CN209930282U - System for automatically protecting data plane link by using control plane link - Google Patents
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Abstract
The utility model relates to a system for utilize control surface link automatic protection data face link, include: the data plane link connected between the exchange boards of the adjacent transmission nodes is used as a main path for service exchange between the transmission nodes; the switching board is connected to the combining module through the bypass channel, a combining link is connected between the combining modules of adjacent transmitting nodes, and the bypass channel and the combining link are used as a standby path for service exchange between the transmitting nodes. The utility model discloses a design transfer node equipment's new construction, then flow the table entry by the controller and establish reserve route for the main route of data face in former control surface link resource, provide the redundant protection to the main route in the data face link, avoided business communication to break off because of the link fault takes place, further improved SDN network communication's reliability.
Description
Technical Field
The utility model belongs to the technical field of communication management facility, in particular to utilize system of automatic protection data face link of control face link.
Background
Software Defined Networking (SDN) technology is a novel Network innovation architecture, and is a way to implement Network virtualization. SDN mainly includes two types of devices: a controller, a transmitting node. The core idea of the SDN architecture is to separate a control plane (control plane) and a data plane (data plane) of a network device, open a programmable control interface for a transfer node, and perform centralized control on the transfer node of the entire network by a controller located in the center, thereby implementing rich new network functions, flexibly controlling and scheduling network resources, and meeting the rapidly developing network requirements. Wherein, the control plane refers to the network interconnection and related control behavior between the controller and the transmission nodes, and the data plane refers to the network interconnection and related data transmission behavior between the transmission nodes. The specific data transmission behavior of the data plane will depend on the specific control behavior of the control plane, and usually the controller controls the data forwarding flow table entry (flow table) by issuing it to the transmission node, and the issuing process may follow some issued protocol standards, such as Openflow protocol, Netconf protocol, OVSDB protocol, and so on. Fig. 1 is a schematic diagram of the overall structure of the SDN.
SDN has two control modes: in-band control and out-of-band control.
Out-of-band control means that a transport node uses an independent control plane port to connect to a controller, and the connection of multiple transport nodes and the controller requires an independent network to operate. Typically, the independent network is implemented using conventional techniques.
However, since the existing SDN technology requires to build an independent control plane network with out-of-band control, such as the structural diagram of the conventional SDN transfer node device shown in fig. 2, the obvious disadvantages are that more network device resources and network link resources need to be invested, and the data plane and the control plane share the related network resources separately, so that the network interconnection between the transfer nodes and the related data transfer capability are directly disabled once the data plane link fails.
Therefore, the traditional SDN architecture needs to be improved, so that the condition that the whole SDN architecture is paralyzed due to data plane link failure is effectively avoided.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a system for automatically protecting a data plane link by using a control plane link, which includes a data plane link connected between switching boards of adjacent transfer nodes as a main path for service exchange between the transfer nodes;
the switching board is connected to the combining module through the bypass channel, a combining link is connected between the combining modules of adjacent transmitting nodes, and the bypass channel and the combining link are used as a standby path for service exchange between the transmitting nodes;
the main control panel in the transmission node is connected with the combining module, and the standby path and the control panel link are combined and connected to the combining link through the combining module.
Preferably, the switch boards include a network port and a bypass port, the switch boards of two adjacent sets of transmission nodes are connected to the data plane link through the network port, the switch boards are connected to the bypass channel through the bypass port, and the bypass channel is connected to the combining module.
Preferably, the switch board includes at least two groups of network ports, and the service data is switched through the network ports.
Preferably, the switch board includes at least two sets of bypass ports, and the bypass ports correspond to the network ports one to one.
Preferably, the network port and the bypass port both use ethernet ports.
Preferably, the combining module includes a photoelectric conversion module, a wavelength division multiplexing module and a combining port, the photoelectric conversion module is connected with the wavelength division multiplexing module, the wavelength division multiplexing module is connected with the combining port, and the combining modules of two adjacent groups of transmission nodes are connected with the combining link through the combining port;
the photoelectric conversion module has a bidirectional function and is used for performing mutual conversion of an optical signal line with a specific wavelength and an electric signal line;
the wavelength division multiplexing module has a bidirectional function and performs mutual conversion between a plurality of optical lines and one optical line.
