouping module grouping sends the message, and enters step 5.

Step 5: Add 1 to the value of n, judge whether the current value of n is equal to 16, if not, return to step 2; if yes, go to step 6.

Step 6: return n to zero; add 1 to the value of m, and judge whether the current value of m is 128; if not, return to step 2; if yes, end, and wait for the next reference pulse to arrive.

Further, step 4 also includes the step of the sending control module reading the enabling flag of the nth message in the channel m in the message driving module, if the enabling flag is 1, then the sending control module The module sends the message type and message channel number of the message to the message grouping module, and the message grouping module sends the message, and proceeds to step 5; otherwise, directly proceeds to step 5.

Preferably, the reference pulse is a 3.33ms reference clock pulse.

Further, the OAM message sending method can realize the same time or different time sending cycle control for different types of OAM messages.

Further, the sending cycle control module can control different sending cycles for the same type of OAM message or the same OAM message.

Compared with the prior art, the utility model has the beneficial effects: the OAM message sending system provided by the utility model adopts the mode of the same timer (this timer is a packet timer), and can simultaneously target different channels (for different networks) Different messages in the OAM message of layer) realize the sending control of the same or different timing. At the same time, different sending cycle requirements of different OAM messages of different network layers are met.

Description of drawings

FIG. 1 is a schematic structural diagram of an OAM message sending system provided by the present invention.

Fig. 2 is a flow chart of the OAM message sending method provided by the present invention.

Marks in the figure: 1-reference pulse generation module, 2-message counting module, 3-sending cycle control module, 4-sending control module, 5-message grouping module, 6-message driving module.

Detailed ways

Below in conjunction with specific embodiment the utility model is described in further detail. However, it should not be understood that the scope of the above-mentioned themes of the present utility model is limited to the following embodiments, and all technologies realized based on the content of the present utility model belong to the scope of the present utility model.

Embodiment 1: The purpose of this embodiment is to overcome the above-mentioned deficiencies existing in the prior art, and to provide an OAM message transmission system that uses the same counting module to realize periodic control of different types of OAM messages, including a reference pulse generation module 1 , message counting module 2, message period control module 3, sending control module 4 and message grouping module 5; described reference pulse generation module 1 is connected with described message counting module 2 and described message period control module simultaneously 3, and provide a reference pulse for the message counting module 1; the message counting module 2 and the message period control module 3 are simultaneously connected to the sending control module 4, and the sending control module 4 is connected to the message Text package module 5.

The message counting module 2 is used for counting the time of different types of OAM messages to determine whether the sending period has been reached.

The message cycle control module 3 is used to control the sending cycles of different types of OAM messages; as shown in Table 2, in this embodiment, the sending cycles of the OAM messages can be divided into seven types.

Table 2 Message sending cycle sending rate Packet length (bytes) 3.33ms 300 frames/s 64Byte 10ms 100 frames/s 64Byte 100ms 10 frames/s 64Byte 1s 1 frame/s 64Byte 10s 6 frames/min 64Byte 1min 1 frame/min 64Byte 10min 6 frames/hour 64Byte

In this embodiment, in order to save storage space, in the message cycle control module 3, a comparison table as shown in Table 3 is used to record the cycle of the corresponding message.

table 3 Storage ID Message sending cycle 000 3.33ms 001 10ms 010 100ms 011 1s 100 10s 101 1min 110 10min 111 0 (single)

Referring to Table 3, the storage of each message period can be realized by using only 3 bits of storage bits.

The sending control module 4 is used to read the message information in the message counting module 2 and the message cycle control module 3, and controls the sending of the OAM message according to the information; as the sending control module 4 from the Read 110 in cycle control module 3, then represent, the sending cycle of this OAM message is 10min; As described sending control module 4 reads 011 from described cycle control module 3, then represent that the sending cycle of this OAM message The sending cycle is 1s.

The message grouping module 5 is used for grouping and sending corresponding OAM messages according to the sending command issued by the sending control module 4 .

