CN112448838B - Traffic forwarding method, apparatus and computer readable storage medium - Google Patents

Traffic forwarding method, apparatus and computer readable storage medium Download PDF

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CN112448838B
CN112448838B CN201910835328.8A CN201910835328A CN112448838B CN 112448838 B CN112448838 B CN 112448838B CN 201910835328 A CN201910835328 A CN 201910835328A CN 112448838 B CN112448838 B CN 112448838B
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port
traffic
network
network slice
forwarding
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CN112448838A (en
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曾涛
刘刚
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0803Configuration setting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/38Flow based routing

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Abstract

The present disclosure relates to a traffic forwarding method, apparatus, and computer readable storage medium, and relates to the field of communication technologies. The method comprises the following steps: dividing a physical network into a plurality of mutually independent logic subnets; binding a logical subnet for each network slice; using the logic sub-network bound by each network slice, associating each network slice to the same physical uplink port; and utilizing the physical connection port to forward the relevant traffic of each network slice bidirectionally.

Description

Traffic forwarding method, apparatus and computer readable storage medium
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a traffic forwarding method, a traffic forwarding device, and a computer readable storage medium.
Background
With the development of network reconstruction and future network evolution, the network architecture will gradually realize network structure adjustment and virtualization in stages. At present, the current network service has high value government enterprise service products which are rapidly increased, and the optical access network has challenges in planning, operation and maintenance, user experience and the like. Personalized differences exist in business users, government enterprise users and home guest user services. The operation and maintenance management mode of the traditional OLT (Optical Line Terminal ) system has the problems of longer service opening period, low operation and maintenance efficiency, larger management difficulty and the like.
The network slicing technology can realize full utilization of resources, safety isolation and differentiated operation and maintenance bearing, and is beneficial to reducing the difficulty of resource planning and shortening the service issuing period. Therefore, the network slicing technology can provide flexible, fine and differential basis for the future network service development, and can meet the future SDN (Software Defined Network, software defined networking) virtualization and virtualization evolution direction.
In the related art, under the networking scheme of the existing system operation, a physical connection port is configured for each network slice
Disclosure of Invention
The inventors of the present disclosure found that the above-described related art has the following problems: the device ports are inefficient, resulting in inefficiency in the system.
In view of this, the present disclosure proposes a flow forwarding technical solution, which can improve the device port utilization rate, thereby improving the system efficiency.
According to some embodiments of the present disclosure, there is provided a traffic forwarding method, including: dividing a physical network into a plurality of mutually independent logic subnets; binding one of the logical subnets for each network slice; using logic subnets bound by each network slice, associating each network slice to the same physical connection port; and utilizing the physical connection port to forward the relevant traffic of each network slice in a bidirectional manner.
In some embodiments, said bi-directional forwarding of the associated traffic of each network slice using the physical port comprises: forwarding the bound relevant traffic of each network slice to the physical connection port through each logical subnetwork; and forwarding the relevant traffic of each network slice to upper-layer equipment by utilizing the physical connection port.
In some embodiments, the traffic forwarding method further includes: and configuring a unique subnet identifier of the whole network for each logic subnet so as to distinguish logic subnets bound by different network slices.
In some embodiments, said configuring a subnet identification unique to the whole network for each of said logical subnets comprises: and configuring the subnet identification of the logic subnet according to the identification of the network slice bound by the logic subnet or the identification of the virtual local area network corresponding to the logic subnet.
In some embodiments, the traffic forwarding method further includes: and configuring a protection uplink port for the physical uplink port to form a port aggregation group, wherein the protection uplink port is used for replacing the physical uplink port under the condition that the physical uplink port is abnormal or interrupted.
In some embodiments, said associating said network slices to the same physical port comprises: and associating the network slices to the same port aggregation group.
In some embodiments, said bi-directional forwarding of the associated traffic of each network slice using the physical port comprises: and forwarding the relevant traffic of each network slice bidirectionally by using the port aggregation group.
In some embodiments, said configuring the protection upstream ports for the physical upstream ports to form a port aggregation group comprises: and configuring the protection uplink port by utilizing the link aggregation function of the passive optical network.
According to further embodiments of the present disclosure, there is provided a traffic forwarding device including: the dividing unit is used for dividing the physical network into a plurality of mutually independent logic subnets; a binding unit, configured to bind one of the logical subnets for each network slice; the association unit is used for associating each network slice to the same physical uplink port by utilizing the logic subnetwork bound by each network slice; and the forwarding unit is used for forwarding the relevant traffic of each network slice bidirectionally by utilizing the physical connection port.
