WO2019091350A1

WO2019091350A1 - Dual uplink method, optical network management device, and optical transmission system

Info

Publication number: WO2019091350A1
Application number: PCT/CN2018/113903
Authority: WO
Inventors: 谢崇进; 尹亚伟; 陈赛
Original assignee: 阿里巴巴集团控股有限公司
Priority date: 2017-11-07
Filing date: 2018-11-05
Publication date: 2019-05-16
Also published as: CN109756797A

Abstract

Provided in the present application are a dual uplink method, an optical network management device, and an optical transmission system. An optical transmission device in the optical transmission system is connected to the optical network management device via an in-band management channel and an out-of-band management channel. The method comprises: acquiring a state parameter of the in-band management channel; determining whether the in-band management channel is normal on the basis of the state parameter; if yes, then transmitting management control information via the in-band management channel; and if not, then transmitting management control information via the out-of-band management channel. With the employment of embodiments of the present application, solved is the problem in the prior art in which an out-of-band DCN could not transmit a large volume of real-time monitoring data due to low bandwidth; secondly, eliminated is the problem with connection reliability of a single uplink scheme; and thirdly, subsystems of the optical transmission network are decoupled, and optical network devices can be from different manufacturers.

Description

Dual uplink method, optical network management device, and optical transmission system

The present application claims priority to Chinese Patent Application No. 201711084841.5, entitled "Double-Uplinking Method, Optical Network Management Device, and Optical Transmission System", filed on November 7, 2017, the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present application relates to the field of optical transmission technologies, and in particular, to a dual uplink method, an optical network management device, and an optical transmission system.

Background technique

Due to the development of Internet services, the size of each data center is increasing, and the interconnection between data centers has an increasing demand for transmission capacity. At present, the interconnection between large data centers is basically a wavelength division multiplexing (WDM) optical transmission system. At present, the optical transmission system basically uses the Data Communication Network (DCN) of the Out-Of-Band (OOB) to transmit the management control information in the same network as the service provider.

Summary of the invention

However, the inventor found in the research process that with the development of optical transmission network technology in the data center and the requirement for real-time monitoring of optical networks, firstly, because the DCN of the OOB of the data center is generally a network of rented operators, the capacity is small. It satisfies the requirements of not a large amount of real-time monitoring data transmission; secondly, the bandwidth of OOB's DCN is small and the performance is unreliable. If the management control information of all optical transmission equipments is only carried out through the out-of-band network, the security of the optical transmission network will be greatly reduced. And reliability; again, in an open optical transmission network, there will be multiple manufacturers of optical network equipment in an optical transmission system, and each manufacturer's optical network equipment needs an independent management network, which will give the OOB DCN Cause a great burden.

Based on this, the present application provides a method for simultaneously adopting an in-band management channel and an out-of-band management channel for dual uplink. The NMS or SDN controller can use the in-band management channel to transmit management control information when the in-band management channel is normal. When the in-band management channel is abnormal, the out-of-band management channel is used to transmit the management control information, because the bandwidth of the In-band DCN is much larger than the OCN of the OOB in the actual application, and in the data center environment, In- The reliability of the DCN of the band is also much higher than that of the OCN. Therefore, the NMS or SDN controller preferentially uses the DCN of the In-band, but only uses the DCN of the OOB when the In-bandDCN fails or the special case needs to be switched. This ensures the reliability and high efficiency of management control information transmission.

The application also provides an optical network management device and an optical transmission system to ensure the implementation and application of the above method in practice.

In order to solve the above problem, the present application discloses a dual uplink method, in which an optical transmission device in an optical transmission system is connected to an optical network management device through an inband management channel and an outband management channel, and the method includes:

Obtaining a state parameter of the inband management channel;

Determining, according to the state parameter, whether the in-band management channel is normal, and if so, transmitting management control information through the in-band management channel, and if not, transmitting management control information through the out-of-band management channel.

Wherein, in the case that the in-band management channel is normal, the method further includes:

Determining whether a manual switching command is received, the manual switching command is used to indicate switching from the in-band management channel to the out-of-band management channel, and if so, transmitting management control information through the out-of-band management channel, if no And transmitting the management control information by using the in-band management channel.

The determining, according to the state parameter, whether the in-band management channel is normal, includes:

Receiving signaling according to whether the optical transmission device receives the connection sent by the inband management channel; or according to whether the network quality parameter detected by the network monitoring device meets the standard; the network quality parameter includes: delay, jitter, and Availability and / or bandwidth utilization.

The first data center is respectively connected to the first switch and the second switch, the first switch is connected to the inband management channel, the second switch is connected to the outband management channel, and the second data center is respectively Connected to a third switch and a fourth switch, the third switch is connected to the inband management channel, the fourth switch is connected to the outband management channel, and the management information is transmitted through the inband management channel, include:

And transmitting the management control information to the first switch connected to the first data center by using an inband management channel, where the first switch transmits the management control information to an optical transmission device that belongs to different protocols;

The management control information is sent to the third switch connected to the second data center through the inband management channel, and the third switch transmits the management control information to the optical transmission device belonging to different protocols.