Preferably, the bypass channel is provided on the back plate.
The beneficial effects of the utility model reside in that:
1. the utility model discloses a design transfer node equipment's new construction, then flow the table entry and establish reserve route for the main route of data face in former control surface link resource under the controller, provide the redundant protection to the main route in the data face link, avoided the business communication to break off because of the link fault takes place, further improved SDN network communication's reliability;
2. in the new structure of the SDN transfer node, the bypass channel is added on the back plate, the newly added bypass port of the exchange plate is connected to the bypass channel on the back plate, and the control port of the main control plate is also changed into the bypass channel with the bypass control port connected to the back plate; secondly, a combining module is added, a photoelectric conversion module and a wavelength division multiplexing module are contained in the combining module, and the bypass channel of the bypass port and the bypass control port can be combined and then transmitted;
3. when the fault detection session reports the fault of the main path, aiming at the one hop with the link fault, the exchange board automatically switches the service data stream to the one hop of the corresponding standby path according to the stream table entry for protection, and the protection switching process does not need the participation of a controller.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Figure 1 shows a schematic diagram of the overall structure of an SDN according to the prior art;
figure 2 shows a conventional SDN transit node device architecture diagram;
FIG. 3 illustrates a system for automatically protecting a data plane link using a control plane link;
fig. 4 illustrates a flow diagram of the present invention for automatically protecting a data plane link using a control plane link;
fig. 5 is a schematic block diagram illustrating that the external control software module of the present invention processes the external control software module according to various inputs and then outputs the Flag of the user _ failure over type group table;
FIG. 6 illustrates an external control software module processing flow diagram of the present invention;
fig. 7 shows the path schematic diagram of the present invention when the reverse switching protection occurs.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A method of automatically protecting a data plane link with a control plane link, comprising:
the method comprises the steps that the controller collects full-network topology information, wherein the full-network topology information comprises transfer node information, network port information and link interconnection information, and the controller collects the full-network topology information based on the SDN basic principle, and the full-network topology information comprises the information of transfer nodes, network ports, link interconnection and the like. In addition, the transmitting node reports bypass port information corresponding to the network port.
Note that both the switch board bypass ports and the network ports are logically ethernet ports, with the difference that the network ports are on the front plane and the bypass ports are connected to backplane bypass paths. Thus, according to SDN philosophy, both bypass ports and network ports may be reported to the controller by the transfer node in the topology collection phase. Only be in the utility model discloses in, transfer node will additionally report the corresponding information of network port and bypass port, for example network port 1 corresponds bypass port 1, and network port 2 corresponds bypass port 2.
Establishing a main path of service exchange between transmission nodes in a data plane link, issuing a data forwarding flow table item to each transmission node through a control plane in a combined link by a controller according to service planning of a user, issuing the data forwarding flow table item to a main control board of each transmission node, and determining the main path of service exchange between switching boards by the main control board according to the data forwarding flow table item; the method comprises the steps that standby paths of service switching are established among transmission nodes, a controller checks network ports used by main paths, and sends down link protection flow table items according to corresponding information of the network ports and bypass ports, the link protection flow table items are sent down to a main control board of each transmission node, the main control board controls a switching board of a network node where the main control board is located according to the link protection flow table items, bypass channels and combined links of the switching board are adopted to establish the standby paths of the service switching, and the main paths of the service switching are subjected to hop-by-hop redundancy protection through the standby paths.
