CN103795563B - A kind of control method and device of DCN passages - Google Patents

Abstract

The invention discloses a DCN channel control method and device, which are used to solve the problem that in the prior art, when the main gateway fails, the PTN network element in the DCN domain where it is located takes a long time to be out of control, and the recovery management speed is slow The problem. In this method, the standby gateway detects the active gateways in each connected DCN domain, and when at least one active gateway is detected to be faulty, it opens its own DCN channel to the DCN domain where the failed active gateway is located, and closes itself The DCN channel to the DCN domain where the active gateway that is not faulty resides. In the above method, the standby gateway detects each active gateway, and controls the opening or closing of each DCN channel according to the detection result, without manually locating the detached PTN network element, and without manually restoring the management of the detached PTN network element. Therefore, the detachment time of the detachable PTN network element is effectively shortened, and the recovery and management speed of the detachable PTN network element is improved.

Description

A control method and device for a DCN channel

technical field

The present invention relates to the communication field, in particular to a DCN channel control method and device.

Background technique

Currently, in a packet transport network (Packet Transport Network, PTN), the network elements of the PTN at the access layer are generally managed by a network management server at the aggregation layer, as shown in FIG. 1 .

FIG. 1 is a schematic diagram of a PTN network structure in the prior art. In FIG. 1, there are 10 PTN network elements, namely PTN network elements 1-10, and these 10 network elements are located at the access layer of the PTN network. The network management server is located at the aggregation layer of the PTN network. The active gateway 1, the active gateway 2, and the standby gateway are located at the junction of the access layer and the aggregation layer, and are used to forward data communication network (Data Communication Network, DCN) messages for the network management server and each PTN network element.

In Figure 1, PTN network elements 1 to 5 are attached to the main gateway 1, among which, sequentially connected PTN network elements 1 to 3 form an access chain, or called an access ring, and sequentially connected PTN network elements 4 and 5 also constitute an access chain. The PTN network elements 1-5 attached to the active gateway 1 and the active gateway 1 form a DCN domain, or called a management domain, which is denoted as the first DCN domain. The active gateway 1 is used to forward DCN messages between all PTN network elements attached to itself (the PTN network elements 1~5 in the first DCN domain to which the active gateway 1 itself is connected) and the network management server at the aggregation layer , so that the network management server manages PTN network elements 1 to 5 through the primary gateway 1.

Similarly, PTN network elements 6-10 are connected to the primary gateway 2, wherein PTN network elements 6-8 form an access link, and PTN network elements 9 and 10 form an access link. The PTN network elements 6-10 attached to the active gateway 2 and the active gateway 2 form a DCN domain, which is recorded as the second DCN domain. The active gateway 2 is used to forward DCN messages between all the PTN network elements attached to itself (the PTN network elements 6~10 in the second DCN domain connected to the active gateway 2 itself) and the network management server at the aggregation layer , so that the network management server manages the PTN network elements 6-10 through the active gateway 2.

The backup gateway connected to the above two DCN domains at the same time is used to replace the active gateway 1 to forward DCN messages for PTN network elements 1~5 and the network management server when the active gateway 1 fails, or when the active gateway 2 fails , instead of the primary gateway 2 to forward the DCN message for the PTN network elements 6-10 and the network management server.

However, whether it is the active gateway or the standby gateway, its own processing capability is limited, so the number of PTN network elements that can be attached to the active gateway or the standby gateway is also limited. For example, it can be attached to the active The maximum number of PTN network elements under the gateway or standby gateway is 64.

In the PTN network shown in Figure 1, the standby gateway is connected to the first DCN domain and the second DCN domain at the same time, if the number of PTN network elements contained in the two DCN domains is large, for example, 50 , then in order to prevent the number of PTN network elements attached to the backup gateway from exceeding the maximum number of 64 connected network elements, in the prior art, the DCN channel from the backup gateway to the first DCN domain is usually closed, or the backup gateway is connected to the first DCN domain. The DCN channel of the second DCN domain is closed, that is, only the DCN channel from the standby gateway to one DCN domain is opened.

