WO2013181991A1

WO2013181991A1 - Message processing method and system and routing device

Info

Publication number: WO2013181991A1
Application number: PCT/CN2013/076058
Authority: WO
Inventors: 叶宇煦; 查敏
Original assignee: 华为技术有限公司
Priority date: 2012-06-05
Filing date: 2013-05-22
Publication date: 2013-12-12
Also published as: CN108322400B; CN103457856A; CN108322400A; CN103457856B

Abstract

Provided are a message processing method and system and a routing device. A terminal communicates with a destination device by means of a first routing device via an IPv6 network and also by means of a second routing device. Since all IPv4 messages initiated by the terminal need to be sent to the destination device through the first routing device and the second routing device, a star communication mode is realized in an application scenario of MAP technology, which can improve the capability of the second routing device (i.e. network-side device) managing user communication traffic.

Description

Message processing method, system and routing device

This application is submitted to the Chinese Patent Office on June 5, 2012, and the application number is

201210183101.8, the invention name is "4艮文 processing method, system and routing device

The priority of the Chinese patent application is incorporated herein by reference.

BACKGROUND OF THE INVENTION The large-scale application of Internet technology has greatly increased the demand for Internet Protocol (IP) addresses. IP version 6 (IPv6) is a new generation network protocol that uses a 128-bit address format and has a large address space to completely solve the problem of insufficient IP version 4 (IPv4) addresses. However, during the smooth migration of the Internet to IPv6, IPv4 services still need to remain continual. The Mapping of Address and Port (MAP) is a transitional technology from IPv4 to IPv6. It is mainly used in the application scenario where the access network uses pure IPv6. The main network elements of the technology application include IPv6 networks and IPv4 networks. The Border Relay (BR) and the Customer Edge Router (CE) at the boundary of the user network. The CE obtains the IPv4 address of the CE according to the IPv6 prefix assigned to the CE and the Basic Mapping Rule (BMR) delivered by the IPv6 Dynamic Host Configure Protocol for IPv6 (DHCPv6) server. IPv4 addresses can be exclusive (not shared) or shared. When the IPv4 address of the CE is a shared address, the Port Set Identifier (PSID) of the CE may be further obtained. CEs that use the same mapping rule can form a MAP domain. CEs in the same MAP domain can directly communicate with their respective IPv4 addresses and IPv6 addresses. The mapping rules can include BMR and forwarding mapping rules. Rule, FMR) and Default Mapping Rule (DMR) that provides the IPv6 address or prefix of the BR.

However, direct communication between CEs makes it impossible for network-side devices to perform management operations on these user traffic, such as: traffic control and statistics, which leads to a decline in network-side device management capabilities. SUMMARY OF THE INVENTION Aspects of the present application provide a message processing method, system, and routing device for improving the ability of a network side device to manage user traffic. An aspect of the present application provides a packet processing method, including:

The first routing device receives the IPv4 packet, and the IPv4 packet includes the destination IPv4 address. The first routing device encapsulates or translates the IPv4 packet into an IPv6 packet by using the IPv6 address or the prefix of the second routing device. Sending to the second routing device, so that the second routing device updates the source IPv4 address carried by the IPv6 packet according to the source IPv6 address of the first BMR and the IPv6 packet, and uses the first BMR. The routing information corresponding to the destination IPv4 address is matched, and the content of the IPv4 packet is forwarded according to the routing information. Another aspect of the present application provides a packet processing method, including:

The second routing device receives the IPv6 packet sent by the first routing device, where the IPv6 packet is the IPv4 address or the prefix of the second routing device after the first routing device receives the IPv4 packet, and the IPv4 packet is used. The packet is encapsulated or translated, and the IPv4 packet includes a destination IPv4 address.

The second routing device updates the source IPv4 address carried by the IPv6 packet according to the source IPv6 address of the first BMR and the IPv6 packet, and matches the route corresponding to the destination IPv4 address by using the first BMR. Information

The second routing device forwards the content of the IPv4 packet according to the routing information. Another aspect of the present application provides a routing device, including:

a first receiver, configured to receive an IPv4 packet, where the IPv4 packet includes a destination IPv4 address;

a processor, configured to encapsulate or translate the IPv4 packet into an IPv6 packet by using an IPv6 address or a prefix of the second routing device;

a transmitter, configured to send the IPv6 packet to the second routing device, so that the second routing device updates the IPv6 according to a source IPv6 address of the first BMR and the IPv6 packet The source IPv4 address carried in the packet, and the routing information corresponding to the destination IPv4 address is matched by using the first BMR, and the content of the IPv4 packet is forwarded according to the routing information. In another aspect of the present application, a routing device is provided, including: a receiver, configured to receive an IPv6 packet sent by a first routing device, where the IPv6 packet is used by the first routing device after receiving an IPv4 packet The IPv6 address or the prefix of the routing device, the IPv4 packet is encapsulated or translated, and the IPv4 packet includes a destination IPv4 address. The processor is configured to use the source of the first BMR and the IPv6 packet. An IPv6 address, the source IPv4 address carried in the IPv6 packet is updated, and the first BMR is used to match the routing information corresponding to the destination IPv4 address. The sender is configured to forward the IPv4 packet according to the routing information. The content of the text. Another aspect of the present application provides a message processing system including the routing device of the above two aspects.

According to the foregoing technical solution, the terminal communicates with the destination device through the IPv6 network and through the second routing device by using the first routing device, and all the IPv4 packets initiated by the terminal are required to pass the first routing device and the second route. The device is sent to the destination device. Therefore, the star communication mode is implemented in the application scenario of the MAP technology, which can improve the management capability of the second routing device, that is, the network side device, to the user communication traffic. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to the drawings without any inventive labor.

1 is a schematic flowchart of a packet processing method according to an embodiment of the present disclosure; FIG. 2 is a schematic diagram of an application scenario of a MAP technology used in the embodiment corresponding to FIG. 1; A schematic diagram of a mapping relationship between two BMRs; 4 is a schematic diagram of a mapping relationship of a first BMR in the embodiment corresponding to FIG. 1. FIG. 5 is a schematic diagram of another mapping relationship of a first BMR in the embodiment corresponding to FIG. 1. FIG. 6 is a diagram corresponding to the embodiment in FIG. FIG. 7 is a schematic diagram of another mapping relationship of the second BMR in the embodiment corresponding to FIG. 1; FIG. 8 is a schematic flowchart of a packet processing method according to another embodiment of the present application; FIG. 10 is a schematic structural diagram of a routing device according to another embodiment of the present disclosure; FIG. 11 is a schematic structural diagram of a routing device according to another embodiment of the present disclosure; 12 is a schematic structural diagram of a routing device provided by another embodiment of the present application;

FIG. 13 is a schematic structural diagram of a routing device according to another embodiment of the present disclosure. The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. The embodiments are part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The technical solution of the present application can be applied to an application scenario using MAP technology (see draft-mdt-softwire-mapping-address-and-port-03). The first routing device may be a Customer Edge Router (CE), a Customer Premise Equipment (CPE), or a user gateway device located at a user network boundary.

a network element such as a Residential Gateway; the second routing device may be a Border Relay (BR) or a port range router located between the IPv6 network and the IPv4 network.