And combining the standby path and the control plane link to construct a combined link, and constructing the combined link by the standby path and the control plane link through a wavelength division multiplexing technology. Specifically, the bypass channel and the main control board of the standby path both perform photoelectric conversion work through the photoelectric conversion module, convert the electrical signal into an optical signal with a specific wavelength for independent transmission, and then combine the optical signal with the specific wavelength for independent transmission through the wavelength division multiplexing module to be transmitted on an optical line and transmit the optical signal to the wavelength division multiplexing module of the adjacent transmission node; the wavelength division multiplexing module of the adjacent station branches a single optical line, divides the single optical line into a plurality of lines according to the wavelength of the optical signal in the single optical line, outputs the lines to the corresponding photoelectric conversion modules, converts the optical signal into an electric signal again through the photoelectric conversion modules, and respectively sends the electric signal to the main control board and the exchange board.
And detecting the link failure conditions of the active path and the standby path. And the controller detects the link fault condition through the link fault detection session for the matching and binding of the main path and the standby path. When the fault detection session reports the fault of the main path, aiming at the one hop with the link fault, the exchange board automatically switches the service data stream to the one hop of the corresponding standby path according to the stream table entry for protection.
As shown in fig. 3, compared to the conventional SDN network, firstly, a bypass channel is added on a backplane, a new bypass port of a switch board is added to access the bypass channel on the backplane, and a control port of a main control board is changed to access the bypass channel on the backplane through a bypass control port; and a combining module is added, the combining module comprises a photoelectric conversion module and a wavelength division multiplexing module, and the combined bypass channel of the bypass port and the bypass control port can be transmitted and then demultiplexed again at a receiving end. The wavelength division multiplexing module can modulate the multiple Ethernet optical signals to different optical wavelengths, and then the multiple Ethernet optical signals are transmitted in the same optical fiber link in a unified manner, the Ethernet optical signals with different wavelengths are not interfered with each other and respectively share sufficient transmission bandwidth, and a receiving end can also decode the multiple Ethernet optical signals from the same optical fiber link. After adding the combining module, the combining module provides a combining port for network interconnection, wherein the network interconnection of the control plane is included.
Explaining a communication mode between two groups of transmission nodes (transmission node X and transmission node X +1), each group of transmission nodes comprises a group of main control board and n groups of exchange boards (n is any positive integer), the main control board is provided with a bypass control port 1 and a bypass control port 2, each group of exchange boards is provided with a bypass port and a network port, the bypass port comprises the bypass port 1 and the bypass port 2, and the network port comprises the network port 1 and the network port 2. The switch boards of two adjacent sets of transfer nodes are correspondingly connected through data plane links, for example, the network port 2 of the switch board 1 of the transfer node X is connected with the network port 1 of the switch board 1 of the transfer node X +1 through a data plane link, and the network port 2 of the switch board n of the transfer node X is connected with the network port 1 of the switch board n of the transfer node X +1 through a data plane link.
The bypass port of the exchange board is connected to the bypass channel arranged on the back board, the bypass control port of the main control board and the bypass channel of the exchange board are both connected to the combining module, and a combining link is established between two groups of adjacent transmission nodes through the combining module. The combining module comprises a photoelectric conversion module, two groups of Wavelength division multiplexing modules (WDM) and two groups of combining ports, a bypass channel and a bypass control port are both connected to the photoelectric conversion module, the photoelectric conversion module is connected with the Wavelength division multiplexing module, and the Wavelength division multiplexing module is connected with the combining link through the combining ports.
