CN106878164B

CN106878164B - Message transmission method and device

Info

Publication number: CN106878164B
Application number: CN201611146630.5A
Authority: CN
Inventors: 赵昌峰; 吴玲
Original assignee: Hangzhou H3C Technologies Co Ltd
Current assignee: Hangzhou H3C Technologies Co Ltd
Priority date: 2016-12-13
Filing date: 2016-12-13
Publication date: 2020-04-03
Anticipated expiration: 2036-12-13
Also published as: CN106878164A

Abstract

The application provides a message transmission method and a device, and the method comprises the following steps: receiving a first message sent by other DR member devices, wherein the first message is sent by intermediate forwarding devices connected with the other DR member devices when the other DR member devices detect that IPLs between the other DR member devices and the DR member devices are in failure; judging whether the first message carries the identifier of the equipment or not; if yes, the port of the equipment is placed in a working state or a working stopping state according to the first message. By the technical scheme, the problem of loop can be avoided, and normal use of network functions is guaranteed.

Description

Message transmission method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting a packet.

Background

Link aggregation refers to binding multiple physical ports together to form one logical port, so as to realize load sharing of traffic on each physical port. When one physical port fails, the flow can be transmitted through other physical ports, so that link redundancy is realized, and reliability is ensured. Currently, not only can multiple physical ports on one network device be bundled together, but also multiple physical ports on different network devices can be bundled together. As shown in fig. 1, port 1 and port 2 on network device 1, and port 3 and port 4 on network device 2 may be bundled together to implement port aggregation across network devices, and such port aggregation across network devices may also be referred to as DR (Distributed aggregation).

In a general case, network device 1 and network device 2 may be referred to as DR member devices, and network device 3 and network device 4 may be referred to as intermediate forwarding devices of the DR member devices. Furthermore, the aggregated ports may form a DR port group, and each port in the DR port group is referred to as a DR member port, and as described above, port 1, port 2, port 3, and port 4 are all DR member ports.

As shown in fig. 1, an IPL (Intra-Portal Link) is further included between two DR member devices (e.g., network device 1 and network device 2), the IPL is used for transmitting a protocol packet, configuration information, table entry information, and the like between the two DR member devices, and the IPL corresponds to a unique IPL identifier.

When the IPL between the two DR member devices fails, both the two DR member devices may operate independently, and thus, for the intermediate forwarding device, it is considered that both the DR member devices operate normally, which may cause an STP (Spanning tree protocol) calculation abnormality and may cause a loop.

Disclosure of Invention

The application provides a message transmission method, which is applied to distributed aggregated DR member equipment and comprises the following steps:

receiving a first message sent by other DR member devices, wherein the first message is sent by an intermediate forwarding device connected with the other DR member devices when the other DR member devices detect that an internal entrance link IPL between the other DR member devices and the DR member devices fails; judging whether the first message carries the identifier of the equipment or not; if yes, the port of the equipment is placed in a working state or a working stopping state according to the first message.

The application provides a message transmission method, which is applied to intermediate forwarding equipment and comprises the following steps:

receiving a message sent by distributed aggregation DR member equipment connected with the equipment; the message is sent when the DR member equipment detects that an internal entrance link IPL between the DR member equipment and other DR member equipment fails, and the message carries the identification of the other DR member equipment;

and sending the message to other DR member equipment, so that when the other DR member equipment determines that the message carries the identifier of the other DR member equipment, the ports of the other DR member equipment are placed in a working state or a working stopping state according to the message.

The application provides a message transmission device, is applied to distributed aggregation DR member equipment, includes:

a receiving module, configured to receive a first packet sent by another DR member device, where the first packet is sent by an intermediate forwarding device connected to the other DR member device when the other DR member device detects that an internal ingress link IPL between the other DR member device and the DR member device fails; the judging module is used for judging whether the first message carries the identifier of the equipment or not; and the processing module is used for placing the port of the equipment in a working state or a working stopping state according to the first message when the judgment result is yes.

The application provides a message transmission device, is applied to middle forwarding equipment, includes:

the receiving module is used for receiving a message sent by distributed aggregation DR member equipment connected with the receiving module; the message is sent when the DR member equipment detects that an internal entrance link IPL between the DR member equipment and other DR member equipment fails, and the message carries the identification of the other DR member equipment;

and the sending module is used for sending the message to the other DR member equipment so as to enable the other DR member equipment to place the port of the other DR member equipment in a working state or a working stop state according to the message when the other DR member equipment determines that the message carries the identifier of the other DR member equipment.

Based on the above technical solution, in this embodiment of the application, when the IPL between two DR member devices fails, only one DR member device may place the port of the device in a working state, and the other DR member device may place the port of the device in a stop working state, so that, for the intermediate forwarding device, only one DR member device is considered to be working normally, thereby avoiding the abnormality of STP calculation, avoiding the loop problem, and ensuring the normal use of network functions.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a networking schematic of a distributed aggregation;

fig. 2 is a flowchart of a message transmission method according to an embodiment of the present application;

fig. 3 is a flowchart of a message transmission method according to another embodiment of the present application;

FIG. 4 is a schematic diagram of an application scenario in an embodiment of the present application;

FIG. 5 is a hardware block diagram of a DR member device in one embodiment of the present application;

fig. 6 is a block diagram of a message transmission apparatus according to an embodiment of the present application;

FIG. 7 is a hardware block diagram of an intermediate forwarding device in one embodiment of the present application;

fig. 8 is a block diagram of a message transmission device according to an embodiment of the present application.

