TWI663856B - Network resource allocation server and network resource allocation method - Google Patents

Abstract

The disclosure provides a network resource allocation server for allocating network resources to terminal devices. The network resource allocation server has a communication unit, a storage unit, and a processing unit. The communication unit receives a resource allocation request packet from the terminal device. The storage unit stores the packet pre-processing module and the resource assignment module, and is accessed and executed by the processing unit. After the communication unit receives the resource allocation request packet from the terminal device and before the resource allocation request packet is disassembled, the packet preprocessing module retrieves the resource allocation request packet to obtain the device information of the terminal device, and determines the corresponding terminal according to the device information. Device's network resources. The resource assignment module allocates network resources to the terminal device according to the device information and the information of the network resources. This disclosure also provides corresponding network resource allocation methods.

Description

Network resource allocation server and network resource allocation method

The disclosure relates to a network resource allocation technology, and more particularly to a network resource allocation server and a network resource allocation method.

In order to cope with the transition period between the conversion of Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6), the existing network architecture adopts a dual-stack method. To support both IPv4 and IPv6. In addition, in order to be able to automatically distribute IPv4 and IPv6 addresses, Dynamic Host Configuration Protocol version 4 (DHCPv4) and Dynamic Host Configuration Protocol version 6 (Dynamic Host Configuration Protocol version 4) designed for IPv4 and IPv6 standards Host Configuration Protocol version 6 (DHCPv6) is also applied to the network architecture.

However, when allocating IP addresses, DHCPv4 is allocating IPv4 based on the media access control address (MAC address) of the terminal device, and DHCPv6 is based on the DHCP Unique Identifier of the terminal device. , DUID) allot IPv6. Although the same terminal device can be successfully run under the IPv4 and IPv6 architectures after allocating IPv4 and IPv6, because the basis for the allocation is not the same, IPv4 and IPv6 of the same terminal device have no correlation. This leads to inconvenience in management. Therefore, how to improve the efficiency of management is a subject devoted by those skilled in the art.

The disclosure provides a network resource allocation server and a network resource allocation method for allocating network resources to terminal devices so that the terminal devices use mutually corresponding network resources under different network environments.

In an embodiment of the present disclosure, the network resource allocation server has a communication unit, a storage unit, and a processing unit, and the communication unit and the storage unit are respectively coupled to the processing unit. The communication unit receives a resource allocation request packet from the terminal device. The storage unit stores a plurality of modules, and the processing unit accesses and executes the plurality of modules. Among the multiple modules, there are at least a pre-packet processing module and a resource assignment module. The packet preprocessing module receives the resource allocation request packet from the terminal device after the communication unit, and before the resource allocation request packet is disassembled, retrieves the resource allocation request packet to obtain the device information of the terminal device. The pre-packet processing module determines network resources corresponding to the terminal device according to the device information. The resource assignment module allocates network resources to the terminal device according to the device information and the information of the network resources determined by the packet pre-processing module.

In an embodiment of the present disclosure, the network resource allocation method has a step of receiving a resource allocation request packet from a terminal device. Before the resource allocation request packet is disassembled, the resource allocation request packet from the terminal device is retrieved to obtain the device information of the terminal device. Determine the network resources corresponding to the terminal device based on the device information. Allocate network resources to terminal devices based on device information and network resource information.

Based on the above, in the network resource allocation server and network resource allocation method provided in this disclosure, the resource allocation request transmitted by the terminal device is intercepted before the resource allocation request packet is disassembled, and the resource allocation module assigns the network resource. Packet. In this way, the network resource allocation server can assign corresponding network resources according to the device information carried in the packet, so that the same terminal device can use related network resources in different network environments, and improve the convenience of network management. .

In order to make the above-mentioned features and advantages of the present disclosure more comprehensible, embodiments are described below in detail with reference to the accompanying drawings.

FIG. 1 is a structural diagram of a network resource allocation server according to an embodiment of the disclosure. Referring to FIG. 1, the network resource allocation server 100 disclosed herein is used to allocate network resources to the terminal device 10 so that the terminal device 10 can use the allocated network resources to connect to the network. In an embodiment of the present disclosure, the network resource allocation server 100 includes, for example, a dynamic host configuration protocol version 4 (DHCPv4) and a dynamic host configuration protocol version 6 (Dynamic Host Configuration Protocol version 6). 6, DHCPv6) server host. The network resources are, for example, Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6). The terminal device 10 can be based on at least one network protocol (for example, Internet Protocol (IP), Transmission Control Protocol (TCP), User Datagram Protocol (UDP), etc.) Devices that transfer data or connect to the Internet, such as mobile phones, computers, laptops, tablets, and Internet-enabled appliances.