However, when using the method in the prior art to open only one DCN channel in the standby gateway, if the active gateway in the DCN domain connected to the closed DCN channel fails, there will be no If the PTN network elements in the domain forward the DCN message, all the PTN network elements in the DCN domain will be disconnected.

For example, in the PTN network shown in Figure 1, only the DCN channel from the standby gateway to the first DCN domain is opened, and the DCN channel from the standby gateway to the second DCN domain is closed. The DCN channel from the standby gateway to the second DCN domain has been closed, and all PTN network elements (PTN network elements 6~10) in the second DCN domain are out of management, that is, the network management server cannot manage the All PTN network elements.

At this time, in the prior art, the detached PTN network element can only be manually located, and the DCN channel connected to the second DCN domain in the standby gateway is opened through the network management server to restore the management of the PTN network element in the second DCN domain , which will lead to a longer time for the PTN network element in the second DCN domain to be out of management, and a slower recovery management speed.

Contents of the invention

Embodiments of the present invention provide a DCN channel control method and device, which are used to solve the problem that in the prior art, when the primary gateway fails, the PTN network element in the DCN domain where it is located takes a long time to be out of control, and the speed of recovery management is relatively slow. slow problem.

An embodiment of the present invention provides a DCN channel control method, including:

the standby gateway probes the active gateway in each connected DCN domain; and

When it is detected that the active gateway in at least one connected DCN domain fails, open the DCN channel from the standby gateway itself to the DCN domain where the failed active gateway is located, and close the standby gateway itself to the non-faulty DCN channel of the DCN domain where the active gateway resides.

An embodiment of the present invention provides a DCN channel control method, including:

The active gateway receives the probe inquiry message sent by the standby gateway; and

returning a detection response message to the backup gateway, so that the backup gateway determines that the active gateway is not faulty, wherein, when the standby gateway determines that the active gateway in at least one connected DCN domain is faulty, it starts the The DCN channel from the standby gateway itself to the DCN domain where the failed active gateway is located, and close the DCN channel from the standby gateway itself to the DCN domain where the active gateway is not failed.

An embodiment of the present invention provides a control device for a DCN channel, including:

A detection module, configured to detect the active gateway in each connected DCN domain;

The control module is used to open the DCN channel of itself to the DCN domain where the failed active gateway is located when detecting that the active gateway in at least one connected DCN domain fails, and close itself to the active active gateway that has not failed The DCN channel of the DCN domain where it is located.

An embodiment of the present invention provides a primary gateway, including:

A receiving module, configured to receive a detection inquiry message sent by the backup gateway;

A sending module, configured to return a detection response message to the standby gateway, so that the standby gateway determines that the active gateway is not faulty, wherein, when the standby gateway determines that the active gateway in the connected at least one data communication network DCN domain When the gateway fails, open the DCN channel from the standby gateway itself to the DCN domain where the failed active gateway is located, and close the DCN channel from the standby gateway itself to the DCN domain where the active gateway does not fail.

Embodiments of the present invention provide a method and device for controlling a DCN channel. In the method, the standby gateway detects the active gateway in each connected DCN domain, and when a failure of the active gateway in at least one DCN domain is detected, Open the DCN channel from itself to the DCN domain where the failed active gateway is located, and close the DCN channel from itself to the DCN domain where the active active gateway that has not failed occurs. In the above method, the standby gateway detects each active gateway, and controls the opening or closing of the DCN channel from the standby gateway itself to each DCN domain in a timely manner according to the detection results, without manually locating the detached PTN network element, and without manual The management of the detached PTN network element is restored, thus effectively shortening the detachment time of the detached PTN network element and improving the speed of recovery management of the detached PTN network element.