In some embodiments, the forwarding unit forwards the associated traffic of each network slice bound to the physical uplink port through each logical subnet, and forwards the associated traffic of each network slice to an upper layer device by using the physical uplink port.
In some embodiments, the traffic forwarding device further includes: and the configuration unit is used for configuring a unique subnet identifier of the whole network for each logic subnet so as to distinguish logic subnets bound by different network slices.
In some embodiments, the configuration unit configures a subnet identifier of the logical subnet according to an identifier of a network slice to which the logical subnet is bound or an identifier of a virtual local area network corresponding to the logical subnet.
In some embodiments, the traffic forwarding device further includes: and the configuration unit is used for configuring the protection uplink port for the physical uplink port to form a port aggregation group, and the protection uplink port is used for replacing the physical uplink port under the condition that the physical uplink port is abnormal or interrupted.
In some embodiments, the association unit associates the network slices to the same port aggregation group.
In some embodiments, the forwarding unit uses the port aggregation group to forward the relevant traffic of each network slice in two directions.
In some embodiments, the configuration unit configures the protection upstream port using a link aggregation function of a passive optical network.
According to still further embodiments of the present disclosure, there is provided a traffic forwarding device including: a memory; and a processor coupled to the memory, the processor configured to perform the traffic forwarding method of any of the embodiments described above based on instructions stored in the memory device.
According to still further embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the traffic forwarding method in any of the above embodiments.
According to still further embodiments of the present disclosure, there is provided a traffic forwarding system including: the traffic forwarding device in any of the above embodiments; and the optical line terminal equipment is provided with a physical connection port for bidirectional forwarding of the relevant traffic of each network slice.
In the above embodiment, the divided multiple logical subnets are utilized to associate each network slice to the same physical port for traffic forwarding. Thus, the port utilization of the device can be improved, thereby improving the system efficiency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 illustrates a flow chart of some embodiments of a traffic forwarding method of the present disclosure;
FIG. 2 illustrates a flow chart of some embodiments of step 140 in FIG. 1;
fig. 3 illustrates a schematic diagram of some embodiments of a traffic forwarding method of the present disclosure;
fig. 4 illustrates a block diagram of some embodiments of a traffic forwarding device of the present disclosure;
fig. 5 illustrates a block diagram of further embodiments of a flow forwarding device of the present disclosure;
fig. 6 illustrates a block diagram of still further embodiments of a flow forwarding device of the present disclosure;
fig. 7 illustrates blocks of some embodiments of the traffic forwarding system of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Current PON (Passive Optical Network ) systems need to have a complete set of upstream port networking mechanisms in the process of SDN evolution. Therefore, the method and the device can finally achieve the purposes of sharing one physical uplink port and protecting the uplink port by a plurality of network slices of the OLT network through the physical uplink port sharing of the OLT device.
In some embodiments, the physical uplink port sharing of the OLT device may be implemented through OLT forwarding mapping policy adjustment, and finally, the sharing of one physical uplink port and the protection of the uplink port by multiple network slices of the OLT network are completed. For example, the following embodiments may be employed.
Fig. 1 illustrates a flow chart of some embodiments of a traffic forwarding method of the present disclosure.
As shown in fig. 1, the method includes: step 110, dividing a logic subnet; step 120, binding a logic subnet; step 130, associating physical ports; and step 140, forwarding the relevant traffic.
In step 110, the physical network is divided into a plurality of mutually independent logical sub-networks. For example, the logical subnetwork is a virtual forwarding domain, and may be a traffic forwarding path formed by different virtual network elements. The logical subnetwork may include a subnetwork identification unique to the overall network and a forwarding flow table that may include a source MAC (Media Access Control Address ) address table and a destination MAC address table.
In step 120, a logical subnet is bound for each network slice.
In some embodiments, the network slicing techniques and applications of the optical access network are mainly embodied on the OLT apparatus. By virtualizing one physical OLT system into a plurality of network slices, the sharing of a plurality of key resources is realized. Therefore, the requirements of different service types, different customer differentiated services and independent operation and maintenance management can be met, and the maximization of the investment value is realized.
For example, the mapping rules of OLT forwarding domains may be adjusted, adding virtual forwarding domains between the network slices and the physical ports. Different network slices are provided with forwarding domains which the network slices belong to, each network slice corresponds to one forwarding domain one by one, and the forwarding domains are mutually independent and mutually isolated.
In some embodiments, a subnet identification unique to the whole network is configured for each logical subnet to distinguish between logical subnets bound by different network slices. The multiple forwarding domains can be identified and distinguished through unique identifiers, so that service isolation among the forwarding domains is realized, and the service isolation is not affected.
