CN101166146A - Method for Broadband Access Server to Control Triple Service Service - Google Patents

Abstract

The present invention provides a method for a broadband access server to control triple service services, which is characterized in that the method includes the following steps: Step a, configuring the media access control address segment and the Internet access control address segment in global mode on the broadband server protocol routing and forwarding table; step b, associating the IP routing and forwarding table with the access entity, and connecting the user to the broadband server and assigning an IP address to it; and step c, the broadband server according to the IP address and the routing and forwarding table Implement forwarding. The present invention is simple to implement, has nothing to do with network planning, and does not need to redo data on the broadband access server after the Vlan etc. change, and the present invention can simultaneously support IPv4 and IPv6 application scenarios.

Description

Method for Broadband Access Server to Control Triple Service Service

technical field

The invention relates to a method for a broadband access server to carry out triple service business for users in the communication technology, in particular to a method for controlling the triple service business by the broadband access server.

Background technique

Triple-play refers to a combination of voice, data and video services provided by one operating entity under one service brand on the same network or on different networks. Triple service has two meanings: one is business bundling, and the other is business integration. Most telecom operators provide triple services through service integration. On IP networks, telecom operators provide VoIP, broadband and IPTV services bundled.

In order to support real-time services such as voice and video on the IP network, QoS (Quality of Service) support is required to ensure that important, sensitive or real-time data streams are prioritized in the network.

A multi-protocol label virtual private network (MPLS VPN) that implements resource isolation on the broadband access server (BRAS). Each service uses a virtual private network (VPN), which is identical to other virtual private networks in terms of information, users, and network resources. Isolated, there is no difference from running on a physical dedicated network. And, because of sharing a shared physical network using statistical multiplexing technology, it brings additional benefits:

1. With a physical network, the cost of network construction, operation and maintenance are all reduced;

2. Each business network can be "softly expanded" to a certain extent;

3. The traffic peaks of various services are not synchronized, which can reflect the advantages of statistical multiplexing and improve resource utilization.

Since the multi-protocol label virtual private network is a relatively mature technology, operators focus on the broadband access server side to differentiate various services and map them to the routing forwarding table (VRF).

Among the existing means of business differentiation, there are three ways to differentiate:

1. According to the circuit distinction

Plan the VLANs of the Layer 2 network according to the number of user services. Use P-vlan to mark services, and use C-vlan to mark users.

The broadband access server configures the corresponding vlan for the Layer 2 network configuration to realize IP address allocation and forwarding control of the client.

Every time a new service is added, it is necessary to re-plan the Layer 2 network and reconfigure the data of the broadband access server to realize user access.

2. Distinguish according to the access method

According to the user's Internet access service or IPTV service, the access types are used to distinguish them. The Internet service adopts PPPoX encapsulation, and the IPTV service adopts IPoX encapsulation. Therefore, only two kinds of services can be supported, and the Triple-Play mode cannot meet the requirements.

3. Distinguish by username

The user's Internet service, IPTV service, and VoIP service all adopt the PPPoX access method, but are mapped to different routing and forwarding tables according to the domain name in the username@Domain format.

In this way, all business clients must support PPPoX dial-up, which requires relatively high requirements for business clients, and device configuration management is relatively complicated. Many existing devices do not support this access method.

Contents of the invention

The purpose of the present invention is to provide a method for a broadband access server to control triple service services.

According to one aspect of the present invention, a method for controlling a triple play service by a broadband access server is provided.

According to the method provided by the present invention for the broadband access server to control the triple service service, it is characterized in that the method includes the following steps: step a, configure the media access control address segment and the Internet access control address segment in the global mode on the broadband server protocol routing and forwarding table; step b, associating the IP routing and forwarding table with the access entity, and connecting the user to the broadband server and assigning an IP address to it; and step c, the broadband server according to the IP address and the routing and forwarding table Implement forwarding.