Detailed Description

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein is meant to encompass any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Depending on the context, moreover, the word "if" may be used is interpreted as "at … …," or "at … …," or "in response to a determination.

The embodiment of the application provides a message transmission method, which can be applied to a network comprising at least two DR systems, and each DR system can comprise at least two DR member devices. In addition, the network may further include an intermediate forwarding device, where the intermediate forwarding device is a network device connected to the DR member devices, the intermediate forwarding device may forward a packet sent by one DR member device to another DR member device, and the number of the intermediate forwarding devices may be one or more than one. Also, the intermediate forwarding device may or may not be a DR member device of another DR system.

Referring to fig. 1, ports 1 and 2 of network device 1, and ports 3 and 4 of network device 2 may be bundled together to achieve port aggregation across network devices, and thus, network device 1 and network device 2 may be DR member devices. Assuming that a network device X is connected to the network device 1 and the network device 2 respectively (not shown in fig. 1), the network device X is an intermediate forwarding device between the network device 1 and the network device 2, and the network device X is not a device of the DR system. Assuming that network device 3 and network device 4 are connected to network device 1 and network device 2, respectively (as shown in fig. 1), network device 3 and network device 4 are intermediate forwarding devices between network device 1 and network device 2, and further, network device 3 and network device 4 are DR member devices of another DR system.

In one example, one DR port group 1 may be included for DR member devices, and DR member ports within DR port group 1 include port 1, port 2, port 3 and port 4. Likewise, for the intermediate forwarding device, the DR port group 1 may also be included, and the DR member ports in the DR port group 1 include port 5, port 6, port 7 and port 8. Also, an IPL is included between the two DR member devices.

Referring to fig. 2, a flowchart of a message transmission method provided in this embodiment is shown, where the method may be applied to a DR member device, and the method may include the following steps:

step 201, receiving a first message sent by other DR member devices, where the first message is sent by an intermediate forwarding device connected to the other DR member devices when the other DR member devices detect that an IPL between the other DR member devices and the DR member device fails.

Step 202, determining whether the first packet carries the identifier of the DR member device.

If yes, go to step 203, if no, discard the first message.

Step 203, according to the first message, the port of the DR member device is placed in a working state (i.e., the port is in an UP state) or in a stop working state (i.e., the port is in a DOWN state).

In one example, the process of "putting the port of the DR member device in the working state or in the non-working state according to the first message" may include: analyzing the priority of the other DR member equipment from the first message, and comparing the priority of the DR member equipment with the priority of the other DR member equipment; and according to the comparison result of the priorities, putting the port of the DR member device in a working state or a stop working state.

Aiming at the process of putting the port of the DR member equipment in a working state or in a working stop state according to the comparison result of the priority, if the priority of the DR member equipment is higher than the priorities of other DR member equipment, putting the port of the DR member equipment in the working state; and if the priority of the DR member equipment is lower than the priorities of the other DR member equipment, the port of the DR member equipment is placed in a work stop state. Or if the priority of the DR member equipment is lower than the priorities of the other DR member equipment, the port of the DR member equipment is placed in a working state; and if the priority of the DR member equipment is higher than the priorities of the other DR member equipment, the port of the DR member equipment is placed in a work stop state.

In an example, when detecting that an IPL between the DR member device and another DR member device fails, the method sends a second message to an intermediate forwarding device connected to the DR member device, where the second message may carry an identifier (such as a Media Access Control (MAC) address, etc.) of the another DR member device, a priority of the DR member device, and so on, so that the intermediate forwarding device sends the second message to the another DR member device, and the another DR member device places a port of the another DR member device in a working state or a stop working state according to the second message.

In order to simplify the description, in the subsequent process, the process of sending the second message by the DR member device is taken as an example for explanation, and the process of sending the first message by other DR member devices is not repeated.

In one example, an IPL may exist between two DR member devices, where the IPL is used to transmit contents such as a protocol packet, configuration information, and entry information, and the IPL corresponds to an IPL identifier, and if a DR member device detects an IPL port DOWN (abnormal) or communication abnormality, it is considered that the IPL has a failure. In addition, a keep-alive (keepalive) link may also exist between the two DR member devices, if a keep-alive link exists, each DR member device may periodically send a keepalive message through the keep-alive link, and if the keepalive message from the DR member device of the opposite end is not received within a specified time, the keep-alive link is considered to be faulty.

Based on this, when there is a keep-alive link between the present DR member device and other DR member devices, then: and when the IPL between the DR member equipment and other DR member equipment fails and the keep-alive link between the DR member equipment and other DR member equipment fails, sending a second message to the intermediate forwarding equipment connected with the DR member equipment. Or, when the IPL between the DR member device and the other DR member device fails, the second packet is sent to the intermediate forwarding device connected to the DR member device regardless of whether the keep-alive link between the DR member device and the other DR member device fails.