Description of drawings

FIG. 1 is a schematic diagram of a PTN networking structure in the prior art;

Fig. 2 is the DCN channel control process provided by the embodiment of the present invention;

Fig. 3 is the detailed control process of the DCN channel provided by the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a control device for a DCN channel provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a primary gateway provided by an embodiment of the present invention.

detailed description

In order to prevent the number of PTN network elements attached to the standby gateway from exceeding the maximum number of connected network elements in the prior art, usually only the DCN channel from the standby gateway to a DCN domain is opened, but if the closed DCN channel is connected to If the active gateway in the DCN domain fails, all the PTN network elements in the DCN domain will be unmanaged. At this time, the existing technology can only manually locate the unmanaged PTN network elements, and then manually pass through the network management system. The server restores the management of the off-management PTN NE by opening the closed DCN channel. Therefore, the off-management time of the off-management PTN NE is long, and the speed of restoring management on the off-management PTN NE is slow. In the embodiment of the present invention, the standby gateway actively detects each active gateway. When at least one active gateway is detected to be faulty, it opens its own DCN channel to the DCN domain where the failed active gateway is located, and closes itself to the unused gateway. The DCN channel of the DCN domain where the faulty primary gateway is located does not need to manually locate the unmanaged PTN NE, and does not need to manually restore the management of the unmanaged PTN NE, so the unmanagement of the unmanaged PTN NE can be shortened Time, improve the recovery management speed of OTN network elements that are detached.

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Fig. 2 is the DCN channel control process provided by the embodiment of the present invention, which specifically includes the following steps:

S201: The standby gateway detects the active gateway in each connected DCN domain.

In the embodiment of the present invention, the standby gateway actively detects the active gateway in each connected DCN domain, so as to detect whether the active gateway in each connected DCN domain fails. The specific method may be as follows: the standby gateway sends a detection query message to the active gateway at a set time interval based on the connection relationship with the active gateway in the aggregation layer in each connected DCN domain , and determine whether the detection response message returned by the active gateway is received within the set time length, if yes, then determine that the active gateway is not faulty, otherwise, determine that the active gateway is detected to be faulty.

Wherein, the detection query message sent by the standby gateway to the active gateway may specifically be a predefined IFONLINE_MSG message, and the IFONLINE_MSG message may carry the identification information of the standby gateway, the identification information of the active gateway to be sent to, and the message type information . The detection response message returned by the active gateway to the standby gateway may specifically be a predefined ONLINE_MAG message, and the ONLINE_MAG message may carry the identification information of the active gateway, the identification information of the standby gateway to be returned, and message type information.

For example, the PTN network shown in Figure 1 is still used as an example for illustration. Since the standby gateway is directly connected to the active gateway 1 and the active gateway 2 at the aggregation layer, the standby Based on the direct connection relationship with the active gateway 1 in the aggregation layer, the active gateway 1 in the elements 1~5 and the active gateway 1) sends the IFONLINE_MSG message to the active gateway 1 according to the set time interval, similar , for the primary gateway 2 in the second DCN domain (including PTN network elements 6~10 and the primary gateway 2), based on the direct connection relationship with the primary gateway 2 in the aggregation layer, also according to the set time interval Send an IFONLINE_MSG message to active gateway 2.

For the active gateway 1, if the active gateway 1 is not faulty, the active gateway 1 will return the ONLINE_MAG message (probe response message) to the standby gateway after receiving the probe query message (IFONLINE_MSG message), so that the standby gateway Knowing that the active gateway 1 is not faulty, if the active gateway 1 fails, the active gateway 1 will not return the ONLINE_MAG message to the standby gateway. Therefore, the standby gateway can determine whether the ONLINE_MAG message returned by the active gateway 1 is received within a set period of time, and if so, it is determined that the active gateway 1 is not faulty, otherwise, it is determined that the active gateway 1 is faulty.

Similarly, for the active gateway 2, the standby gateway also judges whether it receives the ONLINE_MAG message returned by the active gateway 2 within the set time length, and if so, determines that the active gateway 2 is not faulty, otherwise, determines that the active gateway 2 is not faulty. 2 malfunctioned.