The network resource allocation server 100 includes a communication unit 110, a storage unit 120, and a processing unit 130. The communication unit 110 performs transmitting and receiving signals. The communication unit 110 may be an IEEE 802.3 / ab / u / x / z Ethernet, Global System for Mobile Communication (GSM) system, or a Personal Handy-phone System. PHS), Code Division Multiple Access (CDMA) system, Wireless Fidelity (WiFi) system, Worldwide Interoperability for Microwave Access (WiMAX) system, third generation wireless One or a combination of communication technology (3G), Long Term Evolution (LTE), and Dedicated Short Range Communication (DSRC).

The storage unit 120 may be any type of fixed or removable random access memory (RAM), read-only memory (ROM), flash memory, or similar elements. Or a combination of the above. In this embodiment, the storage unit 120 is used to store software programs such as the pre-packet processing module 122, the resource assignment module 124, and the pre-processing module 126, the data required when executing the above modules, and the processing units 130 to execute All kinds of code. In addition, the storage unit 120 also records a resource allocation table. The functions performed by the pre-packet processing module 122, the resource assignment module 124, and the pre-processing module 126, and the content of the resource allocation table will be described in detail later.

The processing unit 130 is connected to the communication unit 110 and the storage unit 120. The processing unit 130 is, for example, a central processing unit (CPU), or other programmable general purpose or special purpose microprocessor (Microprocessor), digital signal processor (DSP), or programmable Controller, application specific integrated circuit (ASIC) or other similar components or a combination of the above components. In this embodiment, the processing unit 130 accesses and executes the modules recorded in the storage unit 120, and performs a network resource allocation operation.

In a network architecture that uses both IPv4 and IPv6, since DHCPv4 allocates IPv4 based on the media access control address (MAC address) of the terminal device, DHCPv6 is based on the DHCP unique identifier of the terminal device ( DHCP Unique Identifier (DUID). For example, the header structure of a general packet has multiple frames conforming to the Open System Interconnection Reference Model (OSI). The various frames and their recorded contents are the contents that those with ordinary knowledge in the field can understand based on the general ordinary knowledge, and will not be repeated here. In a general network resource allocation server, when a communication unit receives a packet, the processing unit first unlocks the data link layer (Data Link Layer) frame, and then unlocks the network layer (Network Layer). Message frame, and finally distribute IP based on the identification information of the terminal device (for example: MAC address or DHCP Unique Identifier (DUID)) recorded in the packet.

However, because DHCPv4 and DHCPv6 allocate IP addresses on different basis, there is no correlation between IPv4 and IPv6 allocated to the same terminal device. In order to improve the management efficiency, a packet pre-processing module 122, a resource assignment module 124, and a pre-processing module 126 are provided in this disclosure, so that the IPv4 and IPv6 addresses allocated by the same terminal device 10 generate substantial information. Relevance. The tasks performed by the packet pre-processing module 122, the resource assignment module 124, and the pre-processing module 126 and detailed execution methods will be described in detail below.

FIG. 2 is a flowchart of a network resource allocation method according to an embodiment of the disclosure. Please refer to FIG. 1 and FIG. 2 at the same time. In an embodiment of the present disclosure, the processing unit 130 continuously runs the packet pre-processing module 122 and the resource assignment module 124. In step S201, the communication unit 110 receives a resource allocation request packet from the terminal device 10. The resource allocation request packet is sent to the network resource allocation server 100 in a broadcast manner, so as to request the network resource allocation server 100 for resources required for networking (such as an IPv6 address). How to send a resource allocation request packet to the network resource allocation server 100 in a broadcast manner is a technique well-known to those having ordinary knowledge in the art, and is not repeated here.

In step S203, the packet pre-processing module 122 retrieves the resource allocation request packet before the packet is disassembled to obtain the device information of the terminal device. Specifically, the packet pre-processing module 122 intercepts the resource allocation request packet before the data link layer frame of the packet is disassembled. In this way, the packet pre-processing module 122 can read the information carried by the data link layer frame and the network layer frame to obtain the device information of the terminal device 10. For example, the packet pre-processing module 122 may obtain the MAC address of the terminal device 10 from the data link layer frame. In addition, the packet pre-processing module 122 also retrieves the DUID of the terminal device 10.