In an example, the process of "sending the second packet to the intermediate forwarding device connected to the DR member device" may include, but is not limited to, the following manners: inquiring a first association table maintained in advance through an IPL identifier corresponding to the IPL to obtain identifiers of other DR member devices and a DR port group corresponding to the IPL identifier; the first association table comprises corresponding relations among IPL identifications, identifications of other DR member devices and DR port groups. Further, a second packet including the identifier of the other DR member device and the priority of the DR member device is generated, and the second packet is sent to the intermediate forwarding device connected to the DR member device through the DR member port in the DR port group (i.e., the DR port group corresponding to the IPL identifier).

In one example, the process for "sending the second packet to the intermediate forwarding device connected to the DR member device through the DR member port in the DR port group" may include, but is not limited to:

if the DR port group corresponding to the IPL identifier is one, M DR member ports may be selected from all normal DR member ports in the DR port group, and the second packet may be sent to the intermediate forwarding device through the selected M DR member ports, where M is a positive integer greater than or equal to 1.

If the number of the DR port groups corresponding to the IPL identifier is at least two, selecting a designated DR port group from the at least two DR port groups, selecting N DR member ports from all normal DR member ports in the designated DR port group, and sending the second message to the intermediate forwarding equipment through the selected N DR member ports, wherein N is a positive integer greater than or equal to 1; the selection policy of the designated DR port group may include: and preferentially selecting the DR member ports which are all normal DR port groups.

In order to reduce the number of message transmissions, if the DR port group corresponding to the IPL identifier is one, the second message is transmitted only through the selected M DR member ports, instead of transmitting the second message from all normal DR member ports in the DR port group, thereby reducing the number of message transmissions. If the number of the DR port groups corresponding to the IPL identifier is at least two, the second message is sent only through the selected N DR member ports, and the second message is not sent from all normal DR member ports of the at least two DR port groups, so that the message sending number is reduced.

In the process of selecting the designated DR port group from the at least two DR port groups, it is assumed that the DR port group 1 includes a port a and a port B, and the DR port group 2 includes a port C and a port D, and if the port a is abnormal and the port B, the port C and the port D are normal, DR member ports of the DR port group 2 are all normal, and the DR port group 1 has an abnormal port, so the DR port group 2 is selected as the designated DR port group.

In one example, when the second packet is sent to the intermediate forwarding device through the selected M/N DR member ports, in order to avoid that the second packet cannot be transmitted to other DR member devices, K DR member ports may be selected from the remaining DR member ports, and the second packet may be sent to the intermediate forwarding device through the selected K DR member ports. Therefore, in each sending period, the second message can be sent to the intermediate forwarding device through the selected M/N DR member ports and the K DR member ports.

Aiming at the process of selecting K DR member ports from the selected residual DR member ports, the K DR member ports can be randomly selected from the selected residual DR member ports, and the selected residual DR member ports can be sequenced to form a sending queue. In the first sending period, the first DR member port to the Kth DR member port of the sending queue are selected, in the second sending period, the Kth +1 DR member port to the 2 Kth DR member port are selected, and the like. In addition, after the last DR member port of the sending queue is selected, the selection is restarted from the first DR member port of the sending queue.

For example, assuming that M/N selected DR member ports are port a, and the remaining DR member ports are port B and port C, and the value of K is 1, in a first sending period, a second packet is sent to the intermediate forwarding device through port a and port B, in a second sending period, a second packet is sent to the intermediate forwarding device through port a and port C, in a third sending period, a second packet is sent to the intermediate forwarding device through port a and port B, and so on. Of course, the above processes are only examples of sending the second packet to the intermediate forwarding device, and in practical applications, other manners may be adopted as long as the second packet can be sent to the intermediate forwarding device, which is not limited to this.

In an example, the second packet may carry, in addition to the identifier of the other DR member device and the priority of the DR member device, one or any combination of the following: an IPL identifier (an IPL identifier of an IPL between the DR member device and another DR member device), an identifier (such as an MAC address) of the DR member device, a hop count (1 is added for each device, and when the hop count reaches a preset threshold, the second message is not transmitted), and a flag bit (indicating whether the second message passes through the IPL between the intermediate forwarding devices). Furthermore, the second message may include an identification list, and the identifications of the other DR member devices are located in the identification list. And when the IPR between the DR member device and at least two other DR member devices fails, the identifications of the at least two other DR member devices are all located in the identification list.

In an example, after receiving a first message sent by another DR member device, if the identifier of the DR member device is carried in the identifier list of the first message, the DR member device may delete the identifier of the DR member device from the identifier list of the first message. And if the identification list does not comprise any identification of the DR member equipment, the DR member equipment does not forward the first message. If the identifier list further includes an identifier of another DR member device (e.g., one or at least two DR member devices), the DR member device may further forward the modified first packet (i.e., the first packet from which the identifier of the DR member device is deleted) to the another DR member device through an IPL between the DR member device and the another DR member device.

Referring to fig. 3, a flowchart of a message transmission method provided in this embodiment is shown, where the method may be applied to an intermediate forwarding device, and the method may include the following steps:

step 301, receiving a message sent by a DR member device connected to the intermediate forwarding device; the message is sent when the DR member device detects that an IPL between the DR member device and other DR member devices fails, and the message carries the identification of the other DR member devices.