S202: When it is detected that the active gateway in at least one of the connected DCN domains fails, open the DCN channel from the standby gateway itself to the DCN domain where the failed active gateway is located, and close the standby gateway itself to the unfailed active DCN channel of the DCN domain where the gateway resides.

In the embodiment of the present invention, when the standby gateway detects that the active gateway in at least one DCN domain to which it is connected fails, it indicates that all the PTN network elements in the DCN domain where the failed active gateway is located are out of management. In some cases, the backup gateway needs to forward DCN messages to the PTN network elements in the DCN domain where the failed active gateway resides, so that the network management server at the aggregation layer can continue to manage the PTN network elements through the backup gateway. Therefore, the standby gateway opens its own DCN channel to the DCN domain where the failed active gateway is located, and forwards DCN messages for the PTN network elements in the DCN domain where the failed active gateway is located, so as to restore the network management server to the DCN domain. Management of network elements in the PTN.

Moreover, for the detected active gateway that has not failed, it means that all the PTN network elements in the DCN domain where the active gateway is located are not out of management, and there is no need for the backup gateway to support the active gateway. The PTN network element in the DCN domain where the active gateway is located forwards the DCN message. Therefore, the backup gateway closes the DCN channel from itself to the DCN domain where the active gateway that has not failed occurs, so as to reduce the number of PTN network elements mounted under the backup gateway as much as possible, and reduce the load of the backup gateway.

If the standby gateway detects that the active gateways in all the connected DCN domains are not faulty, it can open its own DCN channels to all connected DCN domains, and of course, it can also close its own DCN channels to all connected DCN domains. DCN channel.

Continuing with the above example, assuming that the backup gateway detects that the active gateway 1 is faulty and detects that the active gateway 2 is not faulty, it can open the DCN channel from the standby gateway itself to the first DCN domain where the active gateway 1 is located, and close the A DCN channel from the standby gateway itself to the second DCN domain where the active gateway 2 is located. If the standby gateway detects that neither the active gateway 1 nor the active gateway 2 is faulty, it can open its own DCN channel to the first DCN domain and the second DCN domain at the same time, or close itself to the first DCN domain and the second DCN domain at the same time. The DCN channel of the second DCN domain.

Through the above method, the standby gateway can automatically control the opening or closing of the DCN channel between itself and each DCN domain according to the detection results of each active gateway, without manually locating the detached PTN network element, and without manually going through the network management The server controls the DCN channel of the standby gateway, thus effectively shortening the unmanagement time of the unmanaged PTN network element and improving the recovery and management speed of the unmanaged PTN network element.

Preferably, in order to further reduce the number of PTN network elements mounted under the standby gateway, when the standby gateway detects that the active gateway in two or more connected DCN domains fails, that is, it detects When there are two or more failed active gateways, the standby gateway can determine the highest priority among the failed active gateways according to the priority set in advance for the active gateways in each connected DCN domain and open the DCN channel from the standby gateway itself to the DCN domain where the determined active gateway with the highest priority is located, and close the DCN channel from the standby gateway itself to other DCN domains.

For example, the standby gateway is connected to four DCN domains in total, and the active gateways in these four DCN domains are active gateways 1 to 4 respectively. Assume that the priorities of the four active gateways are set in advance from high to low. The sequence is: active gateway 1, active gateway 2, active gateway 3, and active gateway 4. When the standby gateway detects that active gateway 2 and active gateway 3 fail, the standby gateway will The priority set by each active gateway determines that the active gateway with the highest priority among the failed active gateways is the active gateway 2. Therefore, the standby gateway opens its own DCN channel to the DCN domain where the active gateway 2 is located. Close the DCN channels from itself to other DCN domains, that is, close the DCN channels from itself to the DCN domains where the active gateway 1, the active gateway 3, and the active gateway 4 are located.

