CN1189825C - IP address allocating method of virtual local network switch on - Google Patents

Abstract

The invention relates to an IP address allocation method in virtual local area network (VLAN) access, which can allocate IP addresses of corresponding levels according to user priorities. Including: the network management equipment classifies the IP address resources according to the priority service level, and the priority service level corresponds to the priority level of the IP address resource one by one; according to the priority service level selected by the access user terminal when opening an account, the IP Select an IP address from the address resources and assign it to the terminal user; the network access device classifies and forwards the user packet data flow according to the corresponding priority service level according to the priority level of the IP address of the user terminal. The main features are assigning different levels of IP addresses according to different priority levels of VLAN users; changing priority levels according to user needs; changing IP address resource division according to changes in priority levels; and classifying and forwarding user data flows according to priority levels. It can meet the diverse needs of users and make reasonable use of IP address resources.

Description

A Method of Assigning IP Address in Virtual Local Area Network Access

technical field

The present invention belongs to the technical field of broadband access, and more precisely relates to a method for assigning different IP addresses to VLAN users in VLAN access to meet different requirements of users and rationally utilizing IP address resources, which can be used in Ethernet Access and other IP communication services.

Background technique

Ethernet access is one of the currently popular broadband access methods, and there are two main solutions: VLAN and VLAN+PPPOE (PPP over Ethernet, PPP over Ethernet). Through VLAN (Virtual Local Area Network) access, a group of user terminals and servers located on different physical network segments can be logically divided into a terminal station group, thereby reducing the cost caused by the movement or change of user terminals or servers, and realizing Dynamic network management, at the same time, broadcast packets can be limited to a VLAN, and the information can be kept confidential.

Referring to Fig. 1, a kind of typical VLAN networking structure is shown in the figure: circle 11 represents end user (User User) among the figure, as PC etc. Frame 12 is a hub or a virtual local area network (Hub or VLAN UnSuported LAN Switch) that is not supported by a LAN switch, for the situation that a VLAN supports multiple user terminals. Frame 13 represents a LAN switch (LANSwitch 1 and LAN Switch 2) containing n ports. Frame 14 represents the LAN switching core (Lan Switch Core). Box 15 represents a router (Router). The thin solid line represents the connection processing port (Access Port), and the thick solid line represents the connection trunk port (Trunk Port).

VLAN access is a solution proposed on the basis of a switched LAN to make the physical location of nodes independent of the logical subnet. VLAN access is to identify different users according to the technical characteristics of VLAN IEEE 802.1q divided by port, and to identify different users according to the virtual local area network identifier (VLAN ID) in the Trunk message, and to charge according to the access traffic of each VLAN ID. VLAN ID is allocated according to the Access port on the LAN Switch at the access edge, it can be aimed at ordinary users of a single node (one VLAN ID supports one user), and can also be aimed at user groups with their own network structure (one VLAN ID supports multiple users).

Broadband access places high demands on user management, security management, service management and billing management. The so-called service management refers to that the access network needs to support multicast services, and needs to provide certain means for guaranteeing service or service quality (QoS). Different types of users have different requirements for services, and the access network needs to meet the needs of users for this customized service. Therefore, it is necessary to effectively manage user bandwidth and priority, not only to prevent users from occupying too much bandwidth, but also to guarantee the bandwidth promised by users; not only to limit the upstream bandwidth of a specific user, but also to Limit the user's downlink bandwidth. In addition, it is also possible to give different IP priorities according to different user types, so as to obtain different service levels (Diff-Serv QoS support). Since the classification of the user's data flow is triggered by the IP address allocated to the user, when allocating IP addresses, different types of IP addresses should be allocated to different types of users.

In VLAN access, the Dynamic Host Configuration Protocol (DHCP) is generally used to assign IP addresses to users, that is, to assign IP addresses to users through an external DHCP server (SERVER). This method can only be allocated according to the network segment, which obviously cannot meet the needs of business management and users for customized services.

On the other hand, the current IP address resources are also very limited, and the rational allocation of IP addresses has become an important content in network operation and maintenance, especially in VLAN access. Therefore, a new method for allocating IP addresses is needed to meet the diverse requirements of users.

Contents of the invention

The purpose of the present invention is to design an IP address allocation method for virtual local area network access. In VLAN access, IP addresses of different levels are allocated according to the priority of VLAN users, and the priority can be changed at any time according to user needs, so as to satisfy different users in real time. various needs.

The technical scheme that realizes the object of the present invention is such: a kind of IP address distribution method in the virtual local area network access, it is characterized in that:

A. The network management equipment classifies IP address resources according to predetermined priority service levels, and the priority service levels correspond to the priority levels of IP address resources one by one;

B. The network management device selects an IP address from the IP address resources of the corresponding priority level and assigns it to the terminal user according to the priority service level selected by the access user terminal when opening an account;

C. The network access device sets the corresponding priority service level according to the IP address priority level of the user terminal, and classifies and forwards the user packet data flow according to the priority service level.

In said step A, the network management device adjusts the IP address resources under each priority service level according to the usage rate selected by the user, increases the number of IP address resources under the priority service level with high user selection rate, and reduces the number of IP address resources selected by the user. The number of IP address resources under the priority service class with low rate.

In the step A, the corresponding relationship between the priority service level and the priority level of the IP address resource is implemented through command line configuration.