The first data center is respectively connected to the first switch and the second switch, the first switch is connected to the inband management channel, the second switch is connected to the outband management channel, and the second data center is respectively Connected to a third switch and a fourth switch, the third switch is connected to the in-band management channel, the fourth switch is connected to the out-of-band management channel, and the transmission management control is performed by the out-of-band management channel Information, including:

And transmitting the management control information to the second switch connected to the first data center by using an outband management channel, where the second switch transmits the management control information to an optical transmission device that belongs to a different protocol;

The management control information is sent to the fourth switch connected to the second data center through the outband management channel, and the fourth switch transmits the management control information to the optical transmission device belonging to different protocols.

The embodiment of the present application further discloses an optical network management device, including:

a memory for storing one or more programs;

The processor, configured to execute the one or more programs, includes instructions for: acquiring a state parameter of the inband management channel, and determining, according to the state parameter, whether the inband management channel is normal, If yes, determining to transmit management control information through the inband management channel, and if not, determining to transmit management control information through the outband management channel;

And a communication interface, configured to send the management control information to the inband management channel, or transmit the management control information to the outband management channel.

Wherein, the processor is further configured to:

The processor is configured to determine, according to the state parameter, whether the in-band management channel is normal, including:

The first data center is respectively connected to the first switch and the second switch, the first switch is connected to the inband management channel, the second switch is connected to the outband management channel, and the second data center is respectively Connected to a third switch and a fourth switch, the third switch is connected to the in-band management channel, the fourth switch is connected to the out-of-band management channel, and the processor is used for transmission management through an in-band management channel Control information, including:

The first data center is respectively connected to the first switch and the second switch, the first switch is connected to the inband management channel, the second switch is connected to the outband management channel, and the second data center is respectively Connected to a third switch and a fourth switch, the third switch is connected to the in-band management channel, the fourth switch is connected to the out-of-band management channel, and the processor is configured to pass the out-of-band management channel Transmission management control information, including:

The embodiment of the present application further discloses an optical transmission system, where the optical transmission system includes:

a first data center and a second data center, an optical network management device and an optical transmission device;

The first data center is connected to the optical network management device by using an inband management channel and an outband management channel, where the second data center is connected to the optical network management by using an inband management channel and an outband management channel. And transmitting, by the optical data transmission device and the transmission medium, the optical signal between the first data center and the second data center;

The optical network management device is configured to control the optical transmission device, and obtain a state parameter of the inband management channel, and determine, according to the state parameter, whether the inband management channel is normal, and if yes, pass The in-band management channel transmits management control information, and if not, transmits management control information through the out-of-band management channel.

The optical transmission system further includes: a first switch and a second switch connected to the first data center, and a third switch and a fourth switch connected to the second data center, where

The first switch connects the optical transmission device of the first data center to the optical network management device by using the inband management channel, and the second switch passes the optical transmission device of the first data center Connecting the out-of-band management channel to the optical network management device; and,

The third switch connects the optical transmission device of the second data center to the optical network management device by using the inband management channel, and the fourth switch passes the optical transmission device of the second data center The outband management channel is connected to the optical network management device.

The embodiment of the present application further discloses an optical transmission method, including:

Obtaining a state parameter of an in-band management channel in the optical transmission system;

Determining that the in-band management channel is in an abnormal state;

Information is transmitted through an out-of-band management channel in the optical transmission system.

The in-band management channel is a channel for managing a network by using management control information in a service channel; the out-of-band management channel is a channel for managing a network by using management control information outside the service channel.

The optical transmission system includes at least one optical network device, wherein the optical network device includes at least two management network ports, wherein the two management network ports have different IP addresses for transmitting management control information.

The embodiment of the present application further provides an optical transmission method, including:

Obtaining state parameters of an out-of-band management channel in the optical transmission system;

Determining that the out-of-band management channel is in an abnormal state;

Information is transmitted through an in-band management channel in the optical transmission system.

The first data center is connected to the optical network management device through an outband management channel, the second data center is connected to the optical network management device through an outband management channel, and the first data center And transmitting, by the optical transmission device and the transmission medium, an optical signal between the second data center and the second data center;

The optical network management device is configured to acquire a state parameter of an inband management channel in the optical transmission system, determine that the inband management channel is in an abnormal state, and transmit information by using an outband management channel in the optical transmission system.

The first data center is connected to the optical network management device by using an inband management channel, the second data center is connected to the optical network management device by using an inband management channel, and the first data center And transmitting, by the optical transmission device and the transmission medium, an optical signal between the second data center and the second data center;

The optical network management device is configured to acquire a state parameter of an out-of-band management channel in the optical transmission system, determine that the out-of-band management channel is an abnormal state, and transmit information by using an in-band management channel in the optical transmission system.