(Port-Range Router, PRR) and other network elements.

FIG. 1 is a schematic flowchart of a packet processing method according to an embodiment of the present disclosure. FIG. 2 is a schematic diagram of an application scenario of a MAP technology used in the corresponding embodiment of FIG. 1 , as shown in FIG. 1 and FIG. 2 . 101. The first routing device receives an IPv4 packet, where the IPv4 packet includes a destination IPv4 address.

The first routing device uses the IPv6 address or the prefix of the second routing device to encapsulate or translate the IPv4 packet into an IPv6 packet, and sends the IPv6 packet to the second routing device, so that the second routing device is configured according to the second routing device. The source B6 address of the first BMR and the IPv6 packet, the source IPv4 address carried in the IPv6 file is updated, and the routing information corresponding to the destination IPv4 address is matched by using the first BMR, and the routing information is forwarded according to the routing information. The content of the IPv4 message. Specifically, the first routing device may specifically encapsulate or translate the IPv4 packet into an IPv6 packet, that is, a network address translation (NAT) 44 and a MAP. In the NAT 44 module, the private network IPv4 address and port in the received IPv4 packet are converted into a public network IPv4 address; in the MAP module, the IPv4 packet processed by the NAT44 module is encapsulated or Translated into IPv6 messages.

It is to be understood that the first routing device may specifically encapsulate or translate the IPv4 packet into an IPv6 packet by using a function module, which is not limited in this embodiment. The IPv6 packet may carry the source IPv4 address (that is, the public network IPv4 address) in one of the two modes: one mode is carried in the packet header, and the packet header is carried in the IPv4 packet; For the translation, it is carried by the field in the interface identifier (interface ID) of the source IPv6 address of the IPv6 packet.

In this embodiment, the terminal communicates with the destination device through the IPv6 network and through the second routing device by using the first routing device, and all the IPv4 packets initiated by the terminal are required to pass through the first routing device and the second routing device. The device is sent to the destination device. Therefore, the star communication mode is implemented in the application scenario of the MAP technology, which can improve the management capability of the second routing device, that is, the network side device, to the user communication traffic.

Optionally, in an optional implementation manner of this embodiment, in a scenario in which the first routing device shares the public network IPv4 address, before the 102, the first routing device receives the IPv6 enabled dynamic host. The first routing device is not delivered by the PSID of the first routing device and the IPv6 address or the prefix of the second routing device delivered by the server. The public network IPv4 address of the first routing device cannot be obtained according to the BMR. Correspondingly, in 102, due to the first route The device cannot use the BMR to match the routing information corresponding to the destination IPv4 address, and the first routing device may encapsulate or translate the IPv4 packet into an IPv6 packet by using an IPv6 address or a prefix of the second routing device. Send to the second routing device. In addition, since the first routing device cannot obtain the public network IPv4 address, the source IPv4 address carried by the IPv6 packet sent by the first routing device may be a specific IPv4 address, for example, applying at the IANA. The specific unicast IPv4 address registered, or similar to 192.0.0.2, or all 0s, or all 1s used to identify B4 in DS-lite technology.

The first routing device is a CE located at the boundary of the user network, and the second routing device is a BR located between the IPv6 network and the IPv4 network. The parameters that the DHCPV6 server sends to the CE include the DMR for accessing the BR and the PSID of the CE. The DMR includes an IPv6 address or prefix of the BR. The CE uses the DMR to encapsulate or translate the received IPv4 packets into IPv6 packets and send them to the BR. Since the complete BMR, the first BMR, is retained in the BR, as shown in Figure 4. Therefore, the BR may obtain the public network IPv4 address of the CE according to the source IPv6 address of the first BMR and the IPv6 packet from the CE, and update the source IPv4 address carried by the IPv6 packet by using the public network IPv4 address. Then, the BR can use the first BMR to match the routing information corresponding to the destination IPv4 address, and forward the content of the IPv4 packet according to the routing information. For example, if the destination IPv4 address carried in the IPv6 packet received by the BR matches the rule IPv4 prefix in the first BMR of a MAP domain in the BR, the destination device is located in the BR. In the MAP domain, the BR will use the IPv6 packet to perform the backhaul processing on the content of the IPv4 text, that is, the content of the IPv4 text is sent to another CE through the BR; if the IPv6 packet received by the BR is carried The destination IPv4 address does not match the rule IPv4 prefix in the first BMR of any MAP domain in the BR, and the BR forwards the content of the IPv4 packet carried in the IPv6 packet to the IPv4 public network.

The terminal communicates with the destination device through the CE through the IPv6 network and through the BR. Since all the IPv4 packets initiated by the terminal are sent to the destination device through the CE and the BR, the star communication mode is implemented in the application scenario of the MAP technology. Improve BR's ability to manage user traffic.

Optionally, in an optional implementation manner of this embodiment, in a scenario where different first routing devices share a public network IPv4 address, before 102, the first routing device receives a dynamic host configuration protocol (Dynamic Host Configure) Protocol for IPv6, DHCPv6) server The incomplete BMR (ie, the second BMR) and the DMR are delivered, that is, the server does not deliver the complete BMR (ie, the first BMR), so that the first routing device cannot obtain the first BMR according to the second BMR. The public network IPv4 address of a routing device. The second BMR provides only length information of the PSID. Optionally, the second BMR may further include a first embedded address (EA) bit length (EA bits), where the first EA bit length is used to indicate that the first route is allocated to the first route. The length of the PSID in the IPv6 prefix of the device. The DMR is used to access the second routing device, that is, the DMR includes the IPv6 address of the second routing device or its IPv6 prefix. That is, before 102, the first routing device cannot use the second BMR to match the routing information corresponding to the destination IPv4 address. Correspondingly, in the 102, because the first routing device cannot use the incomplete BMR (ie, the second BMR) to match the routing information corresponding to the destination IPv4 address, the first routing device will utilize the DMR, The IPv4 packet is encapsulated or translated into an IPv6 packet and sent to the second routing device. In addition, the source IPv4 address carried by the first routing device may be a specific IPv4 address, because the first routing device cannot obtain the public network IPv4 address of the first routing device. For example, a specific unicast IPv4 address applied for registration by the Internet Assigned Numbers Authority (IANA), or 192.0.0.2 used to identify B4 in a similar dual stack lite (DS-lite) technology, Or all 0 or all 1 and so on. The IPv6 prefix of the first routing device is allocated by the operator to the first routing device, for example, the DHCPv6 server delegates the first routing device by using a DHCPv6 Prefix Delegation (DHCPv6-PD) The IPv6 prefix, or the IPv6 prefix assigned by the Provider Edge Router to the first routing device by means of Stateless Address Auto-Configuration (SLAAC).

