TW201404102A - System and method for dispensing IPv6 prefixes based on home network device and implementing QoS control and traffic division - Google Patents

Abstract

The present invention provides a system and method for dispensing the prefixes of IPv6 (Internet Protocol version 6) based on different home network devices and implementing the QoS (Quality of Service) control and the traffic division, which employs the IPv6 Router Solicitation (RS) and the Router Advertisement (RA) to dispense the prefixes of IPv6 in a stateless manner. Because the RS/RA has a mechanism of expanded option, the present invention adds an option of device type, so that different homework devices can transmit the RS with the device type option to the home gateway based on the belonged device category, which will dispense different IPv6 prefixes to different types of home network devices based on the received RS in a RA manner, and attach with different traffic types on the header according to different IPv6 prefixes. After receiving packets, the router at ISP (Internet Service Provider) control center can implement the automatic QoS control and the traffic division based on different traffic types.

Description

System and method for distributing IPv6 first code according to home network equipment and doing QoS control and traffic offloading

The present invention relates to a system and method for QoS control and traffic offloading, and more particularly to a system and method for distributing IPv6 first code according to a home network device and performing QoS control and traffic offloading.

With the increasing popularity of the Internet, the number of home devices that can be connected to the Internet is increasing, and the IPv4 (Internet Protocol version 4, Internet Protocol version 4) address is no longer available. Home network devices at the back end of home gateways currently use a private IP address, which causes users to connect to other homes, such as offices, when connecting to home network devices. The special design of the software can be connected smoothly. IPv6 has enough address space to allow all network devices to have a unique Public Address.

Home network devices are also becoming more diverse. For example, home network devices that provide voice services, voice traffic is very sensitive to delay in terms of voice. At present, the home gateway distributes the IPv6 address to the home network device at the back end, and cannot distinguish between different home network devices, so there is no specific distribution rule. When the ISP router receives the packet forwarded by the home gateway, it cannot determine the type of device that sent the packet, and naturally cannot classify the traffic and provide QoS control.

It can be seen that there are still many shortcomings in the above-mentioned methods of use, which is not a good design, but needs to be improved.

In view of the shortcomings derived from the above-mentioned conventional methods, the inventor of the present invention has improved and innovated, and after years of painstaking research, he finally succeeded in researching and developing this piece according to the household. The network device distributes the IPv6 first code and performs QoS control and traffic offloading.

The purpose of the present invention is to add an Option-Device Type Option to the existing IPv6 stateless allocating IPv6 prefix (Prefix). This new first code is used to distinguish different home network devices, so that automatic QoS control and traffic offloading can be performed according to different traffic categories.

The system and method for distributing the IPv6 first code and performing QoS control and traffic offloading according to the home network device, which uses the IPv6 RS/RA to extend the Option mechanism, and add an Option-Device Type Option. A different number than a different home network device. Different home network devices send an RS with a Device Type Option to the home gateway according to the device classification, and the home gateway distributes different IPv6 first codes according to the received RS. Give different kinds of home network equipment. The home gateway then attaches different traffic categories to the IPv6 header according to different IPv6 first codes. After receiving the packet, the router of the ISP control center performs automatic QoS control and traffic offload according to different traffic categories.

In summary, the present invention is summarized as follows: a network protocol (Internet Protocol version 6, IPv6) first code (Prefix) is distributed according to a home network device and a quality of service (QoS) is performed. A system for controlling traffic and traffic diversion, including: a plurality of home network devices, which send a Router Solicitation (RS) message with a Device Type Option; a gateway device that transmits A local area network (LAN) network is connected to the plurality of home network devices to receive the RS message with the Device Type Option sent by the plurality of home network devices, and the corresponding response has a Device Type Option and Prefix Information Option router Declaring a message (Router Advertisement, RA) message, and transmitting a 64-bit IPv6 first code to the plurality of home network devices through the LAN network, and the plurality of home network devices receive the IPv6 first code and then use the The IPv6 first code and the network card ID of the plurality of home network devices themselves constitute a public IPv6 address, and when forwarding the plurality of home network device packets, determining the IPv6 address according to the packet A plurality of types of home network devices are forwarded to an ISP router after adding a traffic category to the IPv6 header; and the ISP router communicates with the home gateway through a Wide Area Network (WAN) ( Home Gateway is connected and provides QoS control and traffic offloading.