Optical network management equipment NMS, in-band management channel, out-of-band management channel, optical line side device, and terminal system device;

The optical line side device is connected to the optical network management device by using the inband management channel and the outband management channel; the terminal system device is connected to the inband management channel and the outband management channel to The optical network management device;

The optical network management device is configured to: when the in-band management channel is normal, transmit management control information to the optical line side device and the terminal system device by using the inband management channel; When the channel is in an abnormal state, the management information is transmitted to the optical line side device and the terminal system device through the outband management channel.

Compared with the prior art, the embodiments of the present application include the following advantages:

In the embodiment of the present application, by having two management network ports for each optical network device, each management network port has an independent IP address, so that each optical network device in the optical transmission system can pass through two management network ports. It can be connected to the DCN in two points, that is, the in-band management channel and the out-of-band management channel are dual-connected to the DCN. First, because the In-band DCN is the production network of the data center and has sufficient bandwidth, the NMS or SDN controller preferentially adopts the In-band DCN, which solves the low bandwidth of the Out-Of-Band in the prior art. The problem of not being able to transmit a large amount of real-time monitoring data; secondly, due to the double uplink mode, when there is a problem in the in-band management channel, an out-of-band management channel can also be used, thereby eliminating the problem of low connection reliability in the single uplink mode. Again, even if the optical line side equipment and the terminal system equipment in the optical transmission system do not belong to the same manufacturer, since the switches are added, the subsystems of the optical transmission network are decoupled, and the respective optical network equipments can come from different Manufacturer.

Of course, implementing any of the products of the present application does not necessarily require all of the advantages described above to be achieved at the same time.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

1 is a schematic structural diagram of a conventional mode optical transmission network of the present application;

2 is a schematic structural diagram of an optical transmission network of a dual uplink mode of the present application;

3 is an exemplary schematic diagram of an optical network device of the present application having two management network ports;

4 is an exemplary flowchart of an embodiment of a dual uplink method of the present application;

5 is another schematic structural diagram of an optical transmission network of a dual uplink mode of the present application;

6 is another exemplary schematic diagram of an optical network device of the present application having two management network ports;

7 is another exemplary flowchart of an embodiment of a dual uplink method of the present application;

FIG. 8 is a schematic structural diagram of an embodiment of an optical network management device of the present application.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

Referring to FIG. 1, an exemplary scenario diagram of an optical transmission management network used in data center A and data center B in the prior art. The WDM (Wavelength Division Multiplexing) optical transmission system connects two data centers, that is, the data center A and the data center B. The transmission link connects some OA sites through an Optical Supervisory Channel (OSC). Optical amplifier (optical amplifier) and ROADM site (Reconfigurable Optical Add-Drop Multiplexer, reconfigurable optical add/drop multiplexer). It can be understood that for the data center interconnection in the metropolitan area, the OA site and the ROADM site may not be set in the middle.

In Figure 1, the different channels of the optical terminal equipment (OTE) in data center A or data center B pass the wavelength division multiplexer/demultiplexer (Mux/DeM, Muticerer/Demultiplex). Synthesized together through the OA site for amplification and then connected to the OSC. Since the OA site and the ROADM site between data centers A and B may not have a data communication network, the operational monitoring, management, and control information of the OA site and the ROADM site are transmitted to the data centers A and B through the OSC.

In practical applications, the end system equipment (including OTE and Mux/DeM in Figure 1) and the optical line side equipment (between OTE and Mux/DeM in data center A and B in Figure 1) belong to the same A manufacturer, OSC can also transfer operational monitoring, management and control information from one end to the other. In data centers A and B, the management port of the optical network is connected to the DCN (Data Communication Network) of the out-of-band management channel OOB (Out-Of-Band), and then to the NMS (Network Management System). ) Connected to the SDN (Software Defined Network) controller.

For the scenario of the optical transmission network in FIG. 1, first, since the terminal system device or the optical line side device is connected to the OOB network at a single point, once the connection is broken, the terminal system device or the optical line side device will be off. The tube leads to low reliability of the optical transmission network. Secondly, OOB long-distance links are mostly leased line bandwidth of telecom operators. The capacity of the network is also low, usually only a few megabytes of bandwidth, which is not conducive to transmitting a large amount of management control information in the optical network, or real-time monitoring data (for example, When using OTDR for fiber link monitoring, it is not conducive to the upgrade of the network management platform.

Referring to FIG. 2, an exemplary scenario diagram of a dual uplink manner is used in this application. In Figure 2, the OA site and the ROADM site between the data center A and the data center B have their operational monitoring and management control information transmitted to the data centers A and B at both ends through the OSC.

Two management network ports are configured in optical network devices (including OTE, Mux/DeM, OA sites, etc.) in data centers A and B. Each management network port has an independent IP address, and one of the management network ports is connected to the outband. Management channel OOB (out-of-band) data communication network (DCN), which is connected with NMS (Network Management System) and SDN (software defined network) controller; another management network port is connected to the in-band management channel In -band's data communication network (DCN), which is connected to the NMS (Network Management System) and SDN (Software Defined Network) controllers. The in-band management channel is a channel for managing the network through management control information in the service channel; the out-of-band management channel is a channel for managing the network through management control information outside the service channel. The function of the management channel can be used to transmit management control information. From the perspective of the upper layer application, the service channel can be used to transmit valid data or signaling actually generated during the communication process.

