CN114039833A - Industrial Internet multi-domain integration architecture based on SRv6 - Google Patents
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Abstract
The invention discloses an SRv 6-based industrial internet multi-domain integration architecture, which comprises a network construction (an SMA structure and corresponding nodes); performing active periodic detection through nodes of an intra-domain controller and performing passive feedback identification on faults through SMA nodes, positioning the fault nodes and detecting the network state, and generating a fault node set CFN; generating a credible node set SNTS after a fault node and a malicious node are discharged through a fault detection module, and then generating a transmission path by each SMA node based on a Bellman-Ford hop number constraint algorithm; the SNTS tables are controlled to be issued by the intra-domain controller and the inter-domain controller respectively so as to realize the transmission control of different practical situations. The industrial internet multi-domain integration architecture based on SRv6 is superior to the existing industrial internet network structure in the aspects of fault node troubleshooting efficiency, network throughput and data communication overhead, and can better adjust network load balance.
Description
Technical Field
The invention belongs to the industrial Internet technology, and particularly relates to an SRv 6-based industrial Internet multi-domain integration architecture.
Background
With the rise and development of big data, cloud computing and new networks, the research and actual construction of the industrial internet technology are more and more, but at present, many problems are faced, especially in terms of network systems, the existing industrial internet is less deployed in enterprises, the data centers of the enterprises are less cloudy, and the network structure becomes more complex with the increase of the industrial production scale.
The enterprise data center is deployed on an industrial cloud platform to generate mass data, and the mass data generation and the big data processing have good data transmission and acquisition capacity on the premise, so that an industrial internet with higher expansibility is required to support the development of an industrial network structure.
The network system is one of three major systems of an industrial internet architecture, and is a necessary condition for further research and development. However, the current conventional TCP/IP protocol is not enough to support the scalability of the network system when used in a system having a huge industrial network. In practical industrial services, some critical industrial services may require a strict quality of service QoS. The existing industrial network adopts the TCP/IP protocol of the traditional network, and is likely to encounter the situations of flow congestion, packet loss and the like, and is likely to have larger end-to-end delay. In the aspect of network transmission of data, a control plane and a data plane of network equipment are separated by using a Software Defined Network (SDN), data forwarding is flexibly controlled, data transmission efficiency is improved, and data attack is effectively resisted. However, SDN networks based on the OpenFlow protocol have a certain network efficiency due to distributed resource allocation based on multi-protocol label switching service engineering (MPLS-TE). In addition, in a conventional centralized SDN network, due to large transmission and calculation overhead, a controller node easily causes a single point of failure of the network.
The number of forwarding devices deployed on the industrial internet is also large. When a key node fails, the delay of the data transmission of the whole network is easily caused. If troubleshooting is performed manually in a large-scale industrial internet, the workload is large. In actual industrial production, the occurrence of node failure is a real problem, so that the failure of a failed node in the industrial internet must be efficiently and accurately cleared.
To sum up, the current industrial internet faces three challenges:
(1) a network with good scalability is needed to face massive industrial data transmission and industrial cooperation between different enterprises and industries.
(3) The utilization rate of network resources needs to be improved, and the problem of low network communication efficiency caused by the existing SDN based on the MPSL is solved.
(4) Accurate troubleshooting and efficient reliable path generation are required in actual industrial production.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the defects in the prior art, provides an SRv 6-based industrial internet multi-domain integration architecture, and solves the practical problems of low network expansibility, inconvenience in troubleshooting, low data transmission efficiency and the like of the industrial internet in the aspect of network systems.
