KR20140044983A - Data processing apparatus and method for massive data path change at high speed - Google Patents

Abstract

Disclosed are a data processing device for converting a path of massive data at high speed and a method for the same. The data processing method according to an embodiment of the present invention groups data transmission tunnels in a port or card unit and manages the tunnel groups in a data transmission table by using a tunnel group message. Therefore, the data processing method can continuously provide a data transmission service without interruption by rapidly converting massive tunnel paths included in a link, a port, or a card into an alternative path when the physical or virtual link, the port, or the card malfunction.

Description

Data processing apparatus and method for massive data path switching at high speed {data processing apparatus and method for massive data path change at high speed}

The present invention relates to packet forwarding networks, and more particularly, to data processing and data rerouting techniques in packet forwarding networks.

Due to the rapid increase in the number of Internet users, the increase of mobile data usage by smartphones is increasing rapidly. In particular, the increase in data production and consumption by smartphone users and smartphones is creating data traffic that cannot be afforded by existing line technology-based telephone networks. Due to the usage of smartphones, the increase in the consumption of communication bands caused by data packets is increasing rather than the communication band consumption caused by telephones. To overcome this, the existing network technology-based network infrastructure has been replaced by packet technology-based network infrastructure. Desire is growing.

The worldwide spread and proliferation of the Internet has driven demand for equipment and devices used to build packet-based network infrastructures, and economies of scale have resulted in lower prices for related equipment and devices. Ethernet, which is a major infrastructure in the Internet data network, is a strong candidate for replacing the existing high-cost network technology because the cost and energy consumption of related parts and equipment are low due to the simplicity and ease of data relaying. It is said to be a hybrid technique.

IP-based lookup in packet relaying on the network consumes a lot of processing resources and memory resources. Therefore, multi-protocol label switching (MPLS) technology capable of packet switching is widely used in the center of the network. Attempts have been made to simplify this technology and apply it to data transmission networks such as circuit-based backhaul networks. As a result, MPLS-TP (multi protocol label switching-Transport Profile) technology and Ethernet are combined or Some modified data packet switching techniques are emerging.

Simplified transmission technology compared to existing MPLS, as demand for data packet transmission network technology capable of providing low-cost / low-energy packet transmission while accommodating definite transmission service, line breakdown capability and line management capability of existing circuit network is increased In addition, attempts are being actively made to apply MPLS-TP technology, which adds configuration path recovery and management capabilities, to transmission equipment and transmission networks. The use of simple packet switching for packet relaying is not unreasonable for realizing large data transmission technology. However, due to the packet-based approach, it is difficult to implement definite path service and path management and recovery capability. In addition, large-capacity data transmission can accommodate a large number of tunnel paths in one transport pipe, which can reduce the cost of tunnel path services, while on the other hand, the cost to realize the tunnel path recovery and management functions provided by the circuit network. And difficulties are increasing.

According to an embodiment of the present disclosure, in case of a physical or virtual link or port or card failure in a transmission device that adopts a new data packet transmission technology, a large amount of tunnel paths belonging to the link or port or card may be quickly switched to an alternate path to transmit data. The present invention proposes a data processing apparatus and a method for continuously providing a service without interruption.

In a packet forwarding network according to an embodiment, a data processing method of a node includes grouping data transmission tunnels by port or card unit and managing a grouped tunnel group through a data transmission table using a tunnel group message. Include.

Grouping includes assigning a tunnel group identifier by designating data transmission tunnels using a common physical or virtual link or port as one port tunnel group, and assigning data transmission tunnels using a common line matching card to a single port tunnel group. Designating a card tunnel group may include at least one of allocating a tunnel group identifier.

The managing may include setting the contents of the data transmission table for each tunnel group by using the tunnel group identifier, and reflecting the contents of the tunnel group message in the data transmission table by transmitting and receiving tunnel group messages between cards for each tunnel group. can do.