Further, in order to improve the utilization rate of the standby gateway as much as possible on the premise that the number of PTN network elements attached to the standby gateway does not exceed the maximum number of network elements attached to the standby gateway, in the embodiment of the present invention, when the standby gateway When it is detected that the active gateway in two or more connected DCN domains fails, it can also be based on the priority set in advance for the active gateway in each connected DCN domain, according to the priority from high to low The order of faulty primary gateways is selected sequentially, and the sum of the number of PTN network elements contained in the DCN domains where the selected primary gateways are located is not greater than the maximum number of connected network elements of the backup gateway, and the backup The DCN channels from the gateway itself to the selected DCN domains where the active gateways are located close the DCN channels from the standby gateway itself to other DCN domains.

For example, the backup gateway is connected to four DCN domains, namely the first DCN domain, the second DCN domain, the third DCN domain, and the fourth DCN domain. The active gateways in these four DCN domains are the active gateway 1 respectively. ~4.

Assuming that the number of PTN network elements contained in these four DCN domains is 30, and the maximum number of network elements attached to the backup gateway is 64, the priorities set in advance for these four main gateways are from high to low. The sequence is: primary gateway 1, primary gateway 2, primary gateway 3, and primary gateway 4.

When the backup gateway detects that the primary gateway 1, the primary gateway 2, and the primary gateway 4 are faulty, the three faulty primary gateways are selected in descending order of priority. When the active gateway 1 is selected, since the number of PTN network elements contained in the first DCN domain where the active gateway 1 is located is 30, which is less than the maximum number of 64 attached network elements of the standby gateway, continue to select the active one in sequence. gateway2. After the active gateway 2 is selected, the sum of the number of PTN network elements contained in the first DCN domain where the active gateway 1 is located and the second DCN domain where the active gateway 2 is located is 60, which is still less than the maximum number of attachments of the standby gateway The number of network elements is 64, so continue to select the active gateway 4 sequentially. However, after the active gateway 4 is selected, the number of PTN network elements included in the first DCN domain where the active gateway 1 is located, the second DCN domain where the active gateway 2 is located, and the fourth DCN domain where the active gateway 4 is located The sum is 90, which exceeds the maximum number of network elements attached to the standby gateway, which is 64. Therefore, the standby gateway only selects the active gateway 1 and the active gateway 2, and does not select the active gateway 4. Subsequently, the standby gateway opens its own DCN channel to the first DCN domain where the selected active gateway 1 is located, opens its own DCN channel to the second DCN domain where the selected active gateway 2 is located, and closes itself to other DCN channels. The DCN channel of the DCN domain (the third DCN domain and the fourth DCN domain).

In addition, in the embodiment of the present invention, in order to ensure the accuracy of the management server's management of each DCN domain through the standby gateway, the standby gateway can also divide the DCN ports in the DCN channels connected to each DCN domain into the same port group, and Forbid DCN messages to be exchanged between DCN ports in the port group. That is, for the DCN ports in each DCN channel, the standby gateway only forwards DCN messages between the DCN ports and the network management server, and does not allow DCN messages to be exchanged between DCN ports.

Continue to take Figure 1 as an example. Assume that in Figure 1, the DCN port connecting the standby gateway to PTN network element 5 is port 1, and the DCN port connecting to PTN network element 3 is port 2, that is, the standby gateway is connected to the first DCN domain The DCN ports in the DCN channel are port 1 and port 2; the DCN port connecting the standby gateway to PTN network element 6 is port 3, and the DCN port connecting to PTN network element 9 is port 4, that is, the standby gateway is connected to the second DCN The DCN ports in the DCN channel of the domain are port 3 and port 4. Then the standby gateway can divide port 1, port 2, port 3, and port 4 into the same port group, and prohibit the exchange of DCN messages among the DCN ports in the port group, that is, port 1, port 2, and port 3 are prohibited. , and port 4 to exchange DCN messages.

Fig. 3 is the detailed control process of the DCN channel provided by the embodiment of the present invention, which specifically includes the following steps:

S301: The standby gateway sends a detection inquiry message to the active gateway in each connected DCN domain based on the connection relationship with the active gateway in the aggregation layer according to a set time interval.