Step 302, sending the message to the other DR member devices, so that when the other DR member devices determine that the message carries the identifier of the other DR member devices, the ports of the other DR member devices are placed in a working state or a working stop state according to the message.

In one example, the message may be the first message or the second message in the above embodiments.

In one example, the process for "sending the message to the other DR member device" may include, but is not limited to, the following: the first method is to determine the DR port group to which the DR member port receiving the message belongs, query a pre-maintained second association table through the DR port group and the identification of the other DR member device (the identification is carried in the message), obtain the corresponding DR member port, and send the message to the other DR member device through the obtained DR member port. And secondly, determining the DR member port group to which the DR member port receiving the message belongs, and sending the message through other DR member ports except the DR member port in the DR port group so as to send the message to other DR member devices.

When the intermediate forwarding device maintains the second association table, the intermediate forwarding device sends the message to the other DR member devices in the first mode or the second mode. And when the intermediate forwarding equipment does not maintain the second association table, the intermediate forwarding equipment adopts a mode two to send the message to other DR member equipment.

In one example, the second association table may include at least a correspondence between the DR port group, the identification of the DR member device, and the DR member ports. Based on this, after querying the second association table through the identities of the DR port group and the other DR member devices, the intermediate forwarding device may obtain DR member ports corresponding to the identities of the DR port group and the other DR member devices.

In another example, if an IPL still exists between the intermediate forwarding device and another intermediate forwarding device, the process of sending the packet to the other DR member device may further include the following steps: adding the DR port group in the message, and sending the modified message to the other intermediate forwarding device through the IPL; so that the other intermediate forwarding device queries the second association table through the DR port group and the identification of the other DR member device to obtain a corresponding DR member port, and sends the message to the other DR member device through the DR member port; or sending a message through each DR member port in the DR port group so as to send the message to the other DR member devices.

The following describes the above technical solution of the embodiment of the present application with reference to the application scenario shown in fig. 4.

As shown in fig. 4, network device 1 and network device 2 are DR member devices, network device 3 and network device 4 are intermediate forwarding devices between network device 1 and network device 2, and network device 5 is an intermediate forwarding device between network device 1 and network device 2. Also, the network device 3 and the network device 4 are DR member devices of another DR system, and in this case, the network device 1 and the network device 2 are also intermediate forwarding devices between the network device 3 and the network device 4. The network device 5 is not a device of the DR system. For convenience of description, in the following process, the network device 1 and the network device 2 are taken as DR member devices, and the network device 3, the network device 4, and the network device 5 are taken as intermediate forwarding devices for example.

For the DR member device, a DR member port group 1 and a DR member port group 2 are included, the DR member ports in the DR member port group 1 include a port 1, a port 2, a port 3 and a port 4, and the DR member ports in the DR member port group 2 include a port 9 and a port 10. The intermediate forwarding device composed of the network device 3 and the network device 4 includes a DR port group 1, and DR member ports in the DR port group 1 include a port 5, a port 6, a port 7 and a port 8. This intermediate forwarding device includes a DR port group 2 for network device 5, and DR member ports within the DR port group 2 include port 11 and port 12. In this application scenario, it is assumed that an IPL identifier corresponding to an IPL between the network device 1 and the network device 2 is an IPL identifier 1, and in addition, an IPL identifier corresponding to an IPL between the network device 3 and the network device 4 is an IPL identifier 2.

In one example, the first association table maintained by network device 1 may be shown in table 1, the first association table maintained by network device 2 may be shown in table 2, the second association table maintained by network device 3 may be shown in table 3, the second association table maintained by network device 4 may be shown in table 4, and the second association table maintained by network device 5 may be shown in table 5. Of course, the above is only an example of the first association table and the second association table, and is not limited to this in practical applications, and the structures of the first association table and the second association table are not described again.

TABLE 1

IPL identification	DR port group	Identification of DR member devices
			IPL identification 1	DR Port group 1	MAC address of network device 2
IPL identification 1	DR Port group 2	MAC address of network device 2

TABLE 2

IPL identification	DR port group	Identification of DR member devices
			IPL identification 1	DR Port group 1	MAC address of network device 1
IPL identification 1	DR Port group 2	MAC address of network device 1

TABLE 3

IPL identification	DR port group	DR member port	Identification of DR member devices
				IPL identification 2	DR Port group 1	Port 5	MAC address of network device 1
IPL identification 2	DR Port group 1	Port 6	MAC address of network device 2

TABLE 4

IPL identification	DR port group	DR member port	Identification of DR member devices
				IPL identification 2	DR Port group 1	Port 7	MAC address of network device 1
IPL identification 2	DR Port group 1	Port 8	MAC address of network device 2

TABLE 5

DR port group	DR member port	Identification of DR member devices
			DR Port group 2	Port 11	MAC address of network device 1
DR Port group 2	Port 12	MAC address of network device 2

In the application scenario, the message transmission method provided in the embodiment of the present application may include the following steps:

step 1, when detecting that the IPL of the network device 2 and the local device fails, the network device 1 sends a message to the intermediate forwarding device, where the message carries the MAC address of the network device 2 and the priority of the network device 1.