The first routing device is a CE located at the boundary of the user network, and the second routing device is a BR located between the IPv6 network and the IPv4 network. The DHCPv6 server delivers the DMR for accessing the BR and the incomplete BMR, that is, the second BMR, as shown in FIG. 3, wherein the second BMR may further include the first EA. Bit length, the first EA bit length is used to indicate the length of the PSID in the IPv6 prefix allocated to the CE. The CE uses the DMR to encapsulate or translate the received IPv4 packets into IPv6 packets. By The complete BMR, the first BMR, is retained in the BR, as shown in Figure 4. Therefore, the BR may obtain the public network IPv4 address of the CE according to the source IPv6 address of the first BMR and the IPv6 packet from the CE, and update the source IPv4 address carried by the IPv6 packet by using the public network IPv4 address. Then, the BR can use the first BMR to match the routing information corresponding to the destination IPv4 address, and forward the content of the IPv4 packet according to the routing information. For example, if the destination IPv4 address carried in the IPv6 packet received by the BR matches the rule IPv4 prefix in the first BMR of a MAP domain in the BR, the destination device is located in the BR. In the MAP domain, the BR will use the IPv6 packet to perform the backhaul processing on the content of the IPv4 packet, that is, the content of the IPv4 packet is sent to another CE through the BR; if the IPv6 packet received by the BR is carried The destination IPv4 address does not match the rule IPv4 prefix in the first BMR of any MAP domain in the BR, and the BR forwards the content of the IPv4 packet carried in the IPv6 packet to the IPv4 public network.

Optionally, in an optional implementation manner of this embodiment, in a scenario where different first routing devices do not share a public network IPv4 address, before the 102, the first routing device may further receive the DHCPV6 server only. The DMR, that is, the server only delivers the DMR, and does not deliver the BMR, so that the first routing device cannot obtain the public network IPv4 prefix or address of the first routing device according to the BMR. The DMR is used to access the second routing device, that is, the DMR includes the IPv6 address of the second routing device or its IPv6 prefix. Correspondingly, in the case that the first routing device cannot use the BMR to match the routing information corresponding to the destination IPv4 address, the first routing device may use the DMR to encapsulate the IPv4 packet or The translated IPv6 packet is sent to the second routing device. In addition, since the first routing device cannot obtain the public network IPv4 address, the source IPv4 address carried by the IPv6 packet sent by the first routing device may be a specific IPv4 address, for example, applying at the IANA. Registered specific unicast IPv4 address, or similar to 192.0.0.2 used to identify B4 in DS-lite technology, or all 0 or all 1s.

The first routing device is the CE located at the boundary of the user network, and the second routing device is located at the IPv6. Take the BR between the network and the IPv4 network as an example. The DHCPv6 server delivers the DMR for accessing the BR and does not deliver the BMR. The CE uses the DMR to encapsulate or translate the received IPv4 packets into IPv6 packets and send them to the BR. Since the complete BMR, the first BMR, is retained in the BR, as shown in FIG. Therefore, the BR can obtain the public network IPv4 prefix or address of the CE according to the source B6 address of the first BMR and the IPv6 packet from the CE. If the BR obtains the public network IPv4 prefix of the CE, the BR may select an address in the network segment indicated by the IPv4 prefix of the public network according to a preset rule, for example, the available first address of the network segment, as The public network IPv4 address of the CE. Then, the BR can update the source IPv4 address carried by the IPv6 packet by using the obtained public network IPv4 address of the CE. Then, the BR can use the first BMR to match the location carried by the IPv6 packet. And the routing information corresponding to the destination IPv4 address, and forwarding the content of the IPv4 packet according to the routing information. For example, if the destination IPv4 address carried in the IPv6 packet received by the BR matches the rule IPv4 prefix in the first BMR of a MAP domain in the BR, the destination device is in the In the MAP domain, the BR will use the IPv6 packet to forward the content of the IPv4 packet, that is, the content of the IPv4 packet is sent to another CE through the BR; if the IPv6 packet received by the BR is carried The destination IPv4 address does not match the rule IPv4 prefix in the first BMR of any MAP domain in the BR, and the BR forwards the content of the IPv4 packet carried in the IPv6 packet to the IPv4 public network.

Optionally, in an optional implementation manner of this embodiment, in a scenario in which the first routing device shares the public network IPv4 address, the first routing device receives the DHCPV6 server that is not completely correct. The BMR (ie, the second BMR) and the DMR, that is, the server does not deliver the completely correct BMR (ie, the first BMR), so that the first routing device cannot obtain the first routing device according to the second BMR. Public network IPv4 address. Optionally, the second BMR may further include a specific rule IPv4 prefix (for example: 10.10.10.10 / · [the length of the rule IPv4 prefix], or all 0s or all 1s, etc.) and the second EA bit length The second EA bit length is used to indicate the IPv6 prefix allocated to the first routing device. The sum of the length of the IPv4 suffix and the PSID, the IPv4 suffix being the remainder of the IPv4 address of the first routing device after removing the corresponding length of the regular IPv4 prefix. The DMR is used to access the second routing device, that is, the DMR includes the IPv6 address of the second routing device or its IPv6 prefix. That is, before 102, the first routing device cannot use the second BMR to match the routing information corresponding to the destination IPv4 address. Correspondingly, in the first routing device, the first routing device can use the routing information corresponding to the destination IPv4 address by using the incompletely correct BMR (ie, the second BMR). The DMR encapsulates or translates the IPv4 packet into an IPv6 packet and sends the packet to the second routing device. In addition, the first routing device cannot use the incompletely correct BMR (ie, the second BMR) to obtain the public network IPv4 address of the first routing device, and therefore, the IPv6 sent by the first routing device. The source IPv4 address carried in the packet may be an IPv4 address using the specific rule IPv4 prefix.

The IPv6 prefix of the first routing device is allocated by the operator to the first routing device, for example, the DHCPv6 server delegates the first routing device by using a DHCPv6 Prefix Delegation (DHCPv6-PD) The IPv6 prefix, or the IPv6 prefix assigned by the Provider Edge Router to the first routing device by means of Stateless Address Auto-Configuration (SLAAC).

