CN110677918A - Link state information forwarding method, system and device - Google Patents
Link state information forwarding method, system and device Download PDFInfo
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- CN110677918A CN110677918A CN201810713498.4A CN201810713498A CN110677918A CN 110677918 A CN110677918 A CN 110677918A CN 201810713498 A CN201810713498 A CN 201810713498A CN 110677918 A CN110677918 A CN 110677918A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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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]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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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]
Abstract
The disclosure provides a link state information forwarding method, a link state information forwarding device and a computer readable storage medium, and relates to the field of data communication. The link state information forwarding method comprises the following steps: according to the intermediate system IS reachability type length value TLV, defining an intermediate system to intermediate system ISIS extended attribute aiming at a flexible Ethernet Flexe interface so as to carry Flexe link state information; the network element identifies Flexe link state information according to the LSP message of the ISIS label switched path; an end-to-end FlexE link channel is established through flooding and synchronization of FlexE link state information. The method and the device carry FlexeE link state information in the network LSP message through a routing protocol to carry out flooding and synchronization, and realize the establishment of a network end-to-end FlexeE link channel.
Description
Technical Field
The present disclosure relates to the field of link state information forwarding technologies, and in particular, to a method, a system, an apparatus, and a computer-readable storage medium for forwarding link state information.
Background
With the application of 5G communication network deployment, since it is difficult to implement an independent network for each service scenario, it is gradually a trend to carry 5G network services through network fragmentation.
FlexE is an interface technology for realizing service isolation bearer and network fragmentation in a bearer network, and can divide a physical ethernet port into a plurality of ethernet elastic hard pipeline ports based on time slot scheduling. How to realize the establishment of end-to-end Flexe link channels of the network is an important problem to be solved by network fragmentation.
Disclosure of Invention
One technical problem solved by the present disclosure is how to implement establishment of a network end-to-end FlexE link channel.
According to an aspect of the embodiments of the present disclosure, a method for forwarding link state information is provided, including: according to the intermediate system IS reachability type length value TLV, defining an intermediate system to intermediate system ISIS extended attribute aiming at a flexible Ethernet Flexe interface so as to carry Flexe link state information; the network element identifies Flexe link state information according to the LSP message of the ISIS label switched path; an end-to-end FlexE link channel is established through flooding and synchronization of FlexE link state information.
In some embodiments, defining an intermediate system to intermediate system ISIS extension attribute for a flexible ethernet FlexE interface comprises: adding a Flexe exchange object, a Flexe coding identifier and a sub-TLV; the Flexe exchange object represents that a Flexe network exchange type is adopted, Flexe coding identification represents an encoding mode adopted by an interface, and the sub-TLV represents a presentation format of data with Flexe characteristic requirements.
In some embodiments, the sub-TLVs include a FlexE interface type identification, length, bandwidth granularity attributes, and port priority control information; the bandwidth granularity attribute represents the granularity of the bandwidth in the Flexe interface and is used for determining the bandwidth used by a network slice or a Flexe link; the port priority control information is used to determine a port priority corresponding to a network performance guarantee requirement in the network slice.
In some embodiments, the link state information forwarding method further includes: distributing two-dimensional identification to the network slice, wherein the two-dimensional identification comprises a network slice type identification and a network slice difference identification, the network slice type identification represents a service scene borne by the network slice, and the network slice difference identification is used for representing different virtual private network VPN examples; after a Flexe link channel is established, a corresponding network slice type identifier is determined according to a service scene of a user, and service flows of different users are introduced into corresponding VPN examples of network slices of corresponding types so as to isolate different users.
According to another aspect of the embodiments of the present disclosure, there is provided a link state information forwarding apparatus including: the attribute definition module IS configured to define an intermediate system to intermediate system ISIS extended attribute aiming at a flexible Ethernet Flexe interface according to an intermediate system IS reachability type length value TLV so as to carry Flexe link state information; and the information identification module is configured to identify the Flexe link state information according to the ISIS Label Switched Path (LSP) message so as to flood and synchronize the Flexe link state.
In some embodiments, the attribute definition module is configured to: adding a Flexe exchange object, a Flexe coding identifier and a sub-TLV; the Flexe exchange object represents that a Flexe network exchange type is adopted, Flexe coding identification represents an encoding mode adopted by an interface, and the sub-TLV represents a presentation format of data with Flexe characteristic requirements.
In some embodiments, the sub-TLVs include a FlexE interface type identification, length, bandwidth granularity attributes, and port priority control information; the bandwidth granularity attribute represents the granularity of the bandwidth in the Flexe interface and is used for determining the bandwidth used by a network slice or a Flexe link; the port priority control information is used to determine a port priority corresponding to a network performance guarantee requirement in the network slice.
