CN109150716A - Change in topology response method, path calculating client and path computing system - Google Patents
Change in topology response method, path calculating client and path computing system Download PDFInfo
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- CN109150716A CN109150716A CN201710504132.1A CN201710504132A CN109150716A CN 109150716 A CN109150716 A CN 109150716A CN 201710504132 A CN201710504132 A CN 201710504132A CN 109150716 A CN109150716 A CN 109150716A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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Abstract
The present invention provides change in topology response method, path calculating client and path computing systems, wherein this method comprises: determining that path-calculating element PCE carries out the first Interior Gateway Protocol IGP type that path computing uses；It changes in IGP topology, and in changed IGP type situation identical with the first IGP type, initiates to calculate road request to the PCE to update current path calculated result.Through the invention, it solves the problems, such as that the variation of Interior Gateway Protocol dynamic topology causes topology not restrain in the related technology, guarantees the topological fast convergence under Interior Gateway Protocol dynamic topology situation of change.
Description
Technical field
The present invention relates to data network communications fields, particularly with regard to change in topology response method, path computing client
End and path computing system.
Background technique
In super large, cross-domain, multitiered network, the multiprotocol label switching MPLS TE of Traffic Engineering extensions
(Multiprotocol Label Switching Traffic Engineering) path computing be it is extremely complex, often
It needs to cooperate between heterogeneous networks domain.For this purpose, " framework that one kind is based on path-calculating element (PCE) " (RFC 4655)
Propose a kind of framework for being based on path-calculating element (abbreviation PCE).PCE is a kind of based on network topology, using constraint condition,
Calculate the entity of a network path or routing.PCE can be located on network node, the server being also possible to outside a network
Deng.PCE may calculate traffic engineering multi-protocols mark by bandwidth and other constraint conditions by flowing of access engineering data base TED
The path of label exchange TE LSP (Label switched path).
Path calculating client (Path Compute Client, abbreviation PCC) passage path calculates communication protocol (Path
Computation Element Communication Protocol, abbreviation PCEP) agreement to PCE initiate path computing ask
It asks, the calculation road result or calculate the reason of failing that PCE is calculated by PCEP response.
The path computing between PCC and PCE has been described in detail in " path computing communication protocol " (RFC 5440) to interact
Process.PCC is if necessary to calculate one or more path, it is necessary first to which selection one or more PCE carrys out request path calculating.?
After PCEP session establishment is completed, PCC uses path computing request message (Path Computation Request, abbreviation
PCReq) to PCE request path calculating-by requesting the address id and PCC-PCE to unique identification path computing request.PCE is received
After the PCRep message that PCC is sent, path calculation process is triggered.PCE is to PCC path computation response message (Path
Computation Reply, abbreviation PCRep), for being responded to PCRep message, to PCC return path calculated result.Such as
Fruit PCE calculates the path for meeting constraint, then is taken using ERO (Explicit Route Object) object in PCRep message
With each paths, PCC is returned to.If PCE calculates path failure, NO-PATH object must be carried in PCRep message, is used
In instruction path computing failure, and failure cause can be indicated in the object.
In Interior Gateway Protocol IGP how topological application scenarios, ospf OSPF in network, link
Two kinds of IGP Routing Protocols of state routing protocol ISIS coexist, and all enable traffic engineering (Traffic Engineering,
Abbreviation TE) function.As attached drawing 1 is opened up by Border Gateway Protocol link state (BGP-Link State, abbreviation BGP-LS)
It flutters on the router device PCC for collecting and being connected with SDN controller while running IGP and bgp protocol.Wherein, IGP is global chain
Line state agreement supports flood link-state information, including maximum link bandwidth, maximum reservable bandwidth, current reserved bandwidth
Give these link-state informations and TE synchronizing information to BGP-LS example Deng, IGP example, BGP-LS example by equipment PCC and
For the bgp neighbor that SDN controller is established to controller report, SDN controller collected network topological information by BGP-LS function.
PCE can be a component in SDN controller and be also possible to a functional module.