The technical scheme is as follows: the invention discloses an SRv 6-based industrial internet multi-domain integration architecture method, which comprises the following steps:
s101, constructing a network, namely constructing an SMA structure and corresponding nodes;
the SMA structure is provided with a core controller and a plurality of SMA domains, each SMA domain is provided with a corresponding SMA node, an intra-domain controller and a BGP gateway router, the SMA nodes of the same SMA domain use the same SR global block SRGB, and the intra-domain controller and the core controller are communicated through the BGP gateway router; the core controller knows IPv6 of all SMA nodes and generates segment identification SID to send to each SMA node;
s102, fault detection, namely, carrying out active periodic detection through an intra-domain controller node and carrying out passive feedback identification on a fault through an SMA node, positioning the fault node and detecting a network state, and generating a fault node set CFN so as to be used for generating a forwarding path;
s103, path generation, namely generating a credible node set SNTS after a fault node and a malicious node are discharged through a fault detection module, and then generating a transmission path by each SMA node based on a Bellman-Ford hop number constraint method BF-TN, so that long-path forwarding is effectively avoided, and the utilization rate of network resources is improved;
and S104, data transmission, namely, controlling the issuing of the SNTS table by the intra-domain controller and the inter-domain controller (namely, the core controller) respectively to realize the transmission control of different practical situations.
The multi-layer controller is arranged on the basis of the SMA structure, the function of generating a transmission path by a traditional SDN controller is realized by the SMA node, and high network expansibility and high-efficiency data transmission of the industrial internet are realized; during intra-domain communication, the reference SNTS is issued by the intra-domain controller, and when a fault occurs in the real-time communication process, the step S102 is executed, and the SMA node passively feeds back the fault to the intra-domain controller; during inter-domain communication, the SMA node refers to the SNTS defined by the core controller, and when a communication fault occurs, step S102 is executed, and the SMA node sends the SNTS to the core controller through the intra-domain controller.
The SMA structure is a multi-level core network consisting of SRv 6-based nodes and SDN controller nodes, an SR global block SRGB in the SMA structure refers to an address set representing a global section, a fault node set CFN is removed through the SRGB to obtain a set of non-fault nodes, and meanwhile, passive feedback of the SMA nodes responds to malicious nodes in the network in real time; and after the SRGB eliminates the fault node and the malicious node, generating an SMA node credible set SNTS and issuing the SNTS to each SMA node.
Further, the core controller in the SMA structure accepts the SNTS of the intra-domain controller of each SMA domain; after the core controller comprehensively updates the total SNTS, the updated SNTS is sent to each SNTS according to the SRv6 protocolBetween domainsA controller (i.e., core controller);
the specific working contents of the intra-domain controller comprise: 1) uploading data to each SMA node in the core controller domain; 2) receiving and updating summary node information of a core controller for inter-domain transmission, 3) sending a probe to actively detect the state of nodes in a domain, quickly positioning a fault node, 4) receiving statistical information of fault node information passively fed back by an SMA node in a real-time communication process, updating a node information table, and 5) sending a credible node set SNTS to the SMA nodes in each SMA domain;
the SMA node performs operations including: 1) receiving and regularly updating a node information table; 2) generating a corresponding forwarding mode and path according to the SNTS when the bottom layer data stream has a forwarding requirement; 3) and receiving forwarding verification of the previous hop node data in the real-time communication process and reporting the exception to a controller in the domain.
The BGP gateway router of the invention has the capability of carrying out communication based on IPv6 protocol, the data communication between the core controller and the intra-domain controller needs to pass through the BGP gateway, and when the SMA node forwards the data, the data on the data plane also needs to pass through the BGP gateway
Further, the step of actively detecting by the controller within the domain comprises:
when the controller in the SMA domain starts to actively detect, setting a time period of T milliseconds, sending UDP detection in each period at regular time, regarding a given time period T, if no detection is received within 2T milliseconds, considering that the detection period is overtime, and under the state, the controller in the domain sends a detection to each SMA node to determine a fault point;
the information of the active detection nodes and each segment is determined by RGB sent by the controller in the domain; the actual physical network topology is defined as a weighted graph G ═ V, E >, where V denotes the set of all segments in SRGB, E denotes the connection between the sets of segments, the intra-domain controller of the SMA domain will actively detect all objects in E with a period of T, and the detection result will have the following two kinds of feedback:
1) for each edge (namely link) E ∈ E, if the intra-domain controller actively detects overtime, the intra-domain controller detects each node V ∈ V to determine a fault node;
2) for each edge E belongs to E, if the intra-domain controller actively detects successfully, the intra-domain controller records the path weight, and the weight parameter definition refers to the specification;
after active detection of the SMA controller, two data will be obtained:
1) weighting the path weight w (e) of each edge in the graph G;
2) and collecting fault sections and fault nodes in the fault node collection CFN of the SMA.
