CN108199974B

CN108199974B - Service flow forwarding management method, device and network node

Info

Publication number: CN108199974B
Application number: CN201711423719.6A
Authority: CN
Inventors: 刘文飞; 李佳; 白颖云
Original assignee: Hangzhou H3C Technologies Co Ltd
Current assignee: Hangzhou H3C Technologies Co Ltd
Priority date: 2017-12-25
Filing date: 2017-12-25
Publication date: 2021-09-07
Anticipated expiration: 2037-12-25
Also published as: CN108199974A

Abstract

The embodiment of the invention provides a method, a device and a network node for forwarding and managing service flow, wherein the method comprises the following steps: determining tunnel groups corresponding to the tunnel grades and the characteristic information of the received service flow from an equivalent table according to the received service flow, wherein each tunnel group comprises one or more TE tunnels, and the tunnel grades of the TE tunnels in the same tunnel group are the same; and forwarding the received service traffic through the TE tunnel in the determined tunnel group. By associating the characteristic information of the service traffic with the tunnel grade of the tunnel group, the service traffic with different characteristic information can be mapped to the TE tunnel in the tunnel group of the tunnel grade corresponding to the service traffic for forwarding. Therefore, the traffic flow with different characteristic information can be ensured to share transmission resources with different levels, the bandwidth of the tunnel is effectively utilized, and the use of the TE tunnel is more flexible.

Description

Service flow forwarding management method, device and network node

Technical Field

The present invention relates to the field of network communication technologies, and in particular, to a method, an apparatus, and a network node for service traffic forwarding management.

Background

In recent years, with the rapid increase of various applications such as multimedia, video, network games, and network commerce on the network, service providers have to continuously adjust the network infrastructure and continuously expand the links to meet the requirements of various network services for bandwidth resources. By implementing the flow engineering, the management cost of the network can be reduced, network resources can be fully and effectively used, dynamic adjustment can be realized under the condition of network congestion or jitter, and value-added services and additional services can be realized. The inventor researches and discovers that the existing traffic engineering transmission mode is relatively fixed and cannot meet the transmission requirement of traffic of each service.

Disclosure of Invention

In order to overcome the above disadvantages in the prior art, an object of the present invention is to provide a method for forwarding and managing service traffic, which is applied to a network node, and the method includes:

determining tunnel groups corresponding to the tunnel grades and the characteristic information of the received service flow from an equivalent table according to the received service flow, wherein each tunnel group comprises one or more TE tunnels, and the tunnel grades of the TE tunnels in the same tunnel group are the same;

and forwarding the received service traffic through the TE tunnel in the determined tunnel group.

Optionally, in the above method, before performing the step of forwarding the received traffic through the TE tunnel in the determined tunnel group, the method further includes:

when the determined tunnel group comprises a plurality of TE tunnels, obtaining a first base address index of a sub-table of the tunnel group from the equivalent table;

inquiring to obtain a sub-table of the tunnel group according to the first base address index, and obtaining the output interfaces of the TE tunnels stored in the sub-table;

and when the determined tunnel group comprises a TE tunnel, obtaining an outbound interface of the TE tunnel in the tunnel group from the equivalent table.

Optionally, in the above method, the network node includes a prefix table, the prefix table includes multiple levels of equivalent flag bits, and the step of determining, according to the received service traffic, a tunnel group whose tunnel level corresponds to the received feature information of the service traffic from the equivalent table includes:

inquiring the prefix table, detecting whether the multi-stage equivalence flag bit is in a set state, and if the multi-stage equivalence flag bit is in the set state, obtaining a second base address index of the equivalence table stored in the prefix table;

obtaining the equivalence table according to the index query of the second base address;

and determining a tunnel group corresponding to the tunnel grade and the characteristic information of the received service flow from the equivalent table obtained by query according to the received service flow.

Optionally, in the above method, before the step of determining, according to the received service traffic, a tunnel group whose tunnel level corresponds to the characteristic information of the received service traffic from the equivalence table is executed, the method further includes a step of configuring the equivalence table, where the step includes:

configuring the tunnel grade of each TE tunnel according to a user configuration instruction;

and dividing the TE tunnels with the same tunnel grade into the same tunnel group, and storing each tunnel group in an equivalent table.

Optionally, in the above method, before the step of determining, according to the received service traffic, a tunnel group whose tunnel level corresponds to the characteristic information of the received service traffic from the equivalence table is performed, the method further includes a step of configuring a sub-table and a prefix table, where the step includes:

when a tunnel group comprising a plurality of TE tunnels exists in the equivalent table, aiming at each tunnel group comprising a plurality of TE tunnels, issuing the plurality of TE tunnels in the tunnel group to a sub-table;

acquiring a first base address index of the sub-table, storing the first base address index into the equivalent table, and storing an outlet interface of the TE tunnel in the sub-table into the sub-table;

and obtaining a second base address index of the equivalent table, and storing the second base address index in a prefix table.