Reflecting in the data transmission table, generating a tunnel group message including the status information of the failed port or card in the event of a port or card failure to transmit to the other cards in the node, and receiving the tunnel group message The cards may include changing the contents of the corresponding tunnel group in the data transmission table. At this time, in the step of changing the contents of the tunnel group, it is possible to collectively switch the transport tunnels included in the tunnel group to alternative tunnels corresponding to each transport tunnel.

Reflecting in the data transmission table includes creating, deleting or changing a tunnel group in the data transmission table, adding, deleting or changing a tunnel included in the tunnel group in the data transmission table, and changing a state of the tunnel group. Notifying or delivering a command to the tunnel group, and notification of a change in the state of the tunnel included in the tunnel group, or transmitting a command for the tunnel may be performed.

Reflecting in the data transmission table, when receiving a tunnel group message from another card in the node, analyzing the received tunnel group message, searching for entries in the data transmission table with the failed tunnel group identifier, and searching the entries. The method may include changing an active output port to an alternative output port and changing an activation group identifier to an alternative group identifier.

Reflecting in the data transmission table, monitoring the state of the port to detect the state change of the tunnel corresponding to the failed port, and generates a tunnel group message related to the detected state of the port and the tunnel and transmits it to another card. It may include the step.

The tunnel group message may include a tunnel group identifier list, tunnel group information, and information on data transmission tunnels included in each tunnel group. The data transfer table may include data transfer destination information, an active output port, an alternate output port, an activation group identifier, an alternate group identifier, and table entry status information.

A data processing apparatus of a node in a packet forwarding network according to another embodiment includes a processor for grouping data transmission tunnels by port or card and managing a tunnel group in a data transmission table using a tunnel group message.

The processor assigns a tunnel group identifier by designating data transmission tunnels using a common physical or virtual link or port as one port tunnel group, and assigns data transmission tunnels using a common line matching card to one card tunnel group. You can assign a tunnel group identifier by specifying it.

When the processor receives the tunnel group message from another card in the node, the processor may update the contents of the data transmission tunnel included in the failed port or the tunnel group of the card in the data transmission table.

When the processor receives a tunnel group message from another card in the node, the processor analyzes the received tunnel group message to search for entries in the data transmission table with the failed tunnel group identifier, and replaces the active output port with the active output port. And the activation group identifier to the alternate group identifier.

The processor monitors the port status, detects changes in the tunnel corresponding to the failed port, and generates and sends tunnel group messages related to the port status and the status change of its tunnel to another card, or tunnel group messages from another card. It may be a line processor for receiving.

The processor may be an api processor that monitors the status of the line matching card, generates a tunnel group message related to the status of the line matching card, and changes in the belonging tunnel to another card, or receives a tunnel group message from another card. .

According to a further embodiment includes a transmitter having a data transmission table, the processor may change the contents of the data transmission table of the transmitter according to the tunnel group message.

According to a further embodiment includes a transmission unit having a data transmission table, if the data transmission table needs to be changed, the processor first changes the contents of its data transmission table, and transmits the result to the transmission unit, the transmission unit sends the changes It can be finally reflected in its own data transfer table.

According to an embodiment of the present disclosure, when a physical or virtual link or port including a plurality of data tunnels in a packet transmission network fails or a problem occurs in a line matching card including a plurality of links or ports, tunnel grouping Through tunnel group messaging, a large number of tunnels can be provided in a short time, and data transmission services that are provided through each tunnel can be continuously provided without interruption.

1 is a diagram illustrating a network structure showing a concept in which active tunnels belonging to a broken link are switched to an alternate tunnel at a time due to a link failure of a tunnel management node in a packet forwarding network according to an embodiment of the present invention;
2 is a conceptual diagram of a data processing apparatus of a tunnel management node for fast bulk data path switching according to an embodiment of the present invention;
3 is a structural diagram of a transmission table according to an embodiment of the present invention;
4 is a structural diagram of a tunnel group message for transferring tunnel group information between processors according to an embodiment of the present invention;
5 is a flowchart illustrating a data processing method of a data processing apparatus of a node according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the terms described below are defined in consideration of the functions of the present invention, and this may vary depending on the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

1 is a diagram illustrating a network structure showing a concept in which active tunnels belonging to a broken link are switched to an alternate tunnel at a time due to a link failure of a tunnel management node in a packet forwarding network according to an embodiment of the present invention.