The first routing device is a CE located at the boundary of the user network, and the second routing device is a BR located between the IPv6 network and the IPv4 network. The DHCPv6 server delivers the DMR for accessing the BR and the BMR that is not completely correct, that is, the second BMR, as shown in FIG. 6. The second BMR may further include a specific A regular IPv4 prefix and a second EA bit length, the second EA bit length being used to indicate a sum of an IPv4 suffix and a length of the PSID in an IPv6 prefix allocated to the CE. The CE uses the DMR to encapsulate or translate the received IPv4 packets into IPv6 packets and send them to the BR. Since the BR is the correct BMR, the first BMR, as shown in Figure 4. Therefore, the BR may obtain the public network IPv4 address of the CE according to the source IPv6 address of the first BMR and the IPv6 packet from the CE, and update the source IPv4 address carried by the IPv6 packet by the public network IPv4 address; Then, the BR may use the first BMR to match the routing information corresponding to the destination IPv4 address carried in the IPv6 packet, and forward the content of the IPv4 packet according to the routing information. If BR receives If the destination IPv4 address that is carried in the IPv6 packet is matched with the rule IPv4 prefix in the first BMR of a MAP domain in the BR, the destination device is in a certain MAP domain to which the BR belongs. The content of the IPv4 packet is forwarded by using the IPv6 packet, that is, the content of the IPv4 packet is sent to another CE through the BR; if the destination IPv4 address carried by the IPv6 packet received by the BR is The rule IPv4 prefix in the first BMR of any MAP domain in the BR cannot be matched, and the BR forwards the content of the IPv4 packet carried in the IPv6 packet to the IPv4 public network. The terminal communicates with the destination device through the CE through the IPv6 network and through the BR. Since all the IPv4 packets initiated by the terminal are sent to the destination device through the CE and the BR, the star communication mode is implemented in the application scenario of the MAP technology. Improve BR's ability to manage user traffic.

Optionally, in an optional implementation manner of this embodiment, in a scenario where different first routing devices do not share a public network IPv4 address, before the 102, the first routing device receives an incomplete delivery by the DHCPV6 server. The correct BMR (ie, the second BMR) and the DMR, that is, the server does not deliver the completely correct BMR (ie, the first BMR), so that the first routing device cannot obtain the first route according to the second BMR. The public network IPv4 prefix or address of the device. Optionally, the second BMR may further include a specific rule IPv4 prefix (for example: 10.10.10.10 / · [the length of the rule IPv4 prefix], or all 0s or all 1s, etc.) and the third EA bit length The length of the third EA bit is used to indicate the length of the IPv4 suffix in the IPv6 prefix allocated to the first routing device, and the IPv4 suffix is the IPv4 prefix or address of the first routing device. The remainder of the rule after the corresponding length of the IPv4 prefix. The DMR is used to access the second routing device, that is, the DMR includes the IPv6 address of the second routing device or its IPv6 prefix. That is, before 102, the first routing device cannot use the second BMR to match the routing information corresponding to the destination IPv4 address. Correspondingly, in the first routing device, the first routing device cannot use the incompletely correct BMR (ie, the second BMR) to match the routing information corresponding to the destination IPv4 address, and the first routing device uses the DMR. The IPv4 packet is encapsulated or translated into an IPv6 packet and sent to the second routing device. In addition, the first routing device cannot use the incomplete BMR (ie, the second BMR) to obtain the public network IPv4 prefix or address of the first routing device, and therefore, the first routing device sends the The source IPv4 address carried in the IPv6 packet can be used. The IPv4 address of the specific rule IPv4 prefix. The IPv6 prefix of the first routing device is allocated by the operator to the first routing device, for example, the DHCPv6 server delegates the first routing device by using a DHCPv6 Prefix Delegation (DHCPv6-PD) The IPv6 prefix, or the IPv6 prefix assigned by the Provider Edge Router to the first routing device by means of Stateless Address Auto-Configuration (SLAAC).

The first routing device is a CE located at the boundary of the user network, and the second routing device is a BR located between the IPv6 network and the IPv4 network. The DHCPv6 server delivers the DMR for accessing the BR and the BMR that is not completely correct, that is, the second BMR, as shown in FIG. 7. The second BMR may further include a specific A regular IPv4 prefix and a third EA bit length, the third EA bit length being used to indicate the length of the IPv4 suffix in the IPv6 prefix allocated to the CE. The CE uses the DMR to encapsulate or translate the received IPv4 packets into IPv6 packets and send them to the BR. Since the BR is the correct BMR, the first BMR, as shown in Figure 5. Therefore, the BR can obtain the public network IPv4 address of the CE according to the source B6 address of the first BMR and the IPv6 packet from the CE. Then, the BR can use the obtained public network IPv4 address of the CE to update the source IPv4 address carried by the IPv6 packet. Then, the BR can use the first BMR to match the location carried by the IPv6 packet. And the routing information corresponding to the destination IPv4 address, and forwarding the content of the IPv4 packet according to the routing information. If the destination IPv4 address carried in the IPv6 packet that the BR receives is matched with the rule IPv4 prefix in the first BMR of a MAP domain in the BR, the destination device is in the certain one to which the BR belongs. In the MAP domain, the BR will use the IPv6 packet to forward the content of the IPv4 packet, that is, the content of the IPv4 packet is sent to another CE through the BR; if the IPv6 packet received by the BR is carried The destination IPv4 address does not match the rule IPv4 prefix in the first BMR of any MAP domain in the BR, and the BR forwards the content of the IPv4 packet carried in the IPv6 packet to the IPv4 public network. The terminal communicates with the destination device through the CE through the IPv6 network and through the BR. Since all the IPv4 packets initiated by the terminal are sent to the destination device through the CE and the BR, the star communication mode is implemented in the application scenario of the MAP technology. Improve BR's ability to manage user traffic. FIG. 8 is a schematic flowchart of a packet processing method according to another embodiment of the present application, as shown in FIG. 8.

801. The second routing device receives the IPv6 packet sent by the first routing device, where the IPv6 packet is the IPv6 address or the prefix of the second routing device after the first routing device receives the IPv4 packet. The IPv4 packet is encapsulated or translated, and the IPv4 packet includes a destination IPv4 address.

802. The second routing device updates the source IPv4 address carried in the IPv6 packet according to the source IPv6 address of the first BMR and the IPv6 packet, and uses the first BMR to match the destination IPv4 address. Routing information.

803. The second routing device forwards the content of the IPv4 packet according to the routing information.

Specifically, the first routing device may specifically encapsulate or translate the IPv4 packet into an IPv6 packet, that is, a network address translation (NAT) 44 and a MAP. In the NAT 44 module, the private network IPv4 address and port in the received IPv4 packet are converted into a public network IPv4 address; in the MAP module, the IPv4 packet processed by the NAT44 module is encapsulated or Translated into IPv6 messages.

It is to be understood that the first routing device may specifically encapsulate or translate the IPv4 packet into an IPv6 packet by using a function module, which is not limited in this embodiment.

The IPv6 packet may carry the source IPv4 address (that is, the public network IPv4 address) in one of the two modes: one mode is carried in the packet header, and the packet header is carried in the IPv4 packet; For the translation, it is carried by the field in the interface identifier (interface ID) of the source IPv6 address of the IPv6 packet. In this embodiment, the terminal communicates with the destination device through the IPv6 network and through the second routing device by using the first routing device, and all the IPv4 packets initiated by the terminal are required to pass through the first routing device and the second routing device. The device is sent to the destination device. Therefore, the star communication mode is implemented in the application scenario of the MAP technology, which can improve the management capability of the second routing device, that is, the network side device, to the user communication traffic.