Wherein, step b in the above method further includes the following steps:

Step b1, establish a corresponding relationship between the media access control address segment and the routing forwarding table through the function about the mapping of the media access control to the routing forwarding table, so as to obtain the identification of the routing forwarding table; Step b2, obtain the association according to the identification of the routing forwarding table interface, and find an idle IP address under the interface; and step b3, assign the IP address and routing and forwarding table identifier to the user, and record the user's routing and forwarding table in the user forwarding table.

Wherein, in step a, the identifier of the route forwarding table includes a route identifier and a destination route identifier (route-target). In addition, for the Internet protocol access mode, a routing forwarding table is associated with the ingress interface, and the Internet protocol address allocated by the user belongs to the interface address space. In addition, an access entity includes an access interface and a domain. In addition, for the end-to-end protocol access mode, a routing and forwarding table is associated with the domain, and the IP address assigned by the user belongs to the interface dynamically associated with the domain. Moreover, the order of determining the priority of the routing forwarding table identifier is media access control, permanent virtual connection, interface, and user name. In addition, the Broadband Server supports multi-protocol tagged virtual private network networks.

Moreover, in step c of the above method, the user forwarding table is searched according to the routing forwarding table identifier and the IP address, so as to realize forwarding.

The present invention adopts the routing forwarding table mapping based on the media access control address, which is equivalent to mapping the layer 2 address to the layer 3 routing forwarding table. A point-to-point serial connection is actually established between the user and the broadband access server. The forwarding of user data packets has nothing to do with user source IP. Based on this, the present invention can reach following beneficial effect:

1. According to the media access control address range of the client equipment, such as IAD and STB, the routing and forwarding table is directly distinguished, so as to conveniently distinguish services. The implementation is simple and has nothing to do with network planning. After the Vlan etc. are changed, there is no need to redo the data on the broadband access server.

2. Since the address allocation and routing processes are based on the user's media access control address as the mapping standard and have nothing to do with the user's IP address, it can support both IPv4 and IPv6 application scenarios.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Figure 1 shows a schematic diagram of a network device according to the present invention;

FIG. 2 shows a flowchart of a method for a broadband access server to control a triple service service according to a first embodiment of the present invention;

FIG. 3 shows a block diagram of an apparatus for a broadband access server to control triple play services according to a second embodiment of the present invention; and

Fig. 4 shows a flow chart of allocating IP addresses according to the third embodiment of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

first embodiment

According to the first embodiment of the present invention, a method for a broadband access server to control triple play services is provided. The method will be described below with reference to FIG. 2 .

Fig. 2 is a flowchart illustrating a method for a broadband access server to control triple play services according to an embodiment of the present invention. As shown in FIG. 2 , the method for the broadband access server to control the triple service service according to the embodiment of the present invention includes the following steps: Step 202, configure the media access control address segment and the Internet protocol in the global mode on the broadband server Routing and forwarding table; step 204, associating the Internet protocol routing and forwarding table with the access entity, and connecting the user to the broadband server and assigning an Internet protocol address to it; and step 206, implementing the broadband server according to the Internet protocol address and the routing and forwarding table Forward.

Wherein, step 204 in the above method further includes the following steps: establishing a corresponding relationship between the media access control address segment and the routing forwarding table through a function related to the mapping of the media access control to the routing forwarding table, so as to obtain the identification of the routing forwarding table; The identification of the routing and forwarding table obtains the associated interface, and finds an idle IP address under the interface; and assigns the IP address and the routing and forwarding table identification to the user, and records the user's routing and forwarding table in the user forwarding table.

Wherein, the identifier of the routing forwarding table includes a routing identifier and a destination routing identifier. In addition, an access entity includes an access interface and a domain. Moreover, for the Internet protocol access mode, a routing forwarding table is associated with the ingress interface, and the Internet protocol address allocated by the user belongs to the interface address space. In addition, for the end-to-end protocol access mode, a routing and forwarding table is associated with the domain, and the IP address assigned by the user belongs to the interface dynamically associated with the domain. Moreover, the order of determining the priority of the routing forwarding table identifier is media access control, permanent virtual connection, interface, and user name. In addition, the Broadband Server supports multi-protocol tagged virtual private network networks.