In order to realize an uninterrupted data transmission service and a differential transmission service according to data attributes, a plurality of data tunnels 21 to 26 are configured on a network, and the data transmission methods are different for each tunnel 21 to 26. On the other hand, if a problem occurs in the active tunnels 21 to 23 by constructing a tunnel section having the same origin and destination at an important transmission point as the active tunnels 21 to 23 and the corresponding alternative tunnels 24 to 26, the alternative tunnel ( 24 ~ 26) should be able to switch the data transmission path.

Nodes in charge of data transmission or relay in the network have a tunnel management node (1, 3, 14, 15) for tunnel management and data transmission, and a tunnel relay node (for data transmission in the middle of the tunnel) according to its role. 13 to 16), and end nodes 2, 4 to 6, which are located at the last point of data transmission, generate data, function as the final destination of data, or serve as start / end points of transmission service. have. The function of the transmitting node can be duplicated in one network equipment. The end nodes 2, 4 to 6 and the tunnel management nodes 1, 3, 14 and 15 may be connected to one or more end channels 27 to 30.

The data transmission tunnels 21 to 26 reach their final destination via a single or multiple transmission networks 7 to 10 composed of several transmission nodes. Between the tunnel management nodes 1, 3, 14 and 15, or between the tunnel management nodes 1, 3, 14 and 15 and the tunnel relay nodes 13 to 16, or between the tunnel relay nodes 13 to 16, Or it may be connected to the virtual neighbor node link (17 ~ 20). If a problem occurs in the physical or virtual neighbor node link 17 of the tunnel management node 1, 3, 14, or 15, the active tunnels 21 through 23 passing through the neighbor node link 17 are temporarily replaced. (24--26). In order to minimize the temporary transmission service downtime caused in this process, the present invention uses a method of managing data transmission tunnels by a specific port, link, or card, and managing the transmission tunnels by a tunnel group. Simplify the large number of tunnel interruptions and their recovery that can be caused by specific port, link, or card problems at 1,3,14,15.

2 is a conceptual diagram of a tunnel management node 200 data processing apparatus for switching a large amount of data paths at high speed according to an exemplary embodiment.

Referring to FIG. 2, a data processing apparatus of a high-capacity large-capacity tunnel management node 200 includes at least one line matching card 201 ˜ 204 which performs data classification, buffering, header change, and transmission functions related to data transmission, and a network. One or more AP cards 205 for performing control data processing and system management functions, and one or more switch cards 206 for switching or relaying data between the line matching cards 201 to 204.

The line matching cards 201 to 204 are transmitting units 212 to 215 performing data transmission related functions, card management, card initialization, transmission unit 212 to 215 management, network control data processing, and relay functions. Line processors 207 to 210 and physical or virtual neighbor node links 242 to 247 serving as data paths with neighbor nodes are included. The transmission units 212 to 215 include transmission tables 217 to 221 for finding an output port corresponding to the contents of the header of the incoming data.

The contents update of the transmission tables 217 to 221 may be performed through various methods. For example, the line processors 207 to 210 may receive the messages 232 to 235 and 252 from the other line processors 207 to 210 to change the transmission table 217 to 221. Alternatively, the line processors 207 to 210 may receive the messages 236 to 239 and 253 from the api processor 211 to change the transmission table 217 to 221. Alternatively, the transmission unit 212 to 215 may directly change the transmission table 217 to 221 by receiving a content update related message from another transmission unit 212 to 215. Alternatively, the transmission unit 212 to 215 may directly change the transmission table 217 to 221 by receiving the APC 211 message via the data switch 229.