Optionally, in an optional implementation manner of this embodiment, the first routing device is different. In the scenario of enjoying the IPv4 address of the public network, before the 801, the first routing device receives the PSID of the first routing device and the IPv6 address or prefix of the second routing device delivered by the DHCPV6 server, and does not deliver the packet. The BMR is such that the first routing device cannot obtain the public network IPv4 prefix or address of the first routing device according to the BMR. Correspondingly, in the case that the first routing device cannot use the BMR to match the routing information corresponding to the destination IPv4 address, the first routing device may use the IPv6 address or prefix of the second routing device. The IPv4 packet is encapsulated or translated into an IPv6 packet and sent to the second routing device. In addition, since the first routing device cannot obtain the public network IPv4 address, the source IPv4 address carried by the IPv6 packet sent by the first routing device may be a specific IPv4 address, for example: Applying at the IANA Registered specific unicast IPv4 address, or similar to 192.0.0.2 used to identify B4 in DS-lite technology, or all 0 or all 1s.

The first routing device is a CE located at the boundary of the user network, and the second routing device is a BR located between the IPv6 network and the IPv4 network. The DHCPv6 server delivers the DMR for accessing the BR and the PSID of the CE in the parameters sent to the CE. The DMR includes an IPv6 address or prefix of the BR. The CE uses the DMR to encapsulate or translate the received IPv4 packets into IPv6 packets and send them to the BR. Since the complete BMR, the first BMR, is retained in the BR, as shown in FIG. Therefore, the BR may obtain the public network IPv4 address of the CE according to the source IPv6 address of the first BMR and the IPv6 packet from the CE, and update the source IPv4 address carried by the IPv6 packet by using the public network IPv4 address. Then, the BR can use the first BMR to match the routing information corresponding to the destination IPv4 address, and forward the content of the IPv4 packet according to the routing information. For example, if the destination IPv4 address carried in the IPv6 packet received by the BR matches the rule IPv4 prefix in the first BMR of a MAP domain in the BR, the destination device is located in the BR. In the MAP domain, the BR will use the IPv6 packet to perform the backhaul processing on the content of the IPv4 text, that is, the content of the IPv4 text is sent to another CE through the BR; if the IPv6 packet received by the BR is carried The destination IPv4 address does not match the rule IPv4 prefix in the first BMR of any MAP domain in the BR, and the BR forwards the content of the IPv4 packet carried in the IPv6 packet to the IPv4 public network. The terminal communicates with the destination device through the CE through the IPv6 network and through the BR. Since all the IPv4 packets initiated by the terminal are sent to the destination device through the CE and the BR, the star communication mode is implemented in the application scenario of the MAP technology. Improve BR's management of user traffic Ability.

Optionally, in an optional implementation manner of this embodiment, in a scenario in which the first routing device shares the public network IPv4 address, the first routing device receives the incomplete information sent by the DHCPV6 server before the 801. The BMR (ie, the second BMR) and the DMR, that is, the server does not deliver the complete BMR (ie, the first BMR), so that the first routing device cannot obtain the first routing device according to the second BMR. Public network IPv4 address. Optionally, the second BMR may further include a first EA (Embedded Address, EA) bit length (EA bits), where the first EA bit length is used to indicate that the first routing device is allocated to the first routing device. The length of the PSID in the IPv6 prefix. The DMR is used to access the second routing device, that is, the DMR includes the IPv6 address of the second routing device or its IPv6 prefix. That is, before 801, the first routing device cannot use the second BMR to match the routing information corresponding to the destination IPv4 address. Correspondingly, because the first routing device cannot use the incomplete BMR (ie, the second BMR) to match the routing information corresponding to the destination IPv4 address, the first routing device will utilize the DMR, and the IPv4 The packet is encapsulated or translated into an IPv6 packet and sent to the second routing device. In addition, the source IPv4 address carried by the first routing device may be a specific IPv4 address, because the first routing device cannot obtain the public network IPv4 address of the first routing device. For example: a specific unicast IPv4 address that is applied for registration at the IANA, or 192.0.0.2, or all 0s or all 1s, used to identify B4 in DS-lite technology. The IPv6 prefix of the first routing device is allocated by the operator to the first routing device, for example, the DHCPv6 server sends the first route to the DHCPv6 Prefix Delegation (DHCPv6-PD) in DHCPv6. The device assigns an IPv6 prefix, or the Stateless Address Auto-Configuration (SLAAC) server assigns the IPv6 prefix to the first routing device by using the SLAAC method.

Optionally, in an optional implementation manner of this embodiment, in a scenario where different first routing devices do not share a public network IPv4 address, before the 801, the first routing device may further receive the DHCPV6 server only. The DMR, that is, the server only delivers the DMR, and does not deliver the BMR, so that the first routing device cannot obtain the public network IPv4 prefix or address of the first routing device according to the BMR. The DMR is used to access the second routing device, that is, the DMR includes the IPv6 address of the second routing device or its IPv6 prefix. Correspondingly, the first routing device can use the DMR to encapsulate or translate the IPv4 packet into an IPv6 packet by using the DMR to match the routing information corresponding to the destination IPv4 address. The text is sent to the second routing device. In addition, since the first routing device cannot obtain the public network IPv4 address, the source IPv4 address carried by the IPv6 packet sent by the first routing device may be a specific IPv4 address, for example: Applying at the IANA Registered specific unicast IPv4 address, or similar to 192.0.0.2 used to identify B4 in DS-lite technology, or all 0 or all 1s. The IPv6 prefix of the first routing device is allocated by the operator to the first route. The device, for example, the DHCPv6 server delegates the IPv6 prefix to the first routing device by using the DHCPv6 Prefix Delegation (DHCPv6-PD) method, or the Stateless Address Auto-Configuration (SLAAC) server passes the device. The SLAAC mode assigns the IPv6 prefix to the first routing device.

The first routing device is a CE located at the boundary of the user network, and the second routing device is a BR located between the IPv6 network and the IPv4 network. The DHCPv6 server delivers the DMR for accessing the BR and does not deliver the BMR. The CE uses the DMR to encapsulate or translate the received IPv4 packets into IPv6 packets and send them to the BR. Since the complete BMR, the first BMR, is retained in the BR, as shown in Figure 5. Therefore, the BR can obtain the public network IPv4 prefix or address of the CE according to the source B6 address of the first BMR and the IPv6 packet from the CE. If the BR obtains the public network IPv4 prefix of the CE, the BR may select an address in the network segment indicated by the IPv4 prefix of the public network according to a preset rule, for example, the available first address of the network segment, as The public network IPv4 address of the CE. Then, the BR can update the source IPv4 address carried by the IPv6 packet by using the obtained public network IPv4 address of the CE. Then, the BR can use the first BMR to match the location carried by the IPv6 packet. And the routing information corresponding to the destination IPv4 address, and forwarding the content of the IPv4 packet according to the routing information. For example, if the destination IPv4 address carried in the IPv6 packet received by the BR matches the rule IPv4 prefix in the first BMR of a MAP domain in the BR, the destination device is in the In the MAP domain, the BR will use the IPv6 packet to forward the content of the IPv4 packet, that is, the content of the IPv4 packet is sent to another CE through the BR; if the IPv6 packet received by the BR is carried The destination IPv4 address does not match the rule IPv4 prefix in the first BMR of any MAP domain in the BR, and the BR forwards the content of the IPv4 packet carried in the IPv6 packet to the IPv4 public network.