Illustratively, a bypass port 2 of a switch board 1 of a transmission node X is connected to a transmission node X +1 sequentially through a bypass channel, a photoelectric conversion module, a wavelength division multiplexing module 2, and a combining port 2 of the transmission node X, and the combining port 2 of the transmission node X is connected to the bypass port 1 of the switch board 1 of the transmission node X +1 sequentially through the combining port 1 of the transmission node X +1, the wavelength division multiplexing module 1, and the photoelectric conversion module, so as to construct a backup path of a main path between the switch board 1 of the transmission node X and the switch board 1 of the transmission node X +1, and perform redundancy protection on the main path. Wherein the backup path between the switch board 1 of the transfer node X and the switch board 1 of the transfer node X +1The photoelectric conversion module carries out Ethernet electric signals and the wavelength is lambda1Of optical signals of wavelength lambda1The optical signals are combined in the combined link through the wavelength division multiplexing module for transmission, and the combined optical signals are separated through the wavelength division multiplexing module and transmitted to the corresponding port of the photoelectric conversion module. Similarly, the bypass port 2 of the switch board n of the transmission node X is connected to the transmission node X +1 sequentially through the bypass channel, the photoelectric conversion module, the wavelength division multiplexing module 2, and the combining port 2 of the transmission node X is connected to the bypass port 1 of the switch board 1 of the transmission node X +1 sequentially through the combining port 1 of the transmission node X +1, the wavelength division multiplexing module 1, and the photoelectric conversion module, so as to construct a backup path of the main path between the switch board 1 and the switch board 2, and perform redundancy protection on the main path. Wherein, the spare path between the switch board n of the transmission node X and the switch board n of the transmission node X +1 carries out Ethernet electrical signals and wavelength lambda through the photoelectric conversion modulenOf optical signals of wavelength lambdanThe optical signals are combined in the combined link through the wavelength division multiplexing module for transmission, and the combined optical signals are separated through the wavelength division multiplexing module and transmitted to the corresponding port of the photoelectric conversion module.
Two groups of bypass control ports of the main control board are connected to the combining module and are accessed into the combining link with the adjacent transmission node through the combining module. Illustratively, the bypass control port 2 of the main control board of the transmission node X is connected to the combining port 1 of the transmission node X +1 through the photoelectric conversion module, the wavelength division multiplexing module 2 and the combining port 2, and is connected to the bypass control port 1 of the main control board of the transmission node X +1 through the wavelength division multiplexing module 1 of the transmission node X +1 and the photoelectric conversion module in sequence. The Ethernet electric signals and the wavelength of lambda are carried out between the main control board of the transmission node X and the main control board of the transmission node X +1 through the photoelectric conversion module0Of optical signals of wavelength lambda0The optical signals are combined in the combined link through the wavelength division multiplexing module for transmission, and the combined optical signals are separated through the wavelength division multiplexing module and transmitted to the corresponding port of the photoelectric conversion module.
The present invention provides a control method for a system for automatically protecting a data plane link by using a control plane link, as shown in fig. 4, which is a flowchart for automatically protecting a data plane link by using a control plane link.
Step 1: the controller collects full-network topology information based on the basic principle of the SDN, wherein the full-network topology information comprises information of transmission nodes, network ports, link interconnection and the like. In addition, the transmitting node reports bypass port information corresponding to the network port.
Note that both the switch board bypass ports and the network ports are logically ethernet ports, with the difference that the network ports are on the front plane and the bypass ports are connected to backplane bypass paths. Therefore, according to the basic principle of SDN, they may all be reported to the controller by the transmitting node in the topology collection stage, except that the transmitting node additionally reports information corresponding to network ports and bypass ports, for example, network port 1 corresponds to bypass port 1, and network port 2 corresponds to bypass port 2.
Step 2: the controller sends down data forwarding flow list items to each transmission node through a control plane in the combined link according to the service planning of the user, and establishes a main path in a data plane for the service.
That is, the controller issues the data forwarding flow table entry to the main control board through the link-closing link, and issues control to the corresponding switch board through the main control board to control the switch board between the adjacent transfer nodes to establish the main path for service transmission. Illustratively, the controller issues the data forwarding flow entry to the main control board of the transfer node X and the main control board of the transfer node X +1 through the control plane in the combining link. The master control board of the transfer node X controls the network port 2 of the switch board 1 of the transfer node X to be a communication port of the switch board 1 of the transfer node X and the switch board 1 of the transfer node X +1, and the master control board of the transfer node X +1 controls the network port 1 of the switch board 1 of the transfer node X +1 to be a corresponding communication port for communicating with the switch board 1 of the transfer node X, thereby establishing the primary path of the switch board 1 of the transfer node X and the switch board 1 of the transfer node X + 1. Similarly, the master control board of the transfer node X controls the network port 2 of the switch board n of the transfer node X to be a communication port of the switch board n of the transfer node X and the switch board n of the transfer node X +1, and the master control board of the transfer node X +1 controls the network port 1 of the switch board n of the transfer node X +1 to be a corresponding communication port for communicating with the switch board n of the transfer node X, thereby establishing the primary path of the switch board n of the transfer node X and the switch board n of the transfer node X + 1.