It can be understood that in the solution of FIG. 2, the optical line side device and the terminal system device may belong to the same manufacturer.

Referring again to FIG. 3, there is an exemplary schematic diagram of two management network ports for optical network devices in data centers A and B. Assume that Figure 3 is an exemplary schematic diagram of a board, which is a printed circuit board that is fabricated with a ferrule that can be inserted into a slot of a computer's main circuit board (ie, the motherboard) for controlling hardware. Run, for example, monitors, capture cards, etc., after installing the driver, you can implement the corresponding hardware functions.

In the exemplary board of Figure 3, there are 8*3 card slots for pluggable link cards, one of which is the control board of the rack, and two networks are set on it. The ports, Network port 1 and Network port 2, are used to connect to the in-band management channel In-band and the out-of-band management channel OOB, respectively. Of course, the exemplary data in FIG. 3 is specific data in practical applications, and should not be construed as limiting the application.

Referring to FIG. 4, a flowchart of an embodiment of a dual uplink method of the present application is shown. The present embodiment can be applied to the optical transmission system shown in FIG. 2 and FIG. 3. The dual uplink refers to the implementation of the present application. In the example, the optical line side device and the terminal system device access the DCN through the inband management channel In-band and the outband management channel OOB. In the optical transmission system, the management control information can be transmitted by the NMS or the SDN controller. Therefore, the embodiment can also be applied to the NMS or the SDN controller, which is not limited in this embodiment. This embodiment may include the following steps 401 to 405:

Step 401: Acquire a state parameter of the inband management channel.

In practical applications, the NMS or SDN controller can check whether the in-band management channel is normal through a preset detection mode. For example, if the preset detection mode is the handshake protocol, the data packet for implementing the handshake protocol may be sent through the inband management channel, and then the data packet returned by the optical network device may be acquired, so as to be determined according to the returned data packet. Is the in-band management channel normal? For example, if the preset detection mode is heartbeat detection, the heartbeat message may be sent through the inband management channel, and then the response message returned by the optical network device may be acquired, so as to determine whether the inband management channel is determined according to the returned response message. normal.

Certainly, other detection methods may be set by those skilled in the art, and the specific detection manner is not limited herein.

Step 402: Determine whether the in-band management channel is normal according to the state parameter. If not, proceed to step 403, and if yes, proceed to step 404.

In this step, whether the in-band management channel is normal according to whether the optical transmission device receives the connection holding signaling sent by the inband management channel, or whether the network quality parameter detected by the network monitoring device is To achieve the standard, to determine whether the management channel in the band is normal. The network quality parameters include, but are not limited to, delay, jitter, reachability, bandwidth utilization, and the like.

The optical transmission device can periodically send to the NMS or the SDN controller through the inband management channel, and the period can be preset, for example, 10 milliseconds, etc., if the NMS or the SDN controller periodically receives the optical transmission device through the inband. If the connection sent by the management channel maintains signaling, it is judged that the in-band management channel is normal. If it is not received, it is judged that the in-band management channel is abnormal. In practical applications, it is also possible to use an existing network monitoring device capable of detecting whether the network quality parameter is up to standard, to detect whether the in-band management channel is normal. For example, the network quality parameters such as delay, jitter, reachability, or bandwidth utilization of the in-band management channel are detected. If the standard is reached, the inband management channel is normal. If the standard is not met, the inband management channel is abnormal. The standard of each network quality parameter can be set by a person skilled in the art.

Step 403: Transmit management control information through an out-of-band management channel.

If the inband management channel is not normal, the management control information is transmitted through the outband management channel. The management control information may include physical attributes, performance parameters, device parameters, alarm information, control commands, and the like of each optical network device. Because the bandwidth of the out-of-band management channel is small, when the in-band management channel is abnormal, the out-of-band management channel is used to transmit the management control information, so that the management control information can be reliably obtained through the dual uplink mode. Transmission.

In practical applications, if the in-band management channel is normal, the in-band management channel can be used directly to transfer management control information. Of course, in the case that the in-band management channel is normal, the method may further include:

Step 404: Determine whether a manual switching command is received, the manual switching command is used to indicate switching from the inband management channel to the outband management channel, and if yes, return to step 403, if no, proceed to step 405. .

Because in practical applications, although the in-band management channel is normal and the management control information is being transmitted, it may be necessary to manually intervene in which channel transmission is used for the management control information. In this case, the operator can control through NMS or SDN. The operation interface of the device sends a manual switching command for instructing switching from the in-band management channel to the out-of-band management channel, that is, using the out-of-band management channel to continue the transmission management control information.

Step 405: The management control information is transmitted through the inband management channel.