The AP card 205 is an AP processor 211 for performing network control data processing and system management functions, an AP memory 216 including data related to the transmission table 221, and a processor for switching and relaying messages between processors. A message repeater 228. The processor message repeater 228 may be located in the switch card 206 in some cases.

The switch card 206 includes a data switch 229 for performing data switching and relaying functions between the line matching cards 201 to 204, and a switch processor for initializing, managing, and controlling the data switch 229 of the switch card. 251. In some cases, a communication channel is connected between the data switch 229 and the APC processor 211 so that the APC processor 211 transmits the lines 212 to 215 of the line matching cards 201 to 204 through the data switch 229. You can also manage.

The transmission units 212 to 215 of the line matching cards 201 to 204 are tunnel start and termination management points, and perform data tunnel transmission service start and termination functions from the end channels 248 to 250. The tunnel consists of active tunnels (222 ~ 224) and alternative tunnels (225 ~ 227) for reliable data tunnel transmission service, and if there is a problem with the active tunnels (222 ~ 224), data is transferred to the alternative tunnels (225 ~ 227). To be transmitted. This is possible by changing the transmission tables 217 to 221 of the transmission units 212 to 215. For example, if you want to switch a specific active tunnel 222 to an alternative tunnel 225 for data transmission, replace the output port corresponding to the data information to use the active tunnel 222 in the transmission tables 217 to 221. Change to the output port of (225).

As mentioned with reference to FIG. 1, the problem is that a failure 240 occurs on a physical or virtual link or port used by a plurality of tunnels, or a problem 241 occurs on a specific line matching card 204. If you need to perform tunnel switching. In this case, much of the contents of all transmission tables 217 to 221 in the tunnel management node 200 should be changed, and messaging (232) between a large number of processors 207 to 210, 211 and 251 is required to change the transmission tables 217 to 221. (235 ~ 252) (236 ~ 239,253) should be involved. In such a situation, in order to replace a large number of tunnels in a short time, rather than a single tunnel replacement by tunnel, a simplified interprocessor message transmission and transmission table through link group, port and card tunnel grouping as described in the following description (217) A change method is needed.

According to an embodiment of the present disclosure, tunnels 222 and 223 using a specific physical or virtual link or port 247 are designated as the port tunnel group 230 and tunnels 222 ˜ using the specific line matching card 204. 224 is designated as the card tunnel group 231 to assign an identifier that can be used in the tunnel management node 200 for each group.

If it is necessary to change a specific tunnel group to an alternate tunnel at a time by configuring the transmission table 217 to 221 to reflect the tunnel group identifier, selectively only the contents of the entry related to the tunnel group in the transmission table 217 to 221. Make it easy to update.

Each of the processors 207 to 210, 211 and 251 of the tunnel management node 200 generates and transmits tunnel group messages 232 to 235 and 252 and 236 to 239 and 253 for each tunnel group 230 and 231, and transmits and receives the contents of the tunnel group message. The analysis reflects the message contents in the transmission tables 217 to 221.

When the line processor 207 to 210 monitors the state of a physical or virtual link or port 242 to 247 and detects a port failure 240, the line processor 207 and the port tunnel group related to the state of the port 247 230) The messages 232 ˜ 235 252 are transmitted to the processors 207 ˜ 210, 211 251 of the tunnel management node 200. Processors 207 to 210, 211 and 251 that have received the port tunnel group 230 messages 233 to 236 and 252 selectively update the contents of entries related to the corresponding port tunnel group 230 in the transmission table 217 to 221 and then the port tunnel group. Substitute the tunnels (222, 223) belonging to (230).

When the line processors 207 to 210 need to change, add or delete tunnels 222 to 227 and 222 to 224 belonging to the ports 242 to 247 or the line matching cards 201 to 204, 247 or tunnel group 230 (231) messages 233 to 236, 252 (237 to 239) related to the change of the tunnels (222, 223) (222 to 224) belonging to the line matching card (204). The transmission tables 217 to 221 in the management node 200 may reflect changes of the belonging tunnels 222 and 223 and 222 to 224 of the specific tunnel group 230 and 231.