In IGP how topological application scenarios, as shown in Fig. 2, the side PCC needs to build a traffic engineering from R1 and expands
Resource reservation (Resource Reservation Protocol-Traffic Engineering, abbreviation RSVP-TE) tunnel of exhibition
Road is enabled to R3 to PCE request path computing function, but unauthorized is to PCE.So-called unauthorized refers to PCC not by the control of LSP
Power gives PCE, and PCE cannot update again original LSP according to current calculation road or network change.The cephalomere in the tunnel RSVP-TE
Point is R1, tail node R3.PCE establishes PCEP session with R1, and R1 is PCC.PCE collected network topology by BGP-LS
Information calculate road success after hair PCRep message to PCC, after PCC is received, PCEP process pass through process between reliable news and resource it is pre-
Agreement RSVP process interaction is stayed, RSVP process establishes traffic engineering tunnel up by signaling.
When occurring in network topology, OSPF/ISIS example is deleted, interface removes enabled IGP area/level, OSPF/ISIS
Example, which goes to the local tunnel RSVP-TE of the side PCC when the variations such as enabled TE not respond to these change in topology, finally can not quickly receive
It holds back.
Aiming at the problem that variation of Interior Gateway Protocol dynamic topology in the related technology causes topology not restrain, the prior art is also
It does not put forward effective solutions.
Summary of the invention
The present invention provides change in topology response method, path calculating client and path computing systems, solve inside
The problem of variation of gateway protocol dynamic topology causes topology not restrain.
According to an aspect of the present invention, a kind of change in topology method is provided, including determines that path-calculating element PCE is carried out
The first Interior Gateway Protocol IGP type that path computing uses；It changes in IGP topology, and changed 2nd IGP class
In type situation identical with the first IGP type, initiate to calculate road request to the PCE to update current path calculated result.
Further, determining that the PCE is after the PCC calculates the first IGP type that path uses, this method is also wrapped
It includes: changing in IGP topology, and in changed 2nd IGP type and the first different types of situation of IGP, maintain
Current path calculated result is constant.
Further, it includes: to obtain the PCE that the determination PCE, which is the first IGP type that PCC calculating path uses,
The path computing response message PCRep of transmission, wherein the PCRep message responds the path computing of PCC generation for the PCE
Request message PCReq；The first IGP type is determined according to the IGP type carried in the PCRep.
Further, which carries label switching path LSP object, carries an at least Type Length in the LSP object
Value TLV, the TLV include field type, field length and field value, which is the IGP type.
Further, it includes: to send out to the PCE that the determination PCE, which is the first IGP type that PCC calculating path uses,
Send path computing request message PCReq, wherein the PCReq is used to indicate the PCE and calculates according to the IGP type that the PCReq is carried
Path and return path calculated result；The first IGP type is determined according to the IGP type carried in the PCReq.
Further, which carries label switching path LSP object, carries an at least Type Length in the LSP object
Value TLV, the TLV include field type, field length and field value, which is the IGP type.
Further, the first IGP type includes link-state routing protocol ISIS and ospf
OSPF, the 2nd IGP type include link-state routing protocol ISIS and ospf OSPF.
Further, in the case where the 2nd IGP type is ISIS, which includes at least following one:
ISIS example is deleted, ISIS example is gone down, and enabled traffic engineering TE, interface remove enabled ISIS.
Further, in the case where the 2nd IGP type is OSPF, which includes at least following one:
OSPF example is deleted, ospf area is deleted, OSPF example is gone down enabled TE.
According to another aspect of the present invention, a kind of path calculating client, including processor and memory are provided, at this
Reason device is configured as executing the program instruction in the memory, which comprises determining that path-calculating element PCE carries out path meter
The the first Interior Gateway Protocol IGP type used；Change in IGP topology, and changed 2nd IGP type with should
In the identical situation of first IGP type, initiate to calculate road request to the PCE to update current path calculated result.