If the inband management channel is normal and there is no manual switching command to switch to the outband management channel to transmit management control information, the inband management channel can continue to be used to transmit the management control information. In practical applications, the bandwidth of the in-band management channel is generally much larger than the bandwidth of the out-of-band management channel. Therefore, a small portion of the bandwidth of the in-band management channel is used to transmit management control information, and the management channel in the band is not When the manual switching command is received normally or the out-of-band management channel is used to transmit the management control information, the transmission reliability of the management control information can be made higher.

It can be seen that, in the embodiment of the present application, the in-band management channel and the out-of-band management channel are dual-uplinked at the same time, and the NMS or SDN controller can use the in-band management channel to transmit management control information when the in-band management channel is normal. When the in-band management channel is abnormal, the out-of-band management channel is used to transmit the management control information, because the bandwidth of the In-band DCN is much larger than the Out-of-band DCN in the actual application, and in the data center environment. The reliability of the In-band DCN is also much higher than that of the Out-Of-Band. Therefore, the NMS or SDN controller preferentially uses the In-band DCN, only when the In-band DCN fails or in special cases. Out-Of-Band's DCN is used when switching is required, which ensures the reliability and high efficiency of management control information transmission.

In actual applications, there is a case where, although an optical network device of one data center can access the OOB network through the OSC channel to the other end, the failure of the optical network device usually causes the OSC to be interrupted. Therefore, the existing In the technology, the requirements of the optical line side device and the terminal system device belong to the same manufacturer. When the optical line side device and the terminal system device do not belong to the same scenario, the optical transmission network cannot smoothly transmit the management control information. To this end, the embodiments of the present application provide a solution in an optical transmission network composed of optical line side devices and terminal system devices of different manufacturers.

FIG. 5 is a schematic diagram of an exemplary scenario of an optical transmission network in an actual application according to an embodiment of the present application. In FIG. 5, the optical transmission network is an open optical transmission network, that is, the optical line side equipment and the terminal system equipment in the optical transmission network are different manufacturers. In Figure 5, the same management control platform NMS or SDN controller is used to uniformly manage optical network devices of multiple vendors. In Figure 5, each optical network device is provided with two management network ports, and each management network port is also configured with a separate IP address, whether it is data center A or data center B optical network device, these two management The network ports are each connected to two different switches.

For example, for data center A, the first switch "SW1" connects the data center A's OTE, Mux/DeM, OA site and other devices to the In-band DCN, and the other switch "SW2" to the data center B. Devices such as OTE, Mux/DeM, and OA sites are connected to the out-of-band DCN, and the NMS or SDN controllers are connected to the two DCNs of In-band and Out-Of-Band, respectively. Similarly, for data center B, the first switch "SW1" connects the OTE, Mux/DeM, OA sites and other devices of data center A to the DCN of the In-band, and the other switch "SW2" connects the data center B. The OTE, Mux/DeM, OA site and other devices are connected to the OCN of the OOB, and the NMS or SDN controller is connected to the two DCNs of the In-band and Out-Of-Band respectively.

Of course, the exemplary data in FIG. 5 is a specific example and should not be construed as limiting the application. In addition, in order to ensure that the optical network devices of the data centers in the optical transmission network in FIG. 5 can smoothly access the two switches, as shown in FIG. 6, two management networks are set for each optical network device shown in FIG. Port (Network port 1 and Network port 2), and each management network port has a separate IP address, that is, the IP addresses of Network port 1 and Network port 2 are different. Figure 6 symbolically shows the device configuration of a board. In Figure 6, there are five sub-frames. Two management network ports are in the management sub-frame of the device, and each sub-frame can be inserted into a board for optical line side. Equipment or terminal system equipment. Of course, FIG. 6 only exemplifies five sub-frames. In actual applications, the number of sub-frames can be arbitrarily set, and physical attributes such as the height or length of the version can be pre-configured by those skilled in the art according to actual needs.

Referring to FIG. 7, a flowchart of another dual uplink method embodiment of the present application is shown. The present embodiment can be applied to the optical transmission system shown in FIG. 5 and FIG. 6. The double uplink refers to the present application. The optical line side device and the terminal system device in the embodiment access the DCN through the inband management channel In-band and the outband management channel OOB. In the optical transmission network in this embodiment, the first data center (data center A) is respectively connected to the first switch (SW1 connected to the data center A) and the second switch (SW2 connected to the data center), a first switch is connected to the in-band management channel, the second switch is connected to the out-of-band management channel; and a second data center (data center B) is respectively connected to a third switch (SW1 connected to the data center B) And a fourth switch (SW2 connected to data center B) connected to the in-band management channel, the fourth switch being connected to the out-of-band management channel.

In the optical transmission system, the management control information can be transmitted by the NMS or the SDN controller. Therefore, the embodiment can also be applied to the NMS or the SDN controller, which is not limited in this embodiment. This embodiment may include the following steps 701 to 705:

Step 701: Acquire a state parameter of the inband management channel.