Optionally, in an optional implementation manner of this embodiment, in a scenario in which the first routing device shares the public network IPv4 address, before the 801, the first routing device receives the DHCPV6 server that is not completely correct. BMR (ie second BMR) and the DMR, ie the server The BMR (ie, the first BMR) is not delivered correctly, so that the first routing device cannot obtain the public network IPv4 address of the first routing device according to the second BMR. Optionally, the second BMR may further include a specific rule IPv4 prefix (for example: 10.10.10.10 / · [the length of the rule IPv4 prefix], or all 0s or all 1s, etc.) and the second EA bit length The second EA bit length is used to indicate the sum of the IPv4 suffix and the length of the PSID in the IPv6 prefix allocated to the first routing device, where the IPv4 suffix is removed from the IPv4 address of the first routing device. The remainder of the rule after the corresponding length of the IPv4 prefix. The DMR is used to access the second routing device, that is, the DMR includes the IPv6 address of the second routing device or its IPv6 prefix. That is, before 801, the first routing device cannot use the second BMR to match the routing information corresponding to the destination IPv4 address. Correspondingly, since the first routing device cannot use the BMR (ie, the second BMR) that is not completely correct, and the routing information corresponding to the destination IPv4 address is matched, the first routing device may use the DMR to The IPv4 packet is encapsulated or translated into an IPv6 packet and sent to the second routing device. In addition, the first routing device cannot obtain the public network IPv4 address of the first routing device by using the incomplete BMR (ie, the second BMR), and therefore, the first routing device sends the The source IPv4 address carried in the IPv6 packet may be an IPv4 address using the specific rule IPv4 prefix. The IPv6 prefix of the first routing device is allocated by the operator to the first routing device, for example, the DHCPv6 server sends the first route to the DHCPv6 Prefix Delegation (DHCPv6-PD) in DHCPv6. The device assigns an IPv6 prefix, or the Stateless Address Auto-Configuration (SLAAC) server assigns the IPv6 prefix to the first routing device by using the SLAAC method.

The first routing device is a CE located at the boundary of the user network, and the second routing device is a BR located between the IPv6 network and the IPv4 network. The DHCPv6 server delivers the DMR for accessing the BR and the BMR that is not completely correct, that is, the second BMR, as shown in FIG. 6. The second BMR may further include a specific A regular IPv4 prefix and a second EA bit length, the second EA bit length being used to indicate a sum of an IPv4 suffix and a length of the PSID in an IPv6 prefix allocated to the CE. The CE uses the DMR to encapsulate or translate the received IPv4 packets into IPv6 packets and send them to the BR. Since the BR is the correct BMR, the first BMR, as shown in Figure 4. Therefore, the BR can be based on the first BMR and The source IPv6 address of the IPv6 packet from the CE obtains the public IPv4 address of the CE, and the IPv4 address of the public network updates the source IPv4 address carried in the IPv6 packet. Then, the BR can use the first BMR. The routing information corresponding to the destination IPv4 address carried in the IPv6 packet is matched, and the content of the IPv4 packet is forwarded according to the routing information. If the destination IPv4 address carried in the IPv6 packet received by the BR matches the rule IPv4 prefix in the first BMR of a MAP domain in the BR, the destination device is in a certain MAP to which the BR belongs. In the domain, the BR will use the IPv6 packet to perform the backhaul processing on the content of the IPv4 packet, that is, the content of the IPv4 packet is sent to another CE through the BR; if the destination of the IPv6 packet received by the BR is carried The IPv4 address does not match the rule IPv4 prefix in the first BMR of any MAP domain in the BR, and the BR forwards the content of the IPv4 packet carried in the IPv6 packet to the IPv4 public network. The terminal communicates with the destination device through the CE through the IPv6 network and through the BR. Since all the IPv4 packets initiated by the terminal are sent to the destination device through the CE and the BR, the star communication mode is implemented in the application scenario of the MAP technology. Improve BR's ability to manage user traffic.

Optionally, in an optional implementation manner of this embodiment, in a scenario where different first routing devices do not share a public network IPv4 address, before the 801, the first routing device receives an incomplete delivery by the DHCPV6 server. The correct BMR (ie, the second BMR) and the DMR, that is, the server does not deliver the completely correct BMR (ie, the first BMR), so that the first routing device cannot obtain the first route according to the second BMR. The public network IPv4 prefix or address of the device. Optionally, the second BMR may further include a specific rule IPv4 prefix (for example: 10.10.10.10 / · [the length of the rule IPv4 prefix], or all 0s or all 1s, etc.) and the third EA bit length The length of the third EA bit is used to indicate the length of the IPv4 suffix in the IPv6 prefix allocated to the first routing device, and the IPv4 suffix is the IPv4 prefix or address of the first routing device. The remainder of the rule after the corresponding length of the IPv4 prefix. The DMR is used to access the second routing device, that is, the DMR includes the IPv6 address of the second routing device or its IPv6 prefix. That is, before 801, the first routing device cannot use the second BMR to match the routing information corresponding to the destination IPv4 address. Correspondingly, the first routing device uses the DMR, because the first routing device cannot use the incompletely correct BMR (ie, the second BMR) to match the routing information corresponding to the destination IPv4 address. The IPv4 packet is encapsulated or translated into an IPv6 packet and sent to the second routing device. In addition, since the first routing device cannot obtain the public network IPv4 prefix or address of the first routing device by using the BMR (ie, the second BMR), the first routing device sends the The source IPv4 address carried in the IPv6 packet may be an IPv4 address using the specific rule IPv4 prefix.

The IPv6 prefix of the first routing device is allocated by the operator to the first routing device, for example, the DHCPv6 server sends the first route to the DHCPv6 Prefix Delegation (DHCPv6-PD) in DHCPv6. The device assigns an IPv6 prefix, or the Stateless Address Auto-Configuration (SLAAC) server assigns the IPv6 prefix to the first routing device by using the SLAAC method.