In some embodiments, the link state information forwarding device further comprises an identification assignment module configured to: distributing two-dimensional identification to the network slice, wherein the two-dimensional identification comprises a network slice type identification and a network slice difference identification, the network slice type identification represents a service scene borne by the network slice, and the network slice difference identification is used for representing different virtual private network VPN examples; after a Flexe link channel is established, a corresponding network slice type identifier is determined according to a service scene of a user, and service flows of different users are introduced into corresponding VPN examples of network slices of corresponding types so as to isolate different users.
According to still another aspect of the embodiments of the present disclosure, there is provided a link state information forwarding apparatus including: a memory; and a processor coupled to the memory, the processor configured to execute the aforementioned link state information forwarding method based on instructions stored in the memory.
According to still another aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the instructions, when executed by a processor, implement the aforementioned link state information forwarding method.
The method and the device carry FlexeE link state information in the network LSP message through a routing protocol to carry out flooding and synchronization, and realize the establishment of a network end-to-end FlexeE link channel.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 shows a flowchart of a link state information forwarding method according to an embodiment of the present disclosure.
Fig. 2 shows a schematic diagram of ISIS extension attributes defined for the flexible ethernet FlexE interface according to the IS accessibility TLV.
Fig. 3 shows a schematic diagram of a defined sub-TLV.
Fig. 4 shows a schematic diagram of a 4G network bearer scheme.
Fig. 5 shows a schematic diagram of a 5G slice network bearer scheme.
Fig. 6 is a schematic structural diagram of a link state information forwarding apparatus according to an embodiment of the present disclosure.
Fig. 7 is a schematic structural diagram of a link state information forwarding apparatus according to another embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The inventor researches and discovers that the following problems mainly exist at present for the isolation of the bearer network for 5G services and the fragmentation of the FlexE (Flex Ethernet) network: the existing Network is based on VPN (Virtual Private Network) Virtual routing isolation service, and does not have end-to-end management capability of Flexe Network slice; FlexE is only an interface technology for network fragmentation, and currently, no FlexE TE (Traffic Engineering) link state information notification is implemented through a signaling layer or a routing protocol.
In view of this, the present disclosure provides a FlexE link state information forwarding scheme based on IS-IS (Intermediate System-to-Intermediate System) protocol extension, which implements an LSP (Label Switching Path) end-to-end slice forwarding Path in a network with FlexE characteristics by newly defining an extended ISIS protocol TLV to carry and flood FlexE link state information.
A link state information forwarding method according to an embodiment of the present disclosure is described below with reference to fig. 1.
Fig. 1 shows a flowchart of a link state information forwarding method according to an embodiment of the present disclosure. As shown in fig. 1, the link state information forwarding method of this embodiment includes steps S102 to S106.
In step S102, according to the intermediate system IS reachability type length value TLV, an intermediate system to intermediate system ISIS extension attribute IS defined for the flexible ethernet FlexE interface to carry FlexE link state information.
Fig. 2 shows a schematic diagram of ISIS extension attributes defined for the flexible ethernet FlexE interface according to the IS accessibility TLV. As shown in fig. 2, for the FlexE interface newly added exchange capability identification field, the exchange capability identification field specifically includes an added FlexE Switching (FlexE exchange object), a FlexE Encoding (FlexE Encoding identification), and a Sub-TLV format (Sub-TLV) supporting the FlexE interface. The Flexe exchange object represents that a Flexe network exchange type is adopted, Flexe coding identification represents an encoding mode adopted by an interface, and the sub-TLV represents a presentation format of data with Flexe characteristic requirements. The attribute object has the characteristics of flexibility, selectivity and support of ISIS LSP message, and is used for transmitting Flexe link state information. The values of The FlexE Types attribute extended by The ISIS protocol may be specifically assigned by IANA (The Internet assigned numbers Authority).
Figure 3 shows a schematic diagram of a defined Sub-TLV. As shown in fig. 3, a new Sub-TLV FlexE interface type format IS defined in the IS accessibility TLV format, and the Sub-TLV may specifically include FlexE interface type identifier, length, bandwidth granularity attribute, and port priority control information.
The granularity of bandwidth, granularity, represents the granularity of bandwidth of a FlexE interface (currently, the minimum bandwidth granularity is 5G), and is used to determine the bandwidth used by a network slice or a FlexE link, for example, a network slice needs 10GE (or 20GE) bandwidth requirements, and it can be implemented by configuring granularity to 10GE (or 20GE) in a network node or a controller and sending the granularity to a device.