As shown in fig. 4, because the keep-alive link exists between the network device 1 and the network device 2, when the IPL between the network device 1 and the network device 2 fails and the keep-alive link between the network device 1 and the network device 2 fails, the network device 1 may send a packet to the intermediate forwarding device. Alternatively, when the IPL between the network device 1 and the network device 2 fails, but the keep-alive link between the network device 1 and the network device 2 does not fail, the network device 1 may also send a packet to the intermediate forwarding device.

The network device 1 may query the first association table shown in table 1 through the IPL identifier 1 corresponding to the IPL to obtain the MAC address of the network device 2, the DR port group 1, and the DR port group 2. Then, the network device 1 may generate a packet including the MAC address of the network device 2 and the priority of the device, and send the packet to the intermediate forwarding device through the DR member ports in the DR port group 1 and/or the DR member ports in the DR port group 2.

In an example, in response to a process that the network device 1 sends the message to the intermediate forwarding device through the DR member ports in the DR port group 1 and/or the DR port group 2, the network device 1 may select a designated DR port group (for example, the DR port group 1 and/or the DR port group 2, the specific selection policy is not repeated) from the DR port group 1 and the DR port group 2, select N DR member ports from the DR member ports in the designated DR port group, and send the message to the intermediate forwarding device through the selected N DR member ports.

For example, the network device 1 selects the designated DR port group as the DR port group 1, selects the port 1 from DR member ports of the DR port group 1, and sends a message to the network device 3 through the port 1. Or, the network device 1 selects the designated DR port group as the DR port group 2, selects the port 9 from the DR member ports of the DR port group 2, and sends the packet to the network device 5 through the port 9. Or, the network device 1 may determine both the DR port group 1 and the DR port group 2 as the designated DR port group, select the port 1 and the port 2 from DR member ports of the DR port group 1, and select the port 9 from DR member ports of the DR port group 2, so that the network device 1 sends a message to the network device 3 through the port 1, sends a message to the network device 4 through the port 2, and sends a message to the network device 5 through the port 9, thereby improving reliability of message transmission to the network device 2. For convenience of description, the port 1 is taken as an example for illustration.

In an example, the packet may carry one or any combination of the following contents, in addition to the MAC address of the network device 2 and the priority of the network device 1: IPL identifier 1, MAC address of network device 1, hop number passed by message, mark bit, etc. Moreover, the message may further include an identification list, and the MAC address of the network device 2 may be carried in the identification list.

And 2, receiving the message sent by the network equipment 1 by the intermediate forwarding equipment (such as the network equipment 3).

And 3, the intermediate forwarding equipment (such as the network equipment 3) sends the message to the network equipment 2.

After receiving the message, the network device 3 first checks whether the hop count of the message reaches a preset threshold, and if the hop count of the message reaches the preset threshold, the network device discards the message and does not transmit the message any more, thereby avoiding the problem of a loop. And if the preset threshold value is not reached, checking whether the identification list of the message is empty or not. If the message is empty, the message is discarded and is not transmitted any more. If not, checking whether a second association table corresponding to the message exists locally, and if so, sending the message to the network device 2 by the network device 3 in the first mode. If not, the network device 3 sends the message to the network device 2 in the second mode.

In the first mode, the network device 3 determines a DR port group to which a DR member port (i.e., port 5) receiving the packet belongs, where the DR port group is a DR port group 1. The network device 3 queries the second association table shown in table 3 through the DR port group 1 and the MAC address (carried in the message) of the network device 2, obtains a corresponding DR member port as a port 6, and sends the message to the network device 2 through the port 6.

In one example, the network device 3 may also send the message to the network device 4 through an IPL between the network device 3 and the network device 4. Before sending the message, the network device 3 may set the flag bit of the message to the IPL identifier 2 corresponding to the IPL, and add transparent transmission information in the message, where the transparent transmission information may include the IPL identifier 2 and the DR port group 1 (i.e., the DR port group to which the port 5 receiving the message belongs).

After receiving the message, the network device 4 finds that the flag bit is the IPL identifier 2, which indicates that the message is from the IPL corresponding to the IPL identifier 2, and therefore, the network device 4 does not send the message to the network device 3 through the IPL. Moreover, the network device 4 may query the second association table shown in table 4 through the transparent transmission information (i.e., the IPL identifier 2 and the DR port group 1) and the MAC address (carried in the message) of the network device 2 to obtain a corresponding DR member port as the port 8, and send the message to the network device 2 through the port 8.

In the second mode, the network device 3 determines the DR port group to which the DR member port (i.e., port 5) receiving the packet belongs, where the DR port group is the DR port group 1, and sends the packet through another DR member port (i.e., port 6) other than the port 5 in the DR port group 1, so as to send the packet to the network device 2.

After receiving the message, the network device 4 finds that the flag bit is the IPL identifier 2, which indicates that the message is from the IPL corresponding to the IPL identifier 2, and therefore, the network device 4 does not send the message to the network device 3 through the IPL. Moreover, the network device 4 may determine the DR port group 1 by the transparent transmission information (i.e., the IPL identifier 2 and the DR port group 1), and send the message through all ports (e.g., the port 7 and the port 8) in the DR port group 1, where the message is sent to the network device 1 and the network device 2, respectively. After receiving the message, the network device 1 discards the message because the identifier list does not include the MAC address of the network device 1.