Processors 207 to 211 and 251 in the tunnel management node 200 include the tunnel group 230 and 231 identifier list in a storage device such as memory, and add, delete or change the new tunnel group 230 and 231 identifier to this list during operation. Can be. In addition, the processors 207 to 211 and 251 include a list of tunnels 222, 223 and 222 to 224 belonging to the tunnel group identifier 230 and 231 in a storage device such as a memory, and add or delete a new tunnel to the list during operation. You can change it. The contents of the tunnel group identifier list and the tunnel list are reflected in the transmission tables 217 to 221 of the transmission units 212 to 215. The sharing of the tunnel group information 230 and 231 and the tunnel information 222 223 and 222 224 of each tunnel group between the processors 207 through 211 and 251 during the operation of the tunnel management node 200 is performed by changing the list and the list above. It is possible through exchange of tunnel group messages (233 ~ 236,252) (237 ~ 239).

The line processors 207 to 210 modify the transmission tables 217 to 221 of the transmission units 212 to 215 to replace the tunnel. In some cases, the transmission tables 217 to 221 may be used to replace the tunnels. And the line processors 207 to 210 exist in the same or modified form in each of the memories, and if the transfer table needs to be changed, the transfer tables 217 to 221 in the memory of the line processors 207 to 210 are first changed. The result may be finally reflected to the transmission tables 217 to 221 of the transmission units 212 to 215. The tunnel group identifier may or may not be included in the transmission tables 217 to 221 in the transmission units 212 to 215. If the transmission table exists in the memory of the line processors 207 to 210, the configuration of the table can be easily changed. In addition, the contents update is faster by the tunnel group identifier, and it is convenient to reorganize the table structure or to form a plurality of tables to easily reflect the table changes in the transmission tables 217 to 221 in the transmission units 212 to 215.

If the AP processor 211 monitors the status of the line matching cards 201 to 204 in an interrupt or polling manner and recognizes a card failure 241, the line matching card 204 and the problem are found. The card tunnel group 231 message 236 to 239 253 related to the state is transmitted to the processors 207 to 209 and 251 of the tunnel management node 200. Processors 207 to 209 and 251 having received the card tunnel group 231 messages 236 to 239 and 253 selectively update the entry contents related to the tunnel group 231 of the card in the transmission table 217 to 221 and then perform the card tunnel. Substitute the tunnels 222 to 224 belonging to the group 231.

In addition to the transmission table 217 to 221 of the above-described method of changing the transmission table 217 to 221 for tunnel switching, the switch card without changing the transmission table 217 to 221 or updating some transmission tables 217 to 221. The tunnel switch operation may be performed by changing the data switch 229 setting (switching and relay setting change) of 206. Also in this case, when tunnels are grouped into the port tunnel group 230 and the card tunnel group 231, and there is a problem with the ports 242 to 247 to the line matching cards 201 to 204, tunnel group based messaging (232 to 239, 252, 253). And tunnel group-based selective data switch 229 modifications to enable large-scale tunnel replacement in a short time.

3 is a structural diagram of a transmission table 300 according to an embodiment of the present invention.

2 and 3, the transmission table 300 includes an active output port 303, an activation group identifier 305, an alternate output port 304, and an alternate group identifier 306.

The destination information 302 of the input data of the transmission table 300 is used to find the output port 303 of the data. The transmission table 300 may exist in the transmitters 212 through 215, the line processors 207 through 210, and the memory of the AP processors 211, and may exist only in some cases.

The transmission table 300 may be configured in the same structure or in a different format according to its position. The transmission table 300 present in the transmission units 212 to 215 is more simplified than the embodiment of FIG. 3 because of the limited memory resources and the purpose of high-speed data classification and transmission when compared to the memory resources of the processor. It can be a table structure. On the other hand, the transmission table 300 existing in the memory of the processor is a structure that is easy to process while including more information by utilizing a relatively free memory resource. The transmission table 300 of FIG. 3 has a different configuration according to its position as described above. Hereinafter, the transmission table 300 will be described based on the structure of the transmission table 300 of FIG. do.

