CN114866510A - Cross-network and remote interconnection communication method and system based on InfiniBand network - Google Patents
Cross-network and remote interconnection communication method and system based on InfiniBand network Download PDFInfo
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- CN114866510A CN114866510A CN202210575498.9A CN202210575498A CN114866510A CN 114866510 A CN114866510 A CN 114866510A CN 202210575498 A CN202210575498 A CN 202210575498A CN 114866510 A CN114866510 A CN 114866510A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/106—Mapping addresses of different types across networks, e.g. mapping telephone numbers to data network addresses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/90—Buffering arrangements
- H04L49/9057—Arrangements for supporting packet reassembly or resequencing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Abstract
The invention belongs to the technical field of network communication, and provides a cross-network and allopatric interconnection communication method and a system based on an InfiniBand network, wherein the method is based on that allopatric gateway equipment establishes communication through a socket, mutually transmits the state of an IB network card port of the equipment, and waits for the start of subnet management service when the gateway equipment mutually confirms that the IB network card port is in a start state; starting IB subnet management service, reconstructing and forwarding a subnet management data packet according to an IB subnet management protocol, and fusing a plurality of IB subnets into one IB subnet through socket communication among gateway devices; under the IB sub-network, communication among a plurality of different-place IB clusters is carried out, and the problem that the IB network cannot carry out different-place cross-operator network interconnection is solved.
Description
Technical Field
The invention belongs to the technical field of network communication, and particularly relates to a cross-network and allopatric interconnection communication method and system based on an InfiniBand network.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The prior patent CN 101258719A-method for extending real-time arrival of InfiniBand network can achieve interconnection and intercommunication of IB network across operator network based on hardware equipment with specific functions. Patent CN 108989172A-a method and system for interconnecting ethernet and infiniBand networks, which realizes interconnection and intercommunication between two networks based on the conversion of corresponding addresses of ethernet and infiniBand and the format conversion of data packets.
The inventor finds that the problems in the prior allopatric cross-operator network interconnection are as follows:
(1) IB network interconnection needs to depend on specific hardware gateway equipment;
(2) aiming at the design method of address conversion and data packet format conversion, a certain amount of data address information needs to be maintained in real time, the design complexity is increased, and the method is not suitable for IB network interconnection scenes in different places.
Disclosure of Invention
In order to solve at least one technical problem in the background art, the invention provides a cross-network and cross-place interconnection communication method based on an InfiniBand network, which solves the problem that an IB network cannot carry out cross-operator network interconnection in different places in a mode of reconstructing an IB network subnet management data packet.
In order to achieve the purpose, the invention adopts the following technical scheme:
the first aspect of the invention provides an InfiniBand network-based cross-network allopatric interconnection communication method, which comprises the following steps:
the method comprises the steps that communication is established between remote gateway devices through a socket, states of IB network card ports of the gateway devices are mutually sent, and when the gateway devices mutually confirm that the IB network card ports are in a starting state, the gateway devices wait for subnet management service to be started;
starting IB subnet management service, reconstructing and forwarding a subnet management data packet according to an IB subnet management protocol, and fusing a plurality of IB subnets into one IB subnet through socket communication among gateway devices; under the IB subnet, communication among a plurality of off-site IB clusters is performed.
A second aspect of the present invention provides an InfiniBand network-based cross-network remote interconnection communication system, including: the system comprises a plurality of different IB clusters, a plurality of gateway equipment and a plurality of communication devices, wherein the IB clusters are connected to IB network card ports of corresponding gateway equipment through IB networks, and ETC network card ports of the gateway equipment are connected through operator networks;
the gateway equipment in different places is used for establishing communication through a socket, mutually sending the state of an IB network card port of the gateway equipment, and waiting for the start of the subnet management service when the gateway equipment mutually confirms that the IB network card port is in a starting state;
after the subnet management service is started, the gateway equipment is used for reconstructing and forwarding the subnet management data packet according to an IB subnet management protocol, and a plurality of IB subnets are fused into one IB subnet through socket communication among the gateway equipment; under the IB subnet, communication among a plurality of off-site IB clusters is performed.