Further, the step of the SMA node passive feedback includes:
during data transmission of the SMA, if a transmission node fails to check data, the transmission node reports an error to a corresponding controller in real time, for example, data is transmitted from the SMA1 to the SMA2, and the SMA1 is an upstream router of the SMA 2. If the SMA2 is unable to verify the packet, the SMA1 is considered to be a router anomaly and the SMA2 will inform the controller to discover that the SMA1 is behaving abnormally.
Further, the data transmission includes communication within the same SMA domain and communication between different SMA domains: the method realizes the function of generating the intra-domain communication transmission path by the traditional SDN controller by the SMA node, and controls inter-domain communication by the core controller.
The specific content of intra-domain communication is as follows: and each SMA node receives and regularly updates the node information table SNTS, and when the SMA bottom layer router has a forwarding requirement, the SMA node generates a corresponding forwarding path according to BF-TN so as to carry out network communication.
The specific content of inter-domain communication is as follows: in the SMA cross-domain process based on SRv6-BE, all head and tail nodes in SMA nodes support SRv6, other boundary routing equipment can not support SRv6, and only IPv6 forwarding is supported; in the network condition based on the public network IPv6, the physical network externally connects with a top controller; the controllers in each domain are respectively controlled by the top layer controller, and the network topology of the network data control layer is a star structure.
Further, the specific method for generating the transmission path is as follows:
defining Mi (S, D) as the minimum jump path between the source node S and the destination node D in order to limit the length of the generated path;
let Ma (S, D) be the maximum number of hops tolerable between the source node S and the destination node D, nods (g) be defined as the total number of nodes, α being the maximum path length adjusted by the number of network nodes in a particular case;
Ma(S,D)＝Nods(G)α+Mi(S,D)(1-α)，0<α<1
and then according to the input of SNTS, S, D and Ma (S, D), obtaining a corresponding S-to-D data transmission path after Ma (S, D) times of relaxation.
The algorithms for generating the transmission paths have temporal and spatial complexities of O (V × Ma (S, D)) and O (V), respectively. The temporal complexity is better than Dijkstra's algorithm, FloydWarshall's algorithm, or any other such shortest path algorithm.
Has the advantages that: compared with the prior art, the invention has the following advantages:
(1) the SMA structure of the invention is provided with a core controller for managing and controlling the nodes and the controllers of each SMA domain, which is convenient for management, maintenance and fault removal in practical application, and each domain is provided with a controller which can safely communicate with a centralized controller.
(2) The industrial internet multi-domain integrated architecture is provided with the multi-layer controller so as to realize cross-domain communication in the industrial internet. The function of generating a transmission path by the traditional SDN controller is realized by the SMA node, and high network expansibility and efficient data transmission of the industrial internet are realized.
(3) The method can effectively position the fault node and detect the network state at the same time, and can quickly and accurately identify the fault node collection CFN in the SMA through the periodic detection actively sent by the node of the domain controller and the passive feedback of the SMA node.
(4) The invention generates the corresponding path based on the Bellman-Ford hop number constraint algorithm of the total number of the SNTS nodes, and can effectively avoid long-path forwarding and improve the utilization rate of network resources for generating a high-efficiency and reliable data plane transmission path in SMA.
(5) The method and the device can perform fault node troubleshooting in real time, update the SNTS (single-threaded transport stream) of the credible node collection to generate a reliable path, and ensure stable and efficient communication of the network.
Drawings
FIG. 1 is a schematic overall flow diagram of the present invention;
FIG. 2 is an overall architecture diagram of the present invention;
FIG. 3 is a flow chart of SNTS generation by active detection in combination with passive feedback in the present invention;
FIG. 4 is a flow chart of a BF-TN algorithm generation path in the present invention;
fig. 5 is a schematic diagram of inter-domain communication in the embodiment.