According to another aspect of the present invention, a kind of path computing system, including path-calculating element PCE and path are provided
Calculate client rs PC C, comprising: the PCE carries out path computing using the first Interior Gateway Protocol IGP type, and by path computing
As a result it is sent to the PCC；The PCC determines the first IGP type；It changes in IGP topology, and changed 2nd IGP
In type situation identical with the first IGP type, which initiates to calculate road request to update current path calculating knot to the PCE
Fruit.
Through the invention, the intranet that road uses is calculated using in the relevant Interior Gateway Protocol type of change in topology and PCE
The technical solution for updating current path calculated result in the identical situation of protocol type is closed, solves gateway association in the middle part of the relevant technologies
The problem of view dynamic topology variation causes topology not restrain guarantees that topology is fast under Interior Gateway Protocol dynamic topology situation of change
Speed convergence.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of BGP-LS collecting topology in the related technology；
Fig. 2 is creation schematic diagram in path under the more topological scenes of IGP in the related technology；
Fig. 3 is the flow chart of change in topology response method according to an embodiment of the present invention；
Fig. 4 is the structural block diagram of path calculating client according to an embodiment of the present invention；
Fig. 5 is the structural block diagram of path computing system according to an embodiment of the present invention；
Fig. 6 is according to LSP Format Object schematic diagram in PCEP agreement in the related technology；
Fig. 7 is the IGP-Type TLV schematic diagram increased newly in LSP object according to an embodiment of the present invention；
Fig. 8 is the flow chart of response OSPF-TE relevant topology variation according to the preferred embodiment of the invention；
Fig. 9 is the flow chart of response ISIS-TE relevant topology variation according to the preferred embodiment of the invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
Providing a kind of change in topology response method and path calculating client, Fig. 3 in the present embodiment is according to this hair
The flow chart of the change in topology response method of bright embodiment, as shown in figure 3, the process includes the following steps:
Step S302 determines that path-calculating element PCE carries out the first Interior Gateway Protocol IGP class that path computing uses
Type；
Preferably, determining that the PCE is to send out after the PCC calculates the first IGP type that path uses in IGP topology
Changing, and in changed IGP type and the first different types of situation of IGP, maintain current path calculated result not
Become.
A kind of feasible embodiment be by way of obtaining the path computing response message PCRep of PCE transmission come
Determine that the PCE is the first IGP type that the PCC calculates that path uses.The PCRep message responds PCC generation for the PCE
Path computing request message PCReq；The first IGP type is determined according to the IGP type carried in the PCRep.
Further, which carries label switching path LSP object, carries an at least Type Length in the LSP object
Value TLV, the TLV include field type, field length and field value, which is the IGP type.
Another feasible embodiment is by way of to PCE path computation request message PCReq come really
The fixed PCE is the first IGP type that the PCC calculates that path uses.The PCReq is used to indicate the PCE and carries according to the PCReq
IGP type calculate path and return path calculated result；The first IGP class is determined according to the IGP type carried in the PCReq
Type.
Further, which carries label switching path LSP object, carries an at least Type Length in the LSP object
Value TLV, the TLV include field type, field length and field value, which is the IGP type.
Step S304 changes in IGP topology, and changed 2nd IGP type is identical as the first IGP type
In the case where, initiate to calculate road request to the PCE to update current path calculated result.
Optionally, the first IGP type includes link-state routing protocol ISIS and ospf OSPF,
2nd IGP type includes link-state routing protocol ISIS and ospf OSPF.
Optionally, the 2nd IGP type be ISIS in the case where, the change in topology can for ISIS example delete,
Go down enabled traffic engineering TE, interface of ISIS example removes enabled ISIS.
Optionally, the 2nd IGP type be OSPF in the case where, the change in topology can for OSPF example delete,
Ospf area is deleted, OSPF example is gone down enabled TE.
Fig. 4 is the structural block diagram of path calculating client according to an embodiment of the present invention, as shown in figure 4, the device includes:
Processor 42 and memory 44, the processor 42 are configured as executing the program instruction in the memory 44, this refers to
It enables and comprises determining that path-calculating element PCE carries out the first Interior Gateway Protocol IGP type that path computing uses；In IGP topology
It changes, and in changed 2nd IGP type situation identical with the first IGP type, initiates calculation road to the PCE and ask
It asks to update current path calculated result.