In the step B, in the next access after the user terminal modifies the selected priority service level, the network management device selects an IP address allocation from the IP address resources corresponding to the priority level according to the modified priority service level to the end user.

In the step C, for the message data flow of the high-priority user terminal, its network resources are reserved and the corresponding processing work is completed by the network, and for the message data flow of the low-priority user terminal, network resources are not reserved, providing Try to send the service.

In the VLAN access, the present invention allocates IP addresses of different levels according to different priority levels of VLAN users; the priority level can be changed according to user needs; the division of IP address resources can be changed according to the change of priority levels; and user data can be realized according to the priority levels of users. Traffic classification meets service management requirements.

The present invention only needs to classify IP address resources in advance by the network management equipment, and the user selects the priority level when the user opens an account, so that the technical solution of assigning IP addresses according to the priority level in VLAN access can be realized, and user data flow can be realized. Classification and business management, and user levels can be changed in real time according to user needs. The realization is simple and convenient, and the effect is obvious.

Description of drawings

Figure 1 is a schematic diagram of a typical virtual local area network networking structure;

Fig. 2 is a block flow diagram of implementing the IP address allocation method of the present invention in virtual local area network access.

Detailed ways

Referring to FIG. 2 , it is the implementation of the IP address allocation method and implementation process of the present invention in virtual local area network access.

The user opens an account, the user opens an account at the user management center, and at the same time applies for the required priority service level, and the service provider charges the corresponding fee according to the priority level selected by the user. Users can choose the service level they need from the priority service levels allowed by the user management center. For example, the network management equipment provides three priority service levels: A, B, and C, with A being the highest and C being the lowest. At the same time, the network management equipment also divides the IP address resources it owns into three levels of A, B, and C according to three priority service levels. The three priority service levels A, B, and C are respectively related to the three IP address resource levels A, B and C correspond, that is, each priority service level has its own level of IP address resources (number). This can be done through command line configuration.

ip local pool 1 ip-addr 10.10.10.10 length 100 class A

ip local pool 2 ip-addr 10.10.20.10 length 100 class B

ip local pool 3 ip-addr 10.10.30.10 length 100 class C

The above command line configuration lists the IP addresses 10.10.10.10, 10.10.20.10, 10.10.30.10 and the total number of IP addresses 100 in the IP address pools 1, 2, and 3 of priority A, B, and C respectively.

When a user accesses and allocates an address, the network management device allocates an IP address to the user from the IP address pool under the corresponding priority level according to the priority level applied by the user.

When users enjoy the service, network access devices (such as network servers, media gateways, routers, etc.) set different service levels according to the IP source address of the message when forwarding the message, so that the data flow of the user message is processed according to the service level. Classification, different categories correspond to different priorities, enjoy different services, and will also be charged different fees. For high-priority data streams, network resources need to be reserved and the network needs to complete corresponding processing work to enjoy guaranteed services; for low-priority data streams, there is no need to reserve network resources. You can only enjoy the "best effort" service, that is, send as much as possible when the network is free.

Users can apply to the user management center to change their service levels at any time according to changes in their own needs, and the service provider adjusts the fees charged according to changes in user priority levels. The change will take effect the next time the user accesses, and the network management device will assign the user an IP address with a new priority level and enjoy the service with the new priority level. This method of changing the priority level at any time according to user needs can improve the flexibility and real-time performance of the access device.

For service providers, IP address resource division can be changed according to the user's usage (selection rate), increase or decrease the number of IP addresses under the corresponding priority, and improve the use efficiency of IP addresses.

The method of the invention is proved to have good practicability and reliability through the pilot application of the media gateway equipment.

Claims (5)

1. A kind of IP address allocation method in virtual local area network access, it is characterized in that: A. The network management equipment classifies IP address resources according to predetermined priority service levels, and the priority service levels correspond to the priority levels of IP address resources one by one; B. The network management device selects an IP address from the IP address resources of the corresponding priority level and assigns it to the terminal user according to the priority service level selected by the access user terminal when opening an account; C. The network access device sets the corresponding priority service level according to the IP address priority level of the user terminal, and classifies and forwards the user packet data flow according to the priority service level. 2. A method for allocating IP addresses in virtual local area network access according to claim 1, characterized in that: in said step A, the network management device assigns the IP address under each priority service level according to the user's choice of usage rate. Address resources are adjusted to increase the number of IP address resources that users choose under the priority service level with high usage rate, and reduce the number of IP address resources under the priority service level that users choose with low usage rate. 3. A method for assigning an IP address in virtual local area network access according to claim 1, characterized in that: in said step A, the corresponding relationship between the priority service level and the priority level of the IP address resource is configured through a command line Achieved. 4. A method for assigning an IP address in virtual local area network access according to claim 1, characterized in that: in said step B, in the next access after the user terminal modifies the selected priority service level, According to the modified priority service level, the network management device selects an IP address from IP address resources corresponding to the priority level and assigns it to the terminal user. 5. A kind of IP address distribution method in the virtual local area network access according to claim 1, it is characterized in that: in the described step C, for the message data stream of high priority level user terminal, keep its network resource and by The network completes the corresponding processing work, and does not reserve network resources for the packet data flow of low-priority user terminals, and provides the service of sending as much as possible.

Images