CN111585854B - Network system, protection method, device and storage medium for data network load scheduling - Google Patents
Network system, protection method, device and storage medium for data network load scheduling Download PDFInfo
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- CN111585854B CN111585854B CN202010395263.2A CN202010395263A CN111585854B CN 111585854 B CN111585854 B CN 111585854B CN 202010395263 A CN202010395263 A CN 202010395263A CN 111585854 B CN111585854 B CN 111585854B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2869—Operational details of access network equipments
- H04L12/287—Remote access server, e.g. BRAS
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- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1652—Optical Transport Network [OTN]
Abstract
The embodiment of the invention provides a network system, a protection method, equipment and a storage medium for data network load scheduling, wherein the network system comprises: the system comprises a plurality of optical line terminal OLT aggregation nodes, a plurality of broadband remote access server BRAS nodes and a plurality of straight-through optical fibers; the plurality of BRAS nodes comprise a first BRAS node and a second BRAS node; each OLT aggregation node in the plurality of OLT aggregation nodes is connected with the first BRAS node and the second BRAS node through a straight-through optical fiber to form a first optical cable loop; the first end of each OLT aggregation node is connected with a first BRAS node, and the second end of each OLT aggregation node is connected with a second BRAS node. The novel data network load scheduling network system provided by the invention can realize flexible scheduling and low-cost capacity expansion, and meets the high bandwidth requirement of a family broadband.
Description
Technical Field
The present invention relates to the field of transport network technologies, and in particular, to a network system, a protection method, a device, and a storage medium for data network bearer scheduling.
Background
After the broadband strategy is implemented in China, the network bandwidth is an important index for measuring network characteristics, and is increasingly generally concerned by people, and meanwhile, the bandwidth demand of people is gradually increased due to the fact that the information quantity of new-generation multimedia, image transmission, databases and network televisions is increased dramatically.
In the prior art, an Optical Line Terminal (OLT) in a metropolitan area Network (metropolitan area Network) uplinks to a Broadband Access Server (BRAS) generally uses an OTN group Network for carrying.
However, with the rapid development of home broadband, in the face of the bandwidth requirement of at least 10G from the uplink of the OLT to the BRAS in an urban area, the OTN networking in the prior art needs to perform channel expansion to meet the high bandwidth requirement of 10G. However, the channel expansion of the OTN is difficult, and the expansion cost is high, and the high bandwidth requirement of the home cannot be met by low-cost continuous expansion.
Disclosure of Invention
The embodiment of the invention provides a network system, a protection method, equipment and a storage medium for data network load-bearing scheduling.
In a first aspect, a network system for data network bearer scheduling is provided, where the network system includes: the system comprises a plurality of optical line terminal OLT aggregation nodes, a plurality of broadband remote access server BRAS nodes and a plurality of straight-through optical fibers; the plurality of BRAS nodes comprise a first BRAS node and a second BRAS node; each OLT aggregation node in the plurality of OLT aggregation nodes is connected with a first BRAS node and a second BRAS node through a straight-through optical fiber to form a first optical cable loop; the first end of each OLT aggregation node is connected with a first BRAS node, and the second end of each OLT aggregation node is connected with a second BRAS node.
In some implementation manners of the first aspect, the plurality of OLT aggregation nodes includes a first OLT aggregation node, and the plurality of BRAS nodes further includes a third BRAS node; when the distance between the first OLT aggregation node and the first BRAS node meets a first preset threshold value, a first end of the first OLT aggregation node is connected with a third BRAS node through a straight-through optical fiber, and a second end of the first OLT aggregation node is connected with a second BRAS node through a straight-through optical fiber to form a second optical cable loop; and the distance between the first OLT aggregation node and the third BRAS node meets a second preset threshold value.
In some implementations of the first aspect, the plurality of BRAS nodes further comprises a fourth BRAS node; when the distance between the first OLT aggregation node and the second BRAS node meets a first preset threshold value, the first end of the first OLT aggregation node is connected with a third BRAS node through a straight-through optical fiber, and the second end of the first OLT aggregation node is connected with a fourth BRAS node through a straight-through optical fiber to form a third optical cable loop; and the distance between the first OLT aggregation node and the fourth BRAS node meets a second preset threshold value.