After the pre-packet processing module 122 obtains the device information, in step S205, the pre-packet processing module 122 can determine the network resources corresponding to the terminal device according to the device information. In the embodiment of the present disclosure, the network resource is an IPv6 address.

Specifically, the storage unit 120 stores a resource allocation table. This resource allocation table records the DUID, MAC address, and IPv4 address of multiple terminal devices, and each DUID corresponds to a different terminal device. The content and format of the resource allocation table is, for example, the format and content described in Table 1. However, the content and format recorded in the resource allocation table will be designed according to actual needs, and this disclosure is not limited thereto. Table 1: Resource allocation table

In this embodiment, when the packet pre-processing module 122 intercepts the packet from the terminal device 10, and obtains the MAC address of the source end of the packet through steps S201 and S203 as "AA: BB: CC: AA: BB: CC ". At this time, the packet pre-processing module 122 searches the resource allocation table according to the MAC address to obtain that the IPv4 address used by the terminal device 10 corresponding to the MAC address is "101.101.101.101". Then, the packet pre-processing module 122 determines the IPv6 address allocated to the terminal device 10 according to the IPv4 address of the terminal device 10. In this embodiment, the suffix of the IPv6 address allocated by the packet pre-processing module 122 is the IPv4 address of the terminal device 10, that is, "101.101.101.101". For example, the assigned IPv6 address is "2001: 4200: 1000: 1000: 1000: 1000: 1000: 101.101.101.101". It should be noted that the prefix of the IPv6 address will change according to the IP pool that the network resource allocation server can allocate, and this disclosure is not limited to this.

After the pre-packet processing module 122 determines that the network resource allocated to the terminal device 10 is an IPv6 address "2001: 4200: 1000: 1000: 1000: 1000: 1000: 101.101.101.101", the pre-packet processing module 122 will The network resource is the information of the above address and the device information of the terminal device 10 is sent to the resource assignment module 124. Next, in step S207, the resource assignment module 124 allocates network resources to the terminal device 10 according to the device information and the information of the network resources. For example, the packet pre-processing module 122 instructs the resource assignment module 124 to assign an IPv6 address "2001: 4200: 1000: 1000: 1000: 1000: 1000: 101.101.101.101" to a DUID of "AA-BB-AA-CC- AA-DD-AA-EE-AA-FF-AA-FF-AA-FF "terminal device 10. Based on this, the network administrator can know directly that the two IP addresses correspond to the same terminal device 10 through the IPv6 address and the IPv4 address.

In another embodiment of the present disclosure, in step S205, the pre-packet processing module 122 may also determine that the suffix of the IPv6 address allocated to the terminal device 10 is the MAC address of the terminal device 10, that is, "AA: BB: CC : AA: BB: CC ". The assigned IPv6 address is, for example, "2001: 4200: 1000: 1000: 1000: AA: BB: CC: AA: BB: CC". When IPv6 is allocated using a MAC address, the packet pre-processing module 122 can configure network resources according to the device information provided by the intercepted packet without using a resource allocation table. The network manager can directly find the corresponding terminal device 10 through the IPv6 address, and knows that the assigned IPv6 address and the IPv4 address of the terminal device 10 are the same according to the IPv4 address of the terminal device 10 Terminal 装置 10。 The terminal device 10.

In another embodiment of the present disclosure, in step S205, the pre-packet processing module 122 may further determine that the suffix of the IPv6 address allocated to the terminal device 10 is a mixture of the MAC address of the terminal device 10 and the IPv4 address, for example, : "2001: 4200: 1000: AA: BB: CC: AA: BB: CC: 101.101.101.101".

FIG. 3 is a pre-processing flowchart of a network resource allocation method according to an embodiment of the disclosure. Please refer to FIG. 1 and FIG. 3 at the same time. In this embodiment, a pre-processing module 126 is more selectively provided. Before the network resource allocation server 100 is fully operational, the pre-processing module 126 first performs packet detection, and in step S301, initiates an address query request to the terminal device 10 through the Address Resolution Protocol (ARP). To find the IPv4 address of the terminal device 10 connected to the network resource allocation server 100 and its corresponding MAC address. In step S303, the pre-processing module 126 can record the IPv4 address of the terminal device 10 and its corresponding MAC address in the resource allocation table for subsequent packet pre-processing module 122 to find and use.

In addition, if the packet pre-processing module 122 does not find the MAC address and IPv4 address corresponding to the intercepted packet when searching the resource allocation table, the pre-processing module 126 also updates the resource allocation table through the address resolution protocol.