Detailed Description
The technical solution of the present invention is described in detail below, but the scope of the present invention is not limited to the embodiments.
As shown in fig. 1, the SRv 6-based industrial internet multi-domain integration architecture method of the embodiment includes the following steps:
s101, constructing a network as shown in FIG. 2, namely constructing an SMA structure and corresponding nodes;
the SMA structure is provided with a core controller and a plurality of SMA domains, each SMA domain is provided with a corresponding SMA node, an intra-domain controller and a BGP gateway router, the SMA nodes of the same SMA domain use the same SR global block SRGB, and the intra-domain controller and the core controller are communicated through the BGP gateway router; the core controller knows the IPv6 of all the SMA nodes and generates SID to send to each SMA node.
The SR global block SRGB refers to an address set representing a global segment, a fault node set CFN is removed through the SRGB to obtain a set of non-fault nodes, and meanwhile, passive feedback of the SMA nodes responds to malicious nodes in a network in real time; and after the SRGB eliminates the fault node and the malicious node, generating an SMA node credible set SNTS and issuing the SNTS to each SMA node.
A core controller in the SMA structure receives the SNTS of the intra-domain controller of each SMA domain; after the core controller comprehensively updates the total SNTS, the updated SNTS is sent to each SNTS according to the SRv6 protocolBetween domainsAnd a controller. The specific working contents of the intra-domain controller comprise: 1) uploading data of each node in the core controller domain; 2) receiving and updating summary node information of a core controller for inter-domain transmission, 3) sending a probe to actively detect the state of nodes in a domain, quickly positioning a fault node, 4) receiving statistical information of fault node information passively fed back by an SMA node in a real-time communication process, updating a node information table, and 5) sending the node table to the SMA nodes in each SMA domain. The SMA node performs operations including: 1) receiving and regularly updating a node information table; 2) generating a corresponding forwarding mode and a corresponding path according to the node information table when the underlying data flow has a forwarding requirement; 3) and receiving forwarding verification of the previous hop node data in the real-time communication process and reporting the exception to a controller in the domain.
And S102, fault detection, namely, carrying out active periodic detection through the nodes of the controllers in the domain and carrying out passive feedback identification on the fault through the SMA nodes, positioning the fault nodes, detecting the network state and generating a fault node set CFN.
Wherein the step of intra-domain controller active probing comprises: when the controller in the SMA domain starts to actively detect, a time period of T milliseconds is set, UDP detection is sent in each period at regular time, for a given time period T, if no detection is received within 2T milliseconds, the time period is considered to be overtime, and in this state, the controller in the domain sends a detection for each segment to determine a fault segment.
The information of the active detection node and each segment is determined by RGB sent by the controller; the actual physical network topology is defined as a weighted graph G ═ V, E >, where V denotes the set of all segments in SRGB, E denotes the connection between the sets of segments, the intra-domain controller of the SMA domain will actively detect all objects in E with a period of T, and the detection result will have the following two kinds of feedback:
1) for each edge (namely link) E ∈ E, if the intra-domain controller actively detects overtime, the intra-domain controller detects each node V ∈ V to determine a fault node;
2) for each edge E belongs to E, if the intra-domain controller actively detects successfully, the intra-domain controller records the path weight, and the weight parameter definition refers to the specification;
after active detection of the SMA controller, two data will be obtained:
1) weighting the path weight w (e) of each edge in the graph G; q (e) represents the total flow carried by link e, and s (e) represents the remaining bandwidth of link e. Defining w (e) q (e) s (e) as a weight, expressed as the congestion index of link e;
2) and collecting fault sections and fault nodes in the fault node collection CFN of the SMA.
The present embodiment defines Mi (S, D) as the minimum hop path between the source node S and the destination node D. Furthermore, the longer the path, the more expensive the total amount of network resources consumed. Therefore, let Ma (S, D) be the maximum number of hops that can be tolerated between the source node S and the destination node D, as shown in equation 1. Nods (g) is defined as the total number of nodes in the graph, and a may be adjusted by the number of network nodes in a particular case to adjust the maximum path length.