Another object of the present invention is to provide a service traffic forwarding management apparatus, applied to a network node, the apparatus including:

a tunnel group obtaining module, configured to determine, according to the received service traffic, a tunnel group corresponding to the tunnel class and the feature information of the received service traffic from the equivalence table, where each tunnel group includes one or more TE tunnels, and the tunnel classes of the TE tunnels in the same tunnel group are the same;

and the forwarding module is used for forwarding the received service flow through the TE tunnel in the determined tunnel group.

Optionally, in the apparatus, the apparatus further includes a base address index obtaining module, a first outgoing interface obtaining module, and a second outgoing interface obtaining module;

the base address index obtaining module is used for obtaining a first base address index of a sub-table of the tunnel group from the equivalent table when the determined tunnel group comprises a plurality of TE tunnels;

the first outgoing interface acquisition module is used for obtaining a sub-table of the tunnel group according to the first base address index query and obtaining outgoing interfaces of the multiple TE tunnels stored in the sub-table;

the second egress interface obtaining module is configured to obtain an egress interface of a TE tunnel in the tunnel group from the equivalence table when the determined tunnel group includes the TE tunnel.

Optionally, in the apparatus, the network node includes a prefix table, the prefix table includes multiple levels of equivalent flag bits, and the tunnel group acquisition module includes a detection unit, a base address index acquisition unit, an equivalent table acquisition unit, and a tunnel group acquisition unit;

the detection unit is used for inquiring the prefix table and detecting whether the multi-stage equivalent flag bit is in a set state;

the base address index obtaining unit is used for obtaining a second base address index of the equivalent table stored in the prefix table when the multi-stage equivalent flag bit is in a set state;

the equivalent table obtaining unit is used for obtaining the equivalent table according to the second base address index query;

and the tunnel group acquisition unit is used for determining a tunnel group corresponding to the tunnel grade and the characteristic information of the received service flow from the equivalent table obtained by query according to the received service flow.

Optionally, in the apparatus, the apparatus further includes an equivalence table configuration module configured to configure an equivalence table, where the equivalence table configuration module includes a configuration unit and a dividing unit;

the configuration unit is used for configuring the tunnel grade of each TE tunnel according to a user configuration instruction;

the dividing unit is used for dividing the TE tunnels with the same tunnel grade into the same tunnel group and storing each tunnel group in the equivalent table.

Optionally, in the above apparatus, the apparatus further includes a sub-table configuration module configured to configure a sub-table and a prefix table configuration module configured to configure a prefix table, where the sub-table configuration module includes a TE tunnel issuing unit and a storage unit;

the TE tunnel issuing unit is configured to issue, to each tunnel group including a plurality of TE tunnels, the plurality of TE tunnels in the tunnel group to a sub-table when the tunnel group including the plurality of TE tunnels exists in the equivalence table;

the storage unit is configured to obtain a first base address index of the sub-table, store the first base address index into the equivalence table, and store an egress interface of a TE tunnel in the sub-table into the sub-table;

the prefix table configuration module is used for obtaining a second base address index of the equivalent table and storing the second base address index in a prefix table.

It is another object of the present invention to provide a network node, comprising:

a memory;

a processor; and

a traffic forwarding management device including one or more software functional modules stored in the memory and executed by the processor, the traffic forwarding management device comprising:

Another object of the present invention is to provide a computer-readable storage medium, which stores instructions that, when executed, implement the above-mentioned service traffic forwarding management method.

Compared with the prior art, the invention has the following beneficial effects:

the service traffic forwarding management method, the service traffic forwarding management device and the network node provided by the embodiment of the invention associate the characteristic information of the service traffic with the tunnel level of the tunnel group, so that the service traffic with different characteristic information can be mapped to the TE tunnel in the tunnel group of the tunnel level corresponding to the service traffic for forwarding. Therefore, the traffic flow with different characteristic information can be ensured to share transmission resources with different levels, the bandwidth of the tunnel is effectively utilized, and the use of the TE tunnel is more flexible.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of an application scenario of a service traffic forwarding management method according to an embodiment of the present invention.

Fig. 2 is a flowchart of a service traffic forwarding management method according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a relationship between an equivalence table and a sub-table provided in the embodiment of the present invention.

Fig. 4 is another flowchart of a method for forwarding and managing service traffic according to an embodiment of the present invention.

Fig. 5 is a flowchart of the substeps of step S202 in fig. 4.

Fig. 6 is another flowchart of a method for forwarding and managing service traffic according to an embodiment of the present invention.

Fig. 7 is a block diagram of a network backbone device according to an embodiment of the present invention.

Fig. 8 is a functional block diagram of a service traffic forwarding management apparatus according to an embodiment of the present invention.

Fig. 9 is a functional block diagram of an equivalence table configuration module according to an embodiment of the present invention.

Fig. 10 is a functional block diagram of a sub-table configuration module according to an embodiment of the present invention.