For example, a unique forwarding domain identification for the whole network may be determined by formulating a naming policy for the forwarding domain.
For example, the subnet identification of a logical subnet may be configured according to the identification of the corresponding virtual local area network of the logical subnet (i.e., the identification of the virtual local area network that carries traffic based on the network slice that is bound).
For example, the subnet identification of a logical subnet may be configured according to the identification of the network slice to which the logical subnet is bound.
In step 130, each network slice is associated to the same physical port using the logical subnetwork to which each network slice is bound. For example, the OLT forwarding mapping policy may be configured to be: each network slice is mapped to a corresponding forwarding domain, and each forwarding domain is mapped to the same physical port, so that multiplexing of one physical port for a plurality of network slices is realized.
In some embodiments, the protection upstream ports are configured for physically upstream ports to form a port aggregation group, and the network slices are associated to the same port aggregation group. For example, a port aggregation group may include one physical uplink port and one protection uplink port. The protection uplink port is used for replacing the physical uplink port under the condition that the physical uplink port is abnormal or interrupted.
In some embodiments, the protection uplink port may be configured with a link aggregation function of the passive optical network. For example, PON devices may implement uplink protection by means of a "link aggregation" function, where a port aggregation group is a protection group formed by combining physical ports selected in a link aggregation configuration process. Under the scene that a plurality of network slices share the same uplink physical port, the sharing of the protection ports can be realized at the same time. For example, the port aggregation group may configure the shared physical (working) and protection upstream ports as one port aggregation group, thereby improving physical port utilization.
In some embodiments, the protection of the upstream ports may protect the upstream in the form of load sharing. For example, the load sharing ratio (such as the workload traffic ratio) of the physical uplink port and the protection uplink port can be configured as 5: 5. 7: 3. 8:2, etc.
In step 140, the associated traffic for each network slice is bi-directionally forwarded using the physically associated ports. Bidirectional forwarding is uplink and downlink forwarding, for example, uplink forwarding is that traffic of each network slice is sent to each logic subnet bound and then to the same physical uplink port; and the downlink forwarding is that the traffic of the same physical uplink port is sent to each logic subnet and then to each bound network slice. For example, traffic forwarding may be implemented using the embodiment of fig. 2.
Fig. 2 shows a flow chart of some embodiments of step 140 in fig. 1.
As shown in fig. 2, step 140 includes: step 1410, forwarding traffic to a physical port; step 1420, forward traffic to upper layer devices.
In step 1410, the associated traffic of each network slice bound is forwarded to the physical port through each logical subnet.
In step 1420, the associated traffic for each network slice is forwarded to the upper layer device using the physical connection port.
In some embodiments, port aggregation groups may be utilized to bi-directionally forward relevant traffic for each network slice. That is, the uplink and downlink services of the plurality of network slices can forward the normal service through two ports in the same port aggregation group, so that the physical connection port sharing is realized, and the port utilization rate of the OLT equipment and the upper aggregation equipment is improved.
Fig. 3 illustrates a schematic diagram of some embodiments of a traffic forwarding method of the present disclosure.
As shown in fig. 3, the OLT network has a total of 3 network slices: network slice 31, network slice 32, network slice 33. The physical network may be divided into 3 logical subnets: logical subnetwork 311, logical subnetwork 321, logical subnetwork 331. An OLT forwarding mapping policy may be configured to bind the network slice 31 with the logical subnetwork 311; binding the network slice 32 with the logical subnet 321; the network slice 33 is bound to the logical subnet 331.
The OLT apparatus has a port aggregation group 34, for example, the port aggregation group 34 may be provided on an upper header card of the OLT apparatus. The port aggregation group 34 has a physical uplink port 341 and a protection uplink port 342. OLT forwarding mapping policies may be configured to associate logical subnetwork 311, logical subnetwork 321, logical subnetwork 331 to port aggregation group 34.
Network slice 31, network slice 32, network slice 33 may forward traffic to port aggregation group 34 through logical subnetwork 311, logical subnetwork 321, logical subnetwork 331, respectively; the OLT apparatus forwards the traffic to the port aggregation group 35 of the upper aggregation device through the physical uplink port 341 or the protection uplink port 342 in the port aggregation group 34. For example, the aggregation device may be a switch, a broadband remote access server, or a multi-service edge router, etc.