In some implementations of the first aspect, the first BRAS node, the second BRAS node, the third BRAS node, and the fourth BRAS node are connected in sequence to form a ring optical transport OTN dispatch network.
In some implementation manners of the first aspect, based on the ring OTN scheduling network, the first BRAS node is connected to the third BRAS node, and the second BRAS node is connected to the fourth BRAS node, so as to form a MESH-type OTN scheduling network.
In some implementations of the first aspect, the plurality of OLT aggregation nodes further includes a second OLT aggregation node; when the distances between the second OLT aggregation node and the first BRAS node and between the second OLT aggregation node and the third BRAS node both meet a third preset threshold value, a first end of the second OLT aggregation node is connected with the second BRAS node through a straight-through optical fiber, and a second end of the second OLT aggregation node is connected with a fourth BRAS node through a straight-through optical fiber to form a fourth optical cable loop; and the distance between the second OLT aggregation node and the second BRAS node and the distance between the second OLT aggregation node and the fourth BRAS node both meet a fourth preset threshold value.
In a second aspect, a method for protecting a network system for bearer scheduling of a data network, where the network system for bearer scheduling of the data network includes a plurality of OLT aggregation nodes, is provided, and the method includes: two different physical routes are distributed for each OLT aggregation node, and main-standby protection is carried out on each OLT aggregation node according to the double physical routes; and establishing a link aggregation group on each OLT aggregation node.
In some implementations of the second aspect, after the link aggregation group is established at each OLT aggregation node, the method further includes: the link aggregation group comprises a first link aggregation group; and dividing the first Ethernet ports into a first link aggregation group according to the received aggregation command, wherein the first Ethernet ports in the first link aggregation group are dynamically backed up with each other.
In some implementations of the second aspect, after the link aggregation group is established at each OLT aggregation node, the method further includes: the link aggregation group comprises a second link aggregation group; and dynamically determining a second Ethernet port in the second link aggregation group according to the link aggregation control LACP protocol.
In some implementations of the second aspect, the link aggregation group includes a first link aggregation group and a second link aggregation group, the first link aggregation group including a first ethernet port; when the first link aggregation group is deleted, the first Ethernet port in the first link aggregation group is divided into the second link aggregation group according to the LACP protocol.
In some realizations of the second aspect, the network system for data network bearer scheduling further includes a plurality of BRAS nodes; when a plurality of BRAS nodes form a ring OTN scheduling network, two different physical routes are distributed to each BRAS node; when a plurality of BRAS nodes form a MESH type OTN scheduling network, three different physical routes are distributed to each BRAS node.
In a third aspect, a protection device for a network system for bearer scheduling of a data network is provided, where the protection device includes: a processor, and a memory storing computer program instructions; the processor, when reading and executing the computer program instructions, implements the method of protecting a network system for data network bearer scheduling in the second aspect or some implementations of the second aspect.
In a fourth aspect, a computer storage medium is provided, on which computer program instructions are stored, which, when executed by a processor, implement the method for protecting a network system for bearer scheduling of a data network in the second aspect or in some realizations of the second aspect.
The network system, the protection method, the equipment and the computer storage medium for data network load scheduling of the embodiment of the invention construct a novel network system for data network load scheduling by providing double uplink links for each OLT aggregation node to uplink to a BRAS node, can realize low-cost capacity expansion, and meet the high bandwidth requirement of a family broadband.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings may be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a network system for bearer scheduling of a data network according to an embodiment of the present invention;
fig. 2 is a schematic diagram of another network system for data network bearer scheduling according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another network system for data network bearer scheduling according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another network system for data network bearer scheduling according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a protection method of a network system for bearer scheduling of a data network according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a protection device of a network system for bearer scheduling of a data network according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.
An Optical Line Terminal (OLT) is connected to the customer premise equipment, and is used for accessing bandwidth services of the customer premise.
