CN108809792B

CN108809792B - Message data control method and device

Info

Publication number: CN108809792B
Application number: CN201710281547.7A
Authority: CN
Inventors: 张瑜
Original assignee: Nanjing ZTE New Software Co Ltd
Current assignee: Nanjing ZTE New Software Co Ltd
Priority date: 2017-04-26
Filing date: 2017-04-26
Publication date: 2020-09-08
Anticipated expiration: 2037-04-26
Also published as: CN108809792A

Abstract

The invention provides a method and a device for controlling message data, which are used for acquiring the priority of each pseudo wire PW in a multicast networking topological structure; screening each PW based on the priority of each PW and preset screening conditions to obtain a target PW; generating a blocking message, wherein the blocking message comprises the name of the target PW, the Internet protocol IP address of the target PW and a preset first message code; and sending the blocking message to the multicast networking topological structure. Therefore, only the forwarding attribute of the multicast networking topological structure is configured, the target PW is blocked, the two-layer multicast forwarding function of the target PW is destroyed, the configuration process is simpler on the premise of not influencing the flow forwarding of each node in the multicast networking topological structure, and the configuration cost is reduced.

Description

Message data control method and device

Technical Field

The present invention relates to the field of storage technologies, and in particular, to a method and an apparatus for controlling packet data.

Background

Multicast is one of three modes of IP (Internet Protocol) data transmission, and compared with unicast and broadcast, multicast has higher data transmission efficiency. When the network terminal needs specific information, the multicast source sends the information once, and the multicast router establishes tree-type routing for the multicast data packet by means of the multicast routing protocol, so that the transmitted information is copied and forwarded at the fork nodes as far as possible. And multicast VPN (Virtual private network) is widely applied, providing a safer network transmission environment, and is divided into two-layer VPN and three-layer VPN.

At present, a common multicast networking mode is integrated in an access ring and a convergence ring, and the access ring and the convergence ring are connected in a mode of bridging a two-layer VPN and a three-layer VPN, and in order to ensure that a forwarding process of multicast traffic is normal, configuration of multiple attributes is required to be performed on convergence layer equipment and inner and outer layers of the two-layer VPN, for example, a primary device and a secondary device are distinguished by an attribute of a configuration bridge interface, an HVPLS (Hierarchical virtual private local area network service) is configured on the access ring, and forwarding of the multicast traffic is realized by the primary device through a SPOKE attribute configured by a Pseudo Wire (Pseudo Wire). Therefore, the configuration process of the current convergence layer equipment is too complex and cumbersome, and the configuration cost is high.

Disclosure of Invention

The embodiment of the invention aims to provide a data caching method and device, and solves the problems that the configuration process of the current convergence layer equipment is too complex and tedious, and the configuration cost is high.

In order to achieve the above object, an embodiment of the present invention provides a method for controlling packet data, including:

acquiring the priority of each pseudo wire PW in a multicast networking topology structure;

screening each PW based on the priority of each PW and preset screening conditions to obtain a target PW;

generating a blocking message, wherein the blocking message comprises the name of the target PW, the Internet protocol IP address of the target PW and a preset first message code;

and sending the blocking message to the multicast networking topological structure.

The embodiment of the present invention further provides a device for controlling packet data, including:

the first acquisition module is used for acquiring the priority of each pseudo wire PW in the multicast networking topology structure;

the screening module is used for screening each PW based on the priority of each PW and preset screening conditions to obtain a target PW;

a first generating module, configured to generate a blocking packet, where the blocking packet includes a name of the target PW, an internet protocol IP address of the target PW, and a preset first packet code;

and the first sending module is used for sending the blocking message to the multicast networking topology structure.

An embodiment of the present invention further provides a computer storage medium, where one or more programs executable by a computer are stored in the computer storage medium, and when the one or more programs are executed by the computer, the computer is caused to execute the method for controlling packet data as provided above.