The port priority control information is used to determine a port priority corresponding to a network performance guarantee requirement in the network slice, that is, the network slice may bind with the defined interface block according to the priority of the traffic. Sub-TLVs, which are a subclass of ISreachability TLVs, can identify the presentation format of data with FlexE property requirements, such as FlexE interface bandwidth selection, slice block priority, FlexE port client binding, etc. The available time slots with different priorities in fig. 3 are used for controlling the port priorities in the network slice, and for different priorities, which priority is used can be determined according to the network reliability guarantee (e.g. delay, packet loss) requirement, and the priority is similar to the ethernet priority. Only 8 identifiers which can be used for the priority of the identifiers are given here, and the specific determination scheme can be redefined among the 8 priority identifiers.
In step S104, the network element identifies FlexE link state information according to the ISIS label switched path LSP message.
For example, the network node or the controller may identify information such as FlexESwitching Type identifier and Sub-TLV in the network according to the ISIS LSP packet message, and perform flooding and synchronization of the FlexE link state. The ISIS LSP message is a label forwarding message based on ISIS routing protocol extension, the ISIS routing information carries corresponding attribute values in the link state release process, Flexe related messages are defined by extending the ISIS attribute, and the link state release in a network slice using scene can carry the defined Flexe network slice information.
In step S106, an end-to-end FlexE link channel is established through flooding and synchronization of FlexE link state information.
In the link notification and forwarding process, the LSP TE carries FlexE interface connection state information, forwards the information to each network node or controller through the ISIS Protocol, and then establishes an ISIS-based LSP forwarding path through an MPLS (Multi-Protocol Label Switching) network. The controller collects topology and link state information of the whole network based on an SDN (Software defined network) integrated controller, then calculates link states of the whole network, and sends information corresponding to the calculated links to network equipment, so that end-to-end superposition Flexe link channel establishment of the whole network is completed.
In the above embodiment, the establishment of the end-to-end FlexE link channel and the end-to-end network slice bearer are realized by extending the TLV attribute through the ISIS and carrying the FlexE link state information in the network LSP packet through the routing protocol for flooding and synchronization.
The inventors have also studied the main features of the 4G network bearer scheme. Fig. 4 shows a schematic diagram of a 4G network bearer scheme. As shown in fig. 4, the 4G network mainly serves people, the main device connected to the network is a smart phone, and network slicing is not needed to face different application scenarios, so that isolation of the 4G base station service can be achieved by using a simple unified VPN, but the requirement of the 5G network for isolation of the bearer based on the service network slicing hard pipeline is not met. In view of this, the 5G network needs to implement FlexE end-to-end link data forwarding with service hard channel isolation through existing service physical isolation and interface bundling. A link state information forwarding method according to another embodiment of the present disclosure is described below.
As shown in fig. 1, after step S106, the link state information forwarding method in this embodiment further includes step S108 to step S110.
In step S108, two-dimensional identifiers are allocated to the network slices, where the two-dimensional identifiers include a network slice type identifier and a network slice difference identifier, the network slice type identifier represents a service scenario carried by the network slice, and the network slice difference identifier is used to represent different VPN instances in the virtual private network.
Fig. 5 shows a schematic diagram of a 5G slice network bearer scheme. As shown in fig. 5, different devices in different fields access a large number of networks, and the networks are mainly oriented to three types of application scenarios: the method comprises the steps of moving large bandwidth, massive Internet of things and high reliability and ultralow time delay, defining new network Slice two-dimensional identifications aiming at different service scenes, and mainly comprising network Slice Type identifications Slice types and network Slice Difference identifications Slice differences. The network Slice type identification corresponds to different network slices respectively and is used for identifying three scenes of enhanced mobile broadband eMBB, ultra-high reliability low time delay uRLLC and massive machine type communication of the Internet of things, a new scene can be added according to requirements subsequently, and Slice Difference is used for identifying VPN examples and realizing isolation among different users. And establishing a completely isolated hardware resource channel by using Flexe LSP information, and ensuring SLA (Service-Level agent).
In step S110, after the FlexE link channel is established, the corresponding network slice type identifier is determined according to the service scenario of the user, and the service traffic of different users is introduced into the corresponding VPN instances of the network slices of the corresponding type, so as to isolate different users.
Through the Flexe technology, after network slice two-dimensional identification is distributed to network slices defined by different service requirements, services similar to VPN soft isolation can also be operated in the network slices. If the user has special needs, a network slice can be provided for one user independently, namely only one user in one network slice is used, and different users of the same service do not need to be isolated through VPN.