The aggregation OLT (or OLT aggregation node) includes a plurality of OLT nodes, and is configured to aggregate bandwidth services of a plurality of user terminals and transmit all the bandwidth services to the broadband access server.
A Broadband Access Server (BRAS) is a novel Access gateway for Broadband network applications, and is located at an edge layer of a backbone network, and is used for transmitting all bandwidth services transmitted by a converged OLT into the backbone network.
At present, the uplink of the OLT device to the BRAS in the urban area is usually carried by using OTN networking and Packet Transport Network (PTN) networking.
However, after implementing the broadband strategy in china, the bandwidth requirement of the broadband changes greatly, and the network architecture and the service carrying method in the prior art are difficult to adapt to the requirement of the bandwidth service:
the bandwidth requirement of an optical broadband single user is at least 100M, even the bandwidth requirement in an urban area reaches 1000M, which is 10 times that of the existing broadband user family, and the OTN networking needs to perform channel expansion to meet the high bandwidth requirement of 10G, but the channel expansion work of the OTN is difficult, the expansion cost is high, the coverage range is limited, and the high bandwidth requirement of the user family cannot be met. Likewise, the capacity of the existing convergence ring 100GE PTN ring is difficult to meet the high bandwidth requirement of at least 10G upstream to BRAS from the OLT in urban areas.
In order to solve the problem that a network architecture in the prior art cannot meet the high bandwidth requirement of a user, embodiments of the present invention provide a network system, a protection method, a device, and a computer storage medium for data network bearer scheduling. The technical solutions of the embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a network system for bearer scheduling of a data network according to an embodiment of the present invention, and as shown in fig. 1, the network system includes: the system comprises a plurality of OLT aggregation nodes, a plurality of broadband remote access server BRAS nodes and a plurality of through optical fibers (or through fiber cores).
The plurality of BRAS nodes comprise a first BRAS node and a second BRAS node.
Each OLT aggregation node is connected with a first BRAS node and a second BRAS node through a straight optical fiber to form a first optical cable loop.
Specifically, a first end of each OLT aggregation node is connected to a first BRAS node, and a second end of each OLT aggregation node is connected to a second BRAS node.
In one embodiment, the first BRAS node and the second BRAS node are respectively located in a first backbone building and a second backbone building, and a dual uplink link is provided for each OLT aggregation node to uplink to the BRAS node by establishing a through optical fiber to the first backbone building at a first end of each OLT aggregation node and establishing a through optical fiber to the second backbone building at a second end of each OLT aggregation node.
In one embodiment, both ends of each OLT aggregation node may be connected to the same BRAS node in both directions, for example, the first end is connected to the first BRAS node clockwise, and the second end is connected to the first BRAS node counterclockwise, forming a cable loop.
In one embodiment, in the design of the fiber core of the optical cable, a split fiber core is arranged between each OLT aggregation node, and each OLT aggregation node and each BRAS node are provided with two-way through optical fibers, so that flexible service scheduling and dual uplink protection are guaranteed.
In one embodiment, the optical cable loop can be a 96-144 core large core metro optical cable loop, the average number of optical fiber cores of each OLT aggregation node is 16-24 cores, and the capacity requirement of each OLT aggregation node 80G-120G can be supported.
It can be understood that, in order to meet different service requirements such as capacity expansion of an optical cable loop, the number of BRAS nodes and OLT aggregation nodes in the network system for data network bearer scheduling of the present invention may be changed correspondingly according to different service scenarios, which is not limited herein.
The network system for data network load scheduling of the embodiment of the invention provides double uplink links for a plurality of OLT aggregation nodes to uplink to the BRAS node, saves OTN channel resources and PTN circuit resources, realizes low-cost capacity expansion, and meets the high bandwidth requirement of a family broadband.
In one embodiment, when the OLT aggregation node in the first cable loop is too far from the BRSA node in the backbone building, other BRAS nodes may be sunk to some intermediate OLT aggregation node in the first cable loop.
Fig. 2 is a schematic diagram of another network system for bearer scheduling of a data network according to an embodiment of the present invention, and as shown in fig. 2, the network system includes: the system comprises a plurality of OLT aggregation nodes, a plurality of BRAS nodes and a plurality of straight-through optical fibers.