Ma (S, D) ═ nods (g) α + Mi (S, D) (1- α),0< α <1, formula 1
The specific process is as follows:
the step of the passive feedback of the SMA node comprises the following steps:
in the data transmission process of the SMA, if the transmission node fails to check the data, the transmission node reports the error to the corresponding controller in real time.
S103, path generation, namely generating a credible node set SNTS after the fault nodes and the malicious nodes are discharged through the fault detection module, and then generating a transmission path by each SMA node based on a Bellman-Ford hop number constraint algorithm (BF-TN).
And S104, data transmission, namely, controlling the SNTS tables to be issued by the intra-domain controller and the inter-domain controller respectively so as to realize transmission control under different practical conditions. The specific content of intra-domain communication is as follows: and each SMA node receives and regularly updates the node information table SNTS, and when the SMA bottom layer router has a forwarding requirement, the SMA node generates a corresponding forwarding path according to BF-TN so as to carry out network communication.
The specific content of inter-domain communication is as follows: in the SMA cross-domain process based on SRv6-BE, the head and tail nodes all support SRv6, other boundary routing equipment can not support SRv6, and only IPv6 forwarding is supported; in the network condition based on the public network IPv6, the physical network externally connects with a top controller; the controllers in each domain are respectively controlled by the top layer controller, and the network topology of the network data control layer is a star structure.
Example 1:
the specific steps of this embodiment are:
s101: according to actual network requirements, various nodes of the industrial internet multi-domain integrated architecture SMA are deployed according to the scheme shown in FIG. 2.
S102: according to the actual network topology in fig. 2, through periodic detection actively sent by the nodes of the controller in the domain and passive feedback of the SMA node, fast troubleshooting of the failed node is performed, and an SMA node trust set SNTS for a forwarding path is generated.
The network topology G ═ V, E > in this embodiment, where V denotes a set of all segments in SRGB, and E denotes a connection between segment sets; the controller in the SMA domain will actively detect all objects in E with a period of T. The detection result has the following two feedbacks:
for each edge E, if the controller actively detects a timeout, the controller detects each node V E V to determine a failed node.
For each edge E, if the controller actively detects successfully, the controller records the path weight. The weight parameter is defined according to the specification.
After active detection of the SMA controller, two data will be obtained: and (3) collecting the path weight of each edge in the graph G and the fault section and the fault node in SMA (CFN).
As shown in fig. 3, in the actual data transmission process of the SMA, if the data verification of the transmission node fails, the transmission node reports an error to the controller in real time. If data is transmitted from the SMA1 to the SMA2, then the SMA1 is upstream of the SMA2 router. After the link changes, the upstream SMA1 node cannot forward the compliant packet, and therefore the SMA2 cannot receive the compliant packet. If the SMA2 cannot verify the data packet, the SMA1 is considered to be abnormal, and the SMA2 informs the controller of the abnormal behavior of the SMA 1; this can effectively eliminate failures caused by link changes.
S103: in order to generate an efficient and reliable data plane transmission path in SMA, according to SMA nodes in a domain, a long path forwarding is effectively avoided based on a Bellman-Ford algorithm of SNTS node total number (BF-TN) hop number constraint.
In this embodiment, assuming that Ma (S, D) is 5, that is, the hop count is limited to 5, the constraint of 5 hops is used to obtain a path by using the BF-TN algorithm. After 5 times of relaxation algorithm, P (D, j) is obtained, and a forwarding path is obtained from the backtracking of D according to P (D, j). The specific process is shown in algorithm 1.
S104: as shown in fig. 4, if one transmission path P (SMA1, SMA2, SMA3) is generated at the node of SMA1, SMA1 and SMA2 belong to the same domain, and SMA3 belongs to the other domain. The actual data plane forwarding is shown in fig. 4. In the cross-domain transmission, the SMA2 transmits the DataPacket to the SMA3 through the BGP router supporting the IPv6, thereby implementing the entire path of data transmission.