Further, the message sending system also includes a message driving module 6, and the message driving module 6 is connected with the reference pulse generating module 1 and the sending control module 4 at the same time; the message driving module 6 uses It is used to control the enable flags of different types of OAM packets. The message driving module 6 in this embodiment has a storage space of 128*16 bits, and can realize the enable control of 128*16 OAM messages. If the value of the flag bit is 1, it means that the sending is enabled. If the value of the identification bit is 0, it means that the transmission is prohibited.

Preferably, the reference pulse generation module generates a 3.33ms reference clock pulse.

Further, the message counting module 2, the message period control module 3, and the message driving module 6 all include 128 channels, and each channel can accommodate the control parameters of 16 OAM messages, that is, in theory, the message sending The system can realize the sending control of 2048 messages.

Further, due to its own 128*16 structure, the packet counting module 2 can simultaneously count the sending time of different types of OAM packets at the same time or at different times.

Further, due to its 128*16 structure, the sending cycle control module 3 can realize the cycle control of different types of OAM messages with the same time or different time, and can also realize the same type of OAM messages or the same OAM message Carry out the control of different sending cycles.

Embodiment 2: This embodiment provides a method for sending an OAM message that uses the same counting module to realize periodic control of different types of OAM messages, including the following steps:

Step 1: Wait for the arrival of the reference pulse, set m to 0, n to 0, and enter step 2.

Step 2: the sending control module reads the count value of the nth message in the channel m in the message counting module; meanwhile, the sending control module reads the counting value of the nth message in the channel m in the message cycle control module The sending cycle value of n messages; as the count value of the nth message in the channel m<the sending cycle value of the nth message in the channel m, then enter step 3, otherwise enter step 4; wherein 0≤m<128, 0≤n<16.

Step 3: add 1 to the count value of the nth message in the channel m and store it in the original position of the message counting module, and enter step 5.

Step 4: the sending control module sends the message type and the message channel number of the message to the message grouping module, and the message grouping module grouping sends the message, and enters step 5.

Step 5: Add 1 to the value of n, judge whether the current value of n is equal to 16, if not, return to step 2; if yes, go to step 6.

Step 6: return n to zero; add 1 to the value of m, and judge whether the current value of m is 128; if not, return to step 2; if yes, end, and wait for the next reference pulse to arrive.

Further, step 4 also includes the step of the sending control module reading the enabling flag of the nth message in the channel m in the message driving module, if the enabling flag is 1, then the sending control module The module sends the message type and message channel number of the message to the message grouping module, and the message grouping module sends the message, and proceeds to step 5; otherwise, directly proceeds to step 5.

Preferably, the reference pulse is a 3.33ms reference clock pulse.

Further, due to its own 128*16 structure, the packet counting module 2 can simultaneously count the sending time of different types of OAM packets at the same time or at different times.

Further, due to its 128*16 structure, the sending cycle control module 3 can realize the cycle control of different types of OAM messages with the same time or different time, and can also realize the same type of OAM messages or the same OAM message Carry out the control of different sending cycles.

Claims (4)

1. a kind of OAM message transmission system, it is characterized in that, comprise reference pulse generation module, message counting module, message period control module, send control module and message group bag module; Described reference pulse generation module connects all simultaneously The message counting module and the message period control module, and provide a reference pulse for the message counting module; the message counting module and the message period control module are connected to the sending control module at the same time, the The sending control module is connected to the message grouping module; The message counting module is used to perform time counting for different types of OAM messages to determine whether the sending cycle is reached; The message cycle control module is used to control the sending cycle of different types of OAM messages; The sending control module is used to read the message information in the message counting module and the message period control module, and control the sending of the OAM message according to the information; The message grouping module is used for grouping and sending corresponding OAM messages according to the sending command issued by the sending control module. 2. A kind of OAM message transmission system as claimed in claim 1, is characterized in that, described message transmission system also comprises message driving module, and described message driving module is simultaneously with described reference pulse generation module and all The sending control module is connected; the message driving module is used to control the enabling flags of different types of OAM messages. 3. The OAM message sending system according to claim 1, wherein the reference pulse generating module generates a 3.33ms reference clock pulse. 4. a kind of OAM message transmission system as claimed in claim 1 or 2, is characterized in that, described message counting module, message period control module, message driving module all comprise 128 channels, and each channel can accommodate Control parameters of 16 OAM packets.