Fig. 5 is the structural block diagram of path computing system according to an embodiment of the present invention, as shown in figure 5, the device includes:
Path-calculating element PCE52 and path calculating client PCC54, comprising: the PCE52 is assisted using the first internal gateway
It discusses IGP type and carries out path computing, and path computation result is sent to the PCC54；The PCC54 determines the first IGP type；
It changes in IGP topology, and in changed 2nd IGP type situation identical with the first IGP type, the PCC54
Initiate to calculate road request to the PCE52 to update current path calculated result.
Invention is further explained combined with specific embodiments below.
It selects a PCE request path to calculate successfully tunnel up for the side the PCC tunnel RSVP-TE, but does not respond to
IGP dynamic topology variation finally can not fast convergence the problem of, the present invention provides one kind PCE calculate road result PCRep message
LSP object in increase TLV newly and carry the method for IGP type to accelerate the convergence in the tunnel dynamic RSVP-TE.Above-mentioned PCC unauthorized
PCE updates original LSP according to current calculation road or network change again.
Technical solution of the present invention includes the following steps:
The first step needs to increase an IGP-Type TLV newly in the original LSP object of attached drawing 6.It is increased newly in the present invention
IGP-Type TLV is shown in attached drawing 7.PCE carries LSP object into the PCRep message that PCC is sent, and has in LSP object of the invention new
The IGP-Type TLV of increasing.
Specifically, PCE according to PCC initiate with calculating in road request PCRep message the source IP address of specified path, destination IP
Location, bandwidth, establish the information such as priority carry out path computing pass through if PCE calculates the path for meeting path constraint
Path is returned to PCC by PCRep message, and PCRep message here needs to increase an IGP-Type TLV inside LSP object
It indicates to calculate IGP type used in path.
Second step, PCC receive the PCRep message of PCE reply, are learnt by reliable news interaction, RSVP process between process
PCE calculates the IGP type in path, and PCC reports LSP state to PCE by PCRpt after LSP is established.Above-mentioned LSP state includes LSP
Object, ERO (Explicit Route Object) etc..
PCC is received after the PCRep message of PCE path computing response through the reliable news interaction between process, RSVP process
It learns that PCE calculates the IGP type in path, and initiates the LSP creation process of RSVP signaling, PCC is sent to PCE after LSP up
PCRpt message, for reporting current LSP status.Above-mentioned LSP state includes LSP object, ERO (Explicit Route
Object) etc..Wherein, the LSP object inside PCRpt message shows LSP current operation status, the mode of operation include up,
Down etc., ERO object show showing paths for current LSP.
Third step calculates the established tunnel RSVP-TE in road by PCE and correctly responds the variation of IGP dynamic topology.
Local RSVP-TE tunneled requests PCE path computing but unauthorized is in the scene of PCE, needs local RSVP correct
Response IGP dynamic topology changes the fast convergence to accelerate the tunnel RSVP-TE.
By above three step, in the case where PCC unauthorized is to PCE, the local tunnel RSVP-TE can be calculated according to PCE
The IGP type carried in the PCRep message that road successfully returns carrys out correct change in response to IGP dynamic topology and accelerates RSVP-TE tunnel
The fast convergence in road.
Specific embodiment one
As shown in Fig. 2, certain upper business of R1 need to create the tunnel RSVP-TE (enable to PCE request path calculate,
But without authorization function), head node R1, tail node R3.PCE establishes PCEP session with R1, and R1 is PCC.RSVP process
It initiates to calculate road request to PCEP process by authentic communication interaction between process, PCC requests PCE to carry out calculating path.In PCReq
Needing to carry TE in message, these are calculated roads constraint (bandwidth, priority etc.) and so that PCE is when calculating road can calculate safety, reliably
Link.After PCE receives the PCRep message of PCC transmission, path computing is carried out, if PCE, which is calculated, meets path constraint
Path R1-R2-R3 then carries each paths by the ERO object in PCRep message, path is returned to PCC, PCRep message
In LSP object in increase an IGP-Type TLV newly come specifically used IGP type when indicating that PCE calculates path.