And 4, after receiving the message, the network device 2 judges whether the message carries the MAC address of the network device 2, if not, the message is discarded, and if so, the step 5 is executed.

And 5, the network equipment 2 compares the priority of the equipment with the priority of the network equipment 1 carried by the message, and sets the port of the network equipment 2 in a working state or a working stopping state according to the comparison result of the priorities. In an example, if the priority of the network device 2 is higher than the priority of the network device 1, the port of the network device 2 is placed in a working state (the port is in an UP state); if the priority of the network device 2 is lower than the priority of the network device 1, the port of the network device 2 is set to a stop state (the port is in a DOWN state), that is, the deactivation process is performed.

In an example, the MAC address of the network device 2 is carried in an identifier list of the message, and after the network device 2 receives the message, the MAC address of the network device 2 may be deleted from the identifier list. Since the identification list no longer includes the identifications of other network devices, the message is no longer forwarded.

The above process is a process in which the network device 1 sends a message to the network device 2, and the network device 2 may also send a message to the network device 1, and the processing flow is similar to the above steps 1 to 5, and is not described herein again. The messages can be called multi-activity detection messages, and the information carried by the messages can be called multi-activity detection information.

In one example, assume that the priority of network device 1 is 100, the priority of network device 2 is 50, and the higher the priority value, the higher the priority. Based on this, after comparing the priority of the network device 1 with the priority of the network device 2, the network device 1 finds that the priority of the network device 1 is higher than the priority of the network device 2, and therefore, the network device 1 puts the port of the device into an operating state, that is, the network device 1 continues to operate. After comparing the priority of the network device 2 with the priority of the network device 1, the network device 2 finds that the priority of the network device 2 is lower than the priority of the network device 1, and therefore, the network device 2 puts the port of the device in a stop state, that is, the network device 2 stops working. In the above manner, only one network device 1 works normally, and the network device 2 stops working, so that both network devices are prevented from working.

Based on the above technical solution, in this embodiment of the application, when an IPL between two DR member devices fails, each DR member device may compare the priority of the device with the priority of another DR member device, and if the priority of the device is higher than the priority of another DR member device, the device continues to operate, and if the priority of the device is lower than the priority of another DR member device, the device stops operating. Therefore, only one DR member device works in the two DR member devices, the other DR member device stops working, and for the intermediate forwarding device, only one DR member device is considered to work normally, so that the exception of STP calculation is avoided, the problem of loop is avoided, and the normal use of network functions is ensured.

Based on the same application concept as the method, the embodiment of the application also provides a message transmission device, and the message transmission device is applied to the DR member equipment. The message transmission device can be realized by software, or by hardware or a combination of the software and the hardware. Taking a software implementation as an example, the apparatus in a logical sense is formed by reading corresponding computer program instructions in the non-volatile memory through the processor of the DR member device in which it is located. From a hardware aspect, as shown in fig. 5, for a hardware structure diagram of a DR member device where the message transmission apparatus provided by the present application is located, in addition to the processor and the nonvolatile memory shown in fig. 5, the DR member device may further include other hardware, such as a forwarding chip, a network interface, and a memory, which are responsible for processing a message; in terms of hardware structure, the DR member device may also be a distributed device, and may include a plurality of interface cards to perform message processing extension at a hardware level.

As shown in fig. 6, a structure diagram of a message transmission device provided in the present application is shown, where the device includes:

a receiving module 11, configured to receive a first packet sent by another DR member device, where the first packet is sent by an intermediate forwarding device connected to the another DR member device when the another DR member device detects that an IPL between the another DR member device and the DR member device fails;

a judging module 12, configured to judge whether the first packet carries an identifier of the device;

and the processing module 13 is configured to, if the determination result is yes, place the port of the device in a working state or a stop working state according to the first packet.

In an example, the processing module 13 is specifically configured to, in a process of placing a port of the device in a working state or in a stop working state according to the first packet, analyze the priority of the other DR member devices from the first packet, and compare the priority of the device with the priority of the other DR member devices; and according to the comparison result of the priorities, putting the port of the equipment into a working state or a stop working state.

In one example, the message transmission apparatus further includes (not shown in the figure):

a sending module, configured to send a second packet to an intermediate forwarding device connected to the device when detecting that an IPL between the device and another DR member device fails, where the second packet carries an identifier of the other DR member device and a priority of the device; and enabling the intermediate forwarding device to send the second message to the other DR member devices, and enabling the other DR member devices to set the ports of the other DR member devices in a working state or a working stopping state according to the second message.

The sending module is specifically configured to, in a process of sending a second message to an intermediate forwarding device connected to the sending module, query a first association table maintained in advance through an IPL identifier corresponding to the IPL to obtain an identifier of another DR member device and a DR port group corresponding to the IPL identifier; the first association table comprises corresponding relations among IPL identifications, identifications of other DR member devices and DR port groups;

generating a second message comprising the identification of the other DR member equipment and the priority of the equipment;

and sending the second message to intermediate forwarding equipment through the DR member port in the DR port group.