Referring to FIG. 3, when data is input to the transmission units 212 to 215, an entry of the transmission table 300 corresponding to the destination information of the data is searched and the data is output to the output port in the entry. To this end, the transmission table 300 of the transmission unit 212 to 215 should include at least data destination information 302 and output port information 303.

The table update process 301 manages the transmission table 300 and updates the contents, and adds an entry to the transmission table 300 or replaces the active output port 303 with an output port 304 according to the tunnel group message. You can change the configuration, change the group of tunnels, add tunnels of a specific group, and so on. The transmission table 300 of FIG. 3 includes an activation group identifier 305 and an alternate group identifier 306, which are output ports 242 to tunnels when the active output port 303 is replaced with the alternate output port 304. 247) or a situation in which the line matching cards 201 to 204 need to be changed may occur. As a result, a port or card based tunnel group identifier is also activated based on the activation group identifier 305 and the replacement group identifier 306 information. This is because the group identifier 305 needs to be changed from the substitute group identifier 306.

According to an embodiment, each of the table entries 308-314 of the transmission table 300 includes an entry state 307, which may be used for the purpose of displaying the state of each entry or defining the state of each entry. . The state of each entry may be, for example, during normal operation, during change, during stop, and so on.

According to an embodiment, when a failure occurs in a specific port or line matching card, a tunnel group message corresponding to the corresponding port or card is generated and transmitted to each processor. Upon receiving the tunnel group message, the processor analyzes the message content through the table update process 301 and searches for entries 308 to 314 corresponding to the tunnel group identifier in question. In the searched entries, the active output port may be changed to an alternate output port, and the activation group identifier may be changed to an alternative group identifier. In some cases, the status of the entry may be defined as another value.

The above-described table update process 301 may be directly performed by the line processor for the transmission table of the transmitter. Alternatively, the line process may modify the transmission table in its memory first and then reflect the result in the transmission table of the transmission unit. In the latter case, the table structure can be organized in a format and order that facilitates the retrieval and modification of tunnel groups and tunnels, while allowing more information to be contained in the contents of the transmission table in the line processor's memory. There is an advantage that the negative transmission table structure can be made into a simplified table structure that enables high-speed data classification and transmission.

4 is a structural diagram of a tunnel group message for transferring tunnel group information between processors according to an embodiment of the present invention.

Referring to FIG. 4, the tunnel group message 400 includes a task of creating, deleting, or changing a specific tunnel group, adding, deleting, or changing a member tunnel of a specific tunnel group, and notification of a state change of a specific tunnel group. For example, it is used to send a command to a specific tunnel group, to notify a state change of a specific tunnel, and to send a command to a specific tunnel.

For this purpose, the tunnel group message 400 includes a card information 408 field and a group identifier 405 field for defining a card-based tunnel group identifier, and defines a tunnel group identifier based on a physical or virtual link or port. It includes a port information 409 field and a group identifier 405 field. In addition, the tunnel group message 400 may include a group status 406 field for status notification for a specific tunnel group, and may include a group command 407 field for requesting to perform a command for a specific tunnel group. In addition, the tunnel group message 400 may include a time information 404 field for delivering information related to generation time of the tunnel group message 400 or event occurrence time. The message type and size 403 field includes the type of tunnel group message 400 and the header to valid data size of the message.

The sequence 410 field indicates the order of the tunnel group message 400, and the numbering indicating the order of the message may be set to be used based on a specific processor, a specific event, a specific group, or a specific tunnel. The error check code 411 field is used to insert an error check code for recognizing and correcting a content error in the transmission and reception of the tunnel group message 400. In addition, the tunnel identifier data information header 413 and the tunnel data 414 fields may be added to the tunnel group message 400 for more detailed status transmission and command delivery for a specific tunnel. The tunnel identifier data information header 413 and tunnel data 414 fields can be continuously added to the tunnel group message 400. The total data size and number 412 fields can be used to indicate the number and size. .