Icon: 100-network backbone equipment; 110-traffic forwarding management means; 111-tunnel group acquisition module; 1111-a detection unit; 1112-base index acquisition unit; 1113-equivalence table acquisition unit; 1114-a tunnel group acquisition unit; 112-a forwarding module; 113-base index acquisition module; 114-a first outgoing interface acquisition module; 115-a second egress interface acquisition module; 116-equivalence table configuration module; 1161-configuration unit; 1162-dividing units; 117-sub-table configuration module; 1171-TE tunnel issuing unit; 1172-a storage unit; 118-prefix table configuration module; 120-a memory; 130-a processor; 140-a communication unit; 200-a network edge device; 300-user side.

Detailed Description

The inventor researches and discovers that most of TE (Traffic Engineering) tunnels in the prior art are selected based on a public Network route or a tunnel strategy of a VPN (Virtual Private Network), and for services with the same destination address or the same VPN service, the same tunnel is selected when the TE tunnel is selected, and the tunnel selection mode enables the transmission of Traffic of each service to be fixed. However, the inventor researches and discovers that in many cases, the priorities of different service flows are different, and it is not guaranteed that a service with a high priority can exclusively share a high-quality transmission resource by adopting a tunnel selection mode in the prior art.

Based on the above research, embodiments of the present invention provide a service traffic forwarding management scheme, which can map service traffic with different pieces of feature information to a tunnel of a corresponding tunnel level for forwarding, so as to ensure that service traffic with different priorities (usually corresponding to different pieces of feature information) shares transmission resources of different levels, so as to effectively utilize a tunnel bandwidth and make TE tunnels more flexible to use.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, fig. 1 is a schematic view of an application scenario of a service traffic forwarding management method according to an embodiment of the present invention. The scenario includes a network node and a ue 300, and the network node is connected to the ue 300. In this embodiment, the network node may be a network backbone device 100, for example, a Label Switching router in an MPLS (Multiprotocol Label Switching) network. The network node may also be a network edge device 200, such as an edge router of a service provider backbone. In this embodiment, a network node is taken as an example of the network backbone device 100 for explanation.

The network edge device 200 is connected to the network backbone device 100 and the user end 300, and a plurality of TE tunnels exist between the network edge device 200 and the network backbone device 100, so that service traffic interaction can be performed through each TE tunnel. The user traffic is sent from the user terminal 300 on one side and enters the network, and after being forwarded by the network backbone device 100, flows into the user network through the network edge device 200 to reach the user terminal 300 on the other side. In this embodiment, the traffic may be voice traffic, ethernet traffic, or ATM (Asynchronous Transfer Mode) data traffic.

Referring to fig. 2, fig. 2 is a flowchart of a method for forwarding and managing service traffic, which is applied to the network backbone device 100 shown in fig. 1, and the steps included in the method will be described in detail below.

And step S101, configuring the tunnel grade of each TE tunnel according to the user configuration instruction.

And step S102, dividing the TE tunnels with the same tunnel grade into the same tunnel group, and storing each tunnel group in an equivalent table.

A plurality of TE tunnels exist between the network backbone device 100 and the network edge device 200, and the service traffic of the user terminal 300 can be forwarded from any one or more TE tunnels. For the selection of TE tunnels, a common method is to perform load sharing, for example, flow-based, packet-based, or bandwidth-based load sharing, and forward with all TE tunnels to which iteration is possible. In such a manner, it is difficult to ensure that different types of traffic can be forwarded from the TE tunnels matched therewith, and some traffic with high priority cannot enjoy high-quality transmission resources.

Therefore, in this embodiment, before the service traffic forwarding processing is performed, the tunnel level of the TE tunnel and the priority of the service traffic may be configured in advance, and a corresponding relationship between the tunnel level and the priority is established to ensure that the service traffic with different priorities shares different forwarding tunnels.

In this embodiment, the setting of the priority of the traffic may be performed according to the characteristic information of the traffic, such as the type of the traffic, the source IP address, or the DSCP of the traffic. For example, a user may map different types of traffic flows into different priorities according to the own traffic requirements, for example, the priority of voice traffic flow may be configured to be 0, the priority of ethernet data traffic flow may be configured to be 1, and the priority of ATM data traffic flow may be configured to be 2 according to the configuration instruction of the user. Where 0 is the highest priority and 2 is the lowest priority.

The essence of the prioritization here is to associate characteristic information of different traffic flows with different tunnel classes being defined. And stores the associated information of both in an ACL (Access Control List) table.

In this embodiment, the multiple TE tunnels between the network backbone device 100 and the network edge device 200 are configured to different tunnel levels. Alternatively, one or more TE tunnels in the same tunnel level may be provided, for example, one TE tunnel in the tunnel level corresponding to the priority of a certain traffic flow may be provided, or a plurality of TE tunnels in the tunnel level corresponding to the priority of a certain traffic flow may be provided, which is not particularly limited in this embodiment.