S302: Determine whether there is at least one active gateway that has not returned a probe response message within a set time length, if yes, perform step S303, otherwise, perform step S305.

S303: According to the priority set for each active gateway in advance, according to the order of priority from high to low, sequentially select the active active gateway that has failed, wherein the selected active active gateways are located in the DCN domain. The sum of the number of PTN network elements in the packet transport network is not greater than the maximum number of network elements attached to the standby gateway.

S304: Open the DCN channels from the standby gateway itself to the DCN domains where the selected active gateways are located, and close the DCN channels from the standby gateway itself to other DCN domains.

S305: Open DCN channels from the standby gateway itself to all connected DCN domains.

The above is the DCN channel control method provided by the embodiment of the present invention. Based on the same inventive idea, the embodiment of the present invention also provides a DCN channel control device and a master gateway, as shown in FIG. 4 and FIG. 5 .

Fig. 4 is a schematic structural diagram of a control device for a DCN channel provided by an embodiment of the present invention, specifically including:

A detection module 401, configured to detect the active gateway in each connected DCN domain;

The control module 402 is configured to open the DCN channel of itself to the DCN domain where the failed active gateway is located when detecting that the active gateway in at least one connected DCN domain fails, and close itself to the active active gateway that has not failed. DCN channel of the DCN domain where the gateway resides.

The detection module 401 is specifically configured to, for each active gateway in the connected DCN domain, based on the connection relationship with the active gateway in the convergence layer, according to the set time interval, send a detection to the active gateway. Inquiring message, judging whether the detection response message returned by the active gateway is received within the set time length, if yes, then it is determined that the active gateway is not faulty, otherwise, it is determined that the active gateway is detected to be faulty.

The control module 402 is specifically configured to, according to the priority set in advance for the active gateways in each connected DCN domain, determine the active gateway with the highest priority among the failed active gateways, and open itself to The determined DCN channel of the DCN domain where the active gateway with the highest priority is located closes its own DCN channel to other DCN domains.

The control module 402 is specifically configured to, according to the priorities set in advance for the active gateways in each connected DCN domain, sequentially select the failed active gateways in order of priority from high to low, wherein, The sum of the number of packet transport network PTN network elements contained in the DCN domain where the selected active gateways are located is not greater than the maximum number of attached network elements; open the DCN channel from itself to the DCN domain where the selected active gateways are located, Close the DCN channels from itself to other DCN domains.

The device also includes:

The configuration module 403 is configured to divide the DCN ports in the DCN channels of the connected DCN domains into the same port group, and prohibit the exchange of DCN messages between the DCN ports in the port group.

Specifically, the above-mentioned control device of the DCN channel may be located in the standby gateway.

FIG. 5 is a schematic structural diagram of a primary gateway provided by an embodiment of the present invention, specifically including:

A receiving module 501, configured to receive a probe inquiry message sent by the backup gateway;

The sending module 502 is configured to return a probe response message to the backup gateway, so that the backup gateway determines that the active gateway is not faulty, wherein, when the backup gateway determines that the connected at least one data communication network in the DCN domain When the active gateway fails, open the DCN channel from the standby gateway itself to the DCN domain where the failed active gateway is located, and close the DCN channel from the standby gateway itself to the DCN domain where the active gateway does not fail.

Embodiments of the present invention provide a method and device for controlling a DCN channel. In the method, the standby gateway detects the active gateway in each connected DCN domain, and when a failure of the active gateway in at least one DCN domain is detected, Open the DCN channel from itself to the DCN domain where the failed active gateway is located, and close the DCN channel from itself to the DCN domain where the active active gateway that has not failed occurs. In the above method, the standby gateway detects each active gateway, and controls the opening or closing of the DCN channel from the standby gateway itself to each DCN domain in a timely manner according to the detection results, without manually locating the detached PTN network element, and without manual The management of the detached PTN network element is restored, thus effectively shortening the detachment time of the detached PTN network element and improving the speed of recovery management of the detached PTN network element.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. 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 (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and combinations of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a Means for realizing the functions specified in one or more steps of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present application have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be construed to cover the preferred embodiment and all changes and modifications which fall within the scope of the application.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (7)