PCC is received after the PCRep message of PCE path computing response through the reliable news interaction between process, RSVP process
It learns that PCE calculates the IGP type in path, and initiates the LSP creation process of RSVP signaling, PCC is sent to PCE after LSP up
PCRpt message, for reporting current LSP status (LSP object includes that LSP mode of operation UP etc. and ERO show paths).
If it is OSPF that PCE, which calculates the IGP type that road successfully returns, the local the PCC tunnel RSVP-TE responds the place of change in topology
Reason process is shown in attached drawing 8.When the relevant change in topology of the following OSPF-TE of generation-such as OSPF example is deleted, interface goes to enable
OSPF, OSPF remove enabled TE etc., and the local tunnel RSVP-TE must respond the variation of IGP dynamic topology, accelerate the fast of the tunnel RSVP-TE
Speed convergence, carries out dismounting reconstruction to the tunnel RSVP-TE, initiates path computing request to PCE again.And as generation ISIS-TE
Such as ISIS example is deleted when relevant change in topology, go down enabled TE, interface of ISIS example removes enabled ISIS etc., the RSVP-
Traffic engineering tunnel is not responding to unrelated change in topology, does not influence RSVP-TE tunnel state.
If it is ISIS that PCE, which calculates the IGP type that road successfully returns, the local the PCC tunnel RSVP-TE responds the place of change in topology
Reason process is shown in attached drawing 9, and when the relevant change in topology-of following ISIS-TE occurs, such as ISIS example is deleted, ISIS example is gone down and made
Energy TE, interface remove enabled ISIS etc., and the local tunnel RSVP-TE must respond the variation of IGP dynamic topology, accelerate the tunnel RSVP-TE
Fast convergence carries out dismounting reconstruction to the tunnel RSVP-TE, initiates path computing request to PCE again.And as generation OSPF-
Such as OSPF example goes enabled TE, OSPF example to delete when the relevant change in topology of TE, interface removes enabled OSPF etc., the RSVP-
Traffic engineering tunnel is not responding to unrelated change in topology, does not influence RSVP-TE tunnel state.
Specific embodiment two
Preferably, PCC can specify PCE and calculate the IGP type that road uses for it.
Specifically, OSPF in more topological scenes for coexisting of ISIS, if PCC initiates to calculate road request to PCE
It is expected that PCE when calculating path, can initiate to calculate the LSP for requesting PCRep message in road in PCC using certain specific IGP type
Increase the newly-increased IGP-Type TLV of the present invention in object.The PCC phase is indicated by the different value of identification IGP-Type (T) field
PCE is hoped to calculate path using the data information of OSPF-TE and still it is expected PCE using the database information of ISIS-TE to calculate
Path.It is identical as the carrying mode of LSP object in PCRep message that LSP object is carried in above-mentioned PCRep message, above-mentioned PCReq disappears
The format of IGP-Type TLV is identical as the format of IGP-Type TLV in PCRep message in breath, no longer illustrates here.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
Above this is merely a preferred embodiment of the present invention, and is not intended to restrict the invention, for the technology of this field
For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all include within protection scope of the present invention.
Claims (11)
1. a kind of change in topology response method characterized by comprising
Determine that path-calculating element PCE carries out the first Interior Gateway Protocol IGP type that path computing uses；
It changes in IGP topology, and in changed 2nd IGP type situation identical with the first IGP type, to
The PCE initiates to calculate road request to update current path calculated result.
2. the method according to claim 1, wherein determining that the PCE PCC calculates path and use
After the first IGP type, the method also includes:
It changes in IGP topology, and in changed 2nd IGP type and the different types of situation of the first IGP, dimension
It is constant to hold current path calculated result.