The sending module is specifically configured to, in a process of sending the second message to the intermediate forwarding device through the DR member port in the DR port group, select M DR member ports from all normal DR member ports in the DR port group if the DR member port group corresponding to the IPL identifier is one, and send the second message to the intermediate forwarding device through the selected M DR member ports, where M is a positive integer greater than or equal to 1; or if at least two DR port groups corresponding to the IPL identifier are selected, selecting a designated DR port group from the at least two DR port groups, selecting N DR member ports from all normal DR member ports in the designated DR port group, and sending the second message to the intermediate forwarding device through the selected N DR member ports, where N is a positive integer greater than or equal to 1; the selection strategy for the designated DR port group comprises the following steps: and preferentially selecting the DR member ports which are all normal DR port groups.

Based on the same application concept as the method, the embodiment of the present application further provides a message transmission apparatus, which is applied to the intermediate forwarding device. The message transmission device can be realized by software, or by hardware or a combination of the software and the hardware. A logical means, for example implemented in software, is formed by reading, by the processor of the intermediate forwarding device in which it is located, the corresponding computer program instructions in the non-volatile memory. In terms of hardware, as shown in fig. 7, for a hardware structure diagram of an intermediate forwarding device where the message transmission apparatus provided by the present application is located, in addition to the processor and the nonvolatile memory shown in fig. 7, the intermediate forwarding device may further include other hardware, such as a forwarding chip, a network interface, and a memory, which are responsible for processing a message; in terms of hardware structure, the intermediate forwarding device may also be a distributed device, and may include multiple interface cards to perform packet processing extension at the hardware level.

As shown in fig. 8, a structure diagram of a message transmission device provided in the present application is shown, where the device includes:

a receiving module 21, configured to receive a message sent by a distributed aggregation DR member device connected to a local device; the message is sent when the DR member equipment detects that an IPL between the DR member equipment and other DR member equipment fails, and the message carries the identification of the other DR member equipment;

a sending module 22, configured to send the packet to the other DR member devices, so that when determining that the packet carries the identifier of the other DR member devices, the other DR member devices place the ports of the other DR member devices in a working state or a working stop state according to the packet.

In an example, the sending module 22 is specifically configured to determine, in a process of sending the packet to the other DR member devices, a DR port group to which a DR member port that receives the packet belongs; inquiring a second association table maintained in advance through the DR port group and the identification of other DR member equipment to obtain a corresponding DR member port; the second association table comprises a DR port group, the identification of DR member equipment and the corresponding relation among DR member ports; sending the message to other DR member equipment through the obtained DR member port; or, determining a DR port group to which a DR member port receiving the message belongs; and sending the message through other DR member ports except the DR member port in the DR port group so as to send the message to other DR member equipment.

In one example, if an IPL still exists between the intermediate forwarding device and another intermediate forwarding device; the sending module 22 is further configured to add the DR port group to the packet and send the modified packet to the other intermediate forwarding device through the IPL in the process of sending the packet to the other DR member devices; and the other intermediate forwarding device queries a second association table through the DR port group and the identifiers of the other DR member devices to obtain a corresponding DR member port, and sends a message to the other DR member devices through the DR member port, or sends a message through each DR member port in the DR port group to send the message to the other DR member devices.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.

For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Furthermore, these computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (which may include, but is not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A message transmission method is applied to distributed aggregation DR member equipment, and is characterized by comprising the following steps:

receiving a first message sent by other DR member devices, wherein the first message is sent by an intermediate forwarding device connected with the other DR member devices when the other DR member devices detect that an internal entrance link IPL between the other DR member devices and the DR member devices fails;

judging whether the first message carries the identifier of the equipment or not;

if so, the port of the equipment is placed in a working state or a working stopping state according to the first message;

the method also comprises the step of deleting the identifier of the equipment from the identifier list of the first message; and if the identification list also comprises the identification of another DR member device, forwarding the modified first message to the another DR member device through an IPL between the device and the another DR member device.

2. The method according to claim 1, wherein the process of placing the port of the device in a working state or a stop working state according to the first packet specifically includes:

analyzing the priority of the other DR member equipment from the first message, and comparing the priority of the equipment with the priority of the other DR member equipment; and according to the comparison result of the priorities, putting the port of the equipment into a working state or a stop working state.

3. The method of claim 1, further comprising:

when detecting that an IPL between the equipment and other DR member equipment has a fault, sending a second message to intermediate forwarding equipment connected with the equipment, wherein the second message carries the identification of the other DR member equipment and the priority of the equipment; and enabling the intermediate forwarding device to send the second message to the other DR member devices, and enabling the other DR member devices to set the ports of the other DR member devices in a working state or a working stopping state according to the second message.