1. A control method of a data communication network DCN channel, characterized in that, comprising: the standby gateway probes the active gateway in each connected DCN domain; and When it is detected that the active gateway in at least one connected DCN domain fails, open the DCN channel from the standby gateway itself to the DCN domain where the failed active gateway is located, and close the standby gateway itself to the non-faulty The DCN channel of the DCN domain where the active gateway is located specifically includes: the standby gateway is selected according to the priority set in advance for the active gateway in each connected DCN domain in order of priority from high to low A faulty active gateway, wherein the sum of the number of packet transport network PTN network elements contained in the DCN domain where the selected active gateways are located is not greater than the maximum number of attached network elements of the standby gateway; and open the The DCN channels from the backup gateway itself to the selected DCN domains where the active gateways are located close the DCN channels from the backup gateway itself to other DCN domains. 2. The method according to claim 1, wherein the standby gateway detects the active gateway in each connected DCN domain, specifically comprising: The standby gateway sends a detection query message to the active gateway at a set time interval based on the connection relationship with the active gateway in the aggregation layer for each connected active gateway in the DCN domain; and Judging whether the detection response message returned by the active gateway is received within the set time length, if yes, it is determined that the active gateway is not faulty, otherwise, it is determined that the active gateway is detected to be faulty. 3. The method of claim 1, further comprising: The backup gateway divides the DCN ports in the DCN channels connected to the DCN domains into the same port group, and prohibits DCN messages from being exchanged between the DCN ports in the port group. 4. A control method of a data communication network DCN channel, characterized in that, comprising: The active gateway receives the probe inquiry message sent by the standby gateway; and returning a detection response message to the backup gateway, so that the backup gateway determines that the active gateway is not faulty, wherein, when the standby gateway determines that the active gateway in at least one connected DCN domain is faulty, it starts the Describe the DCN channel from the standby gateway itself to the DCN domain where the failed active gateway is located, and close the DCN channel from the standby gateway itself to the DCN domain where the active gateway that has not failed, specifically includes: the standby gateway according to the previous For the priority set for the active gateways in each connected DCN domain, select the failed active active gateways in order according to the order of priority from high to low. The sum of the number of included packet transport network PTN network elements is not greater than the maximum number of attached network elements of the backup gateway; and the DCN channel from the backup gateway itself to the selected DCN domain where each active gateway is located is opened, and closed DCN channels from the backup gateway itself to other DCN domains. 5. A backup gateway, characterized in that, comprising: A detection module, configured to detect the active gateway in each connected DCN domain; The control module is used to open the DCN channel of itself to the DCN domain where the failed active gateway is located when detecting that the active gateway in at least one connected DCN domain fails, and close itself to the active active gateway that has not failed The DCN channel of the DCN domain where it is located is specifically used to select the faulty active gateway according to the priority set in advance for the active gateway in each connected DCN domain in order of priority from high to low , wherein, the sum of the number of packet transport network PTN network elements contained in the DCN domain where the selected main gateways are located is not greater than the maximum number of attached network elements; DCN channel, close the DCN channel from itself to other DCN domains. 6. The standby gateway according to claim 5, wherein the detection module is specifically configured to, for the active gateway in each connected DCN domain, based on the connection relationship with the active gateway in the aggregation layer , according to the set time interval, send a probe query message to the active gateway, and judge whether the probe response message returned by the active gateway is received within the set time length, and if so, determine that the active gateway has not been detected. If a fault occurs, otherwise, it is determined that the active gateway is detected to be faulty. 7. The backup gateway according to claim 5, wherein the backup gateway further comprises: The configuration module is configured to divide the DCN ports in the DCN channels of the connected DCN domains into the same port group, and prohibit the exchange of DCN messages between the DCN ports in the port group.