It can be seen from the above embodiments that, in the SRv 6-based industrial internet multi-domain integration architecture of the present invention, different from the conventional industrial internet structure, the multi-layer controller is deployed based on SMA, and the SDN controller generating the transmission path is replaced by the SMA node, so as to implement high-efficiency network scalability and high-efficiency data transmission of the industrial internet. In the aspect of automatic fault detection, a fault node in the SMA can be quickly and accurately identified through periodic detection actively sent by a controller node in a domain and passive feedback of the SMA node. In the aspect of path generation, a hop count constraint algorithm (BF-TN) based on the total number of SNTS nodes is used, long path forwarding is effectively avoided, and the utilization rate of network resources is improved.
In short, the SRv 6-based industrial internet multi-domain integration architecture of the invention is superior to the existing industrial internet network structure in terms of fault node troubleshooting efficiency, network throughput and data communication overhead, and can better adjust network load balance.
Claims (7)
1. An SRv 6-based industrial internet multi-domain integration architecture, characterized in that: the method comprises the following steps:
s101, constructing a network, namely constructing an SMA structure and corresponding nodes;
the SMA structure is provided with a core controller and a plurality of SMA domains, each SMA domain is provided with a corresponding SMA node, an intra-domain controller and a BGP gateway router, the SMA nodes of the same SMA domain use the same SR global block SRGB, and the intra-domain controller and the core controller are communicated through the BGP gateway router; the core controller knows IPv6 of all SMA nodes and generates segment identification SID to send to each SMA node;
s102, fault detection, namely, carrying out active periodic detection through nodes of controllers in the domain and carrying out passive feedback identification on faults through SMA nodes, positioning the fault nodes and detecting the state of a network, and generating a fault node set CFN;
s103, path generation, namely generating a credible node set SNTS after a fault node and a malicious node are discharged through a fault detection module, and then generating a transmission path by each SMA node based on a Bellman-Ford hop number constraint method BF-TN;
and S104, data transmission, namely, controlling the SNTS table to be issued by the domain controller and the core controller respectively to realize transmission control under different practical conditions.
2. The SRv 6-based industrial internet multi-domain integration architecture of claim 1, wherein: the SR global block SRGB in the SMA structure is an address set representing a global segment, a fault node set CFN is removed through the SRGB to obtain a set of non-fault nodes, and meanwhile, the passive feedback of the SMA node responds to a malicious node in a network in real time; and after the SRGB eliminates the fault node and the malicious node, generating an SMA node credible set SNTS and issuing the SNTS to each SMA node.
3. The SRv 6-based industrial internet multi-domain integration architecture of claim 1, wherein: a core controller in the SMA structure receives the SNTS of the intra-domain controller of each SMA domain; after comprehensively updating the total SNTS by the core controller, sending the updated SNTS to each inter-domain controller according to the SRv6 protocol;
the specific working contents of the controller in the domain comprise: 1) uploading data to each SMA node in the core controller domain; 2) receiving and updating summary node information of a core controller for inter-domain transmission, 3) sending a probe to actively detect the state of nodes in a domain, quickly positioning a fault node, 4) receiving statistical information of fault node information passively fed back by an SMA node in a real-time communication process, updating a node information table, and 5) sending a credible node set SNTS to the SMA nodes in each SMA domain;
the SMA node performing operations comprising: 1) receiving and regularly updating a node information table; 2) generating a corresponding forwarding mode and path according to the SNTS when the bottom layer data stream has a forwarding requirement; 3) and receiving forwarding verification of the previous hop node data in the real-time communication process and reporting the exception to a controller in the domain.