In summary, the network resource allocation server and network resource allocation method provided in this disclosure will intercept the resource allocation request packet sent by the terminal device, and configure the network resources according to the device information, so that the same terminal device may Use related network resources in a network environment to improve the convenience of network management.

Although the present disclosure has been disclosed above by way of example, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The scope of protection of this disclosure shall be determined by the scope of the attached patent application.

10‧‧‧Terminal device

100‧‧‧ Network Resource Allocation Server

110‧‧‧ communication unit

120‧‧‧Storage unit

122‧‧‧packet pre-processing module

124‧‧‧Resource Assignment Module

126‧‧‧Pretreatment module

130‧‧‧processing unit

Steps of S201 ~ S207‧‧‧Network Resource Allocation Method

S301 ~ S303‧ preprocessing steps of network resource allocation method

FIG. 1 is a structural diagram of a network resource allocation server according to an embodiment of the disclosure. FIG. 2 is a flowchart of a network resource allocation method according to an embodiment of the disclosure. FIG. 3 is a flowchart of preprocessing steps of a network resource allocation method according to an embodiment of the disclosure.

Claims (10)

A network resource allocation server is used to allocate network resources to a terminal device. The network resource allocation server includes: a communication unit that receives a resource allocation request packet from the terminal device; a storage unit that stores multiple modules A processing unit, coupled to the communication unit and the storage unit, and accessing and executing the modules recorded by the storage unit, the modules including: a packet pre-processing module, received at the communication unit After the resource allocation request packet is received from the terminal device and before the resource allocation request packet is disassembled, the resource allocation request packet is retrieved to obtain device information of the terminal device, and the device information corresponding to the terminal device is determined according to the device information. The network resource; and a resource assignment module, which allocates the network resource to the terminal device according to the device information and the information of the network resource determined by the packet preprocessing module. The network resource allocation server according to item 1 of the scope of patent application, wherein the storage unit stores a resource allocation table and a preprocessing module, and the preprocessing module initiates an address query request to the terminal device to obtain the terminal The device information of the device, and the device information of the terminal device is recorded in the resource allocation table. The network resource allocation server according to item 2 of the scope of patent application, wherein the device information is a dynamic host setting protocol unique identifier, a media access control address, an Internet Protocol address version 4 or the above three. The combination. The network resource allocation server according to item 1 of the scope of the patent application, wherein the packet preprocessing module determines that the network resource corresponding to the terminal device is the Internet Protocol address version 6 (Internet Protocol version 6, IPv6), and the suffix of version 6 of the Internet protocol address is version 4 of the Internet protocol address, the media access control address, or a combination of the two. The network resource allocation server according to item 1 of the scope of patent application, wherein the packet pre-processing module determines the resource allocation table corresponding to the network resource of the terminal device according to the device information, and the packet pre-processing module searches the resource allocation table To obtain the fourth version of the Internet Protocol address corresponding to the terminal device, and determine the network resource corresponding to the terminal device according to the fourth version of the Internet Protocol address of the terminal device. A network resource allocation method is used for allocating network resources to a terminal device. The network resource allocation method includes: receiving a resource allocation request packet from a terminal device; before the resource allocation request packet is disassembled, retrieving from the resource allocation request packet. The resource allocation request packet of the terminal device is used to obtain the device information of the terminal device; the network resources corresponding to the terminal device are determined according to the device information; and the network resources are allocated to the device information and the network resource information according to the device information The terminal device. According to the network resource allocation method described in item 6 of the scope of patent application, before the step of retrieving the resource allocation request packet from the terminal device to obtain the device information of the terminal device, the method further includes: initiating an address inquiry request To the terminal device; and recording the device information in a resource allocation table. The method for allocating network resources as described in item 7 of the scope of the patent application, wherein the device information is a unique identifier of a dynamic host setting protocol, a media access control address, an Internet Protocol address version 4 or the above three. combination. The method for allocating network resources according to item 6 of the scope of patent application, wherein the network resource is Internet Protocol version 6 (IPv6), and the Internet protocol address is 6 The version suffix is version 4 of the Internet Protocol address, the media access control address, or a combination of the two. According to the method for assigning network resources according to item 6 of the scope of patent application, the step of determining the network resources corresponding to the terminal device according to the device information further includes: searching a resource allocation table to obtain the Internet corresponding to the terminal device The fourth version of the protocol address is determined according to the fourth version of the internet protocol address of the terminal device.