3. according to the method described in claim 2, it is characterized in that, the determination PCE is that the PCC calculates path use
The first IGP type include:
Obtain the path computing response message PCRep that the PCE is sent, wherein the PCRep message is responded for the PCE
The path computing request message PCReq that the PCC occurs；
The first IGP type is determined according to the IGP type carried in the PCRep.
4. according to the method described in claim 3, it is characterized in that, the PCRep carries label switching path LSP object, institute
Stating and carrying at least type lengths values a TLV, the TLV in LSP object includes field type, field length and field value, described
Field value is the IGP type.
5. according to the method described in claim 2, it is characterized in that, the determination PCE is that the PCC calculates path use
The first IGP type include:
To the PCE path computation request message PCReq, wherein the PCReq is used to indicate the PCE according to described
The IGP type that PCReq is carried calculates path and return path calculated result；
The first IGP type is determined according to the IGP type carried in the PCReq.
6. according to the method described in claim 5, it is characterized in that, the PCReq carries label switching path LSP object, institute
Stating and carrying at least type lengths values a TLV, the TLV in LSP object includes field type, field length and field value, described
Field value is the IGP type.
7. method according to claim 1 to 6, which is characterized in that the first IGP type includes link shape
State Routing Protocol ISIS and ospf OSPF, the 2nd IGP type includes link-state routing protocol
ISIS and ospf OSPF.
8. the method according to the description of claim 7 is characterized in that the 2nd IGP type be ISIS in the case where, it is described
Change in topology includes at least following one: ISIS example is deleted, ISIS example is gone down, and enabled traffic engineering TE, interface go to enable
ISIS。
9. the method according to the description of claim 7 is characterized in that the 2nd IGP type be OSPF in the case where, it is described
Change in topology includes at least following one: OSPF example is deleted, ospf area is deleted, OSPF example is gone down enabled TE.
10. a kind of path calculating client, which is characterized in that including processor and memory, the processor is configured to holding
Program instruction in the row memory, described instruction include:
Determine that path-calculating element PCE carries out the first Interior Gateway Protocol IGP type that path computing uses；
It changes in IGP topology, and in changed 2nd IGP type situation identical with the first IGP type, to
The PCE initiates to calculate road request to update current path calculated result.
11. a kind of path computing system, which is characterized in that including path-calculating element PCE and path calculating client PCC, packet
It includes:
The PCE carries out path computing using the first Interior Gateway Protocol IGP type, and path computation result is sent to described
PCC；
The PCC determines the first IGP type；
It changes in IGP topology, and in changed 2nd IGP type situation identical with the first IGP type, institute
It states PCC and initiates to calculate road request to the PCE to update current path calculated result.
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| CN112054958A (en) * | 2019-06-06 | 2020-12-08 | 中兴通讯股份有限公司 | Path calculation method, storage medium and electronic device |
| CN113347195A (en) * | 2021-06-18 | 2021-09-03 | 山东产研信息与人工智能融合研究院有限公司 | Dynamic mounting system and method for communication protocol packet of Internet of things equipment |
| WO2022160666A1 (en) * | 2021-01-26 | 2022-08-04 | 华为技术有限公司 | Information flooding method and device |
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| CN112054958A (en) * | 2019-06-06 | 2020-12-08 | 中兴通讯股份有限公司 | Path calculation method, storage medium and electronic device |
| CN112054958B (en) * | 2019-06-06 | 2023-07-14 | 中兴通讯股份有限公司 | Path calculation method, storage medium and electronic device |
| WO2022160666A1 (en) * | 2021-01-26 | 2022-08-04 | 华为技术有限公司 | Information flooding method and device |
| CN113347195A (en) * | 2021-06-18 | 2021-09-03 | 山东产研信息与人工智能融合研究院有限公司 | Dynamic mounting system and method for communication protocol packet of Internet of things equipment |
| CN113347195B (en) * | 2021-06-18 | 2022-12-23 | 山东产研信息与人工智能融合研究院有限公司 | Dynamic mounting system and method for communication protocol packet of Internet of things equipment |
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