One of the above technical solutions has the following advantages or beneficial effects:

the embodiment of the invention obtains the priority of each pseudo wire PW in a multicast group network topology structure; screening each PW based on the priority of each PW and preset screening conditions to obtain a target PW; generating a blocking message, wherein the blocking message comprises the name of the target PW, the Internet protocol IP address of the target PW and a preset first message code; and sending the blocking message to the multicast networking topological structure. Therefore, only the forwarding attribute of the multicast networking topological structure is configured, the target PW is blocked, the two-layer multicast forwarding function of the target PW is destroyed, the configuration process is simpler on the premise of not influencing the flow forwarding of each node in the multicast networking topological structure, and the configuration cost is reduced.

Drawings

Fig. 1 is a flowchart of a method for controlling message data according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a multicast networking topology according to an embodiment of the present invention;

fig. 3 is a flowchart of another method for controlling packet data according to an embodiment of the present invention;

fig. 4 is a structural diagram of a device for controlling message data according to an embodiment of the present invention;

fig. 5 is a structural diagram of a device for controlling message data according to an embodiment of the present invention;

fig. 6 is a structural diagram of a device for controlling message data according to an embodiment of the present invention;

fig. 7 is a structural diagram of another message data control apparatus according to an embodiment of the present invention;

fig. 8 is a structural diagram of another message data control apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, an embodiment of the present invention provides a method for controlling packet data, which is applied to a routing device, and includes the following steps:

step S101, acquiring the priority of each pseudo wire PW in the multicast group network topology structure.

In this step, a multicast networking topology is as shown in fig. 2, in which AGG indicates an aggregation layer device, ACC indicates an access layer device, the AGG and the ACC form a ring topology, each AGG or ACC is a node, and forwarding and switching of a two-layer VPN multicast on the ACC are realized by blocking and restoring a two-layer multicast forwarding function between the nodes. Before the forwarding process is carried out, forwarding attributes of AGG1 and AGG2, namely a DR attribute, need to be configured, wherein the DR attribute indicates that AGG1 and AGG2 do not distinguish the main device from the auxiliary device, and when message data are received, the message data are forwarded by AGG1 and AGG2 respectively; BFD (Bidirectional Forwarding Detection) Detection is configured between bridge interfaces of AGG1 and AGG2, and connectivity of the multicast network topology is detected by transmitting BFD Detection messages through ACC. Setting a label and priority of a PW (pseudo wire) of the AGG equipment when the AGG equipment performs two-layer VPN configuration, wherein the label indicates that the label belongs to the PW of the AGG, and if the label is set as MATP-end, the node information can be identified when the message is analyzed; each node sets PW priority respectively, and the same link PW configures the same priority. The process of forwarding the message to the ACC1 by the AGG1 may be: sending a message of an AGG1 to an ACC1, wherein the message of the AGG1 at least includes a source IP address carrying a label, a PW name and a PW priority, after the ACC1 receives the message of the AGG1, integrating local information of the ACC1 with the message of the AGG1, the local information at least includes the IP address, the PW priority and the PW name of the ACC1, sending the integrated message to the ACC2, carrying out a processing procedure such as the ACC1 by the ACC2, then forwarding the integrated message to the AGG2 by the ACC4, and finally sending the integrated message to a routing device by the AGG2 for processing, so that the message received by the routing device includes the priority of each PW in a multicast group network topology structure.

And S102, screening each PW based on the priority of each PW and preset screening conditions to obtain a target PW.

In this step, in the above step, the AGG1 and the AGG1 do not distinguish between the master device and the slave device, so that the ACC receives dual traffic when forwarding traffic, which affects the video composition effect. In order to achieve a better effect, each PW needs to be screened to find a PW, i.e. a target PW is blocked, and the screening condition may be that a PW with the lowest priority in the multicast networking topology is used as the target PW or a PW with the highest priority is used as the target PW. With reference to fig. 2, a target PW is taken as a PW between ACC1 and ACC2 for example, after a PW between ACC1 and ACC2 is blocked, on one hand, traffic is forwarded from AGG1 to ACC1, and on the other hand, traffic is forwarded from AGG2 to ACC2 through ACC4 and ACC3, thereby implementing destruction of a two-layer multicast in a multicast networking topology.

Step S103, generating a blocking message, wherein the blocking message comprises the name of the target PW, the Internet protocol IP address of the target PW and a preset first message code.