4. The method of claim 3,

the process of sending the second packet to the intermediate forwarding device connected to the device specifically includes:

inquiring a first association table maintained in advance through the IPL identifier corresponding to the IPL to obtain the identifier of other DR member equipment and a DR port group corresponding to the IPL identifier; the first association table comprises corresponding relations among IPL identifications, identifications of other DR member devices and DR port groups;

5. The method of claim 4, wherein the sending the second packet to the intermediate forwarding device through the DR member port in the DR port group specifically includes:

if the DR port group corresponding to the IPL identifier is one, M DR member ports are selected from all normal DR member ports in the DR port group, and the second message is sent to intermediate forwarding equipment through the selected M DR member ports, wherein M is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,

if the number of the DR port groups corresponding to the IPL identifier is at least two, selecting a designated DR port group from the at least two DR port groups, selecting N DR member ports from all normal DR member ports in the designated DR port group, and sending the second message to intermediate forwarding equipment through the selected N DR member ports, wherein N is a positive integer greater than or equal to 1; the selection strategy for the designated DR port group comprises the following steps: and preferentially selecting the DR member ports which are all normal DR port groups.

6. A message transmission method is applied to intermediate forwarding equipment and is characterized by comprising the following steps:

sending the message to the other DR member devices, so that the other DR member devices place the ports of the other DR member devices in a working state or a working stop state according to the message when determining that the message carries the identifiers of the other DR member devices, delete the identifiers of the device from an identifier list of the message, and forward the modified message to the other DR member devices through an IPL between the device and the other DR member devices if the identifier list further comprises identifiers of the other DR member devices.

7. The method of claim 6,

the process of sending the message to the other DR member devices specifically includes:

determining a DR port group to which a DR member port receiving the message belongs; inquiring a second association table maintained in advance through the DR port group and the identification of other DR member equipment to obtain a corresponding DR member port; the second association table comprises a DR port group, the identification of DR member equipment and the corresponding relation among DR member ports; sending the message to other DR member equipment through the obtained DR member port; alternatively, the first and second electrodes may be,

determining a DR port group to which a DR member port receiving the message belongs; and sending the message through other DR member ports except the DR member port in the DR port group so as to send the message to other DR member equipment.

8. The method of claim 7,

if an IPL still exists between the intermediate forwarding equipment and another intermediate forwarding equipment;

the process of sending the message to the other DR member devices further includes:

adding the DR port group in the message, and sending the modified message to the other intermediate forwarding device through the IPL; and the other intermediate forwarding device queries a second association table through the DR port group and the identifiers of the other DR member devices to obtain a corresponding DR member port, and sends a message to the other DR member devices through the DR member port, or sends a message through each DR member port in the DR port group to send the message to the other DR member devices.

9. A message transmission device is applied to distributed aggregation DR member equipment, and is characterized by comprising:

a receiving module, configured to receive a first packet sent by another DR member device, where the first packet is sent by an intermediate forwarding device connected to the other DR member device when the other DR member device detects that an internal ingress link IPL between the other DR member device and the DR member device fails;

the judging module is used for judging whether the first message carries the identifier of the equipment or not;

the processing module is used for placing the port of the equipment in a working state or a working stopping state according to the first message when the judgment result is yes; deleting the identifier of the equipment from the identifier list of the first message; and if the identification list also comprises the identification of another DR member device, forwarding the modified first message to the another DR member device through an IPL between the device and the another DR member device.

10. The apparatus according to claim 9, wherein the processing module is specifically configured to, in a process of placing a port of the device in an operating state or in a shutdown state according to the first packet, parse the priorities of the other DR member devices from the first packet, and compare the priority of the device with the priorities of the other DR member devices; and according to the comparison result of the priorities, putting the port of the equipment into a working state or a stop working state.

11. The apparatus of claim 9, further comprising:

12. The apparatus of claim 11,

13. The apparatus of claim 12, wherein the sending module is specifically configured to, in a process of sending the second packet to the intermediate forwarding device through the DR member ports in the DR port group, select M DR member ports from all normal DR member ports in the DR port group if the IPL identifies that a corresponding DR port group is one, and send the second packet to the intermediate forwarding device through the selected M DR member ports, where M is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,

14. A message transmission device is applied to intermediate forwarding equipment, and is characterized by comprising:

a sending module, configured to send the packet to the other DR member devices, so that when determining that the packet carries the identifiers of the other DR member devices, the other DR member devices place the ports of the other DR member devices in a working state or a work stop state according to the packet, and delete the identifier of the device from the identifier list of the packet, and if the identifier list further includes an identifier of another DR member device, forward the modified packet to the another DR member device through an IPL between the device and the another DR member device.

15. The apparatus of claim 14,

the sending module is specifically configured to determine a DR port group to which a DR member port that receives the packet belongs in a process of sending the packet to the other DR member devices; inquiring a second association table maintained in advance through the DR port group and the identification of other DR member equipment to obtain a corresponding DR member port; the second association table comprises a DR port group, the identification of DR member equipment and the corresponding relation among DR member ports; sending the message to other DR member equipment through the obtained DR member port; or, determining a DR port group to which a DR member port receiving the message belongs; and sending the message through other DR member ports except the DR member port in the DR port group so as to send the message to other DR member equipment.

16. The apparatus of claim 15,

the sending module is further configured to add the DR port group to the packet and send the modified packet to the other intermediate forwarding device through the IPL in the process of sending the packet to the other DR member devices; and the other intermediate forwarding device queries a second association table through the DR port group and the identifiers of the other DR member devices to obtain a corresponding DR member port, and sends a message to the other DR member devices through the DR member port, or sends a message through each DR member port in the DR port group to send the message to the other DR member devices.