The first routing device is a CE located at the boundary of the user network, and the second routing device is a BR located between the IPv6 network and the IPv4 network. The DHCPv6 server delivers the DMR for accessing the BR and the BMR that is not completely correct, that is, the second BMR, as shown in FIG. 7. The second BMR may further include a specific A regular IPv4 prefix and a third EA bit length, the third EA bit length being used to indicate the length of the IPv4 suffix in the IPv6 prefix allocated to the CE. The CE uses the DMR to encapsulate or translate the received IPv4 packets into IPv6 packets and send them to the BR. Since the BR is the correct BMR, the first BMR, as shown in Figure 5. Therefore, the BR can obtain the public network IPv4 address of the CE according to the source IPv6 address of the first BMR and the IPv6 packet from the CE. Then, the BR can use the obtained public network IPv4 address of the CE to update the source IPv4 address carried by the IPv6 packet. Then, the BR can use the first BMR to match the location carried by the IPv6 packet. And the routing information corresponding to the destination IPv4 address, and forwarding the content of the IPv4 packet according to the routing information. If the destination IPv4 address carried in the IPv6 packet that the BR receives is matched with the rule IPv4 prefix in the first BMR of a MAP domain in the BR, the destination device is in the certain one to which the BR belongs. In the MAP domain, the BR will use the IPv6 packet to forward the content of the IPv4 packet, that is, the content of the IPv4 packet is sent to another CE through the BR; if the IPv6 packet received by the BR is carried The destination IPv4 address does not match the rule IPv4 prefix in the first BMR of any MAP domain in the BR, and the BR forwards the content of the IPv4 packet carried in the IPv6 packet to the IPv4 public network.

The terminal communicates with the destination device through the IPv6 network through the CE and through the BR. All the IPv4 packets sent by the terminal must be sent to the destination device through the CE and the BR. Therefore, the star communication mode is implemented in the application scenario of the MAP technology, which can improve the management capability of the BR to the user communication traffic.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present application is not limited by the described action sequence. Because in accordance with the present application, certain steps may be performed in other orders or concurrently. In the following, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application. In the above embodiments, the descriptions of the various embodiments are different, and the details are not described in detail in an embodiment, and the related descriptions of other embodiments can be referred to. FIG. 9 is a schematic structural diagram of a routing device according to another embodiment of the present disclosure. As shown in FIG. 9, the routing device in this embodiment may include a first receiver 91, a processor 92, and a transmitter 93. The first receiver 91 is configured to receive an IPv4 packet, where the IPv4 packet includes a destination IPv4 address, and the processor 92 is configured to encapsulate or translate the IPv4 packet by using an IPv6 address or a prefix of the second routing device. The IPv6 packet is sent to the second routing device, so that the second routing device updates the location according to the source address and the source IP address of the first BMR and the IPv6 packet. The source I Pv4 address carried in the I Pv6 message, and the routing information corresponding to the destination IPv4 address is matched by using the first BM R, and the content of the IPv4 packet is forwarded according to the routing information.

It can be understood that the first receiver 91 is located at a user side local area network (LAN) interface of the routing device.

Optionally, in an optional implementation manner of this embodiment, in a scenario where different first routing devices do not share a public network IPv4 address, as shown in FIG. 10, the routing device provided in this embodiment may further The second receiver 1001 is configured to receive the DMR that is only sent by the DHCPv6 server. It can be understood that the second receiver 1001 is located on a user side Wide Area Network (WAN) interface of the routing device. For details, refer to related content in the corresponding embodiment of FIG. 1 , and details are not described herein again. Optionally, in an optional implementation manner of this embodiment, as shown in FIG. 11 , the routing device provided in this embodiment may further include a third receiver 1 101, and further includes a third receiving. And receiving the PSID of the first routing device and the IPv6 address or prefix of the second routing device delivered by the DHCPV6 server. For details, refer to related content in the embodiment corresponding to FIG. 1, and details are not described herein again.

Optionally, in an optional implementation manner of this embodiment, as shown in FIG. 12, the routing device provided in this embodiment may further include a fourth receiver 1201, configured to receive a number delivered by a DHCPV6 server. The second BMR and the DMR; the processor cannot use the second BMR to match the routing information corresponding to the destination IPv4 address. It can be understood that the fourth receiver 1201 is located at the user side WAN interface of the routing device. For details, refer to related content in the embodiment corresponding to FIG. 1, and details are not described herein again. For example, in a scenario in which the first routing device shares the public network IPv4 address, the second BMR received by the fourth receiver 1201 may include a first EA bit length, where the first EA bit length is used to indicate the allocation. The length of the PSID in the IPv6 prefix of the routing device. For details, refer to related content in the embodiment corresponding to FIG. 1, and details are not described herein again. For example, in a scenario in which the first routing device shares the public network IPv4 address, the second BMR received by the fourth receiver 1201 may include a specific rule IPv4 prefix and a second EA bit length, where the second EA bit is included. The bit length is used to indicate the sum of the IPv4 suffix and the length of the PSID in the IPv6 prefix allocated to the routing device, where the IPv4 suffix is the remaining length of the IPv4 address of the routing device excluding the rule IPv4 prefix. section. For details, refer to related content in the embodiment corresponding to FIG. 1, and details are not described herein again. For example, in a scenario in which the first routing device does not share the public network IPv4 address, the second BMR received by the fourth receiver 1201 may include a specific rule IPv4 prefix and a third EA bit length, and the third EA. The bit length is used to indicate the length of the IPv4 suffix in the IPv6 prefix assigned to the routing device, and the IPv4 suffix is the remainder of the IPv4 address or prefix of the routing device excluding the corresponding length of the rule IPv4 prefix. . For details, refer to related content in the embodiment corresponding to FIG. 1, and details are not described herein again. In this embodiment, the terminal communicates with the destination device through the IPv6 network and through the second routing device, and all the IPv4 packets initiated by the terminal are sent to the destination device through the routing device and the second routing device. Therefore, the star communication mode is implemented in the application scenario of the MAP technology, which can improve the communication traffic of the second routing device, that is, the network side device to the user. Management ability.

FIG. 13 is a schematic structural diagram of a routing device according to another embodiment of the present disclosure. As shown in FIG. 13, the routing device in this embodiment may include a receiver 1301, a processor 1302, and a transmitter 1303. The receiver 1301 is configured to receive an IPv6 packet sent by the first routing device, where the IPv6 packet is the IPv6 address or prefix of the routing device after the first routing device receives the IPv4 packet, The IPv4 packet is encapsulated or translated, and the IPv4 packet includes the destination IPv4 address. The processor 1302 is configured to update the source IPv4 carried by the IPv6 packet according to the source IPv6 address of the first BMR and the IPv6 packet. Addressing, and using the first BMR, matching the routing information corresponding to the destination IPv4 address; the sender 1303 is configured to forward the content of the IPv44 message according to the routing information. For details, refer to related content in the embodiment corresponding to FIG. 8, and details are not described herein again. In this embodiment, the terminal communicates with the destination device through the IPv6 network and through the routing device, and all the IPv4 packets initiated by the terminal are sent to the destination device through the first routing device and the routing device. Therefore, the star communication mode is implemented in the application scenario of the MAP technology, which can improve the management capability of the routing device, that is, the network side device, to the user communication traffic.