In the present invention, the Device Type Option is an IPv6 RA/RS extension option (Option), and the total length is 64 bits, including: Type field, the length is 8 bits, and the value is 10; Length (length) field, length is 8 bits, the value is 8; and Device ID field, the length is 48 bits, the value is 0 to 15, and only the rightmost 1st To the 4th bit, the remaining 5th to 48th bits are set to 0.

In the present invention, wherein the value of the Device ID indicates the classification of the plurality of home network devices, the plurality of home network devices are differently different from the Device ID.

A method for distributing IPv6 first code and performing QoS control and traffic offloading according to a home network device, including the following steps: a gateway uses a Dynamic Host Configuration Protocol (DHCP) protocol to connect to the Internet The DHCP server of the Internet Service Provider (ISP) obtains a 60-bit IPv6 first code; a plurality of home network devices send an RS message with a Device Type Option to the home gateway; the home gateway After receiving the RS message, replying to the corresponding RA message with the Device Type Option and the Prefix Information Option, thereby allocating the 64-bit IPv6 first code to the plurality of a home network device; the plurality of home network devices match the 64-bit IPv6 first code received by the 64-bit network card ID of the plurality of home network devices to form a 128-bit network The public IPv6 address is transmitted, and the packet is sent by the IPv6 address; when the home gateway forwards the packet, the negative complex number is determined according to the 61st to 64th bits of the IPv6 address of the packet. The type of home network device, and the value of the traffic class in the IPv6 header; and when the ISP router receives the packet forwarded by the home gateway, the IPv6 header according to the packet The value of the category field automatically performs QoS control and traffic offloading.

In the present invention, the Device Type Option is an IPv6 RA/RS extended Option, and the total length is 64 bits, including: a Type field, a length of 8 bits, a value of 10; a Length field, a length It is 8 bits, the value is 8; and the field of Device ID, the length is 48 bits, the value is 0 to 15, and only the rightmost 1st to 4th bits are used, and the remaining 5th The 48th bit is set to 0.

In the present invention, the method in which the home gateway is configured with a length of 64 bits of the IPv6 first code is the IPv6 first code (60 bits) obtained by the ISP terminal plus the Device ID (4 bits) ).

In the present invention, the value of the IPv6 header traffic class is equal to the value of the Device ID.

In the present invention, the routing table of the ISP router adds a traffic category field to determine the routing condition.

The system and method for distributing IPv6 first code according to the home network device and performing QoS control and traffic offloading according to the present invention have the following advantages when compared with other conventional technologies:

1. The method for allocating IPv6 first code (Prefix) by using IPv6 RS/RA, newly added Add a Device Type Option. This option can be used to distinguish between home network devices. The transmission range of the RS/RA packet is limited to the back-end network (ie, the LAN side) of the home gateway, and the home network equipment is classified by the IPv6 first code without increasing the traffic of the entire Internet. .

2. The present invention uses the traffic category field to paste the packets sent to the WAN (Wide Area Network) end with the classified tags. According to the label, the ISP router performs traffic shunting and QoS control.

The detailed description of the present invention is intended to be illustrative of a preferred embodiment of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

To sum up, this case is not only innovative in terms of technical thinking, but also has many of the above-mentioned functions that are not in the traditional methods of the past. It has fully complied with the statutory invention patent requirements of novelty and progressiveness, and applied for it according to law. Approved this invention patent application, in order to invent invention, to the sense of virtue.

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present invention will be further described with reference to the accompanying drawings. Referring to FIG. 1, it is a system architecture diagram of a system and method for distributing IPv6 first code and performing QoS control and traffic offload according to the home network device of the present invention. The home network device 101 is connected to the LAN network 102 of the home gateway 103. The home gateway 103 is connected to the ISP router 105 via the WAN network 104 and obtains the IPv6 first code from the DHCP server through the DHCP (Dynamic Host Configuration Protocol) protocol. The first code length ranges from 48 bits (bit). ) to 60 bits. The length of the first code can be requested by the user to the ISP or determined by the ISP. The home gateway 103 will automatically generate a mid-range first code according to several LAN (Local Area Network) networks 102 at the back end. The home network device 101 transmits an RS to the home gateway 103. The RS must have a Device Type Option. The total length of the Device Type Option is 64 bits, where the Type field value is 10, the length is 8 bits, the Length field value is 8, and the length is 8 bits. For the device ID number, see Figure 2. The value is 0 to 15, the Device ID is 48 bits long, only the rightmost 1st to 4th bits are used, and the remaining 5th to 48th bits are all set to 0. The message format of RS is shown in the attached table 1 of the attached file. Take the network camera as an example. The RS sent must have a Device Type Option and the Device ID must be 2. After receiving the RS, the home gateway 103 responds to the corresponding RA with the Device Type Option and the Prefix Information Option according to the Device ID. Please refer to Appendix 2 of the attached message format for the RA. According to the definition of RFC 6204, the home gateway 103 must allocate a first code having a first code length of 64 bits to the home network device 101 at the back end, so the home gateway 103 uses the 61st to 64th bits. The first code of the different home network devices 101 is distinguished, as shown in FIG. The encoding method of the first code, the formula is: the first code (60 bits) obtained from the ISP end + Device ID (4 bits)

