CN104243345B - A kind of traffic scheduling method based on type of service, system and equipment - Google Patents

Abstract

The invention discloses a traffic scheduling method, system and equipment based on business types. The method includes: a traffic scheduling server acquires traffic information of various business types that need to be transmitted in the backbone network, and acquires the traffic information of each chain in the backbone network. The traffic scheduling server uses the traffic information of various service types and the link information of each link to determine the transmission link of the traffic of each service type in the backbone network; the traffic scheduling server divides the traffic of each service type The transmission link in the backbone network notifies each network device in the backbone network, and each network device in the backbone network transmits the traffic of the service type on the transmission link in the backbone network according to the traffic of the service type. In the embodiment of the present invention, bandwidth utilization can be improved, link bandwidth can be allocated on demand, service experience can be guaranteed, and traffic scheduling can be differentiated.

Description

A traffic scheduling method, system and device based on service type

technical field

The present invention relates to the technical field of communication, and in particular to a flow scheduling method, system and equipment based on service types.

Background technique

At present, the Internet has the following problems: First, routing is based on the destination IP address and the shortest path, ignoring the requirements of the network’s available link capacity and packet flow itself, such as some links are overloaded or congested, while other links are under utilization. The bandwidth utilization rate of the entire network link is not high; secondly, the current IP technology hopes to support a wide range of services (such as voice and video, etc.), but the current IP service cannot guarantee the service quality of these services. Based on the above problems, IP technology considers adding flow control (or called flow engineering) technology to provide a direct flow control mechanism.

Traffic engineering is used to avoid the contradiction of excessive utilization of some resources and insufficient utilization of other resources due to invalid mapping of business flows and resources. Among them, IP network forwarding calculates the shortest path based on OSPF (Open Shortest Path First), ISIS (Intermediate System to Intermediate System, intermediate system to intermediate system), etc. After the traffic engineering function is enabled, in order to improve the path calculation In order to improve the effectiveness, parameters such as estimated bandwidth and link congestion coefficient also need to be considered.

In the prior art, traffic engineering mainly includes an information release component, a path selection component, a signaling component and a data forwarding component. Among them, the information publishing component: each router advertises and obtains network topology status information, and forms a link state database and a traffic engineering database. The link state database is used for SPF (Shortest Path First, shortest path first) calculation, traffic engineering The database is used for route selection calculation when establishing a traffic engineering tunnel. Path Selection Component: The ingress router calculates each physical link using a constraint-based SPF algorithm. Signaling component: establish a forwarding link according to the link calculated by the path selection component, reserve resources and distribute labels, etc. Data forwarding component: After the signaling component successfully establishes a forwarding link, it uses high-speed and efficient forwarding technology to forward data packets.

In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:

In the current traffic engineering solution, since the main function of the router is the IP layer forwarding function, in the above process, only some IP layer indicators (such as link bandwidth) can be negotiated, and the indicators for obtaining links are relatively small. The forwarding link of may not be the optimal forwarding link.

Contents of the invention

Embodiments of the present invention provide a traffic scheduling method, system, and device based on service types, so as to select an optimal forwarding link, transmit traffic based on the optimal forwarding link, and avoid network congestion.

In order to achieve the above purpose, the embodiment of the present invention provides a traffic scheduling method based on service type, the method includes:

The traffic scheduling server obtains traffic information of various service types that need to be transmitted in the backbone network, and obtains link information of each link in the backbone network;

The traffic scheduling server uses the traffic information of the various service types and the link information of the links to determine the transmission link of the traffic of each service type in the backbone network;

The traffic scheduling server notifies each network device in the backbone network of the transmission link of the traffic of each service type in the backbone network, and each network device in the backbone network transmits the traffic in the backbone network according to the traffic type of the service type. The transmission link in the network transmits the traffic of this service type.

An embodiment of the present invention provides a traffic scheduling system based on service type, the system includes:

A traffic scheduling server, configured to obtain traffic information of various service types that need to be transmitted in the backbone network, and obtain link information of each link in the backbone network; and utilize the traffic of various service types Information and the link information of each link determine the transmission link of the traffic of each service type in the backbone network; and notify the transmission link of the traffic of each service type in the backbone network Each network device in the backbone network;

The network device is configured to transmit the traffic of the service type according to the transmission link of the traffic of the service type in the backbone network.