Moreover, in step 206 of the above method, the user forwarding table is searched according to the routing forwarding table identifier and the IP address, so as to realize forwarding.

Configure the mapping relationship between the media access control address and the routing and forwarding table, implement a media access control table on the bearer, and query to obtain the routing and forwarding table number.

second embodiment

According to the second embodiment of the present invention, an apparatus 300 for controlling a triple play service by a broadband access server is provided. The apparatus 300 will be described below with reference to FIG. 3 .

As shown in FIG. 3 , an apparatus 300 for a broadband access server to control a triple play service according to an embodiment of the present invention includes: a setting module 302 configured to configure a media access control address segment in a global mode on the broadband server and Internet protocol routing and forwarding table; processing module 304, for associating the Internet protocol routing and forwarding table with the access entity, and connecting the user to the broadband server and assigning an Internet protocol address to it; and forwarding module 306, for making the broadband server The forwarding is realized according to the IP address and the routing forwarding table.

Wherein, the above-mentioned processing module 304 includes: an associating module, which is used to establish a corresponding relationship between the media access control address segment and the routing forwarding table through a function related to the mapping of the media access control to the routing forwarding table, so as to obtain the identification of the routing forwarding table; The module is used to obtain the associated interface according to the identification of the routing and forwarding table, and finds an idle Internet protocol address under the interface; The routing and forwarding table of the user is recorded in the publication.

Wherein, the identifier of the routing forwarding table includes a routing identifier and a destination routing identifier.

In addition, an access entity includes an access interface and a domain.

In addition, for the Internet protocol access mode, the routing and forwarding table is associated on the ingress interface, and the Internet protocol address allocated by the user belongs to the interface address space. Moreover, for the end-to-end protocol access mode, the routing and forwarding table is associated on the domain, and the Internet protocol address allocated by the user belongs to the interface dynamically associated with the domain.

Moreover, in this device, the order of determining the priority of the routing and forwarding table identifier is media access control, permanent virtual connection, interface, and user name. In addition, the forwarding module searches the user forwarding table according to the routing forwarding table identifier and the IP address, so as to realize forwarding. Broadband server supports multi-protocol label virtual private network network.

third embodiment

According to the first embodiment of the present invention, the present invention also provides a method for a broadband access server to control triple play services, which will be described below with reference to FIG. 3 .

As shown in Figure 4, the method includes the following steps:

The first step is to configure the media access control address segment in the global mode on the broadband server. Among them, the media access control address has global uniqueness. Among the 48-bit media access control addresses that are widely used at present, the first 24 bits are the manufacturer's address applied by the manufacturer of the network card to IEEE, and the last 24 bits are allocated internally by the manufacturer. For each device, and on the broadband access server, configure the media access control address segment as an access method;

The second step configures the IP routing and forwarding table in the global mode, configures a routing and forwarding table, and specifies the necessary attribute routing identifier of the routing and forwarding table, that is, the destination routing identifier;

The third step is associating the routing and forwarding table with the access entity. Since there are many access methods to the access server, the routing and forwarding table association work is rather complicated. For the IP access method, the routing and forwarding table can be associated with the ingress interface, and the ip address assigned by the user belongs to the interface address space; for PPP access In this way, the routing and forwarding table can be associated with the domain, and the ip address assigned by the user belongs to the interface dynamically associated with the domain;

In the fourth step, the user accesses the broadband server and assigns an address. For the IP access mode, a routing forwarding table can be associated with the ingress interface, and the ip address assigned by the user belongs to the address space of the interface; for the PPP access mode, a routing forwarding table can be associated with the domain, and the ip address assigned by the user belongs to the address space of the interface. domain dynamically associated interfaces; and

In the fifth step, the access server forwards to the multi-protocol label virtual private network according to the IP address and the routing forwarding table.