The plurality of OLT aggregation nodes comprise a first OLT aggregation node, and the plurality of BRAS nodes comprise a first BRAS node, a second BRAS node and a third BRAS node.
Specifically, when the distance between the first OLT aggregation node and the first BRAS node satisfies a first preset threshold, the first end of the first OLT aggregation node is connected with the third BRAS node through the through optical fiber, the second end of the first OLT aggregation node is connected with the second BRAS node through the through optical fiber, and a second optical cable loop is formed, wherein the distance between the first OLT aggregation node and the third BRAS node satisfies a second preset threshold.
In one embodiment, when the distance between the first OLT aggregation node and the first BRAS node exceeds 40KM, the BRAS node may be sunk to a certain intermediate OLT aggregation node, and the distance between the sunk BRAS node and the first aggregation node becomes shorter, at this time, the first end of the first OLT aggregation node is directly connected with the sunk BRAS node, and the connection state of the second end is unchanged.
It will be appreciated that as the BRAS node sinks to other OLT aggregation nodes in the later stages, the number of optical fibre cores in the cable loop is freely allocatable.
In one embodiment, the plurality of BRAS nodes may further include a fourth BRAS node, and when distances between the first OLT aggregation node and the first BRAS node and between the first OLT aggregation node and the second BRAS node both satisfy a first preset threshold, the first end of the first OLT aggregation node is connected to the third BRAS node through a pass-through optical fiber, and the second end of the first OLT aggregation node is connected to the fourth BRAS node through a pass-through optical fiber to form a third optical cable loop, where a distance between the first OLT aggregation node and the third BRAS node and the fourth BRAS node satisfies a second preset threshold.
In one embodiment, the plurality of OLT aggregation nodes further include a second OLT aggregation node, when distances between the second OLT aggregation node and the first BRAS node and between the second OLT aggregation node and the third BRAS node both satisfy a third preset threshold, a first end of the second OLT aggregation node is connected with the second BRAS node through a through optical fiber, and a second end of the second OLT aggregation node is connected with a fourth BRAS node through a through optical fiber to form a fourth optical cable loop, where distances between the second OLT aggregation node and the second BRAS node and between the second OLT aggregation node and the fourth BRAS node both satisfy the fourth preset threshold.
In the data network bearer scheduling network system of the embodiment of the invention, when any one of two links of the OLT aggregation node connected to the BRAS node is too long, the BRAS node can be sunk to a certain intermediate OLT aggregation node, and the OLT aggregation node is connected with the sunk BRAS node, so that flexible scheduling is realized, and optical fiber resources are saved.
In one embodiment, aiming at a large city, an annular OTN scheduling network or an MESH type OTN scheduling network is established between BRAS nodes in a backbone building and sunken BRAS nodes, optical cables of all OLT aggregation nodes are not required to be connected to the backbone building, and the OLT aggregation nodes can preferentially select the BRAS nodes which are close to each other in the OTN scheduling network to be connected, so that the safe and efficient scheduling of BRAS services is realized.
In one embodiment, the plurality of BRAS nodes include a first BRAS node, a second BRAS node, a third BRAS node, and a fourth BRAS node, and the first BRAS node, the second BRAS node, the third BRAS node, and the fourth BRAS node are connected in sequence to form a ring optical transport OTN scheduling network.
Fig. 3 is a schematic diagram of another network system for bearer scheduling of a data network according to an embodiment of the present invention, and as shown in fig. 3, the network system includes: the system comprises a plurality of OLT aggregation nodes, a plurality of BRAS nodes and a plurality of straight-through optical fibers.
The plurality of OLT aggregation nodes include 4 OLT aggregation nodes a1 and 4 OLT aggregation nodes a2, and the plurality of BRAS nodes include BRAS node B1, BRAS node B2, BRAS node B3, and BRAS node B4.