An embodiment of the present invention provides a traffic scheduling server, and the traffic scheduling server includes:

A business status awareness module, used to obtain traffic information of various business types that need to be transmitted in the backbone network;

A link state perception module, configured to obtain link information of each link in the backbone network;

A traffic scheduling module, configured to use the traffic information of the various service types and the link information of the links to determine the transmission link of the traffic of each service type in the backbone network;

A policy issuing module, configured to notify each network device in the backbone network of the transmission link of the traffic of each service type in the backbone network, and each network device in the backbone network will transmit the traffic of each service type in the backbone network The transmission link in the backbone network transmits the traffic of this service type.

Compared with the prior art, the embodiment of the present invention has at least the following advantages: In the embodiment of the present invention, it can be determined based on the flow information of various service types transmitted in the backbone network and the link information of each link in the backbone network. The transmission link of the traffic of each service type in the backbone network, so as to perform traffic scheduling based on the service type, improve bandwidth utilization, allocate link bandwidth on demand, ensure service experience, differentiate traffic scheduling, and avoid overloading of certain links Or congestion, and other problems such as insufficient link utilization.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present invention;

FIG. 2 is a flow chart of a traffic scheduling method based on a service type provided in Embodiment 1 of the present invention;

FIG. 3 is a schematic structural diagram of a traffic scheduling server provided by Embodiment 3 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one

Aiming at the problems existing in the prior art, Embodiment 1 of the present invention provides a traffic scheduling method based on service type, which is applied to at least traffic analysis equipment, traffic scheduling server, and various network devices (such as routers) in the backbone network. In the network, FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present invention. The traffic analysis device is located between the provincial network outlet and the backbone network. The traffic scheduling server may specifically include multiple traffic scheduling servers to share the processing workload. And the traffic dispatching server is connected with each traffic analysis equipment, and is connected with each network equipment in the backbone network.

In the above application scenario, as shown in Figure 2, the method includes the following steps:

In step 201, the traffic scheduling server obtains traffic information of various service types that need to be transmitted in the backbone network, and obtains link information of each link in the backbone network.

In the embodiment of the present invention, the traffic scheduling server obtains the traffic information of various types of services that need to be transmitted in the backbone network, specifically including but not limited to the following methods: the traffic analysis device analyzes the traffic of various types of services that need to enter the backbone network and Analyze the traffic of various business types from the backbone network (that is, the traffic analysis equipment analyzes the traffic between the provincial network outlet and the backbone network), obtain the traffic information of various business types that need to be transmitted in the backbone network, and Report the traffic information of various types of services that need to be transmitted in the backbone network to the traffic scheduling server, and the traffic scheduling server receives the traffic information of various types of services that need to be transmitted in the backbone network reported by the traffic analysis device.

Among them, the service type specifically includes but is not limited to one or any combination of the following: HTTP (Hyper Text Transfer Protocol, hypertext transfer protocol) service, P2P (Peer-to-Peer, point-to-point) service, instant messaging service, routing network management information service and other types of business.

As shown in Table 1, it is an example of the traffic information of various types of services reported by the traffic analysis device to the traffic scheduling server. It is obtained by analyzing the traffic of business types (that is, business outbound traffic) and the traffic of various business types from the backbone network (that is, business inbound traffic), and the total business traffic is the business inbound traffic and the business outbound traffic is the sum of flows.

Table 1

business type total traffic business inbound traffic business outbound traffic HTTP service 600Mbps 500Mbps 100Mbps P2P business 1900Mbps 1000Mbps 900Mbps instant messaging service 10Mbps 5Mbps 5Mbps Routing network management information service 0.01Mbps 0.005Mbps 0.005Mbps

In the embodiment of the present invention, the traffic scheduling server obtains the link information of each link in the backbone network, specifically including but not limited to the following methods: the network equipment in the backbone network monitors the link information of each link in the backbone network The link information of each link in the backbone network (which is the main index of the network layer) is obtained according to the usage status, and the link information of each link in the backbone network is reported to the traffic scheduling server, and the traffic scheduling server receives the backbone Link information of each link reported by network devices in the network.

Wherein, the link information of each link includes at least the bandwidth utilization rate of each link; further, the link information of each link may also include the link index of each link, and the link index is specific Including but not limited to one or any combination of the following: delay, jitter, packet loss rate.