A third aspect of the invention provides a computer-readable storage medium.
A computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps in an InfiniBand network-based cross-network placeshifting intercommunication method as described above.
A fourth aspect of the invention provides a computer apparatus.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps in an InfiniBand network-based cross-network allopatric communication method as described above when executing the program.
Compared with the prior art, the invention has the beneficial effects that:
1. the key point of the IB network different-place interconnection scene is not in the interconnection and intercommunication of two networks, but in how to carry out interconnection and intercommunication across operator networks between different-place IB networks.
2. The invention solves the problem that the IB network can not realize the remote service cooperative calculation by realizing the interconnection and intercommunication of the IB network remote cluster cross operator architecture, and shields the interconnection difference of the bottom layer for the upper layer service of the IB network.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic overall flow chart of cross-network allopatric interconnection communication based on an InfiniBand network according to the present invention;
FIG. 2 is a schematic diagram of IB subnet management initiation of the present invention;
FIG. 3 is a flow chart of the present invention for managing packet forwarding to a subnet;
FIG. 4 is a diagram illustrating the detailed operation of three attribute messages according to the present invention;
FIG. 5 is a schematic diagram of the normal IB communication of the present invention;
FIG. 6 is a topological connection diagram of IB cross-network allopatric interconnection of the present invention;
FIG. 7 is a diagram showing the overall effect of IB interconnection across networks.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Interpretation of terms
InfiniBand: (IB), a computer network communications standard for high performance computing with extremely high throughput and extremely low latency for computer-to-computer data interconnection. InfiniBand also serves as a direct or switched interconnect between servers and storage systems, as well as an interconnect between storage systems.
Example one
Fig. 1 is a schematic overall flow chart, and as shown in fig. 1, this embodiment provides a cross-network and allopatric interconnection communication method based on an InfiniBand network, including the following steps:
s101: the method comprises the steps that communication is established between remote gateway devices through a socket, states of IB network card ports of the gateway devices are mutually sent, and when the gateway devices mutually confirm that the IB network card ports are in a starting state, the gateway devices wait for subnet management service to be started;
s102: starting IB subnet management service, reconstructing and forwarding a subnet management data packet according to an IB subnet management protocol, and fusing a plurality of IB subnets into one IB subnet through socket communication among gateway devices; under the IB subnet, communication among a plurality of off-site IB clusters is performed.
As one or more embodiments, in S101, the gateway device establishes communication through a socket, taking two IB network clusters in different locations as an example, all nodes in IB subnets in different locations are powered on and started, including the two gateway machines C, D, but the subnet management function is not started.
Machine C establishes socket communication with machine D, which is a normal communication procedure established based on the operator network.
After the two machines C and D establish socket communication, the states of the IB net mouths on the machines are mutually sent, and when the machines C and D mutually confirm that the physical layers of the IB net mouths are in the starting state, the intercommunication and interconnection of the two gateway machines are completed, and the subnet management service is started.
As shown in fig. 2, this embodiment takes the example that the IB cluster a starts subnet management, and specifically includes:
the first step is as follows: the cluster A completes the subnet management initialization process internally and removes the machine C. The subnet management initialization process of this part is consistent with the IB network native process.
The second step is that: the gateway machine C and the machine D complete the subnet management initialization process. And the machine C captures the subnet management data packet sent by the cluster A subnet management node, and reconstructs the data packet replying the cluster A subnet management node according to the attribute setting of the original switch, so that the cluster A subnet management node takes the gateway machine C and the machine D as a dual-port switch.
The third step: when the cluster A subnet management node takes the machine C and the machine D as switches, all the nodes in the IB cluster B are initialized according to the IB native subnet management initialization process.
The process of reconstructing the subnet management data packet is a process of modifying some message characteristics for the subnet management data packet, hereinafter referred to as SMP, sent by the cluster a subnet management node to the machine C.