Specifically, a first end of each OLT aggregation node a1 is connected with a BRAS node B3, a second end of each OLT aggregation node a1 is connected with a BRAS node B4, a first end of each OLT aggregation node a2 is connected with a BRAS node B4, a second end of each OLT aggregation node a2 is connected with a BRAS node B2 to respectively form two optical cable loops, and the BRAS node B1, the BRAS node B2, the BRAS node B3 and the BRAS node B4 are sequentially connected to form a ring-shaped OTN scheduling network.
In one embodiment, based on the ring OTN scheduling network, the first BRAS node is connected with a third BRAS node, and the second BRAS node is connected with a fourth BRAS node, so as to form a MESH type OTN scheduling network.
Fig. 4 is a schematic diagram of another network system for data network bearer scheduling according to an embodiment of the present invention, and as shown in fig. 4, the network system includes: the system comprises a plurality of OLT aggregation nodes, a plurality of BRAS nodes and a plurality of straight-through optical fibers.
The plurality of OLT aggregation nodes include 4 OLT aggregation nodes a1 and 4 OLT aggregation nodes a2, and the plurality of BRAS nodes include BRAS node B1, BRAS node B2, BRAS node B3, and BRAS node B4.
Specifically, a first end of each OLT aggregation node a1 is connected with a BRAS node B3, a second end of each OLT aggregation node a1 is connected with a BRAS node B4, a first end of each OLT aggregation node a2 is connected with a BRAS node B4, a second end of each OLT aggregation node a2 is connected with a BRAS node B2 to respectively form two optical cable loops, the BRAS node B1, the BRAS node B2, the BRAS node B3 and the BRAS node B4 are sequentially connected, the BRAS node B1 is further connected with a BRAS node B3, and the BRAS node B2 is further connected with a BRAS node B4 to form a MESH-type OTN scheduling network.
The network system for data network bearing scheduling of the embodiment of the invention builds a special data scheduling network by using the optical cables, abandons the single optical cable or the fiber core of the convergence layer optical cable which is connected to the BRAS node by each OLT convergence node in the past, and can realize that all the OLT convergence nodes are doubly connected to the BRAS node by using the optical cable loop consisting of one optical cable, thereby saving the pipe hole, solving the problem of disordered networking and ensuring zero investment when the capacity is continuously expanded.
Fig. 5 is a schematic flowchart of a method for protecting a network system in bearer scheduling for a data network according to an embodiment of the present invention, and as shown in fig. 5, an execution subject of the method may be a protection device of the network system in bearer scheduling for the data network, and the method for protecting the network system in bearer scheduling for the data network may include the following steps:
s101, two different physical routes are distributed to each OLT aggregation node.
Specifically, the network system for data network bearer scheduling includes a plurality of OLT aggregation nodes, two different physical routes are allocated to each OLT aggregation node, and active-standby protection is performed on each OLT aggregation node according to the dual physical routes.
In one embodiment, the network system for data network bearer scheduling may further include a plurality of BRAS nodes, and when the plurality of BRAS nodes form a ring OTN scheduling network, two different physical routes may be allocated to each BRAS node, and when the plurality of BRAS nodes form a MESH OTN scheduling network, three different physical routes may be allocated to each BRAS node.
In one embodiment, the OLT aggregation node connects with the BRAS node via a dual physical route having two routing interfaces.
In one embodiment, performing active-standby protection on each OLT aggregation node according to dual physical routes includes: the main and standby protection of each OLT aggregation node is realized through a defined pair of double-route optical cables connected with 10G optical boards.
And S102, establishing a link aggregation group on each OLT aggregation node.
Link Aggregation (Link Aggregation), also called port Aggregation, refers to aggregating a plurality of physical ports together to form a logical port, that is, binding a plurality of ports with the same property of an ethernet switch together, and using the ports as a single port.
In one embodiment, after the link aggregation groups are established on each OLT aggregation node, the OLT aggregation node includes a first link aggregation group and a first ethernet port, and when receiving a (manual) aggregation command configured by an administrator, which ports join one link aggregation group, the first ethernet port is divided into the first link aggregation group according to the received aggregation command, and at the same time, the first ethernet ports in the first link aggregation group are dynamically backed up with each other.