As shown in Table 2, it is an example of the link information of each link reported by the network equipment in the backbone network to the traffic scheduling server. The link information includes link delay, jitter, packet loss rate and bandwidth Utilization rate, the above link information is obtained by network equipment through monitoring the link usage in the backbone network.

Table 2

link time delay jitter Packet loss rate bandwidth utilization Network Device 1 - Network Device 2 55ms 1ms 0.005% 30% Network Device 1 - Network Device 3 60ms 0.5ms 0.005% 40%

Network Device 2 - Network Device 3 35ms 0.5ms 0.005% 25%

In step 202, the traffic scheduling server uses the traffic information of various service types and the link information of each link to determine the transmission link of the traffic of each service type in the backbone network.

In the embodiment of the present invention, the traffic scheduling server uses the traffic information of various service types and the link information of each link to determine the transmission link of the traffic of each service type in the backbone network, specifically including but not limited to the following methods: The scheduling server uses the traffic information of various business types to determine the traffic that each business type needs to transmit in the backbone network, uses the link information of each link to determine the traffic that each link can carry, and uses the traffic required by each business type. The traffic transmitted in the backbone network and the traffic that each link can carry determine the transmission link of the traffic of each service type in the backbone network.

For example, when the traffic information of various business types is shown in Table 1, the traffic scheduling server determines that the traffic required to be transmitted in the backbone network for HTTP services is 600 Mbps, determines that the traffic required for P2P services to be transmitted in the backbone network is 1900 Mbps, and determines The traffic that needs to be transmitted in the backbone network for business is 10Mbps, and the traffic that needs to be transmitted in the backbone network for routing network management information service is 0.01Mbps.

For example, when the link information of each link is shown in Table 2, the traffic scheduling server determines that the traffic that the link (network device 1-network device 2) can carry is link bandwidth * (1-30%), the link The link bandwidth is the link bandwidth between network device 1-network device 2, and its bandwidth value can be pre-configured on the traffic scheduling server; determine the traffic that the link (network device 1-network device 3) can carry is the link bandwidth* (1-40%), the link bandwidth is the link bandwidth between network device 1-network device 3, and its bandwidth value can be pre-configured on the traffic scheduling server; determine the link (network device 2-network device 3) The traffic that can be carried is the link bandwidth * (1-25%). The link bandwidth is the link bandwidth between network device 2 and network device 3. The bandwidth value can be pre-configured on the traffic scheduling server.

Based on the traffic that needs to be transmitted in the backbone network for each service type and the traffic that each link can carry, the traffic scheduling server determines that the link that can carry more traffic than the service type needs to be transmitted in the backbone network is the link of the service type The transmission link of the traffic in the backbone network.

Further, when there are multiple links that can carry traffic greater than the traffic that needs to be transmitted in the backbone network for each type of business, the traffic scheduling server uses the traffic that needs to be transmitted in the backbone network for each type of business and the traffic of each link The process of determining the transmission link of the traffic of each service type in the backbone network, including but not limited to the following methods: the traffic scheduling server selects the link that can carry more traffic than the service type needs to transmit in the backbone network (that is, multiple links), and determine the link index corresponding to each selected link (the link index is carried in the link information, and the link index specifically includes but is not limited to one of the following or any combination : delay, jitter, packet loss rate); after that, the traffic scheduling server needs to select the link corresponding to the link index that meets the link index required by the service type as the transmission of the traffic of the service type in the backbone network link.

Among them, the link index required by each service type can be pre-configured for each service type, as shown in Table 3, which is an example of the pre-configured link index required by each service type. At this time, the link index is delay, Jitter, packet loss rate; further, the traffic scheduling server needs to select the link index corresponding to the link (corresponding to the content shown in Table 2) to meet the link index required by the service type (corresponding to the content shown in Table 3) The link of this service type is used as the transmission link in the backbone network for the traffic of this service type.

table 3

business type Latency requirements Jitter requirements Packet loss rate requirements HTTP service 70ms 1ms 0.01% P2P business none none none instant messaging service 65ms 1ms none Routing network management information service 60ms 0.5ms 0.005%

For example, when the link index required by the HTTP service is shown in Table 3, the traffic scheduling server needs to select the link index corresponding to the link (acquired based on the content in Table 2) that satisfies the link index required by the HTTP service as the HTTP The transmission link of the traffic of the business in the backbone network; as another example, when the link index required by the routing network management information service is shown in Table 3, the traffic scheduling server needs to select the link index corresponding to the link (based on the content of Table 2). ) The link that satisfies the link index required by the routing network management information service is used as the transmission link of the traffic of the routing network management information service in the backbone network.