The upper layer aggregation device may forward the traffic to the port aggregation group 34 of the OLT device through the port aggregation group 35; the OLT device forwards the traffic to the logical subnetwork 311, the logical subnetwork 321, and the logical subnetwork 331 through the physical uplink port 341 or the protection uplink port 342; finally, the traffic is forwarded to the corresponding network slice 31, network slice 32, network slice 33 through logical subnetwork 311, logical subnetwork 321, logical subnetwork 331.
Therefore, a plurality of network slices of the OLT network can forward the traffic without mutual interference only by using one main working physical uplink port and one protection uplink port, thereby realizing the energy saving of the OLT system. And by adjusting the forwarding mapping strategy of the OLT, the sharing of the physical uplink ports of the OLT is realized, and the sharing of one physical uplink port and the protection of the uplink port of a plurality of network slices of the OLT are completed, so that the utilization rate of ports of the OLT and upper-layer convergence equipment is improved.
In the above embodiment, the divided multiple logical subnets are utilized to associate each network slice to the same physical port for traffic forwarding. Thus, the port utilization of the device can be improved, thereby improving the system efficiency.
Fig. 4 illustrates a block diagram of some embodiments of a traffic forwarding device of the present disclosure.
As shown in fig. 4, the flow forwarding device 4 includes: a dividing unit 41, a binding unit 42, an associating unit 43, a forwarding unit 44.
The dividing unit 41 divides the physical network into a plurality of logical sub-networks independent of each other. Binding unit 42 binds one logical subnet for each network slice. The association unit 43 associates each network slice to the same physical port using the logical subnetwork to which each network slice is bound. Forwarding unit 44 utilizes physically coupled ports to forward relevant traffic for each network slice bi-directionally.
In some embodiments, the forwarding unit forwards the associated traffic of each network slice bound to a physical connection port through each logical subnet 44, and forwards the associated traffic of each network slice to the upper layer device using the physical connection port.
In some embodiments, the traffic forwarding device 4 further comprises a configuration unit 45. The configuration unit 45 configures a subnet identifier unique to the whole network for each logical subnet in order to distinguish logical subnets bound by different network slices. For example, the configuration unit 45 configures the subnet identifier of the logical subnet according to the identifier of the network slice to which the logical subnet is bound or the identifier of the virtual local area network corresponding to the logical subnet.
In some embodiments, configuration unit 45 configures protection upstream ports for the physical upstream ports to form a port aggregation group. The protection uplink port is used for replacing the physical uplink port under the condition that the physical uplink port is abnormal or interrupted. For example, the configuration unit 45 configures the protection uplink port using a link aggregation function of the passive optical network.
In some embodiments, the association unit 43 associates each network slice to the same port aggregation group, and the forwarding unit 44 uses the port aggregation group to forward the relevant traffic of each network slice bi-directionally.
In the above embodiment, the divided multiple logical subnets are utilized to associate each network slice to the same physical port for traffic forwarding. Thus, the port utilization of the device can be improved, thereby improving the system efficiency.
Fig. 5 illustrates a block diagram of further embodiments of a flow forwarding device of the present disclosure.
As shown in fig. 5, the flow forwarding device 5 of this embodiment includes: a memory 51 and a processor 52 coupled to the memory 51, the processor 52 being configured to perform the traffic forwarding method in any of the embodiments of the present disclosure based on instructions stored in the memory 51.
The memory 51 may include, for example, a system memory, a fixed nonvolatile storage medium, and the like. The system memory stores, for example, an operating system, application programs, boot Loader (Boot Loader), database, and other programs.
Fig. 6 illustrates a block diagram of still further embodiments of the flow forwarding device of the present disclosure.
As shown in fig. 6, the flow forwarding device 6 of this embodiment includes: a memory 610 and a processor 620 coupled to the memory 610, the processor 620 being configured to perform the traffic forwarding method of any of the previous embodiments based on instructions stored in the memory 610.
The memory 610 may include, for example, system memory, fixed nonvolatile storage media, and the like. The system memory stores, for example, an operating system, application programs, boot Loader (Boot Loader), and other programs.
The traffic forwarding device 6 may also include an input-output interface 630, a network interface 640, a storage interface 650, etc. These interfaces 630, 640, 650 and the memory 610 and processor 620 may be connected by, for example, a bus 660. The input/output interface 630 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. Network interface 640 provides a connection interface for various networking devices. The storage interface 650 provides a connection interface for external storage devices such as SD cards, U-discs, and the like.
Fig. 7 illustrates a block diagram of some embodiments of a traffic forwarding system of the present disclosure.
As shown in fig. 7, the traffic forwarding system 7 includes: the flow forwarding device 71 in any of the above embodiments; and an optical line termination device 72. The optical line termination device 72 has a physical port for bi-directional forwarding of the associated traffic for each network slice.