It can be understood that link aggregation is equivalent to extension and replication of a single physical link to multiple links, so ports added to the same link aggregation group need to have the same port configuration attribute, otherwise, unstable factors may be brought to the working state after link aggregation.
In one embodiment, aggregating N ethernet ports into one link aggregation group may result in N times the bandwidth.
In an embodiment, after the Link Aggregation group is established on each OLT Aggregation node, the OLT Aggregation node includes a second Link Aggregation group and a second ethernet port, and may also perform dynamic Link Aggregation Control Aggregation according to a Link Aggregation Control Protocol (LACP), so as to dynamically determine the second ethernet port in the second Link Aggregation group.
In one embodiment, dynamically determining the second ethernet port in the second link aggregation group comprises: a dynamic determination is made as to which ethernet ports join the second link aggregation group and which ethernet ports leave the second link aggregation group.
In one embodiment, the link aggregation group includes a first link aggregation group and a second link aggregation group, the first ethernet port in the first link aggregation group still starts the LACP protocol, receives and transmits LACP messages, and when the first link aggregation group is deleted, the first ethernet port in the first link aggregation group is divided into the second link aggregation group according to the LACP protocol.
The method for protecting the network system for data network load scheduling of the embodiment of the invention can improve the connection bandwidth between devices and provide link backup and load sharing functions by establishing the link aggregation group, and the member ports of the link aggregation group carry out load sharing based on data streams (a batch of data sequences carrying the same task within a period of time).
Fig. 6 is a schematic hardware structural diagram of a protection device of a network system for data network bearer scheduling according to an embodiment of the present invention.
As shown in fig. 6, the protection device 200 of the network system for data network bearer scheduling in this embodiment includes an input device 201, an input interface 202, a central processor 203, a memory 204, an output interface 205, and an output device 206. The input interface 202, the central processing unit 203, the memory 204, and the output interface 205 are connected to each other through a bus 210, and the input device 201 and the output device 206 are connected to the bus 210 through the input interface 202 and the output interface 205, respectively, and further connected to other components of the device 200 with the adjusted number of threads.
Specifically, the input device 201 receives input information from the outside and transmits the input information to the central processor 203 through the input interface 202; the central processor 203 processes the input information based on computer-executable instructions stored in the memory 204 to generate output information, stores the output information temporarily or permanently in the memory 204, and then transmits the output information to the output device 206 through the output interface 205; the output device 206 outputs the output information to the outside of the protection device 200 of the network system for which the data network carries the scheduling for use by the user.
In one embodiment, the protection device 200 of the network system for data network bearer scheduling shown in fig. 6 includes: a memory 204 for storing programs; the processor 203 is configured to execute the program stored in the memory to perform the method of the embodiment shown in fig. 5 according to the embodiment of the present invention.
The embodiment of the invention also provides a computer storage medium, wherein the computer storage medium is stored with computer program instructions; which when executed by a processor, implement the method of the embodiment shown in fig. 5 provided by the embodiments of the present invention.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
The functional blocks shown in the above structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic Circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuits, semiconductor Memory devices, Read-Only memories (ROMs), flash memories, erasable ROMs (eroms), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As will be apparent to those skilled in the art, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (11)
1. A network system for data network bearing scheduling is characterized by comprising a plurality of Optical Line Terminal (OLT) aggregation nodes, a plurality of Broadband Remote Access Server (BRAS) nodes and a plurality of straight-through optical fibers;
the plurality of OLT aggregation nodes comprise a first OLT aggregation node;
the plurality of BRAS nodes comprise a first BRAS node, a second BRAS node and a third BRAS node;
each OLT aggregation node in the plurality of OLT aggregation nodes is connected with the first BRAS node and the second BRAS node through the straight optical fiber to form a first optical cable loop;
a first end of each OLT aggregation node is connected with the first BRAS node, and a second end of each OLT aggregation node is connected with the second BRAS node;
when the distance between the first OLT aggregation node and the first BRAS node meets a first preset threshold value, the first end of the first OLT aggregation node is connected with the third BRAS node through the through optical fiber, and the second end of the first OLT aggregation node is connected with the second BRAS node through the through optical fiber to form a second optical cable loop;
and the distance between the first OLT aggregation node and the third BRAS node meets a second preset threshold value.