In this embodiment, in order to associate traffic of a certain priority with all TE tunnels corresponding to the traffic, optionally, TE tunnels with the same tunnel rank are divided into the same tunnel group. Each tunnel group may include one TE tunnel, or there may be a plurality of TE tunnels. The TE tunnels of different tunnel classes correspond to different service classes to carry traffic flows of different priorities. For example, as shown in fig. 1, a TE tunnel with a service-class a may be used to carry voice traffic with a priority of 0, a TE tunnel with a service-class b may be used to carry ethernet traffic with a priority of 1, and a TE tunnel with a service-class c may be used to carry ATM data traffic with a priority of 2. And storing the tunnel group after tunnel grade configuration and division into an equivalent table.

Step S103, when there is a tunnel group including multiple TE tunnels in the equivalence table, issuing multiple TE tunnels in the tunnel group to a sub-table for each tunnel group including multiple TE tunnels.

Step S104, acquiring a first base address index of the sub-table, storing the first base address index into the equivalent table, and storing an output interface of the TE tunnel in the sub-table into the sub-table.

In this embodiment, when a tunnel group including a plurality of TE tunnels exists in the equivalence table, for each tunnel group including a plurality of TE tunnels, the plurality of TE tunnels included in the tunnel group are issued to the sub-table. The equivalence table may be a primary equivalence table, and the sub-table may be a secondary equivalence table. Referring to fig. 3, if a tunnel group with a tunnel level of service-class 0 includes multiple TE tunnels, the multiple TE tunnels are issued to the secondary equivalence table. Similarly, if a tunnel group with a tunnel level of service-class (N-1) includes multiple TE tunnels, the multiple TE tunnels are issued to the secondary equivalence list.

After all the TE tunnels in the tunnel group comprising the plurality of TE tunnels are issued to the secondary equivalent table, the first base address indexes of the secondary equivalent tables are obtained, and the first base address indexes are stored in the primary equivalent table, so that the corresponding secondary equivalent table can be searched subsequently according to the first base address indexes stored in the primary equivalent table.

In this embodiment, the egress interface of the TE tunnel in each secondary equivalence table is stored in the corresponding secondary equivalence table. Of course, the egress interface of the TE tunnel may be separately stored in the egress interface information table, and then the base address index of the egress interface information table is stored in the secondary equivalent table, so as to find the egress interface information of the TE tunnel, which is not limited in this embodiment.

In addition, when there is no tunnel group including a plurality of TE tunnels in the primary equivalence table, the egress interface information of the TE tunnels in each tunnel group may be stored in the primary equivalence table. Similarly, in this case, the egress interface information of the TE tunnels in each tunnel group may also be separately stored in the egress interface information table, and then the base address index of the egress interface information table is stored in the primary equivalent table, so as to find the egress interface information of the TE tunnels, which is not limited in this embodiment.

Optionally, after completing the configuration of the primary equivalence table and/or the configuration of the secondary equivalence table, the prefix table needs to be configured:

step S105, obtaining a second base address index of the equivalent table, and storing the second base address index in a prefix table.

Optionally, in this embodiment, the second base index of the equivalence table is stored in the prefix table. For the network backbone device 100, its prefix table is an ILM table, and for the network edge device 200, its prefix table is an FTN table. If the equivalent table has a tunnel group including a plurality of TE tunnels, it is necessary to issue the plurality of TE tunnels in each tunnel group including the plurality of TE tunnels to different sub-tables respectively, and store the second base address index of the equivalent table in a prefix table.

Alternatively, if there is no tunnel group containing multiple TE tunnels in the equivalence table, the second base index of the equivalence table may be directly deposited in a prefix table.

The prefix table includes a multi-level equivalent flag bit and a normal equivalent flag bit, and if the tunnel level division is performed as described above, the multi-level equivalent flag bit may be set to 1, for example. If the tunnel level division is not performed, that is, the processing mode of the service traffic is the existing load balancing processing mode, the multi-level equivalent position may be set to 0, and the common equivalent position may be set to 1.

Generally, the tunnel level can be classified into 16 levels, but is not limited to this, and it is assumed that the following 5 TE tunnels exist in the current environment:

tunnel1：serviceclass 2

tunnel2：serviceclass 6

tunnel3：serviceclass 6

tunnel4：serviceclass 6

tunnel5：serviceclass 6

the number of next hops under the platform VN is 5, the drive traverses 5 next hops, and the number of tunnels of each tunnel level in 0-15 tunnel levels is recorded:

a[0]：0；a[1]：0

a[2]：1；a[3]：0

a[4]：0；a[5]：0

a[6]：4；a[7]：0

a[8]：0；a[9]：0

a[10]：0；a[11]：0

a[12]：0；a[13]：0

a[14]：0；a[15]：0

as can be seen from the above, the number of tunnels arranged in a [2] is 1, and the number of tunnels arranged in a [6] is 4. Driving each tunnel grade to issue a corresponding sub-table, wherein the grade with the next hop of 0 can be iterated to other grades, and the iteration rule is as follows: and searching the grades smaller than the self grade, and sequentially searching forwards, and if not, sequentially searching backwards from the grades larger than the self grade. In this way, the following results were obtained:

a [0 ]: iterate to level 2; a [1 ]: iterate to level 2

a [2 ]: 1; a [3 ]: iterate to level 2

a [4 ]: iterate to level 2; a [5 ]: iterate to level 2

a [6 ]: 4; a [7 ]: iterate to level 6

a [8 ]: 0 iterates to level 6; a [9 ]: iterate to level 6

a [10 ]: 0 iterates to level 6; a [11 ]: iterate to level 6

a [12 ]: 0 iterates to level 6; a [13 ]: iterate to level 6

a [14 ]: 0 iterates to level 6; a [15 ]: iterate to level 6

Through the above flow, the equivalence tables actually include 16 equivalence tables of each level, wherein the contents of 6 equivalence tables of levels 0 to 5 are the same, and the contents of 10 equivalence tables of levels 6 to 15 are the same. For the prefix table, in the above case, the multi-level equivalent flag bit in the prefix table is in a set state, the equivalent number 16 is stored, and the second base address index of the equivalent table is stored. For the level table, since the equivalent table with the level of 0-5 only contains one TE tunnel, the equivalent table does not have a sub-table, in which the egress interface information corresponding to the TE tunnel is stored. The contents of the 10 equivalent tables of levels 6-15 are the same, since they contain multiple TE tunnels, there is a sub-table and there is stored the number of TE tunnels in the sub-table of 4. But there is no relevant information of the outgoing interface, because the outgoing interface information of the TE tunnel is stored in the issued sub-table, but the first base address index of the sub-table is stored therein. With regard to the sub-table, the outbound interface information of tunnel2-tunnel4 is stored therein.

In this embodiment, after completing the configuration of the equivalence table, the prefix table, and the sub-table in the case that there is a tunnel group including a plurality of TE tunnels, referring to fig. 4, when the network backbone device 100 obtains a service traffic, the following step S201 is performed.

Step S201, querying an access control table storing a correspondence between the tunnel class of the tunnel group and the characteristic information of the service traffic to obtain the tunnel class corresponding to the received characteristic information of the service traffic.

As can be seen from the above, the ACL table stores the feature information of different service flows and the associated information of different tunnel levels, and the network backbone device 100 identifies the feature information, for example, identifies the type of the received service flow, and if the service flow contains a voice and video related Protocol such as RTP (Real-Time Transport Protocol), RTCP (Real-Time Transport Control Protocol), RTSP (Real Time Streaming Protocol), etc., the service flow can be determined to be a voice and video service flow, and if the service flow contains a HTTP (Hypertext Transport Protocol), FTP (File Transfer Protocol), a text Transfer Protocol), a telnet (lnteletype), SMTP (Simple Mail Transfer Protocol, etc., the service flow can be determined to be a network-oriented File Transfer Protocol, etc., this can be understood in more detail with reference to the prior art.

And searching the corresponding relation stored in the prefix table according to the obtained characteristic information to obtain the tunnel grade corresponding to the received service flow.

Step S202, according to the received service flow, determining a tunnel group corresponding to the tunnel grade and the characteristic information of the received service flow from the equivalent table.

Step S203, forwarding the received service traffic through the TE tunnel in the determined tunnel group.

Referring to fig. 5, in the present embodiment, step S202 may include the following sub-steps:

step S2021, querying the prefix table, detecting whether the multi-level equivalence flag bit is in a set state, and if the multi-level equivalence flag bit is in the set state, obtaining a second base address index of the equivalence table stored in the prefix table.

Step S2022, obtaining the equivalence table according to the second base address index query.

Step S2023, according to the received service traffic, determining a tunnel group whose tunnel level corresponds to the feature information of the received service traffic from the equivalent table obtained by the query.

When the network backbone device 100 processes the service traffic, it may query the configured prefix table to check whether the multi-level equivalent flag bits are hit, and if the multi-level equivalent flag bits are hit, process the received service traffic in a multi-level equivalent processing manner. If the multi-level equivalent zone bit is not hit, whether the common equivalent zone bit is hit is checked, if the common equivalent zone bit is hit, the current environment comprises a plurality of TE tunnels, but each TE tunnel has no tunnel grade difference, and the received service traffic can be subjected to load sharing to be distributed to the plurality of TE tunnels for forwarding. If the common equivalent zone bit is missed, the situation shows that only one TE tunnel exists in the current environment, and the received service flow can be directly forwarded from the TE tunnel.

In this embodiment, when the multi-level equivalent flag bit is hit, the second base address index of the equivalent table stored in the prefix table is obtained, and the equivalent table is found according to the second base address index. As can be seen from the above, the corresponding tunnel grade can be obtained according to the characteristic information of the service traffic, and the inquired grade table stores a plurality of tunnel groups, where the tunnel groups carry the tunnel grade information. The corresponding tunnel group may be determined from the level table according to the obtained corresponding tunnel level.