As shown in fig. 3, as one or more embodiments, in S102, reconstructing and forwarding the subnet management data packet according to the IB subnet management protocol specifically includes: the gateway device acquires a subnet management data packet sent by the IB network cluster subnet management node in real time, judges whether the subnet management data packet is sent to the gateway device, modifies a routing field according to the related regulation of the IB subnet management routing if the subnet management data packet is not sent to the gateway device, utilizes socket communication to forward the subnet management data packet to other gateway devices, fills data into a sending buffer area of an IB network card of the gateway device when the other gateway devices receive the data, and otherwise modifies the message attribute.
As shown in fig. 3, first, after the cluster a starts subnet management, the machine C receives an SMP packet sent by a subnet management node because it is a node in the cluster a, and the first step is to determine whether the received SMP is sent to itself, if not, the machine C modifies a routing field according to the relevant specification of the IB subnet management route, and then uses socket communication to forward the routing field to the machine D, and the machine D extracts the SMP, and then sends the SMP from the port to the machine B; if the message is sent to the user, the message attribute needs to be modified.
And the machine C receives the subnet management packet sent by the cluster A, judges the Meted field in the first step and distinguishes a get method and a set method. And secondly, judging a specific Attribute Name through an Attribute modifier field, wherein the technical scheme mainly focuses on modifying the following Nodeinfo, switchlnfo and portinfo types, and other SMP Attribute messages are put back to the initial values. And thirdly, modifying the data return data packet.
At this time, machine C operates to encapsulate the subnet management packet in cluster a in socket communication and transmit the packet to machine D. The work of the machine D is to extract a subnet management data packet in the communication with the socket and transmit the subnet management data packet through an IB network port of the machine D.
In specific implementation, as shown in fig. 5, IB communication and subnet management initialization mainly depend on packet forwarding functions of machines C and D.
As one or more embodiments, the modifying the message attribute includes: after receiving the subnet management data packet of the gateway device, judging the message attribute based on the type of the metal field and the type of the Attribute modifier field of the message, reconstructing the subnet management data packet based on the judgment result, and returning the reconstructed subnet management data packet to the original data packet.
Further, whether the subnet management node acquires the information of the gateway device (Get method) or the information for setting the gateway device for subnet management (Set method) is judged according to the type of the Meted field;
judging a specific Attribute Name according to an Attribute modifier field, and judging types needing to be modified, wherein the types include Nodeinfo, switchlnfo and portinfo;
the SMP attribute message is put back to the initial value, and the modified subnet management data packet is returned to the original data packet.
The operations to be processed for different message attributes are different, and corresponding operations are also required to be performed on the methods in the SMP packet, including a Get method and a Set method. The Get method mainly includes that a subnet management node acquires information of a subnet machine, such as node information, switch information, port information and the like, and the SET method mainly includes that subnet management is used for setting information of the subnet machine, such as allocating an LID, setting a port state, enabling a link width, a link speed and the like.
As shown in fig. 4, as one or more embodiments, the determining, based on the type of the metal field of the packet and the type of the attribute modifier field, the reconstructing, based on the determination result, the subnet management packet specifically includes:
1. if the SMP is the Get method, the attribute is Nodeinfo, the returned data packet needs to modify the field Node type to switch, the field numports to 2, the fields systemImage-GUID, NodeGUID and PortGUID to be the same value but unique in the subnet, and other fields keep the initial value.
2. If the SMP is the Get method, the attribute is switchlnfo, all fields keep default values and a data packet is returned.
3. If the SMP is the Get method, the attribute is portinfo, the returned data packet needs to modify the field portstate to be 2, the field localportnum to be 1, the field portphysicalstate to be 5, and other fields keep the initial value.
4. And the set judging method is used for reserving the data information of the corresponding field set by the subnet management and returning the response.