The first code obtained from the ISP side is 60 bits long, and the Device ID is 4 bits. The home gateway 103 automatically generates a first code of length 64 bits according to the above formula, and distributes it to the corresponding home network device 101 in RA mode, and the home network device 101 is matched with its own 64-bit network. The card ID constitutes a 128-bit public IPv6 address, as shown in FIG. Webcam For example, when the first code obtained by the home gateway 103 from the ISP router 105 is 3ffe:501:ffff:1110::/60, the first code assigned by the home gateway 103 to the network camera is 3ffe:501:ffff. :1112::/64.

The packet of the home network device 101 is forwarded to the ISP router 105 by the home gateway 103. Since the home network device 101 has a public and unique IPv6 network address, it does not need to pass through the home gateway 103. After NAT conversion. The home gateway 103 determines the type of home network device that the packet is sent according to the 61st to 64th bits of the source address of the packet, and adds the IPv6 header to the message. The value of the category. The traffic class value needs to be equal to the value of Device ID, see Figure 2.

The ISP's network administrator builds a routing table on the router side based on its own network management and design requirements. The routing table must contain the traffic class, router interface ID, and priority. When the traffic class value is 1, it has the highest priority. When the ISP router 105 receives the packet forwarded by the home gateway 103, it first checks the traffic category field of the packet. Taking the Internet phone as an example, when the ISP router 105 checks that the traffic class value is 1, it determines that the packet is sent by the network phone, and the packet transmitted by the network phone is a voice packet, which has high sensitivity to delay. Therefore, such packets have a high priority and need to be transmitted preferentially. Taking the Internet TV as an example, when the ISP router 105 checks that the traffic class value is 3, it is determined that the packet is sent by the network television and needs to be transmitted to the dedicated network 107. The ISP router 105 performs QoS control and traffic offloading through the traffic category field.

Please refer to FIG. 4, which is an example of a routing table of a system and method for distributing IPv6 first code and performing QoS control and traffic offloading according to the home network device of the present invention. As shown in the figure, the ISP router 105 has three network interfaces as an example. The interface ID 2 is connected to the WAN terminal 104, the interface ID 0 is connected to the Internet 106, and the interface ID 1 is connected to the IP TV dedicated network 107. Highest priority, number The higher the word, the lower the priority and the lower the number. The traffic class value is 1 and the priority value is 10. The traffic class value is 3 and the packet is forwarded to the dedicated network 107.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; the modifications and equivalents of the present invention are intended to be included in the scope of the present invention without departing from the spirit and scope of the invention. Within the scope of protection.

101‧‧‧Home network equipment

102‧‧‧LAN network

103‧‧‧Home Gateway

104‧‧‧WAN network

105‧‧‧ISP router

106‧‧‧Internet

107‧‧‧Exclusive network

1 is a system architecture diagram of a system and method for distributing IPv6 first code according to the present invention and performing QoS control and traffic offloading according to the present invention; FIG. 2 is a distribution of IPv6 first code according to the present invention according to the present invention. And the number of the Device ID of the system and method for QoS control and traffic offloading; FIG. 3 is a system and method for distributing IPv6 first code according to the home network device and doing QoS control and traffic offloading according to the present invention. The IPv6 address composition method of the home network device, wherein the 61st to 64th bits are used to distinguish different home network devices; and FIG. 4 is the distribution of the IPv6 first code and QoS control according to the home network device of the present invention. An example of a routing table for systems and methods for pipe and traffic diversion.