And forwarding the received service traffic through the TE tunnel in the determined tunnel group. For example, if the obtained service traffic is voice service traffic, the tunnel class corresponding to the voice service traffic may be determined to be service-class a according to the pre-configuration information, a corresponding tunnel group may be determined according to the tunnel class, and the obtained voice service traffic may be forwarded through the TE tunnel in the tunnel group having the determined tunnel class of service-class a.

In this embodiment, as can be seen from the configuration flows of the equivalent table and the sub-table, when the equivalent table includes a tunnel group including a plurality of TE tunnels, all the TE tunnels in the tunnel group including a plurality of TE tunnels are issued to the sub-table. Therefore, after receiving the traffic flow and determining the corresponding tunnel group, the method may further include the following steps, please refer to fig. 6 in combination:

step S301, when the determined tunnel group includes a plurality of TE tunnels, obtaining a first base address index of a sub-table of the tunnel group from the equivalent table.

Step S302, according to the first base address index, a sub-table of the tunnel group is obtained through query, and the output interfaces of the TE tunnels stored in the sub-table are obtained.

Step S303, when the determined tunnel group includes a TE tunnel, obtaining an egress interface of the TE tunnel in the tunnel group from the equivalence table.

Optionally, after determining the tunnel group for forwarding, detecting whether the tunnel group contains a plurality of TE tunnels. In view of the foregoing, in the pre-configuration process, if a certain tunnel group includes multiple TE tunnels, the multiple TE tunnels of the tunnel group are issued to the sub-table, and the first base address index of the sub-table is stored in the equivalent table. Therefore, if the determined tunnel group includes a plurality of TE tunnels, the first base address index of the sub-table of the tunnel group may be obtained from the equivalent table, and the sub-table may be found according to the first base address index of the sub-table. And inquiring the obtained sub-table to obtain the outbound interface information of the multiple TE tunnels in the tunnel group stored in the sub-table, and forwarding the received service flow from the outbound interface through the multiple TE tunnels. In this embodiment, the obtained service traffic may be equally divided into the multiple TE tunnels for forwarding, or the service traffic may be divided into the multiple TE tunnels for forwarding according to a load sharing related algorithm, which is not limited in this embodiment.

In this embodiment, in the pre-configuration process, if it is adopted that the egress interface information is separately stored in the egress interface information table, and then the base address of the egress interface information table is stored in the sub-table, after the sub-table is obtained, the egress interface information table can be searched according to the base address of the egress interface information table stored in the sub-table, so as to obtain the egress interface, and then the received service traffic is forwarded from the egress interface through the multiple TE tunnels in the sub-table.

If the outbound interface information is separately stored in the outbound interface information table and the base address of the outbound interface information table is stored in the equivalent table in the pre-configuration process, the sub-table of the tunnel group needs to be searched to obtain the multiple TE tunnels in the sub-table, the outbound interface information of the TE tunnels in the tunnel group is obtained from the equivalent table, and then the obtained service traffic is forwarded from the outbound interface through the multiple TE tunnels.

In this embodiment, as can be seen from the configuration flow of the equivalent table, when a tunnel group in the equivalent table includes one TE tunnel, an egress interface of the TE tunnel is stored in the equivalent table, or a base address of an egress interface information table storing egress interface information is stored in an equivalent table entry. Therefore, if the determined tunnel group includes one TE tunnel, the equivalent table may be looked up to obtain the egress interface of the TE tunnel in the tunnel group, or the equivalent table may be looked up to obtain the base address of the egress interface information table to obtain the egress interface of the TE tunnel. And forwarding the received service traffic from the outgoing interface through the TE tunnel.

Based on the above design, the service traffic forwarding management method provided in this embodiment maps the service traffic into different priorities, and matches the different priorities with different tunnel levels of the tunnel group, so as to ensure that each service traffic having different feature information shares corresponding transmission resources, and the configuration mode of the primary equivalence table and the secondary equivalence table is adopted, thereby simplifying the forwarding management of the service traffic and ensuring the forwarding efficiency.

Referring to fig. 7, fig. 7 is a block diagram of the network backbone device 100 shown in fig. 1. The network backbone device 100 includes a traffic forwarding management apparatus 110, a memory 120, a processor 130, and a communication unit 140.

The elements of the memory 120, the processor 130, and the communication unit 140 are electrically connected to each other directly or indirectly to implement transmission or interaction of traffic. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The traffic forwarding management apparatus 110 includes at least one software functional module which can be stored in the memory 120 in the form of software or firmware (firmware) or solidified in an Operating System (OS) of the network backbone device 100. The processor 130 is configured to execute executable modules stored in the memory 120, such as software functional modules and computer programs included in the traffic forwarding management device 110.

The Memory 120 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory 120 is used for storing a program, and the processor 130 executes the program after receiving the execution instruction. The communication unit 140 is configured to establish communication between the network backbone device 100 and the network edge device 200.