In the step, the blocking of the target PW is realized by forwarding the generated blocking message, wherein the blocking message comprises the name of the PW, the IP address of the PW and a preset first message code. The name of the PW, that is, PW DI, is used to distinguish the PW, for example, PW1, PW2, PW3, PW4, and the preset first message CODE is a CODE indicating that the message is a blocking message, for example, the first message CODE may be CODE1, and when it is identified that there is CODE1 in the message, the message is a blocking message.

Step S104, the blocking message is sent to the multicast networking topological structure.

In this step, the blocking packet is sent to the multicast networking topology, that is, the blocking packet is forwarded through AGG1 and AGG 1. When the ACC receives the blocking message, the ACC analyzes the blocking message, obtains the name of the target PW and the IP address of the target PW, matches the local IP address with the IP of the target PW, blocks the ACC if the local IP address is consistent with the IP of the target PW, and forwards the message if the local IP address is not consistent with the IP of the target PW. Therefore, only the forwarding attribute of the multicast networking topological structure is configured, the target PW is blocked, the two-layer multicast forwarding function of the target PW is destroyed, the configuration process is simpler on the premise of not influencing the flow forwarding of each node in the multicast networking topological structure, and the configuration cost is reduced.

Optionally, before the step of sending the blocking packet to the multicast group network topology, the method further includes: acquiring a session state of Bidirectional Forwarding Detection (BFD) of the multicast networking topological structure;

the step of sending the blocking packet to the multicast group network topology includes: and if the session state of the BFD is a connected state, sending the blocking message to the multicast networking topological structure.

In this embodiment, the BFD detection mechanism is to establish a BFD session between AGG1 and AGG2, and periodically send BFD control packets along the path between them, and if one of them does not receive a BFD control packet within a predetermined time, it is determined that a failure has occurred on the path; BFD provides an asynchronous detection mode. In the mode, the systems send BFD control messages periodically, if a certain system does not receive a plurality of continuous messages, the state of the BFD session is considered to be Down; the session of BFD has four states: down, Init, Up and adminDown, when the session State is Up, the session State is communicated, the change of the session State is transmitted through the State field of the BFD message, and the system changes according to the local session State of the system and the driving State of the received BFD message at the opposite end. Therefore, when the conversation state of BFD is detected to be Up, the blocking message is sent, and the blocking accuracy is improved.

Optionally, after the step of screening the PWs based on the priorities of the PWs and preset screening conditions to obtain the target PW, the method further includes:

detecting whether a physical link of the multicast networking topology structure is in a disconnected state; if the physical link of the multicast networking topological structure is in a disconnected state, generating a recovery message, wherein the recovery message comprises the name of the target PW, the IP address of the target PW and a preset second message code; and sending the recovery message to the multicast networking topology structure.

In this embodiment, when a physical link between access stratum devices, that is, ACCs, is disconnected, for example, a physical link between the ACC3 and the ACC3 is disconnected, and a PW between the ACC2 and the ACC1 is in a blocked state, the data traffic forwarded by the AGG1 or the AGG2 does not reach the ACC2, at this time, a BFD is detected as Down, and a recovery packet is triggered to be sent, and the PW between the ACC2 and the ACC1 is recovered, thereby implementing traffic transfer of each node in the multicast networking topology. Meanwhile, the AGG or ACC analyzes and compares the transmitted recovery message, if the message is a recovery node, the blocking is recovered, and the recovery result is fed back to the routing equipment; if not, the recovery message is forwarded to the next node for the recovery node. Therefore, multicast forwarding of each node can be guaranteed when the physical link is disconnected, and BFD detection is recovered to be in an Up state when the disconnected link is recovered.

In the embodiment of the invention, the priority of each pseudo wire PW in a multicast group network topology structure is obtained; screening each PW based on the priority of each PW and preset screening conditions to obtain a target PW; generating a blocking message, wherein the blocking message comprises the name of the target PW, the Internet protocol IP address of the target PW and a preset first message code; and sending the blocking message to the multicast networking topological structure. Therefore, only the forwarding attribute of the multicast networking topological structure is configured, the target PW is blocked, the two-layer multicast forwarding function of the target PW is destroyed, the configuration process is simpler on the premise of not influencing the flow forwarding of each node in the multicast networking topological structure, and the configuration cost is reduced.