101‧‧‧Home network equipment

102‧‧‧LAN network

103‧‧‧Home Gateway

104‧‧‧WAN network

105‧‧‧ISP router

106‧‧‧Internet

107‧‧‧Exclusive network

Claims (8)

A system for distributing Internet Protocol version 6, IPv6 first code (Prefix) according to a home network device, and performing bandwidth of service (QoS) control and traffic offloading, Including: a plurality of home network devices, which send Router Solicitation (RS) messages with Device Type Option; a gateway device that uses a Local Area Network (LAN) The network is connected to the plurality of home network devices to receive the RS message with the Device Type Option sent by the plurality of home network devices, and replies with a corresponding Device Type Option and a first code message option (Prefix Information) Option) Router Advertisement (RA) message, and transmitting a 64-bit IPv6 first code to the plurality of home network devices through the LAN network, the plurality of home network devices receiving the IPv6 first code And using the IPv6 first code and the network card ID of the plurality of home network devices to form a public IPv6 address, and when forwarding the plurality of home network device packets, Determining the type of the plurality of home network devices according to the IPv6 address of the packet, adding a traffic class to the IPv6 header, and then forwarding the packet to an ISP router; and the ISP router is through the wide area network (Wide Area) The Network, WAN) is connected to the Home Gateway and provides QoS control and traffic offloading. For example, in the system of claim 1, the system for distributing IPv6 first code according to the home network device and performing QoS control and traffic offloading, wherein the Device Type Option is an IPv6 RA/RS extension option (Option), the total length is 64 bits, including: a. Type field, length 8 bits, value 10; b. Length field, length 8 bits, value 8; and c. Device ID column The bit has a length of 48 bits and its value is 0 to 15, and only the rightmost 1st to 4th bits are used, and the remaining 5th to 48th bits are set to 0. For example, in the system of claim 2, the system distributes the IPv6 first code according to the home network device and performs QoS control and traffic offloading, wherein the value of the Device ID indicates the classification of the plurality of home network devices, so different The plurality of home network devices respectively use different Device IDs. A method for distributing IPv6 first code according to a home network device and performing QoS control and traffic offloading includes the following steps: a. Using a gateway to communicate with the Internet through a Dynamic Host Configuration Protocol (DHCP) protocol The DHCP server of the Internet Service Provider (ISP) obtains the IPv6 first code of 60 bits; b. the plurality of home network devices send the RS message with the Device Type Option to the home gateway; c After receiving the RS message, the home gateway replies with an RA message corresponding to the Device Type Option and the Prefix Information Option, thereby allocating the 64-bit IPv6 first code to the plurality of home network devices. ; d. The plurality of home network devices match the received IPv6 first code of 64 bits with the 64-bit network card ID of the plurality of home network devices to form a 128-bit network Exposing an IPv6 address and transmitting the packet with the IPv6 address; e. When the home gateway forwards the packet, the type of the negative plurality of home network devices is determined according to the 61st to 64th bits of the IPv6 address of the packet, and is added to the IPv6 header. The value of the traffic class; and f. When the ISP router receives the packet forwarded by the home gateway, the QoS control and the traffic are automatically performed according to the value of the traffic class field of the IPv6 header of the packet. Diversion. For example, in the method of claim 4, the method for distributing IPv6 first code according to the home network device and performing QoS control and traffic offloading, wherein the Device Type Option is an IPv6 RA/RS extended Option, and the total length is 64 bits. Yuan, including: a. Type field, length is 8 bits, the value is 10; b. Length field, length is 8 bits, the value is 8; and c. Device ID field, length It is 48 bits, its value is 0 to 15, and only the rightmost 1st to 4th bits are used, and the remaining 5th to 48th bits are set to 0. The method for distributing an IPv6 first code according to a household network device according to claim 5, and performing QoS control and traffic offloading, wherein the home gateway is configured with a 64-bit length of the IPv6 first code method. Add the Device ID (4 bits) to the IPv6 first code (60 bits) obtained by the ISP. For example, in the method of claim 4, the method for distributing the IPv6 first code according to the home network device and performing QoS control and traffic offloading, wherein the value of the IPv6 header traffic category is equal to the value of the Device ID. Distribute IPv6 first code and QoS according to home network equipment as described in item 4 of the patent application scope. A method of controlling traffic and traffic shunting, wherein a routing class of the ISP router adds a traffic category field to determine the routing condition.