The processor 130 may be an integrated circuit chip having signal processing capabilities. The Processor 130 may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor 130 may be any conventional processor or the like.

Referring to fig. 8, fig. 8 is a functional block diagram of a service traffic forwarding management device 110 applied to the network backbone equipment 100 shown in fig. 1, where the service traffic forwarding management device 110 includes a tunnel group acquiring module 111 and a forwarding module 112.

The tunnel group acquiring module 111 is configured to determine, according to the received service traffic, a tunnel group whose tunnel level corresponds to the received feature information of the service traffic from the equivalence table, where each tunnel group includes one or more TE tunnels, and the tunnel levels of the TE tunnels in the same tunnel group are the same. The tunnel group acquiring module 111 may be configured to execute step S202 shown in fig. 4, and the detailed description of step S202 may be referred to for a specific operation method.

The forwarding module 112 is configured to forward the received traffic through the TE tunnel in the determined tunnel group. The forwarding module 112 may be configured to execute step S203 shown in fig. 4, and the detailed description of step S203 may be referred to for a specific operation method.

In this embodiment, the network node includes a prefix table, and the prefix table includes multiple levels of equivalent flag bits. The tunnel group acquisition module 111 includes a detection unit 1111, a base address index acquisition unit 1112, an equivalence table acquisition unit 1113, and a tunnel group acquisition unit 1114.

The detecting unit 1111 is configured to query the prefix table, and detect whether the multi-level equivalence flag is in a set state. The base address index obtaining unit 1112 is configured to obtain a second base address index of the equivalence table stored in the prefix table when the multi-level equivalence flag bit is in a set state. The detection unit 1111 and the base index acquisition unit 1112 may be commonly used to execute step S2021 shown in fig. 5, and a detailed operation method may refer to the detailed description of step S2021.

The equivalence table obtaining unit 1113 is configured to obtain the equivalence table according to the second base address index query. The equivalence table obtaining unit 1113 may be configured to execute step S2022 shown in fig. 5, and the detailed description of the step S2022 may be referred to for a specific operation method.

The tunnel group acquiring unit 1114 is configured to determine, according to the received service traffic, a tunnel group whose tunnel level corresponds to the feature information of the received service traffic from the equivalent table obtained through query. The tunnel group acquiring unit 1114 may be configured to execute step S2023 shown in fig. 5, and a detailed operation method may refer to the detailed description of step S2023.

In this embodiment, the service traffic forwarding management apparatus 110 further includes a base address index obtaining module 113, a first outgoing interface obtaining module 114, and a second outgoing interface obtaining module 115.

The base address index obtaining module 113 is configured to obtain, from the equivalent table, a first base address index of a sub-table of the tunnel group when the determined tunnel group includes multiple TE tunnels. The base index obtaining module 113 may be configured to execute step S301 shown in fig. 6, and the detailed description of step S301 may be referred to for a specific operation method.

The first egress interface obtaining module 114 is configured to obtain a sub-table of the tunnel group according to the first base address index query, and obtain egress interfaces of multiple TE tunnels stored in the sub-table. The first output interface obtaining module 114 may be configured to execute step S302 shown in fig. 6, and the detailed description of step S302 may be referred to for a specific operation method.

The second egress interface obtaining module 115 is configured to, when the determined tunnel group includes one TE tunnel, obtain an egress interface of the TE tunnel in the tunnel group from the equivalence table. The second output interface obtaining module 115 may be configured to execute step S303 shown in fig. 6, and the detailed description of step S303 may be referred to for a specific operation method.

In this embodiment, the service traffic forwarding management device 110 further includes an equivalence table configuration module 116 for configuring an equivalence table, and referring to fig. 9, the equivalence table configuration module 116 includes a configuration unit 1161 and a dividing unit 1162.

The configuration unit 1161 is configured to configure the tunnel level of each TE tunnel according to the user configuration instruction. The configuration unit 1161 may be configured to execute step S101 shown in fig. 2, and a detailed description of the step S101 may be referred to for a specific operation method.

The dividing unit 1162 is configured to divide the TE tunnels with the same tunnel level into the same tunnel group, and store each tunnel group in the equivalence table. The dividing unit 1162 may be configured to execute step S102 shown in fig. 2, and a detailed description of step S102 may be referred to for a specific operation method.

In this embodiment, the service traffic forwarding management apparatus 110 further includes a sub-table configuration module 117 configured to configure a sub-table and a prefix table configuration module 118 configured to configure a prefix table, and referring to fig. 10, the sub-table configuration module 117 includes a TE tunnel issuing unit 1171 and a storage unit 1172.

The TE tunnel issuing unit 1171 is configured to, when a tunnel group including a plurality of TE tunnels exists in the equivalence table, issue the plurality of TE tunnels in the tunnel group to a sub-table for each tunnel group. The TE tunnel issuing unit 1171 may be configured to execute step S103 shown in fig. 2, and the detailed description of step S103 may be referred to for a specific operation method.