As shown in fig. 3, another method for controlling packet data provided in the embodiment of the present invention is applied to an access stratum device ACC, and includes the following steps:

step S301, receiving a blocking message sent by the routing equipment;

step S302, obtaining the name of the target PW in the blocking message and the IP address of the target PW in the blocking message;

step S303, if the IP address in the blocking message is matched with the local IP address, the target PW is blocked, otherwise, the blocking message is forwarded.

In the embodiment of the invention, the local blocking or forwarding of the blocking message is realized by analyzing the blocking message and comparing the IP address, so that the data flow is ensured to be forwarded at each node in the multicast networking topological structure without influencing the forwarding effect.

Optionally, the method further includes:

receiving a recovery message sent by the routing equipment; acquiring the name of a target PW in the recovery message and the IP address of the target PW in the recovery message; if the IP address of the target PW in the recovery message is matched with the local IP address, recovering the target PW, and otherwise, forwarding the recovery message.

In the embodiment, the recovery message is analyzed and compared with the IP address to realize local recovery or forwarding of the recovery message, so that each node can perform multicast forwarding when physical broken links occur in the multicast networking topological structure.

As shown in fig. 4, an embodiment of the present invention provides a message data control apparatus 400, including:

a first obtaining module 401, configured to obtain a priority of each pseudo wire PW in a multicast networking topology;

a screening module 402, configured to screen each PW based on a priority of each PW and a preset screening condition to obtain a target PW;

a first generating module 403, configured to generate a blocking packet, where the blocking packet includes a name of the target PW, an internet protocol IP address of the target PW, and a preset first packet code;

a first sending module 404, configured to send the blocking packet to the multicast networking topology.

Optionally, as shown in fig. 5, the apparatus 400 further includes:

a second obtaining module 405, configured to obtain a session state of Bidirectional Forwarding Detection (BFD) of the multicast networking topology;

the first sending module 404 is configured to send the blocking packet to the multicast networking topology if the session state of the BFD is a connected state.

Optionally, as shown in fig. 6, the apparatus 400 further includes:

a detecting module 406, configured to detect whether a physical link of the multicast networking topology is in a disconnected state;

a second generating module 407, configured to generate a recovery packet if a physical link of the multicast networking topology is in a disconnected state, where the recovery packet includes a name of the target PW, an IP address of the target PW, and a preset second packet code;

a second sending module 408, configured to send the recovery packet to the multicast networking topology.

Optionally, the screening module 402 is configured to screen, based on the priority of each PW, a PW with a lowest priority as a target PW; or

The screening module 402 is configured to screen a PW with the highest priority as a target PW based on the priority of each PW.

As shown in fig. 7, another message data control apparatus 700 provided in the embodiment of the present invention includes:

a first receiving module 701, configured to receive a blocking packet sent by a routing device;

a third obtaining module 702, configured to obtain a name of a target PW in the blocking message and an IP address of the target PW in the blocking message;

a blocking module 703, configured to block the target PW if the IP address in the blocking packet matches a local IP address, otherwise, forward the blocking packet.

Optionally, the apparatus 700 further includes:

a second receiving module 704, configured to receive a recovery packet sent by the routing device;

a fourth obtaining module 705, configured to obtain a name of the target PW in the recovery message and an IP address of the target PW in the recovery message;

a recovering module 706, configured to recover the target PW if the IP address of the target PW in the recovery message matches the local IP address, and otherwise, forward the recovery message.

It should be noted that, the apparatus 400 and the apparatus 700 may implement each process implemented in the method embodiments shown in fig. 1 to fig. 3, and on the premise of not affecting traffic forwarding of each node in the multicast networking topology, the configuration process is simpler, and configuration cost is reduced, and in order to avoid repetition, the description is not repeated here.

It will be understood by those skilled in the art that all or part of the steps of the method for implementing the above embodiments may be implemented by hardware associated with program instructions, and the program may be stored in a computer readable medium, and when executed, the program includes the following steps:

Optionally, before the step of sending the blocking packet to the multicast group network topology, the method further includes:

acquiring a session state of Bidirectional Forwarding Detection (BFD) of the multicast networking topological structure;

the step of sending the blocking packet to the multicast group network topology includes:

and if the session state of the BFD is a connected state, sending the blocking message to the multicast networking topological structure.

detecting whether a physical link of the multicast networking topology structure is in a disconnected state;

if the physical link of the multicast networking topological structure is in a disconnected state, generating a recovery message, wherein the recovery message comprises the name of the target PW, the IP address of the target PW and a preset second message code;

and sending the recovery message to the multicast networking topology structure.