In a specific implementation of the embodiment of the present invention, different security priorities can also be configured for each service type, such as: configuring the security priority of the routing network management information service to be 7, configuring the security priority of the instant messaging service to be 5, Set the security priority of the HTTP service to 3, and set the security priority of the P2P service to 0. Wherein, the greater the numerical value of the guarantee priority, the higher the guarantee priority.

Based on the guarantee priority of each service type, the traffic scheduling server may preferentially determine the transmission link in the backbone network for the traffic of the service type with a higher guarantee priority. For example: the traffic scheduling server first determines the transmission link of the routing network management information traffic in the backbone network, then determines the transmission link of the instant messaging traffic in the backbone network, and then determines the transmission of the HTTP traffic in the backbone network link, and finally determine the transmission link of the P2P service in the backbone network.

Based on the above processing, the traffic scheduling server can determine that the transmission link of the routing network management information service traffic in the backbone network is a link (network device 1-network device 3), and the transmission link of the instant messaging service traffic in the backbone network is Link (network device 1-network device 3), the transmission link of HTTP service traffic in the backbone network is link (network device 1-network device 3), and the transmission link of P2P service traffic in the backbone network is Link (network device1-network-device2, network-device2-network-device3).

In a specific implementation of the embodiment of the present invention, the traffic scheduling server can perform step 202 and subsequent steps when link congestion occurs in the backbone network (for example, the bandwidth usage rate of the link in the backbone network is greater than the preset threshold), and the traffic scheduling server in the backbone network When no link congestion occurs (for example, the bandwidth usage rate of the link in the backbone network is less than the preset threshold), step 202 and subsequent steps are not executed, and processing is performed in the existing manner.

Step 203 , the traffic scheduling server notifies each network device in the backbone network of the transmission link of the traffic of each service type in the backbone network (that is, the forwarding policy corresponding to the service type).

In the embodiment of the present invention, the traffic scheduling server notifies each network device in the backbone network of the transmission link of the traffic of each service type in the backbone network, specifically including but not limited to the following methods:

Mode 1: The traffic scheduling server notifies each network device in the backbone network of the correspondence between the service type and the transmission link of the traffic of the service type in the backbone network through policy routing.

Among them, this method can be applied to traditional network devices (such as routers). By adopting the policy routing method, the traffic scheduling server directly notifies the corresponding relationship between the service type and the transmission link of the traffic of this service type in the backbone network. Each network device in the backbone network.

Method 2: The traffic scheduling server notifies each network device in the backbone network of the corresponding relationship between the service type and the transmission link of the traffic of the service type in the backbone network through a flow table.

Among them, this method can be applied to the SDN (Software Defined Network, software-defined network) network architecture. By using the flow table method (for example, the flow table method can be specifically based on the transport layer port number), the traffic scheduling server directly Each network device in the backbone network is notified of the corresponding relationship between the service type and the traffic of the service type on the transmission link in the backbone network.

Step 204, each network device in the backbone network transmits the traffic of the service type according to the transmission link of the traffic of the business type in the backbone network; for example, when the transmission link of the traffic of the HTTP service in the backbone network is link 1, then Each network device needs to transmit HTTP service traffic through link 1.

In the embodiment of the present invention, after each network device in the backbone network receives the service message to be transmitted, it passes the link layer identification and/or network layer identification (including but not limited to Ethernet, VLAN (Virtual Local AreaNetwork, virtual local area network), MPLS (Multi-Protocol Label Switching, IP, etc.), and/or transport layer identification, can know the service type of the service message, and then can according to the service report The traffic of the service type of the document transmits the traffic of the service type (that is, the corresponding service message) on the transmission link in the backbone network.

To sum up, in the embodiment of the present invention, the transmission of the traffic of each service type in the backbone network can be determined based on the traffic information of various service types transmitted in the backbone network and the link information of each link in the backbone network Links, so as to perform IP network traffic scheduling based on service types (such as HTTP services, instant messaging services, P2P services, etc.); in addition, traffic scheduling can be performed based on delay, jitter, and packet loss rate, and the range of indicators considered is much larger than traditional Traffic engineering; in addition, traffic engineering work is performed through a dedicated traffic scheduling server, and its scheduling accuracy and flexibility are greater than traditional traffic engineering; further, the above method can improve bandwidth utilization, allocate link bandwidth on demand, ensure service experience, and differentiate Traffic scheduling, and avoiding problems such as overloading or congestion of some links while underutilization of other links.