2. The network system of claim 1, wherein the plurality of BRAS nodes further includes a fourth BRAS node;
when the distance between the first OLT aggregation node and the second BRAS node meets the first preset threshold value, the first end of the first OLT aggregation node is connected with the third BRAS node through the through optical fiber, and the second end of the first OLT aggregation node is connected with the fourth BRAS node through the through optical fiber to form a third optical cable loop;
and the distance between the first OLT aggregation node and the fourth BRAS node meets the second preset threshold value.
3. The network system according to claim 2, wherein the network system further comprises:
the first BRAS node, the second BRAS node, the third BRAS node and the fourth BRAS node are connected in sequence to form a ring Optical Transport (OTN) scheduling network.
4. The network system according to claim 3, wherein the network system further comprises:
based on the annular OTN scheduling network, the first BRAS node is connected with the third BRAS node, and the second BRAS node is connected with the fourth BRAS node, so that a MESH MESH type OTN scheduling network is formed.
5. The network system of claim 2, wherein the plurality of OLT aggregation nodes further comprises a second OLT aggregation node;
when the distance between a second OLT aggregation node in the plurality of OLT aggregation nodes and the first BRAS node and the distance between a third OLT aggregation node in the plurality of OLT aggregation nodes meet a third preset threshold value, a first end of the second OLT aggregation node is connected with the second BRAS node through the through optical fiber, and a second end of the second OLT aggregation node is connected with a fourth BRAS node through the through optical fiber to form a fourth optical cable loop;
and the distance between the second OLT aggregation node and the second BRAS node and the distance between the second OLT aggregation node and the fourth BRAS node both meet a fourth preset threshold value.
6. A method for protecting a network system for data network bearer scheduling, wherein the network system for data network bearer scheduling is the network system for data network bearer scheduling according to any one of claims 1 to 5, and the network system for data network bearer scheduling includes a plurality of OLT aggregation nodes and a plurality of BRAS nodes, and the method includes:
allocating two different physical routes for each OLT aggregation node, and performing active-standby protection on each OLT aggregation node according to the double physical routes;
establishing a link aggregation group on each OLT aggregation node; each link aggregation group comprises a plurality of Ethernet ports;
wherein the method further comprises:
when the plurality of BRAS nodes form a ring OTN scheduling network, allocating two different physical routes for each BRAS node;
and when the plurality of BRAS nodes form a MESH OTN scheduling network, distributing three different physical routes for each BRAS node.
7. The method according to claim 6, wherein after said establishing a link aggregation group at each OLT aggregation node, the method further comprises:
the link aggregation group comprises a first link aggregation group;
and dividing a plurality of first Ethernet ports into the first link aggregation group according to the received aggregation command, wherein the plurality of first Ethernet ports in the first link aggregation group are dynamically backed up with each other.
8. The method according to claim 6, wherein after said establishing a link aggregation group at each OLT aggregation node, the method further comprises:
the link aggregation group comprises a second link aggregation group;
and dynamically determining a second Ethernet port in the second link aggregation group according to a link aggregation control LACP protocol.
9. The method of claim 8, further comprising:
the link aggregation group comprises a first link aggregation group and a second link aggregation group, and the first link aggregation group comprises a first Ethernet port;
when the first link aggregation group is deleted, the first Ethernet port in the first link aggregation group is divided into the second link aggregation group according to the LACP protocol.
10. A protection device for a network system for bearer scheduling in a data network, the device comprising: a processor, and a memory storing computer program instructions;
the processor reads and executes the computer program instructions to implement the protection method of the data network bearer scheduled network system according to any of claims 6 to 9.
11. A computer storage medium, characterized in that the computer storage medium has stored thereon computer program instructions, which when executed by a processor, implement the protection method of a data network bearer scheduled network system according to any of claims 6 to 9.
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