The storing unit 1172 is configured to obtain a first base address index of the sub-table, store the first base address index into the equivalent table, and store an outgoing interface of the TE tunnel in the sub-table into the sub-table. The storage unit 1172 may be configured to execute step S104 shown in fig. 2, and the specific operation method may refer to the detailed description of step S104.

The prefix table configuring module 118 is configured to obtain a second base address index of the equivalent table, and store the second base address index in a prefix table. The prefix table configuring module 118 may be configured to execute step S105 shown in fig. 2, and the detailed description of step S105 may be referred to for a specific operation method.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus described above may refer to the corresponding process in the foregoing method, and will not be described in too much detail herein.

Through the above description of the embodiments, it is clear to those skilled in the art that the embodiments of the present invention may be implemented by hardware, or by software plus a necessary general hardware platform. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the implementation scenarios of the present invention.

In summary, according to the method, the apparatus, and the network node for managing service traffic forwarding provided in the embodiments of the present invention, the service flow is mapped to different priorities according to the characteristic information of the service traffic, and the different priorities of the service traffic are associated with the tunnel levels of the TE tunnel group, so that the service traffic with different priorities can be forwarded from the TE tunnels in the tunnel group of the tunnel level corresponding to the priorities of the service traffic. Therefore, the traffic flows with different priorities are ensured to share transmission resources with different levels, the bandwidth of the tunnel is effectively utilized, and the TE tunnel is more flexibly used.

Furthermore, the invention distributes the tunnel group containing a plurality of TE tunnels to the secondary equivalent table by configuring the primary equivalent table and the secondary equivalent table, thereby facilitating the service flow direction forwarding management and improving the forwarding efficiency.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

It is noted that, herein, relational terms such as first and second, and the like may be 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for forwarding and managing service traffic is applied to a network node, wherein the network node comprises a prefix table, and the prefix table comprises multiple levels of equivalent flag bits, and the method comprises the following steps:

forwarding the received service traffic through the TE tunnel in the determined tunnel group;

the step of determining a tunnel group corresponding to the tunnel grade and the received feature information of the service traffic from the equivalence table includes:

inquiring the prefix table, detecting whether the multi-stage equivalent flag bit is in a set state, if so, obtaining a second base address index of the equivalent table stored in the prefix table, inquiring to obtain the equivalent table according to the second base address index, and determining a tunnel group corresponding to the tunnel grade and the characteristic information of the received service flow from the inquired equivalent table according to the received service flow.

2. The traffic forwarding management method according to claim 1, wherein before the step of forwarding the received traffic through the TE tunnels in the determined tunnel group is performed, the method further comprises:

3. The method for forwarding and managing service traffic according to claim 1, wherein before the step of determining, according to the received service traffic, a tunnel group whose tunnel level corresponds to the characteristic information of the received service traffic from the equivalence table, the method further comprises a step of configuring the equivalence table, the step comprising:

4. The method for forwarding and managing service traffic according to claim 3, wherein before the step of determining, according to the received service traffic, a tunnel group whose tunnel level corresponds to the feature information of the received service traffic from the equivalence table, the method further includes a step of configuring a sub-table and a prefix table, the step including:

5. A service traffic forwarding management device is applied to a network node, the network node includes a prefix table, the prefix table includes multiple levels of equivalent flag bits, and the device includes:

a forwarding module, configured to forward the received service traffic through the TE tunnels in the determined tunnel group;

the tunnel group acquisition module comprises a detection unit, a base address index acquisition unit, an equivalence table acquisition unit and a tunnel group acquisition unit;

the detection unit is used for inquiring the prefix table and detecting whether the multi-level equivalent flag bit is in a set state, the base address index acquisition unit is used for acquiring a second base address index of the equivalent table stored in the prefix table when the multi-level equivalent flag bit is in the set state, the equivalent table acquisition unit is used for acquiring the equivalent table according to the second base address index inquiry, and the tunnel group acquisition unit is used for determining a tunnel group corresponding to the tunnel level and the characteristic information of the received service flow from the inquired equivalent table according to the received service flow.

6. The device for forwarding and managing service traffic according to claim 5, further comprising a base address index obtaining module, a first egress interface obtaining module, and a second egress interface obtaining module;

7. The device for forwarding management of service traffic according to claim 5, wherein the device further comprises an equivalence table configuration module for configuring an equivalence table, the equivalence table configuration module comprises a configuration unit and a partitioning unit;

8. The device according to claim 7, further comprising a sub-table configuration module for configuring a sub-table and a prefix table configuration module for configuring a prefix table, wherein the sub-table configuration module includes a TE tunnel issuing unit and a storage unit;

9. A network node, characterized in that the network node comprises:

the device comprises a memory, a first storage unit and a second storage unit, wherein the memory stores a prefix table which comprises a plurality of levels of equivalent zone bits;

a processor; and

10. A computer-readable storage medium storing instructions that, when executed, implement the method for traffic forwarding management according to any one of claims 1 to 4.