Embodiment two

Based on the same inventive concept as the above method, an embodiment of the present invention also provides a traffic scheduling system based on service type, the system includes:

A traffic scheduling server, configured to obtain traffic information of various service types that need to be transmitted in the backbone network, and obtain link information of each link in the backbone network; and utilize the traffic of various service types Information and the link information of each link determine the transmission link of the traffic of each service type in the backbone network; and notify the transmission link of the traffic of each service type in the backbone network Each network device in the backbone network; the network device is used to transmit the traffic of the service type according to the transmission link in the backbone network of the traffic of the service type.

In the embodiment of the present invention, the system further includes: a traffic analysis device, which is used to analyze the traffic of various types of services that need to enter the backbone network and the traffic of various types of services from the backbone network to obtain traffic information of various business types transmitted in the backbone network, and report the traffic information of various business types that need to be transmitted in the backbone network to the traffic scheduling server, and the traffic scheduling server receives the needs reported by the traffic analysis device Flow information of various business types transmitted in the backbone network; the network device is also used to obtain link information of each link in the backbone network by monitoring the link usage of each link in the backbone network , and report the link information of each link in the backbone network to the traffic scheduling server, and the traffic scheduling server receives the link information of each link reported by the network device in the backbone network.

In the embodiment of the present invention, the network device is specifically configured to, after receiving the service message to be transmitted, pass the link layer identification, and/or network layer identification, and/or transport layer identification of the service message identification to distinguish, obtain the service type of the service message, and transmit the service message on the transmission link in the backbone network according to the traffic of the service type of the service message.

Embodiment three

Based on the same inventive concept as the above method, an embodiment of the present invention also provides a traffic scheduling server. As shown in FIG. Module 13 and policy issuing module 14; the traffic scheduling server also includes a first interface, a second interface and a third interface, the first interface is the interface between the traffic scheduling server and the traffic analysis device, and the second interface is the interface between the traffic scheduling server and the traffic analysis device. The interface for reading link status between network devices in the backbone network. The third interface is the interface for delivering forwarding policies between the traffic scheduling server and network devices in the backbone network. The second interface and the third interface can be physically integrated but logically separated.

A service state perception module 11, configured to acquire traffic information of various service types that need to be transmitted in the backbone network;

A link state perception module 12, configured to acquire link information of each link in the backbone network;

A traffic scheduling module 13, configured to use the traffic information of the various service types and the link information of the links to determine the transmission link of the traffic of each service type in the backbone network;

The policy issuing module 14 is used to notify each network device in the backbone network of the transmission link of the traffic of each service type in the backbone network, and each network device in the backbone network is configured according to the traffic of the service type in the backbone network. The transmission link in the backbone network transmits the traffic of the service type.

The service state perception module 11 is specifically configured to receive the traffic information of various service types that need to be transmitted in the backbone network reported by the traffic analysis device; wherein, the traffic information of the various service types is provided by the traffic analysis device Obtained and reported after analyzing the traffic of various types of services that need to enter the backbone network and the traffic of various types of services from the backbone network;

The link state sensing module 12 is specifically configured to receive the link information of each link reported by the network equipment in the backbone network; wherein, the link information of each link is the link information of the backbone network. The network equipment obtains and reports by monitoring the link usage of each link in the backbone network.

The traffic scheduling module 13 is specifically configured to use the traffic information of various business types to determine the traffic that each business type needs to transmit in the backbone network, and use the link information of each link to determine that each link can carry The traffic of each business type is used to determine the transmission link of the traffic of each business type in the backbone network by using the traffic that needs to be transmitted in the backbone network for each business type and the traffic that each link can carry.

The traffic scheduling module 13 is further used to select a link that can carry traffic greater than the traffic that the business type needs to transmit in the backbone network, and determine the link index corresponding to each selected link; A link whose corresponding link index satisfies the required link index of the service type is used as a transmission link of the traffic of the service type in the backbone network;

Wherein, the link information of each link includes the link index of each link, and the link index includes one or any combination of the following: delay, jitter, packet loss rate;

Among them, the service type includes one or any combination of the following: hypertext transfer protocol HTTP service, point-to-point P2P service, instant messaging service, routing network management information service.