The embodiment provides the state information forwarding of the FlexeE TE link between network nodes by extending TLV message attributes through an ISIS protocol, realizes an end-to-end FlexeE forwarding link which can meet the physical isolation of the service, improves the end-to-end management of network slices, and enhances the isolation and bearing of the service, aiming at the problems that the existing VPN virtual private network mainly realizes the isolation of user service through VPN, does not have the physical hard isolation of a channel, the fragmentation and the bearing of the network and the like. The classification, isolation and bearing one-to-one correspondence of the hard pipeline and the service can be realized through the organic combination of the network slice identification and the protocol extension, and the realization of the service network slice is ensured.
Meanwhile, the embodiment is low in modification difficulty and easy to implement under the existing network architecture, only TLV attributes need to be expanded in an ISIS routing protocol, an end-to-end Flexe forwarding channel can be established through a control layer based on a defined service identifier, service physical isolation and interface binding are realized, Flexe end-to-end link data forwarding of service hard channel isolation is met, and the method plays an important role in 5G multi-service network slice bearing and Flexe network fragmentation.
The structure of the link-state information forwarding apparatus according to an embodiment of the present disclosure is described below with reference to fig. 6.
Fig. 6 is a schematic structural diagram of a link state information forwarding apparatus according to an embodiment of the present disclosure. As shown in fig. 6, the link-state information forwarding apparatus 60 of this embodiment includes:
an attribute definition module 602, configured to define an intermediate system to intermediate system ISIS extension attribute for a flexible ethernet FlexE interface according to an intermediate system IS reachability type length value TLV to carry FlexE link state information;
an information identifying module 604 configured to identify FlexE link state information according to the ISIS label switched path LSP packet message, so as to perform flooding and synchronization of the FlexE link state.
In the above embodiment, the establishment of the end-to-end FlexE link channel and the end-to-end network slice bearer are realized by extending the TLV attribute through the ISIS and carrying the FlexE link state information in the network LSP packet through the routing protocol for flooding and synchronization.
In some embodiments, the attribute definition module 602 is configured to: adding a Flexe exchange object, a Flexe coding identifier and a sub-TLV; the Flexe exchange object represents that a Flexe network exchange type is adopted, Flexe coding identification represents an encoding mode adopted by an interface, and the sub-TLV represents a presentation format of data with Flexe characteristic requirements.
In some embodiments, the sub-TLVs include a FlexE interface type identification, length, bandwidth granularity attributes, and port priority control information; the bandwidth granularity attribute represents the granularity of the bandwidth in the Flexe interface and is used for determining the bandwidth used by a network slice or a Flexe link; the port priority control information is used to determine a port priority corresponding to a network performance guarantee requirement in the network slice.
In some embodiments, link state information forwarding device 60 further includes an identification assignment module 606 configured to: distributing two-dimensional identification to the network slice, wherein the two-dimensional identification comprises a network slice type identification and a network slice difference identification, the network slice type identification represents a service scene borne by the network slice, and the network slice difference identification is used for representing different virtual private network VPN examples; after a Flexe link channel is established, a corresponding network slice type identifier is determined according to a service scene of a user, and service flows of different users are introduced into corresponding VPN examples of network slices of corresponding types so as to isolate different users.
The embodiment provides the state information forwarding of the FlexeE TE link between network nodes by extending TLV message attributes through an ISIS protocol, realizes an end-to-end FlexeE forwarding link which can meet the physical isolation of the service, improves the end-to-end management of network slices, and enhances the isolation and bearing of the service, aiming at the problems that the existing VPN virtual private network mainly realizes the isolation of user service through VPN, does not have the physical hard isolation of a channel, the fragmentation and the bearing of the network and the like. The classification, isolation and bearing one-to-one correspondence of the hard pipeline and the service can be realized through the organic combination of the network slice identification and the protocol extension, and the realization of the service network slice is ensured.
Meanwhile, the embodiment is low in modification difficulty and easy to implement under the existing network architecture, only TLV attributes need to be expanded in an ISIS routing protocol, an end-to-end Flexe forwarding channel can be established through a control layer based on a defined service identifier, service physical isolation and interface binding are realized, Flexe end-to-end link data forwarding of service hard channel isolation is met, and the method plays an important role in 5G multi-service network slice bearing and Flexe network fragmentation.