Step 702: Determine whether the in-band management channel is normal according to the state parameter. If not, proceed to step 703, and if yes, proceed to step 704.

In this embodiment, the implementation process of step 701 and step 702 is the same as step 401 and step 402, and details are not described herein again.

Step 703: Send the management control information to the second switch connected to the first data center by using an outband management channel, and the second switch transmits the management control information to the optical transmission device that belongs to different protocols; and The control information is sent to the fourth switch connected to the second data center through the outband management channel, and the fourth switch transmits the management control information to the optical transmission device belonging to different protocols.

In this embodiment, if the in-band management channel is abnormal, for the data center A (ie, the first data center) shown in FIG. 5, the NMS or SDN controller may send the management control information through the outband management channel. The second switch connected to the data center A, that is, SW2, and the SW2 connected by the data center A transmit the management control information to the optical transmission devices belonging to different protocols.

The optical transmission equipment belonging to different protocols may include: an optical line side equipment OA station, a terminal system equipment OTE, a Mux/DeM, because the optical line side equipment OA station and the terminal system equipment OTE, Mux/DeM belong to different protocols. For example, devices belonging to different manufacturers can connect optical line side devices and terminal system devices of different protocols through the switch SW2, and access the outband management channel to connect to the NMS or SDN controller, thereby enabling the optical network device to be up. Compatible with equipment from different manufacturers.

For the data center B, the NMS or the SDN controller can send the management control information to the fourth switch connected to the second data center (ie, the SW2 connected to the data center B) through the outband management channel, so that the fourth switch will manage Control information can also be transmitted to optical transmission equipment belonging to different protocols.

Step 704: Determine whether a manual switching command is received. The manual switching command is used to indicate switching from the inband management channel to the outband management channel. If yes, return to step 703. If no, proceed to step 705.

For the implementation process of step 704, reference may be made to the implementation process of step 404, and details are not described herein again.

Step 705: Send the management control information to the first switch connected to the first data center by using the inband management channel, where the first switch transmits the management control information to the optical transmission device that belongs to different protocols; and, the management control information is to be The third switch transmits the management control information to the optical transmission device belonging to different protocols through the in-band management channel to the third switch connected to the second data center.

If the in-band management channel is normal, for the data center A (ie, the first data center) shown in FIG. 5, the NMS or SDN controller can send the management control information to the data center A through the inband management channel. The first switch, SW1, is connected by the SW1 connected by the data center A to the optical transmission equipment belonging to different protocols.

For data center B, the NMS or SDN controller can send the management control information to the third switch connected to the second data center (ie, SW1 connected to data center B) through the inband management channel, so that the third switch will manage Control information can also be transmitted to optical transmission equipment belonging to different protocols.

It can be seen that, in this embodiment, the NMS or SDN controller can use the inband management channel to transmit management control information when the inband management channel is normal, and use the outband management channel to transmit when the inband management channel is abnormal. Management control information, because the bandwidth of the In-band DCN is much larger than the Out-of-band DCN in the actual application, and the reliability of the In-band DCN in the data center environment is also better than that of the Out-Of-Band DCN. It is much higher. Therefore, the NMS or SDN controller prefers the In-band DCN. It only uses the Out-Of-Band DCN when the In-band DCN fails or needs to be switched under special circumstances. This ensures management. Control the reliability and efficiency of information transmission.

In addition, in an actual application, after the NMS or the SDN controller acquires the state parameter of the in-band management channel in the optical transmission system, if it is determined that the in-band management channel is abnormal, the NMS or the SDN controller may transmit through the out-of-band management channel in the optical transmission system. information. The NMS or SDN controller can also obtain the status parameters of the out-of-band management channel in the optical transmission system. If an abnormality occurs in the out-of-band management channel, the information can be directly transmitted through the in-band management channel in the optical transmission system.

For the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present application is not limited by the described action sequence, because according to the present application, These steps can be performed in other orders or simultaneously. In the following, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

Referring to FIG. 8, the present application further provides an embodiment of an optical network management device. In this embodiment, the device may include:

a memory 802, configured to store one or more program instructions and/or data;

The processor 801 is configured to execute the one or more program instructions and/or data to include instructions for:

Obtaining a status parameter of the in-band management channel, and determining, according to the status parameter, whether the in-band management channel is normal, and if yes, determining to transmit management control information by using the in-band management channel, and if not, determining to pass The out-of-band management channel transmits management control information.

Wherein, in the case that the in-band management channel is normal, the processor may also be used to:

The processor is configured to determine, according to the state parameter, whether the in-band management channel is normal, including but not limited to:

Receiving signaling according to whether the optical transmission device receives the connection sent by the inband management channel; or according to whether the network quality parameter detected by the network monitoring device meets the standard; the network quality parameter includes but is not limited to delay, jitter , reachability, bandwidth utilization, and more.