The policy issuing module 14 is specifically configured to notify each network device in the backbone network of the corresponding relationship between the service type and the traffic of the service type in the backbone network in the transmission link through a flow table; or, Informing each network device in the backbone network of the corresponding relationship between the service type and the traffic of the service type in the backbone network through policy routing.

Wherein, each module of the device of the present invention can be integrated into one body, or can be deployed separately. The above modules can be combined into one module, or can be further split into multiple sub-modules.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is a better implementation Way. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a A computer device (which may be a personal computer, a server, or a network device, etc.) executes the methods described in various embodiments of the present invention.

Those skilled in the art can understand that the drawing is only a schematic diagram of a preferred embodiment, and the modules or processes in the drawing are not necessarily necessary for implementing the present invention.

Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description in the embodiment, or can be located in one or more devices different from the embodiment according to corresponding changes. The modules in the above embodiments can be combined into one module, and can also be further split into multiple sub-modules.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

The above disclosures are only a few specific embodiments of the present invention, however, the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (12)

1. A traffic scheduling method based on business type, characterized in that the method comprises: The traffic scheduling server obtains traffic information of various service types that need to be transmitted in the backbone network, and obtains link information of each link in the backbone network; The traffic scheduling server uses the traffic information of the various service types and the link information of the links to determine the transmission link of the traffic of each service type in the backbone network; The traffic scheduling server notifies each network device in the backbone network of the transmission link of the traffic of each service type in the backbone network, and each network device in the backbone network transmits the traffic in the backbone network according to the traffic type of the service type. The transmission link in the network transmits the traffic of this service type; Wherein, each network device in the backbone network, after receiving the service message to be transmitted, distinguishes the link layer identifier, and/or network layer identifier, and/or transport layer identifier of the service message, Obtain the service type of the service message, and transmit the service message according to the traffic of the service type of the service message on the transmission link in the backbone network. 2. The method of claim 1, wherein The traffic scheduling server acquires traffic information of various types of services that need to be transmitted in the backbone network, specifically including: the traffic scheduling server receives traffic information of various types of services that need to be transmitted in the backbone network reported by the traffic analysis device; Wherein, the traffic information of various business types is obtained by the traffic analysis device after analyzing the traffic of various business types that need to enter the backbone network and the traffic of various business types from the backbone network and reported; The traffic scheduling server obtaining the link information of each link in the backbone network specifically includes: the traffic scheduling server receiving the link information of each link reported by the network equipment in the backbone network; wherein The link information of each link is obtained and reported by the network equipment in the backbone network by monitoring the link usage of each link in the backbone network. 3. The method according to claim 1, wherein the traffic scheduling server uses the traffic information of the various service types and the link information of the links to determine that the traffic of each service type is in the Transmission links within the backbone network, specifically including: The traffic scheduling server uses the traffic information of various service types to determine the traffic that each service type needs to transmit in the backbone network, uses the link information of each link to determine the traffic that each link can carry, and uses The traffic that needs to be transmitted in the backbone network for each service type and the traffic that can be carried by each link determine the transmission link for the traffic of each service type in the backbone network. 4. The method according to claim 3, wherein the traffic scheduling server determines the traffic of each business type by using the traffic that each business type needs to transmit in the backbone network and the traffic that each link can carry The transmission links in the backbone network specifically include: The traffic scheduling server selects a link that can carry more traffic than the service type needs to transmit in the backbone network, and determines the link index corresponding to each selected link; The traffic scheduling server selects a link whose link index corresponding to the link satisfies the link index required by the service type as the transmission link of the traffic of the service type in the backbone network; Wherein, the link information of each link includes the link index of each link, and the link index includes one or any combination of the following: delay, jitter, packet loss rate; Among them, the service type includes one or any combination of the following: hypertext transfer protocol HTTP service, point-to-point P2P service, instant messaging service, routing network management information service. 5. The method according to claim 1, wherein the traffic scheduling server notifies each network device in the backbone network of the transmission link of the traffic of each service type in the backbone network, specifically comprising: The traffic scheduling server notifies each network device in the backbone network of the corresponding relationship between the service type and the traffic of the service type in the backbone network through a flow table; or, The traffic scheduling server notifies each network device in the backbone network of the corresponding relationship between the service type and the transmission link of the traffic of the service type in the backbone network through policy routing. 