Fig. 7 is a schematic structural diagram of a link state information forwarding apparatus according to another embodiment of the present disclosure. As shown in fig. 7, the link-state information forwarding apparatus 70 of this embodiment includes: a memory 710 and a processor 720 coupled to the memory 710, the processor 720 being configured to execute the link state information forwarding method in any of the foregoing embodiments based on instructions stored in the memory 710.
Link state information forwarding device 70 may also include input output interface 730, network interface 740, storage interface 750, and the like. These interfaces 730, 740, 750, as well as the memory 710 and the processor 720, may be connected, for example, by a bus 760. The input/output interface 730 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 740 provides a connection interface for various networking devices. The storage interface 750 provides a connection interface for external storage devices such as an SD card and a usb disk.
The present disclosure also includes a computer readable storage medium having stored thereon computer instructions that, when executed by a processor, implement the link state information forwarding method in any of the foregoing embodiments.
As will be appreciated by one skilled in the art, 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, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A method for forwarding link state information comprises the following steps:
according to the intermediate system IS reachability type length value TLV, defining an intermediate system to intermediate system ISIS extended attribute aiming at a flexible Ethernet Flexe interface so as to carry Flexe link state information;
the network element identifies Flexe link state information according to the LSP message of the ISIS label switched path;
an end-to-end FlexE link channel is established through flooding and synchronization of FlexE link state information.
2. The link state information forwarding method of claim 1, wherein the defining an intermediate system to intermediate system ISIS extension attribute for a flexible ethernet FlexE interface comprises:
adding a Flexe exchange object, a Flexe coding identifier and a sub-TLV;
the Flexe exchange object representation adopts a Flexe network exchange type, the Flexe coding identification represents a coding mode adopted by an interface, and the sub-TLV represents a presentation format of data with Flexe characteristic requirements.
3. The link state information forwarding method according to claim 2, wherein the sub-TLV includes a FlexE interface type identifier, a length, a bandwidth granularity attribute, and port priority control information;
the bandwidth granularity attribute represents the granularity of bandwidth in a Flexe interface and is used for determining the bandwidth used by a network slice or a Flexe link;
the port priority control information is used to determine a port priority corresponding to a network performance guarantee requirement in a network slice.
4. The link state information forwarding method of claim 1, further comprising:
distributing two-dimensional identification to the network slice, wherein the two-dimensional identification comprises a network slice type identification and a network slice difference identification, the network slice type identification represents a service scene borne by the network slice, and the network slice difference identification is used for representing different Virtual Private Network (VPN) instances;
after a Flexe link channel is established, a corresponding network slice type identifier is determined according to a service scene of a user, and service flows of different users are introduced into corresponding VPN examples of network slices of corresponding types so as to isolate different users.
5. A link state information forwarding apparatus comprising:
the attribute definition module IS configured to define an intermediate system to intermediate system ISIS extended attribute aiming at a flexible Ethernet Flexe interface according to an intermediate system IS reachability type length value TLV so as to carry Flexe link state information;
and the information identification module is configured to identify the Flexe link state information according to the ISIS Label Switched Path (LSP) message so as to flood and synchronize the Flexe link state.
6. The link state information forwarding apparatus of claim 5, wherein the attribute definition module is configured to:
adding a Flexe exchange object, a Flexe coding identifier and a sub-TLV;
the Flexe exchange object representation adopts a Flexe network exchange type, the Flexe coding identification represents a coding mode adopted by an interface, and the sub-TLV represents a presentation format of data with Flexe characteristic requirements.
7. The link-state information forwarding apparatus according to claim 6, wherein the sub-TLV includes a FlexE interface type identifier, a length, a bandwidth granularity attribute, and port priority control information;
the bandwidth granularity attribute represents the granularity of bandwidth in a Flexe interface and is used for determining the bandwidth used by a network slice or a Flexe link;
the port priority control information is used to determine a port priority corresponding to a network performance guarantee requirement in a network slice.
8. The link state information forwarding apparatus of claim 5, further comprising an identification assignment module configured to:
distributing two-dimensional identification to the network slice, wherein the two-dimensional identification comprises a network slice type identification and a network slice difference identification, the network slice type identification represents a service scene borne by the network slice, and the network slice difference identification is used for representing different Virtual Private Network (VPN) instances;
after a Flexe link channel is established, a corresponding network slice type identifier is determined according to a service scene of a user, and service flows of different users are introduced into corresponding VPN examples of network slices of corresponding types so as to isolate different users.
9. A link state information forwarding apparatus comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the link state information forwarding method of any of claims 1-4 based on instructions stored in the memory.
10. A computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions which, when executed by a processor, implement the link state information forwarding method of any one of claims 1 to 4.
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