4. The SRv 6-based industrial internet multi-domain integration architecture of claim 1, wherein: the step of active probing by the controller in the domain comprises:
when the controller in the SMA domain starts to actively detect, setting a time period of T milliseconds, sending UDP detection in each period at regular time, regarding a given time period T, if no detection is received within 2T milliseconds, considering that the detection period is overtime, and under the state, the controller in the domain sends a detection to each SMA node to determine a fault point;
the information of the active detection nodes and each segment is determined by RGB sent by the controller in the domain; the actual physical network topology is defined as a weighted graph G ═ V, E >, where V denotes the set of all segments in SRGB, E denotes the connection between the sets of segments, the intra-domain controller of the SMA domain will actively detect all objects in E with a period of T, and the detection result will have the following two kinds of feedback:
1) for each edge E belongs to E, if the intra-domain controller actively detects overtime, the intra-domain controller detects each node V belongs to V to determine a fault node;
2) for each edge E belongs to E, if the intra-domain controller actively detects successfully, the intra-domain controller records the path weight;
after active detection of the SMA controller, two data will be obtained:
1) weighting the path weight w (e) of each edge in the graph G;
2) and collecting fault sections and fault nodes in the fault node collection CFN of the SMA.
5. The SRv 6-based industrial internet multi-domain integration architecture of claim 1, wherein: the step of the SMA node passive feedback comprises the following steps: in the data transmission process of the SMA, if the transmission node fails to check the data, the transmission node reports the error to the corresponding controller in real time.
6. The SRv 6-based industrial internet multi-domain integration architecture of claim 1, wherein: the data transmission comprises the communication in the same SMA domain and the communication among different SMA domains:
the specific content of intra-domain communication is as follows: each SMA node receives and periodically updates a node information table SNTS, and when the SMA bottom layer router has a forwarding requirement, the SMA node generates a corresponding forwarding path according to BF-TN so as to carry out network communication;
the specific content of the inter-domain communication is as follows: in the SMA cross-domain process based on SRv6-BE, all head and tail nodes in SMA nodes support SRv6, other boundary routing equipment can not support SRv6, and only IPv6 forwarding is supported; in the network condition based on the public network IPv6, the physical network externally connects with a top controller; the controllers in each domain are respectively controlled by the top layer controller, and the network topology of the network data control layer is a star structure.
7. The SRv 6-based industrial internet multi-domain integration architecture of claim 1, wherein: the specific method for generating the transmission path is as follows:
defining Mi (S, D) as the minimum jump path between the source node S and the destination node D in order to limit the length of the generated path;
let Ma (S, D) be the maximum number of hops tolerable between the source node S and the destination node D, nods (g) be defined as the total number of nodes, α being the maximum path length adjusted by the number of network nodes in a particular case;
Ma(S,D)＝Nods(G)α+Mi(S,D)(1-α)，0<α<1
and then obtaining a corresponding S-to-D data transmission path after Ma (S, D) times of relaxation according to the input of SNTS, S, D and Ma (S, D).
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2540035A1 (en) * | 2010-02-23 | 2013-01-02 | Telefonaktiebolaget LM Ericsson (publ) | Summarisation in a multi-domain network |
| CN110708245A (en) * | 2019-09-29 | 2020-01-17 | 华南理工大学 | SDN data plane fault monitoring and recovery method under multi-controller architecture |
| US20210120097A1 (en) * | 2017-07-28 | 2021-04-22 | Guizhou Baishancloud Technology Co., Ltd. | Scheduling solution configuration method and apparatus, computer readable storage medium thereof, and computer device |
-
2021
- 2021-11-09 CN CN202111317316.XA patent/CN114039833B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2540035A1 (en) * | 2010-02-23 | 2013-01-02 | Telefonaktiebolaget LM Ericsson (publ) | Summarisation in a multi-domain network |
| US20210120097A1 (en) * | 2017-07-28 | 2021-04-22 | Guizhou Baishancloud Technology Co., Ltd. | Scheduling solution configuration method and apparatus, computer readable storage medium thereof, and computer device |
| CN110708245A (en) * | 2019-09-29 | 2020-01-17 | 华南理工大学 | SDN data plane fault monitoring and recovery method under multi-controller architecture |
Non-Patent Citations (2)
| Title |
|---|
| 刘睿;吴军平;: "SR技术探究及实现", 网络新媒体技术, no. 03, 15 May 2020 (2020-05-15) * |
| 李亚明;刘陈;王辰;刘奇;刘德明;: "基于IPv6的无线传感网络设计", 物联网技术, no. 03, 15 March 2015 (2015-03-15) * |
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