Moreover, in the equipment network, in order to realize the routing and forwarding table management based on media access control, in addition to the broadband access server itself completing the mapping from the media access control address to the routing and forwarding table, if the entire service is to be carried out, there must be a Supports network coordination for multi-protocol tag virtual private networks.

Figure 1 shows the routed MAN network.

Moreover, Layer3 multi-protocol label virtual private network is a multi-protocol label virtual private network solution based on routing. This virtual private network technology is described in IETF RFC2547. MPLS Layer3 virtual private network is also called BGP /MPLS VPNs. BGP/MPLS VPN uses a method similar to traditional routing to forward IP packets. After the router receives the IP packets, it looks up the destination address of the IP packets in the forwarding table, and then uses the pre-established LSP to carry out inter-operator backbone IP data transmission.

Among them, the BGP/MPLS VPN solution supports peer-to-peer virtual private network network structure. Between PEs, the routing information belonging to the same multi-protocol label virtual private network is exchanged through the BGP protocol bearer. PE routers use LSPs for routing and forwarding. The operator router P does not need to know the information of the customer's virtual private network. This transparency can effectively reduce the burden on router P and improve network scalability and business flexibility. Through the routing interaction between PEs and between PEs and CEs, the customer's router can know the network topology information belonging to the same virtual private network.

Moreover, BGP/multi-protocol label virtual private network can solve some functions that cannot be realized based on pure IP Layer3 virtual private network, mainly including: support for address overlap, that is, support for client devices with public addresses and client devices with private addresses at the same time, Or multiple virtual private networks use the same address space; and support overlapping virtual private networks, that is, a site can belong to multiple virtual private networks at the same time.

Moreover, for traditional route-based virtual private networks, it is challenging to solve the above problems. The multi-protocol label virtual private network uses a virtual private network routing and forwarding table (routing and forwarding table) to solve the problem of address overlap. On the PE router of the operator, use a routing and forwarding table based on each virtual private network to isolate the routes of different virtual private networks. Through the isolation of routing information, the overlapping of virtual private network addresses is supported. If multiple CEs on a PE belong to the same VPN, these CEs share the routing and forwarding table of the VPN on the PE. In the case of overlapping virtual private networks, the site where the overlapping occurs needs to use an independent routing and forwarding table to store routing information from the virtual private network to which it belongs.

Moreover, another problem of address overlap is that PE routers will receive overlapping routing information belonging to different virtual private networks from neighbors' BGP updates. In order to distinguish the routing information from different virtual private networks, PE uses 8octet routing identification (RD) to mark the routing information from different virtual private networks. This 8octet routing identifier constitutes a new address class (VPN-IPv4 address) as an extension of the 4octet IP address prefix. The route identifier does not participate in the process of route publishing, and its role is only to distinguish routes belonging to different virtual private network sites. A one-to-one mapping relationship is established between the routing identifier and the routing forwarding table, and the routing forwarding table will attach corresponding routing identifier information when publishing routing information. For the case of overlapping virtual private networks, although this type of site belongs to multiple virtual private networks at the same time, it only needs one routing identifier, and does not need multiple routing identifiers to correspond to multiple routing and forwarding tables. The main purpose is to save Storage resources on PE routers.

In the implementation of the broadband access server product, the implementation of the routing and forwarding table based on the media access control address on the broadband access server includes the following two stages:

The first stage is the address allocation process. According to the mapping relationship between the user's media access control address and the routing and forwarding table, the attribute of the calling user's routing and forwarding table is obtained, and an IP address is assigned to the client in the interface associated with the routing and forwarding table.

The second stage is the business forwarding process. Obtain the mapping relationship with the routing forwarding table according to the user's media access control address, obtain the routing forwarding table attribute, and use it together with the destination IP address as the label of the user's routing to realize routing forwarding.