The tunnel group message 400 can be broadly divided into a message packet header 401 and a message content 402. The message packet header 401 is for transmitting and receiving the tunnel group message 400 in the tunnel management node 200. Transmit and receive addresses, protocols, and the like.

5 is a flowchart illustrating a data processing method of a data processing apparatus of a node according to an embodiment of the present invention.

Referring to FIG. 5, the data processing apparatus groups the data transmission tunnels by port or card unit (500). In the grouping step 500, the data processing apparatus may assign a tunnel group identifier by designating data transmission tunnels using a common physical or virtual link or port as one port tunnel group. Alternatively, a tunnel group identifier may be assigned by designating data transmission tunnels using a common line matching card as one card tunnel group.

Subsequently, the data processing apparatus manages the grouped tunnel groups through the data transmission table using the tunnel group message (510). In operation 510, the data processing apparatus sets the contents of the data transmission table for each tunnel group by using the tunnel group identifier, transmits and receives the tunnel group message contents between the cards for each tunnel group, and transmits the contents of the tunnel group message to the data transmission table. Can reflect.

The tunnel group message may include a tunnel group identifier list, tunnel group information, and information on data transmission tunnels included in each tunnel group. The data transfer table may include data transfer destination information, an active output port, an alternate output port, an activation group identifier, an alternate group identifier, and table entry status information.

According to an embodiment, in the step of reflecting on the data transmission table, the data processing apparatus generates a tunnel group message including state information of a failed port or card when a port or card failure occurs and transmits it to other cards in the node. After receiving the Tunnel Group message, the cards change the contents of the Tunnel Group in the data transfer table. In this case, the transmission tunnels included in the corresponding tunnel group may be collectively switched to the alternative tunnel corresponding to each transmission tunnel.

According to an embodiment, in the step of reflecting on the data transmission table, the data processing apparatus may create, delete, or change a tunnel group in the data transmission table, add, delete, or change a tunnel included in the tunnel group in the data transmission table, It can notify the status change of the tunnel group, or send a command to the tunnel group, or notify the status change of the tunnel included in the tunnel group, or send a command for the tunnel.

According to an embodiment, when the data processing apparatus receives the tunnel group message from another card, the data processing apparatus analyzes the received tunnel group message to search for entries having a failed tunnel group identifier in the data transmission table. For the searched entries, the active output port can be changed to the alternate output port and the activation group identifier can be changed to the alternate group identifier.

According to an embodiment, in the step of reflecting on the data transmission table, the data processing apparatus monitors a port state to detect a state change of a tunnel corresponding to a failed port, and a tunnel group message related to a detected state of a port and a tunnel. Create and send to other cards.

The embodiments of the present invention have been described above. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1,3,14,15: Tunnel management node 2,4 ~ 6: End node
13 ~ 16: Tunnel relay node 201 ~ 204: Line matching card
205: API Card 206: Switch Card
207 ~ 210: Line processor 212 ~ 215: Transmission unit
217 ~ 221: Transmission table 211: AP processor
216: memory 228: processor message repeater
229 data switch

Claims (20)