And step 3: the controller checks each network port used by the main path, issues a link protection flow table entry according to the corresponding information of the network port and the bypass port, creates a standby path by using the bypass channel and the combined link, and performs hop-by-hop redundancy protection on the main path.
The main path may include single-hop behavior or multi-hop behavior, and the standby path performs standby protection on hop-by-hop. For example, in fig. 3, for a hop of the network port 1 of the switch board 1 which is transmitted to the transmission node x +1 and is transmitted from the network port 2 of the switch board 1 of the transmission node x in the active path, a corresponding hop in the standby path is: the combining port 1 of the combining module transmitted to the transmitting node x +1 is sent from the bypass port 2 of the switching board 1 of the transmitting node x through the bypass channel and the combining port 2 of the combining module, and then through the bypass channel and the bypass port 1 of the switching board 1. As shown in fig. 7.
And 4, step 4: the controller configures and binds corresponding link fault detection sessions for a main path and a standby path of a service, and the link fault detection can be based on an Operation Administration and Maintenance (OAM) protocol monitoring mechanism.
And 5: when the fault detection session reports the fault of the main path, the exchange board automatically switches the service data stream to the corresponding one-hop of the standby path according to the stream table entry for protection aiming at the one-hop with the link fault. The protection cut-back process does not require the involvement of a controller.
Fig. 7 is a schematic diagram of a path in the event of fail-over protection. Assuming that a link failure occurs in a hop, which is sent from the network port 2 of the switch board 1 of the transfer node x to the network port 1 of the switch board 1 of the transfer node x +1 in the primary path, and the failure detection session reports failure information to the switch board, the switch board automatically switches the hop of the service data stream to a corresponding hop in the following standby paths according to the configuration of the data forwarding stream entry and the link protection stream entry: the combining port 1 of the combining module transmitted to the transmitting node x +1 is sent from the bypass port 2 of the switching board 1 of the transmitting node x through the bypass channel and the combining port 2 of the combining module, and then through the bypass channel and the bypass port 1 of the switching board 1.
The controller creates a backup path for the primary path by issuing a link protection flow table entry, and the switch board automatically switches the service data stream to a corresponding one-hop of the backup path for protection according to the flow table entry for the one-hop with the link failure, wherein an embodiment of a specific implementation technology is as follows: a new type group table is added to the OpenFlow protocol by referring to a fast _ failover type group table (group table) in the SDN OpenFlow standard flow table protocol (version 1.1 and above), which is referred to as a user _ failover type group table in this embodiment. Similar to the fast _ failover type group table is: both the fast _ failover type group table and the user _ failover type group table support carrying a plurality of action buckets (action buckets), and can determine which action bucket should be executed currently according to a certain criterion. Unlike the fast _ failover type group table, this is: the fast _ failover type group table mainly supports the selection and execution of the action bucket according to the port fault condition, and the user _ failover type group table expands the fault type into the fault type which can be defined by external software and can be selected and executed according to the fault type.
As shown in Table 1, the group table entry of the user _ failure Type group table is shown, the Type of the group table entry is extended user _ failure, and each action bucket contains a Watch _ failure entry for specifying the detected failure location and event. In this example, the action bucket 1 corresponds to the primary path (issued from the network port 2 of the switch board 1 of the transfer node x), and the action bucket 2 corresponds to the backup path (issued from the bypass port 2 of the switch board 1 of the transfer node x). The Watch _ failure content of the action bucket 1 is that the data plane link is detected to be normal, when the data plane link has no fault, the group table selects to execute the action bucket 1, namely, to forward the data stream to the network port 2 of the switch board 1 with the Out _ port as the transmission node x, and then to enter the main path. The fetch _ failure content of the action bucket 2 is that a data plane link failure is detected, and when the failure is detected, the group table selects to execute the action bucket 2, that is, to forward the data stream to the bypass port 2 of the switch board 1 whose Out _ port is the transfer node x, and to enter the backup path.