6. A traffic scheduling system based on business types, characterized in that the system includes: A traffic scheduling server, configured to obtain traffic information of various service types that need to be transmitted in the backbone network, and obtain link information of each link in the backbone network; and utilize the traffic of various service types Information and the link information of each link determine the transmission link of the traffic of each service type in the backbone network; and notify the transmission link of the traffic of each service type in the backbone network Each network device in the backbone network; A network device, configured to transmit the traffic of the business type according to the transmission link of the traffic of the business type in the backbone network; Wherein, the network device is specifically configured to distinguish the link layer identifier, and/or network layer identifier, and/or transport layer identifier of the service message after receiving the service message to be transmitted, Obtain the service type of the service message, and transmit the service message according to the traffic of the service type of the service message on the transmission link in the backbone network. 7. The system of claim 6, further comprising: The traffic analysis device is used to analyze the traffic of various business types that need to enter the backbone network and the traffic of various business types from the backbone network to obtain traffic information of various business types that need to be transmitted in the backbone network, and report the traffic information of various types of services that need to be transmitted in the backbone network to the traffic scheduling server, and the traffic scheduling server receives the traffic information of various types of services that need to be transmitted in the backbone network reported by the traffic analysis device traffic information; The network device is also used to obtain the link information of each link in the backbone network by monitoring the link usage of each link in the backbone network, and link the link information of each link in the backbone network The information is reported to the traffic scheduling server, and the traffic scheduling server receives the link information of each link reported by the network device in the backbone network. 8. A traffic scheduling server, characterized in that, the traffic scheduling server includes: A business status awareness module, used to obtain traffic information of various business types that need to be transmitted in the backbone network; A link state perception module, configured to obtain link information of each link in the backbone network; A traffic scheduling module, configured to use the traffic information of the various service types and the link information of the links to determine the transmission link of the traffic of each service type in the backbone network; A policy issuing module, configured to notify each network device in the backbone network of the transmission link of the traffic of each service type in the backbone network, and each network device in the backbone network will transmit the traffic of each service type in the backbone network The transmission link in the backbone network transmits the traffic of this service type; Wherein, each network device in the backbone network, after receiving the service message to be transmitted, distinguishes the link layer identifier, and/or network layer identifier, and/or transport layer identifier of the service message, Obtain the service type of the service message, and transmit the service message according to the traffic of the service type of the service message on the transmission link in the backbone network. 9. The traffic scheduling server according to claim 8, characterized in that, The service state perception module is specifically configured to receive traffic information of various service types that need to be transmitted in the backbone network reported by the traffic analysis device; wherein, the traffic information of the various service types is obtained by the traffic analysis device through The traffic of various types of services that need to enter the backbone network and the traffic of various types of services from the backbone network are obtained and reported after analysis; The link state perception module is specifically configured to receive the link information of each link reported by the network equipment in the backbone network; wherein, the link information of each link is the link information of each link in the backbone network It is obtained and reported by the network device by monitoring the link usage of each link in the backbone network. 10. The traffic scheduling server according to claim 8, characterized in that, The traffic scheduling module is specifically configured to use the traffic information of various business types to determine the traffic that each business type needs to transmit in the backbone network, and use the link information of each link to determine the traffic that each link can carry. traffic, and use the traffic that needs to be transmitted in the backbone network for each service type and the traffic that each link can carry to determine the transmission link for the traffic of each service type in the backbone network. 11. The traffic scheduling server according to claim 10, characterized in that, The traffic scheduling module is further used to select a link that can carry traffic greater than the traffic type that needs to be transmitted in the backbone network, and determine the link index corresponding to each selected link; Selecting a link whose link index corresponding to the link satisfies the link index required by the service type as the transmission link of the traffic of the service type in the backbone network; Wherein, the link information of each link includes the link index of each link, and the link index includes one or any combination of the following: delay, jitter, packet loss rate; Among them, the service type includes one or any combination of the following: hypertext transfer protocol HTTP service, point-to-point P2P service, instant messaging service, routing network management information service. 12. The traffic scheduling server according to claim 8, characterized in that, The policy issuing module is specifically configured to notify each network device in the backbone network of the correspondence between the service type and the traffic of the service type in the backbone network through a flow table; In the policy routing mode, each network device in the backbone network is notified of the corresponding relationship between the service type and the traffic transmission link of the service type in the backbone network.