The first data center is respectively connected to the first switch and the second switch, the first switch is connected to the inband management channel, the second switch is connected to the outband management channel, and the second data center is respectively Connected to a third switch and a fourth switch, the third switch is connected to the in-band management channel, the fourth switch is connected to the out-of-band management channel, and the processor is used for transmission management through an in-band management channel Control information, which can include:

The first data center is respectively connected to the first switch and the second switch, the first switch is connected to the inband management channel, the second switch is connected to the outband management channel, and the second data center is respectively Connected to a third switch and a fourth switch, the third switch is connected to the in-band management channel, the fourth switch is connected to the out-of-band management channel, and the processor is configured to pass the out-of-band management channel Transmission management control information, which may include:

The embodiment of the present application further provides an optical transmission system, where the optical transmission system may include:

The first data center may be connected to the optical network management device by using an inband management channel and an outband management channel, where the second data center is connected to the optical network by using an inband management channel and an outband management channel. Managing the device, and transmitting, by the optical data transmission device and the transmission medium, the optical signal between the first data center and the second data center;

The optical transmission system may further include: a first switch and a second switch connected to the first data center, and a third switch and a fourth switch connected to the second data center, where The first switch connects the optical transmission device of the first data center to the optical network management device by using the inband management channel, and the second switch passes the optical transmission device of the first data center An outband management channel is connected to the optical network management device; and the third switch connects the optical transmission device of the second data center to the optical network management device by using the inband management channel, The four switches connect the optical transmission device of the second data center to the optical network management device through the outband management channel.

The embodiment of the present application further provides an optical transmission system, where the optical transmission system may further include:

The first data center is connected to the optical network management device through an outband management channel, the second data center is connected to the optical network management device through an outband management channel, and the first data center And transmitting, by the optical transmission device and the transmission medium, an optical signal; and the optical network management device, configured to acquire a state parameter of an in-band management channel in the optical transmission system; The in-band management channel is in an abnormal state; information is transmitted through an out-of-band management channel in the optical transmission system.

The first data center is connected to the optical network management device by using an inband management channel, the second data center is connected to the optical network management device by using an inband management channel, and the first data center And transmitting, by the optical transmission device and the transmission medium, an optical signal; and the optical network management device, configured to acquire a state parameter of an out-of-band management channel in the optical transmission system; The out-of-band management channel is in an abnormal state; information is transmitted through an in-band management channel in the optical transmission system.

The embodiment of the present application further provides an optical transmission system, which may include:

The optical network management device NMS, the inband management channel, the outband management channel, the optical line side device, and the terminal system device; wherein the optical line side device is connected to the outband management channel by the inband management channel To the optical network management device; the terminal system device is connected to the optical network management device by using the inband management channel and the outband management channel; the optical network management device is configured to be in the band When the management channel is normal, the management information is transmitted to the optical line side device and the terminal system device through the inband management channel; when an abnormality occurs in the inband management channel, the outband management channel is used to The optical line side device and the terminal system device transmit management control information.

It should be noted that each embodiment in the specification is described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the embodiments are referred to each other. can. For the device type embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

Finally, it should also be noted that in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities. There is any such actual relationship or order between operations. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The dual uplink method, the optical network management device, and the optical transmission system provided by the present application are described in detail above. The principles and implementation manners of the present application are described in the specific examples. The description of the above embodiments is only used for To help understand the method of the present application and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. It should not be construed as limiting the application.

Claims

A dual uplink method, characterized in that an optical transmission device in an optical transmission system is connected to an optical network management device through an inband management channel and an outband management channel, and the method includes:

Obtaining a state parameter of the inband management channel;

Determining, according to the state parameter, whether the in-band management channel is normal, and if so, transmitting management control information through the in-band management channel, and if not, transmitting management control information through the out-of-band management channel.
The method according to claim 1, wherein in the case that the in-band management channel is normal, the method further includes:

Determining whether a manual switching command is received, the manual switching command is used to indicate switching from the in-band management channel to the out-of-band management channel, and if so, transmitting management control information through the out-of-band management channel, if no And transmitting the management control information by using the in-band management channel.
The method according to claim 1, wherein determining whether the in-band management channel is normal according to the state parameter includes, but is not limited to:

Receiving signaling according to whether the optical transmission device receives the connection sent by the inband management channel; or according to whether the network quality parameter detected by the network monitoring device meets the standard; the network quality parameter includes but is not limited to delay, jitter , reachability, bandwidth utilization, and more.
The method of claim 1 wherein the first data center is coupled to the first switch and the second switch, the first switch is coupled to the in-band management channel, and the second switch is coupled to the An out-of-band management channel; the second data center is respectively connected to the third switch and the fourth switch, the third switch is connected to the in-band management channel, and the fourth switch is connected to the out-of-band management channel Transmitting management control information through the in-band management channel, including:

And transmitting the management control information to the first switch connected to the first data center by using an inband management channel, where the first switch transmits the management control information to an optical transmission device that belongs to different protocols;