Table 1user _ failover type group table group entry (extension mode one)
Since the Openflow group table sequentially checks whether the fetch _ failure content is satisfied according to the order of the action buckets, the action bucket 1 (primary path) is always preferentially used in the group table expansion mode. When the main path is failed, the data flow is automatically switched back to the action bucket 2 (standby path) according to the group table, and when the main path is recovered, the data flow is automatically switched back to the main path according to the sequence of the action bucket.
In some application scenarios, more diversified requirements may be provided for the main/standby path switching manner, for example:
1. when a main path fails, a user parameter 'automatic reverse switch' is checked, if the switch is turned on, the data stream is reversely switched to a standby path, otherwise, the reverse switch does not occur automatically;
2. when the primary path is recovered after failure, the data stream is required to Wait for a certain time and then is switched back to the primary path, and the time is called 'delayed switching time' (Wait _ to _ reverse time);
3. when the primary path is recovered after the failure, the data stream is not necessarily switched back to the primary path, but is determined to be switched back to the primary path or stay on the standby path according to the 'switching performance' (switching) of a user parameter switch;
4. the user is required to manually send out an instruction, wherein the manually specified data stream is forced to be switched back to the main Path or the standby Path, and the instruction is called a Manual reverse to main/standby Path (Manual reverse to work/Protect Path) instruction.
At this time, another embodiment may be taken as: as shown in table 2, the set table entry of the user _ failure type set table in the second extension manner is shown, where the Watch _ failure is replaced by a Watch _ Flag, that is, whether the action bucket is executed is no longer determined according to the failure, but the Flag corresponding to the action bucket is checked, where the Flag is 1, the action bucket is executed, and the Flag is 0, the action bucket is not executed. The Flag can be set by an external control software module, the diversified requirements can be realized by adding more logics in external software, and the flexibility of the function is greatly improved.
Table 2user _ failover type group table set entry (extension type two)
A schematic block diagram of the external control software module outputting the Flag of the user _ failover type group table after processing according to various inputs is shown in fig. 5: the input event of the external control software comprises detection of data link failure and detection of data link recovery, the input parameters of the external control software module comprise an automatic reverse switch, delayed reverse time and turnover, the instruction input of the external control software comprises manual reverse switching to a main path and manual reverse switching to a standby path, the external control software module determines output setting of a user _ failover type group table through the input, and the user _ failover type group table comprises Flag1 and Flag 2.
Fig. 6 shows a processing flow chart of the external control software module with diversified requirements, where Flag1 is set to 1, Flag2 is set to 0 to represent selection of the active path, and Flag1 is set to 0, and Flag2 is set to 1 to represent selection of the standby path.
When Flag1 is set to 1 and Flag2 is set to 0, judging whether manual reverse switching is carried out to the standby path or not, and if the manual reverse switching is judged to be carried out to the standby path, carrying out the operations of setting Flag1 to 0 and setting Flag2 to 1; if Flag1 is set to 1 and Flag2 is set to 0, judging that the backup path is not manually switched backwards, and detecting whether the data link fails; when the data link is detected to be in failure, whether the automatic reversing switch is opened or not is detected, and when the automatic reversing switch is detected to be opened, the operations of setting 0 to Flag1 and setting 1 to Flag2 are carried out.