It will be appreciated by those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
Heretofore, a flow forwarding method, a flow forwarding apparatus, and a computer-readable storage medium according to the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
The methods and systems of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, firmware. The above-described sequence of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the sequence specifically described above unless specifically stated otherwise. Furthermore, in some embodiments, the present disclosure may also be implemented as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (15)

1. A traffic forwarding method, comprising:
dividing a physical network into a plurality of mutually independent logic subnets;
binding one of the logical subnets for each network slice;
using logic subnets bound by each network slice, associating each network slice to the same physical connection port;
the same physical connection port is utilized to carry out bidirectional forwarding on the relevant traffic of each network slice;
wherein said associating said network slices to a same physical port comprises:
mapping each network slice to a bound logical subnet;
mapping each logical subnet to the same physical port.
2. The traffic forwarding method according to claim 1, wherein said bi-directionally forwarding the relevant traffic of each network slice using the physical uplink port comprises:
forwarding the bound relevant traffic of each network slice to the physical connection port through each logical subnetwork;
and forwarding the relevant traffic of each network slice to upper-layer equipment by utilizing the physical connection port.
3. The traffic forwarding method of claim 1, further comprising:
and configuring a unique subnet identifier of the whole network for each logic subnet so as to distinguish logic subnets bound by different network slices.
4. A traffic forwarding method according to claim 3, wherein said configuring a subnet identification unique to a full network for each of said logical subnets comprises:
and configuring the subnet identification of the logic subnet according to the identification of the network slice bound by the logic subnet or the identification of the virtual local area network corresponding to the logic subnet.
5. The traffic forwarding method according to any one of claims 1-4, further comprising:
configuring a protection uplink port for the physical uplink port to form a port aggregation group, wherein the protection uplink port is used for replacing the physical uplink port under the condition that the physical uplink port is abnormal or interrupted;
wherein said associating said network slices to a same physical port comprises:
associating the network slices to the same port aggregation group;
the bidirectional forwarding of the related traffic of each network slice by using the physical connection port includes:
and forwarding the relevant traffic of each network slice bidirectionally by using the port aggregation group.
6. The traffic forwarding method of claim 5, wherein the configuring the protection upstream ports for the physical upstream ports to form a port aggregation group comprises:
and configuring the protection uplink port by utilizing the link aggregation function of the passive optical network.
7. A traffic forwarding device comprising:
the dividing unit is used for dividing the physical network into a plurality of mutually independent logic subnets;
a binding unit, configured to bind one of the logical subnets for each network slice;
the association unit is used for associating each network slice to the same physical uplink port by utilizing the logic subnetwork bound by each network slice;
a forwarding unit, configured to forward the relevant traffic of each network slice in two directions by using the same physical uplink port;
wherein said associating said network slices to a same physical port comprises:
mapping each network slice to a bound logical subnet;
mapping each logical subnet to the same physical port.
8. The traffic forwarding device according to claim 7, wherein,
and the forwarding unit forwards the related traffic of each network slice bound to the physical uplink port through each logic subnet, and forwards the related traffic of each network slice to upper-layer equipment by using the physical uplink port.
9. The traffic forwarding device of claim 7, further comprising:
and the configuration unit is used for configuring a unique subnet identifier of the whole network for each logic subnet so as to distinguish logic subnets bound by different network slices.
10. The traffic forwarding device according to claim 9, wherein,
the configuration unit configures the subnet identification of the logic subnet according to the identification of the network slice bound by the logic subnet or the identification of the virtual local area network corresponding to the logic subnet.
11. The traffic forwarding device of claim 7, further comprising:
a configuration unit, configured to configure a protection uplink port for the physical uplink port to form a port aggregation group, where the protection uplink port is used to replace the physical uplink port in case of abnormality or interruption of the physical uplink port;
wherein,,
the association unit associates each network slice to the same port aggregation group;
and the forwarding unit utilizes the port aggregation group to forward the relevant traffic of each network slice bidirectionally.
12. The traffic forwarding device according to claim 11, wherein,
the configuration unit utilizes the link aggregation function of the passive optical network to configure the protection uplink port.
13. A traffic forwarding device comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the traffic forwarding method of any of claims 1-6 based on instructions stored in the memory device.
14. A computer readable storage medium having stored thereon a computer program which when executed by a processor implements the traffic forwarding method of any of claims 1-6.
15. A traffic forwarding system, comprising:
the traffic forwarding device of any of claims 7-13; and
and the optical line terminal equipment is provided with a physical connection port for bidirectional forwarding of relevant traffic of each network slice.
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