The embodiment of the present application further provides a packet processing system, including the routing device provided in any one of the embodiments in FIG. 9 to FIG. 12 and the routing device provided in the embodiment corresponding to FIG. A person skilled in the art can clearly understand that the specific working process of the system, the device and the unit described above can be referred to the corresponding process in the foregoing method embodiments for the convenience and brevity of the description, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form. The components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a hardware plus software functional unit.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute the method of the various embodiments of the present application. All or part of the steps. The foregoing storage medium includes: a U disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disk or an optical disk, and the like, which can store program codes. Medium.

Finally, it should be noted that the above embodiments are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application is described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently substituted; and the modifications or substitutions do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

Rights request

A packet processing method, comprising:

The first routing device receives the Internet Protocol version 4 IPv4 packet, and the IPv4 packet includes the destination IPv4 address. The first routing device encapsulates the IPv4 packet by using the Internet Protocol version 6 IPv6 address or prefix of the second routing device. Translating the IPv6 packet to the second routing device, so that the second routing device updates the I Pv6 packet carrying according to the first basic mapping rule BMR and the source I Pv6 address of the IPv6 packet. The source I Pv4 address, and the routing information corresponding to the destination IPv4 address is matched by using the first BM R, and the content of the IPv4 packet is forwarded according to the routing information.

The method according to claim 1, wherein the first routing device encapsulates or translates the IPv4 packet into an IPv6 packet by using an Internet Protocol version 6 IPv6 address or a prefix of the second routing device. Before the second routing device, the method further includes:

The first routing device receives the IPv6 address or prefix of the second routing device that is only delivered by the DHCP6 server.

The first routing device receives the port set identifier PSID of the first routing device and the IPv6 address or prefix of the second routing device delivered by the DHCPV6 server.

The method according to claim 1, wherein the first routing device encapsulates or translates the IPv4 packet into an IPv6 packet by using an Internet Protocol version 6 IPv6 address or a prefix of the second routing device. Before the second routing device, the method further includes: the first routing device receiving the second BMR delivered by the DHCPV6 server and the IPv6 address or prefix of the second routing device; after the first routing device receives the IPv4 packet, And before the first routing device uses the IPv6 address or the prefix of the second routing device to encapsulate or translate the IPv4 packet into an IPv6 packet and send the message to the second routing device, the first routing device further includes:

The first routing device cannot use the second BMR to match the destination IPv4 The routing information corresponding to the address.

The method according to claim 4, wherein the second BMR includes a first embedded address EA bit length, and the first EA bit length is used to indicate that the first routing device is allocated to the first routing device. The length of the PSID in the IPv6 prefix.

The method according to claim 4, wherein the second BMR includes a specific regular IPv4 prefix and a second EA bit length, and the second EA bit length is used to indicate the allocation to the The sum of the IPv4 suffix in the IPv6 prefix of the first routing device and the length of the PSID, the IPv4 suffix being the remainder of the IPv4 address of the first routing device after removing the corresponding length of the regular IPv4 prefix.

The method according to claim 4, wherein the second BMR includes a specific regular IPv4 prefix and a third EA bit length, and the third EA bit length is used to indicate that the The length of the IPv4 suffix in the IPv6 prefix of the first routing device, where the IPv4 suffix is the remaining portion of the IPv4 prefix or address of the first routing device after the corresponding length of the regular IPv4 prefix is removed.

8. A message processing method, characterized in that:

The second routing device receives the Internet Protocol version 6 IPv6 packet sent by the first routing device, where the IPv6 packet is the IPv6 address of the second routing device after the first routing device receives the Internet Protocol version 4 IPv4 packet or a prefix, the IPv4 packet is encapsulated or translated, and the IPv4 packet includes a destination IPv4 address;

The second routing device updates the source IPv4 address carried in the IPv6 packet according to the first basic mapping rule BMR and the source IPv6 address of the IPv6 packet, and uses the first BMR to match the destination IPv4 address. Corresponding routing information;

The second routing device forwards the content of the IPv4 packet according to the routing information.

A routing device, comprising: a first receiver, configured to receive an Internet Protocol version 4 IPv4 message, where the IPv4 message includes a destination IPv4 address; and a processor, configured to use the second routing device The IPv6 packet is encapsulated or translated into an IPv6 packet by using an Internet Protocol version 6 IPv6 address or a prefix; a transmitter, configured to send the IPv6 packet to the second routing device, so that the second routing device updates the IPv6 packet according to the first basic mapping rule BMR and the source IPv6 address of the IPv6 packet The source IPv4 address carried in the file, and the routing information corresponding to the destination IPv4 address is matched by using the first BMR, and the content of the IPv4 packet is forwarded according to the routing information.

The routing device according to claim 9, wherein the routing device further includes a second receiver, configured to receive the IPv6-enabled dynamic host configuration protocol, and the second routing device that is only delivered by the DHCPV6 server IPv6 address or prefix.

The routing device according to claim 9, wherein the routing device further includes a third receiver, configured to receive a port set identifier PSID of the first routing device delivered by a DHCPV6 server, and the The IPv6 address or prefix of the second routing device.

The routing device according to claim 9, wherein the routing device further includes a fourth receiver, configured to receive an IPv6 address or a prefix of the second BMR and the second routing device delivered by the DHCPV6 server. The processor cannot use the second BMR to match the routing information corresponding to the destination IPv4 address.

The routing device according to claim 12, wherein the second BMR received by the fourth receiver includes a first embedded address EA bit length, and the first EA bit length is used to indicate allocation. The length of the PSID in the IPv6 prefix given to the routing device.

The routing device according to claim 12, wherein the second BMR received by the fourth receiver includes a specific rule IPv4 prefix and a second EA bit length, and the second EA bit length And indicating a sum of an IPv4 suffix in the IPv6 prefix allocated to the routing device and a length of the PSID, where the IPv4 suffix is the remaining portion of the IPv4 address of the routing device after removing the corresponding length of the rule IPv4 prefix.

The routing device according to claim 12, wherein the second BMR received by the fourth receiver includes a specific regular IPv4 prefix and a third EA bit length, and the third EA bit length And indicating the length of the IPv4 suffix in the IPv6 prefix allocated to the routing device, where the IPv4 suffix is the remaining portion of the IPv4 address or prefix of the routing device after removing the corresponding length of the rule IPv4 prefix.

16. A routing device, comprising: a receiver, configured to receive an Internet Protocol version 6 IPv6 packet sent by the first routing device, where the IPv6 packet is an IPv6 address or location of the routing device after the first routing device receives the Internet Protocol version 4 IPv4 packet Encapsulating or translating the IPv4 packet into an IPv6 prefix, where the IPv4 packet includes a destination IPv4 address;

a processor, configured to update a source IPv4 address carried in the IPv6 packet according to a first basic mapping rule BMR and a source IPv6 address of the IPv6 packet, and use the first BMR to match the destination IPv4 address The routing information is used by the sender to forward the content of the IPv4 packet according to the routing information.

A message processing system, comprising: the routing device according to any one of claims 9 to 15 and the routing device according to claim 16.