After Flag1 is set to 0 and Flag2 is set to 1, whether manual reverse switching to the main path is executed or not is judged; when the manual reverse switching to the main path is judged, the operations of setting Flag1 to 1 and setting Flag2 to 0 are executed, and when the manual reverse switching to the main path is judged not to be carried out, whether the data link is recovered to be normal is detected; when the data link is detected not to be restored to normal, the operations of setting Flag1 to 0 and setting Flag2 to 1 are executed again, and when the data link is detected to be restored to normal, whether the automatic reverse switch is turned on or not is detected; after detecting that the automatic reverse switch is not turned on, the operations of Flag1 set 0 and Flag2 set 1 are executed again, and after detecting that the automatic reverse switch is turned on, whether the reversibility is 1 is detected; when the invertibility is not 1, the operations of setting Flag1 to 0 and setting Flag2 to 1 are executed again, and when the invertibility is detected to be 1, whether the delayed inversion time is 0 or not is detected; when the delayed backspace time is detected to be 0, the operations of setting 1 of Flag1 and setting 0 of Flag2 are executed, and when the delayed backspace time is detected not to be 0, the corresponding time is waited, and the operations of setting 1 of Flag1 and setting 0 of Flag2 are executed.
In a conventional SDN, a controller issues a data forwarding flow entry to a main control board of a transfer node through a control plane, and the main control board configures the data forwarding flow entry into a switch board to control a data transfer behavior of the switch board on a data plane, such as a single-hop behavior of a specific service: the service data stream is sent out from the network port 2 of the switch board 1 of the transfer node x and is transferred to the network port 1 of the switch board 1 of the transfer node x + 1; when a plurality of single-hop behaviors of the service are specified to form a multi-hop behavior, a transmission path (path) of the service in the SDN is specified.
The utility model discloses in, when the controller issued data forwarding flow table item for the business and established transfer path, also issued corresponding link protection flow table item, establish reserve route in former control surface link resource (now for combining the way link), utilize control surface link resource to provide the redundant protection to the main route in the data surface link.
Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. A system for automatically protecting a data plane link by using a control plane link is characterized by comprising the data plane link connected between switching boards of adjacent transmission nodes and used as a main path for service exchange between the transmission nodes;
the switching board is connected to the combining module through the bypass channel, a combining link is connected between the combining modules of adjacent transmitting nodes, and the bypass channel and the combining link are used as a standby path for service exchange between the transmitting nodes;
the main control panel in the transmission node is connected with the combining module, and the standby path and the control panel link are combined and connected to the combining link through the combining module.
2. The system of claim 1, wherein the switch boards include network ports and bypass ports, the data plane links are connected between the switch boards of two adjacent sets of the transport nodes through the network ports, the switch boards are connected to the bypass channels through the bypass ports, and the bypass channels are connected to the combining module.
3. The system of claim 2, wherein the switch board includes at least two sets of network ports through which traffic data is exchanged.
4. The system of claim 3, wherein the switch board includes at least two sets of bypass ports, the bypass ports corresponding one-to-one to the network ports.
5. The system for automatically protecting a data plane link using a control plane link of claim 2 wherein the network port and the bypass port are both ethernet ports.
6. The system according to any of claims 1 to 5, wherein the combining module comprises a photoelectric conversion module, a wavelength division multiplexing module and a combining port, the photoelectric conversion module is connected to the wavelength division multiplexing module, the wavelength division multiplexing module is connected to the combining port, and the combining modules of two adjacent sets of transmission nodes are connected to the combining link through the combining port;
the photoelectric conversion module has a bidirectional function and is used for performing mutual conversion of an optical signal line with a specific wavelength and an electric signal line;
the wavelength division multiplexing module has a bidirectional function and performs mutual conversion between a plurality of optical lines and one optical line.
7. The system of any of claims 1 to 5, wherein the bypass channel is disposed on a backplane.
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| CN201920565099.8U Active CN209930282U (en) | 2019-04-23 | 2019-04-23 | System for automatically protecting data plane link by using control plane link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110113258A (en) * | 2019-04-23 | 2019-08-09 | 北京全路通信信号研究设计院集团有限公司 | A kind of method and system using control plane chain circuit automatic protection data surface link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110113258A (en) * | 2019-04-23 | 2019-08-09 | 北京全路通信信号研究设计院集团有限公司 | A kind of method and system using control plane chain circuit automatic protection data surface link |
| CN110113258B (en) * | 2019-04-23 | 2024-03-26 | 北京全路通信信号研究设计院集团有限公司 | Method and system for automatically protecting data surface link by using control surface link |
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