In the data processing method of a node in a packet forwarding network,
Grouping data transmission tunnels by port or card; And
Managing the grouped tunnel groups through a data transmission table using a tunnel group message;
Data processing method comprising a. The method of claim 1, wherein the grouping comprises:
Assigning a tunnel group identifier by designating data transmission tunnels using a common physical or virtual link or port as one port tunnel group; And
Assigning a tunnel group identifier by designating data transmission tunnels using a common line matching card as one card tunnel group;
Data processing method comprising at least one of. The method of claim 1, wherein the step of managing,
Setting contents of a data transmission table for each tunnel group by using the tunnel group identifier; And
Transmitting and receiving the tunnel group message between the cards for each tunnel group and reflecting the contents of the tunnel group message in the data transmission table;
Data processing method comprising a. The method of claim 3, wherein the reflecting on the data transmission table comprises:
Generating a tunnel group message including status information of a failed port or card when the port or card fails, and transmitting the generated tunnel group message to other cards in the node; And
Receiving the tunnel group message, changing the contents of the corresponding tunnel group in the data transmission table;
Data processing method comprising a. The method of claim 4, wherein the changing of the contents of the tunnel group comprises:
And converting data transmission tunnels included in the tunnel group into alternative tunnels corresponding to each data transmission tunnel. The method of claim 3, wherein the reflecting on the data transmission table comprises:
Creating, deleting, or changing a tunnel group in the data transmission table;
Adding, deleting or changing a data transmission tunnel included in the tunnel group in the data transmission table;
Notifying a change of state of the tunnel group or transmitting a command for the tunnel group; And
Notifying a state change of a data transmission tunnel included in the tunnel group or transmitting a command for the data transmission tunnel;
Data processing method characterized in that to perform any one of. The method of claim 3, wherein the reflecting on the data transmission table comprises:
When receiving a tunnel group message from another card in the node, analyzing the received tunnel group message to search for entries in the data transmission table with the failed tunnel group identifier; And
Changing the active output port to an alternate output port for the retrieved entries and changing the activation group identifier to the alternate group identifier;
Data processing method comprising a. The method of claim 3, wherein the reflecting on the data transmission table comprises:
Monitoring a port state and detecting a state change of a data transmission tunnel corresponding to a failed port; And
Generating and transmitting a tunnel group message related to the detected state of the port and the tunnel to another card;
Data processing method comprising a. The method according to claim 1,
The tunnel group message includes a tunnel group identifier list, tunnel group information, and information on data transmission tunnels included in each tunnel group. The method according to claim 1,
And the data transfer table includes data transfer destination information, an active output port, an alternate output port, an activation group identifier, an alternate group identifier, and table entry status information. A data processing apparatus of a node in a packet forwarding network,
A processor for grouping data transmission tunnels by port or card and managing a tunnel group in a data transmission table using a tunnel group message;
Data processing apparatus comprising a. 12. The apparatus of claim 11,
Designate tunnel group identifier by designating data transmission tunnels using common physical or virtual link or port as one port tunnel group, and designate data transmission tunnels using common line matching card as one card tunnel group. And a group identifier. 12. The apparatus of claim 11,
And receiving the tunnel group message from another card in the node, updating the contents of the data transmission tunnel included in the failed port or the tunnel group of the card in the data transmission table. 12. The apparatus of claim 11,
When a tunnel group message is received from another card in the node, it analyzes the received tunnel group message and searches the data transmission table for entries with the failed tunnel group identifier, changes the active output port to an alternate output port for the detected entries. And an active group identifier is replaced with an alternate group identifier. 12. The apparatus of claim 11,
Monitors the port status, detects changes in the data transmission tunnel corresponding to the failed port, generates tunnel group messages related to the port status and the status of the tunnel, and sends them to another card or sends tunnel group messages from another card. And a line processor for receiving. 12. The apparatus of claim 11,
API processor that monitors the status of the line matching card and generates and transmits a tunnel group message related to the status of the line matching card and a change in the belonging tunnel to another card or receives a tunnel group message from another card. Processing unit. The method of claim 11,
The tunnel group message includes a tunnel group identifier list, tunnel group information, and information on data transmission tunnels included in each tunnel group. The method of claim 11,
And the data transfer table includes data transfer destination information, an active output port, an alternate output port, an activation group identifier, an alternate group identifier, and table entry status information. The method of claim 11,
A transmission unit having a data transmission table; Further comprising:
And the processor changes the contents of the data transmission table of the transmitter according to the tunnel group message. The method of claim 11,
A transmission unit having a data transmission table; Further comprising:
When the data transfer table needs to be changed, the processor first changes the contents of its data transfer table and transmits the result to the transfer unit, and the transfer unit finally reflects the change in its data transfer table. Device.

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