Its implementation principles include:

1. Statically configure the correspondence between media access control addresses and routing and forwarding tables. Manually configure the corresponding relationship between the MAC address and the routing and forwarding table, that is, generate a function about the mapping of the media access control to the routing and forwarding table: ID _vrf = f(MAC).

2. Establish ID _vrf get priority. According to the user's physical information, user name and other information, determine the ID _vrf priority as: media access control->permanent virtual connection->interface->user name.

3. Assign an IP address. Allocate IP addresses according to user access methods. Its process is shown in Figure 2.

In the first step, according to the order of the second step, the ID _vrf is obtained;

The second step is to obtain the associated interface according to the routing forwarding table ID;

The third step is to find an idle IP address under the interface, assign the IP address to the user, and record the user's routing forwarding table in the user forwarding table; and

In the fourth step, the user data packet is forwarded. According to the mapping relationship in the first step, according to the user source media access control, the ID _vrf of the user is obtained, and the routing table is queried according to the ID _vrf and the destination IP, and then forwarded.

Using the routing forwarding table mapping based on the media access control address is equivalent to mapping the layer 2 address to the layer 3 routing forwarding table. A point-to-point serial connection is actually established between the user and the broadband access server. The forwarding of user data packets has nothing to do with user source IP. Based on this, the present invention can reach following beneficial effect:

1. According to the media access control address range of the client equipment, such as IAD and STB, the routing and forwarding table is directly distinguished, so as to conveniently distinguish services. The implementation is simple and has nothing to do with network planning. After the Vlan etc. are changed, there is no need to redo the data on the broadband access server.

2. Since the address allocation and routing processes are based on the user's media access control address as the mapping standard and have nothing to do with the user's IP address, it can support both IPv4 and IPv6 application scenarios.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. one kind is used for the method that BAS Broadband Access Server is controlled triple service business, it is characterized in that, described method comprises:

Step a disposes medium access control address section and Internet protocol virtual routing forwarding with global schema on described broadband server;

Step b is associated described Internet protocol virtual routing forwarding with inserting entity, and described user is inserted described broadband server and to its distribution network internet protocol address; And

Step c, described broadband server is realized transmitting according to described internet protocol address and described virtual routing forwarding.

2. method according to claim 1 is characterized in that, described step b comprises:

Step b1 sets up corresponding relation with described medium access control address section and described virtual routing forwarding by the function that is mapped to described virtual routing forwarding about described medium access control system, to obtain the sign of described virtual routing forwarding;

Step b2 obtains the interface of association according to the sign of described virtual routing forwarding, and finds idle internet protocol address under described interface; And

Step b3 distributes to described user with described internet protocol address and virtual routing forwarding sign, and write down described user's virtual routing forwarding in the user transmits.

3. method according to claim 2 is characterized in that, the sign of described virtual routing forwarding comprises Route Distinguisher and purpose Route Distinguisher.

4. method according to claim 1 is characterized in that, described access entity comprises access interface and territory.

5. method according to claim 4 is characterized in that, for described Internet protocol access way, and related described virtual routing forwarding on described ingress interface, the described internet protocol address that described user distributes belongs to described interface IP address space.

6. method according to claim 4 is characterized in that, for the end-to-end protocol access way, and related described virtual routing forwarding on described territory, the described internet protocol address that described user distributes belongs to the interface that described territory dynamically associates.

7. method according to claim 2 is characterized in that, determines that the order of the priority of virtual routing forwarding sign is described medium access control system, permanent virtual connection, interface and user name.

8. method according to claim 1 is characterized in that, in described step c, according to described virtual routing forwarding sign and described internet protocol address, searches described user and transmits, to realize forwarding.

9. method according to claim 1 is characterized in that, described broadband server is supported the multiprotocol label Virtual Private Network.

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