Example two
The embodiment provides a cross-network and remote-place interconnection communication system based on an InfiniBand network, and fig. 6 is a topological connection diagram for implementing IB cross-network and remote-place interconnection, as shown in fig. 6, which includes a plurality of remote IB clusters, where the IB clusters are connected to IB network card ports of corresponding gateway devices through an IB network, and ETC network card ports of the gateway devices are connected through an operator network;
taking two IB network clusters in different places as an example, an IB cluster a is connected to a first gateway device through an IB network, an IB cluster B is connected to a second gateway device through an IB network, the first gateway device includes a first IB network card port C1 and a first ETC network card port C2, the second gateway device includes a second IB network card port D1 and a second ETC network card port D2, the first IB network card port C1 is connected to the IB cluster a, the first ETC network card port C2 is connected to the second ETC network card port D2 through an operator network, and the second IB network card port D1 is connected to the IB cluster B; the interconnection between two different IB network clusters is realized through the gateway equipment machine C and the gateway equipment machine D. The overall effect achieved after the two IB network clusters in different locations are connected is shown in fig. 7.
The gateway equipment in different places is used for establishing communication through a socket, mutually sending the state of an IB network card port of the gateway equipment, and waiting for the start of the subnet management service when the gateway equipment mutually confirms that the IB network card port is in a starting state;
after the subnet management service is started, the gateway equipment is used for reconstructing and forwarding the subnet management data packet according to an IB subnet management protocol, and a plurality of IB subnets are fused into one IB subnet through socket communication among the gateway equipment; under the IB subnet, communication among a plurality of off-site IB clusters is performed.
The reconstructing and forwarding the subnet management data packet according to the IB subnet management protocol specifically includes: the gateway equipment acquires a subnet management data packet sent by the IB network cluster subnet management node in real time, judges whether the subnet management data packet is sent to the gateway equipment or not, modifies a routing field according to related regulations of the IB subnet management routing if the subnet management data packet is not sent to the gateway equipment, utilizes socket communication to forward the routing field to other gateway equipment, and otherwise modifies the attribute of the subnet management data packet.
The modifying the attribute of the subnet management data packet comprises: after receiving the subnet management data packet of the gateway device, judging the message attribute based on the type of the metal field and the type of the Attribute modifier field of the message, reconstructing the subnet management data packet based on the judgment result, and returning the reconstructed subnet management data packet to the original data packet.
The method for determining the message attribute based on the type of the metal field of the message and the type of the AttributeModifier field, and reconstructing the subnet management data packet based on the determination result specifically include:
if the subnet management data packet is a Get method and the attribute is Nodeinfo, the returned data packet needs to modify the fields Node type to switch, numports, systemImage-GUID, NodeGUID and PortGUID, and other fields keep initial values;
if the subnet management data packet is a Get method, the attribute is switchlnfo, all the fields keep default values and return the data packet;
if the subnet management data packet is a Get method and the attribute is portinfo, the returned data packet needs to modify a field portstate, a field localportnum and a field portphysicalstate, and other fields keep initial values;
if the subnet management data packet is Set, the data information of the corresponding field Set by the subnet management is reserved, and the response is returned.
EXAMPLE III
The present embodiment provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps in an InfiniBand network-based cross-network allopatric communication method as described above.
Example four
The embodiment provides a computer device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps in the InfiniBand network-based cross-network allopatric interconnected communication method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A cross-network allopatric interconnection communication method based on an InfiniBand network is characterized by comprising the following steps:
the method comprises the steps that communication is established between remote gateway devices through a socket, states of IB network card ports of the gateway devices are mutually sent, and when the gateway devices mutually confirm that the IB network card ports are in a starting state, the gateway devices wait for subnet management service to be started;
starting IB subnet management service, reconstructing and forwarding a subnet management data packet according to an IB subnet management protocol, and fusing a plurality of IB subnets into one IB subnet through socket communication among gateway devices; under the IB subnet, communication among a plurality of off-site IB clusters is performed.
2. The method according to claim 1, wherein reconstructing and forwarding the subnet management data packet according to the IB subnet management protocol comprises: the gateway equipment acquires a subnet management data packet sent by the IB network cluster subnet management node in real time, judges whether the subnet management data packet is sent to the gateway equipment or not, modifies a routing field according to related regulations of the IB subnet management routing if the subnet management data packet is not sent to the gateway equipment, utilizes socket communication to forward the routing field to other gateway equipment, and otherwise modifies the attribute of the subnet management data packet.