Optionally, the step of screening each PW based on the priority of each PW and a preset screening condition to obtain a target PW includes:

based on the priority of each PW, screening the PW with the lowest priority as a target PW; or

And screening the PW with the highest priority as a target PW based on the priority of each PW.

Optionally, receiving a blocking message sent by the routing device;

acquiring the name of a target PW in the blocking message and the IP address of the target PW in the blocking message;

and if the IP address in the blocking message is matched with the local IP address, blocking the target PW, otherwise, forwarding the blocking message.

Optionally, receiving a recovery packet sent by the routing device;

acquiring the name of a target PW in the recovery message and the IP address of the target PW in the recovery message;

if the IP address of the target PW in the recovery message is matched with the local IP address, recovering the target PW, and otherwise, forwarding the recovery message.

The storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for controlling message data, the method comprising:

and sending the blocking message to the multicast networking topology structure so as to block the target PW, thereby realizing that only the two-layer multicast forwarding of the target PW is damaged and unicast service is not influenced.

2. The method of claim 1, wherein prior to the step of sending the blocking packet to the multicast networking topology, the method further comprises:

3. The method according to claim 1 or 2, wherein after the step of screening the respective PWs based on the priorities of the respective PWs and preset screening conditions to obtain the target PWs, the method further comprises:

4. The method according to claim 3, wherein the step of screening the respective PWs based on the priorities of the respective PWs and preset screening conditions to obtain target PWs comprises:

5. A method for controlling message data, the method comprising:

receiving a blocking message sent by a routing device;

and if the IP address in the blocking message is matched with the local IP address, blocking the target PW, realizing that only the two-layer multicast forwarding of the target PW is damaged and unicast service is not influenced, and otherwise, forwarding the blocking message.

6. The method of claim 5, further comprising:

receiving a recovery message sent by the routing equipment;

7. An apparatus for packet data control, comprising:

a first sending module, configured to send the blocking packet to the multicast networking topology, so as to block the target PW, so as to implement only destroy layer two multicast forwarding of the target PW and not affect a unicast service.

8. The apparatus of claim 7, further comprising:

the second acquisition module is used for acquiring the session state of Bidirectional Forwarding Detection (BFD) of the multicast networking topological structure;

and the first sending module is used for sending the blocking message to the multicast networking topology structure if the session state of the BFD is a connected state.

9. The apparatus of claim 7 or 8, further comprising:

the detection module is used for detecting whether a physical link of the multicast networking topological structure is in a disconnected state;

a second generating module, configured to generate a recovery packet if a physical link of the multicast networking topology is in a disconnected state, where the recovery packet includes a name of the target PW, an IP address of the target PW, and a preset second packet code;

and the second sending module is used for sending the recovery message to the multicast networking topology structure.

10. The apparatus of claim 9, wherein the screening module is configured to screen a lowest priority PW as a target PW based on the priority of the respective PWs; or

And the screening module is used for screening the PW with the highest priority as the target PW based on the priority of each PW.

11. An apparatus for packet data control, the apparatus comprising:

the first receiving module is used for receiving a blocking message sent by the routing equipment;

a third obtaining module, configured to obtain a name of a target PW in the blocking message and an IP address of the target PW in the blocking message;

and the blocking module is used for blocking the target PW if the IP address in the blocking message is matched with the local IP address, so that the two-layer multicast forwarding of the target PW is only damaged without influencing unicast service, and otherwise, the blocking message is forwarded.

12. The apparatus of claim 11, further comprising:

a second receiving module, configured to receive a recovery packet sent by the routing device;

a fourth obtaining module, configured to obtain a name of the target PW in the recovery message and an IP address of the target PW in the recovery message;

and the recovery module is used for recovering the target PW if the IP address of the target PW in the recovery message is matched with the local IP address, and otherwise, forwarding the recovery message.