The management control information is sent to the third switch connected to the second data center through the inband management channel, and the third switch transmits the management control information to the optical transmission device belonging to different protocols.
The method of claim 1 wherein the first data center is coupled to the first switch and the second switch, the first switch is coupled to the in-band management channel, and the second switch is coupled to the An out-of-band management channel; the second data center is respectively connected to the third switch and the fourth switch, the third switch is connected to the in-band management channel, and the fourth switch is connected to the out-of-band management channel Transmitting management control information through the out-of-band management channel, including:

And transmitting the management control information to the second switch connected to the first data center by using an outband management channel, where the second switch transmits the management control information to an optical transmission device that belongs to a different protocol;

The management control information is sent to the fourth switch connected to the second data center through the outband management channel, and the fourth switch transmits the management control information to the optical transmission device belonging to different protocols.
An optical network management device, comprising:

a memory for storing one or more programs;

a processor, configured to execute the one or more programs, including instructions for: acquiring a state parameter of an in-band management channel, and determining, according to the state parameter, whether the in-band management channel is normal, if And determining to transmit the management control information by using the inband management channel, and if not, determining to transmit the management control information by using the outband management channel;

And a communication interface, configured to send the management control information to the inband management channel, or transmit the management control information to the outband management channel.
An optical transmission system, characterized in that the optical transmission system comprises:

a first data center and a second data center, an optical network management device and an optical transmission device;

The first data center is connected to the optical network management device by using an inband management channel and an outband management channel, where the second data center is connected to the optical network management by using an inband management channel and an outband management channel. And transmitting, by the optical data transmission device and the transmission medium, the optical signal between the first data center and the second data center;

The optical network management device is configured to control the optical transmission device, and obtain a state parameter of the inband management channel, and determine, according to the state parameter, whether the inband management channel is normal, and if yes, pass The in-band management channel transmits management control information, and if not, transmits management control information through the out-of-band management channel.
The optical transmission system according to claim 7, further comprising: a first switch and a second switch connected to said first data center, and a third switch connected to said second data center The fourth switch, wherein

The first switch connects the optical transmission device of the first data center to the optical network management device by using the inband management channel, and the second switch passes the optical transmission device of the first data center Connecting the out-of-band management channel to the optical network management device; and,

The third switch connects the optical transmission device of the second data center to the optical network management device by using the inband management channel, and the fourth switch passes the optical transmission device of the second data center The outband management channel is connected to the optical network management device.
An optical transmission method, comprising:

Obtaining a state parameter of an in-band management channel in the optical transmission system;

Determining that the in-band management channel is in an abnormal state;

Information is transmitted through an out-of-band management channel in the optical transmission system.
The method according to claim 9, wherein the in-band management channel is a channel for managing a network by management control information in a service channel; the out-of-band management channel is managed by a management channel outside the service channel. Information to manage the channels of the network.
The method of claim 9, wherein the optical transmission system comprises at least one optical network device, wherein the optical network device comprises at least two management network ports, wherein the two management network ports have different IP addresses Used to transfer management control information.
An optical transmission method, comprising:

Obtaining state parameters of an out-of-band management channel in the optical transmission system;

Determining that the out-of-band management channel is in an abnormal state;

Information is transmitted through an in-band management channel in the optical transmission system.
The method according to claim 12, wherein the in-band management channel is a channel for managing a network by management control information in a service channel; the out-of-band management channel is managed by a management channel outside the service channel. Information to manage the channels of the network.
An optical transmission system, characterized in that the optical transmission system comprises:

a first data center and a second data center, an optical network management device and an optical transmission device;

The first data center is connected to the optical network management device through an outband management channel, the second data center is connected to the optical network management device through an outband management channel, and the first data center And transmitting, by the optical transmission device and the transmission medium, an optical signal between the second data center and the second data center;

The optical network management device is configured to acquire a state parameter of an inband management channel in the optical transmission system, determine that the inband management channel is in an abnormal state, and transmit information by using an outband management channel in the optical transmission system.
An optical transmission system, characterized in that the optical transmission system comprises:

a first data center and a second data center, an optical network management device and an optical transmission device;

The first data center is connected to the optical network management device by using an inband management channel, the second data center is connected to the optical network management device by using an inband management channel, and the first data center And transmitting, by the optical transmission device and the transmission medium, an optical signal between the second data center and the second data center;

The optical network management device is configured to acquire a state parameter of an out-of-band management channel in the optical transmission system, determine that the out-of-band management channel is an abnormal state, and transmit information by using an in-band management channel in the optical transmission system.
An optical transmission system, comprising:

Optical network management equipment NMS, in-band management channel, out-of-band management channel, optical line side device, and terminal system device;

The optical line side device is connected to the optical network management device by using the inband management channel and the outband management channel; the terminal system device is connected to the inband management channel and the outband management channel to The optical network management device;

The optical network management device is configured to: when the in-band management channel is normal, transmit management control information to the optical line side device and the terminal system device by using the inband management channel; When the channel is in an abnormal state, the management information is transmitted to the optical line side device and the terminal system device through the outband management channel.