3. The method according to claim 2, wherein the modifying the attribute of the subnet management packet comprises: after receiving the subnet management data packet of the gateway device, judging the message attribute based on the type of the metal field and the type of the Attribute modifier field of the message, reconstructing the subnet management data packet based on the judgment result, and returning the reconstructed subnet management data packet to the original data packet.
4. The InfiniBand network-based cross-network and allopatric internet communication method according to claim 3, wherein the determining of the message attribute based on the type of the metal field of the message and the type of the attributecodifier field, and the reconstructing of the subnet management packet based on the determination result specifically comprises:
if the subnet management data packet is a Get method and the attribute is Nodeinfo, the returned data packet needs to modify the fields Node type to switch, numports, systemImage-GUID, NodeGUID and PortGUID, and other fields keep initial values;
if the subnet management data packet is a Get method, the attribute is switchlnfo, all the fields keep default values and return the data packet;
if the subnet management data packet is a Get method and the attribute is portinfo, the returned data packet needs to modify a field portstate, a field localportum and a field portphysicalstate, and other fields keep initial values;
if the subnet management data packet is Set, the data information of the corresponding field Set by the subnet management is reserved, and the response is returned.
5. An InfiniBand network-based cross-network allopatric interconnection communication system comprises: the system comprises a plurality of different IB clusters, a plurality of gateway equipment and a plurality of communication devices, wherein the IB clusters are connected to IB network card ports of corresponding gateway equipment through IB networks, and ETC network card ports of the gateway equipment are connected through operator networks;
the gateway equipment in different places is used for establishing communication through a socket, mutually sending the state of an IB network card port of the gateway equipment, and waiting for the start of the subnet management service when the gateway equipment mutually confirms that the IB network card port is in a starting state;
after the subnet management service is started, the gateway equipment is used for reconstructing and forwarding the subnet management data packet according to an IB subnet management protocol, and a plurality of IB subnets are fused into one IB subnet through socket communication among the gateway equipment; under the IB subnet, communication among a plurality of off-site IB clusters is performed.
6. The system of claim 5, wherein the reconstructing and forwarding of sub-network management data packets according to the IB subnet management protocol comprises: the gateway equipment acquires a subnet management data packet sent by the IB network cluster subnet management node in real time, judges whether the subnet management data packet is sent to the gateway equipment or not, modifies a routing field according to related regulations of the IB subnet management routing if the subnet management data packet is not sent to the gateway equipment, utilizes socket communication to forward the routing field to other gateway equipment, and otherwise modifies the attribute of the subnet management data packet.
7. The InfiniBand network-based cross-site internet communication system of claim 6, wherein the modifying the attributes of the subnet management packet comprises: after receiving the subnet management data packet of the gateway device, judging the message attribute based on the type of the metal field and the type of the Attribute modifier field of the message, reconstructing the subnet management data packet based on the judgment result, and returning the reconstructed subnet management data packet to the original data packet.
8. The InfiniBand network-based inter-site communication system according to claim 7, wherein the determining of the message attribute based on the type of the metal field of the message and the type of the attributecodifier field, and the reconstructing of the subnet management packet based on the determination result specifically comprises:
if the subnet management data packet is a Get method and the attribute is Nodeinfo, the returned data packet needs to modify the fields Node type to switch, numports, systemImage-GUID, NodeGUID and PortGUID, and other fields keep initial values;
if the subnet management data packet is a Get method, the attribute is switchlnfo, all the fields keep default values and return the data packet;
if the subnet management data packet is a Get method and the attribute is portinfo, the returned data packet needs to modify a field portstate, a field localportnum and a field portphysicalstate, and other fields keep initial values;
if the subnet management data packet is Set, the data information of the corresponding field Set by the subnet management is reserved, and the response is returned.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps in a method for internetworking offsite connectivity over an InfiniBand network according to any of claims 1-4.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of a method of InfiniBand network based cross-network placeshifting interconnection communication according to any one of claims 1 to 4 when executing the program.
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