CN102447703A - Hot backup method and system as well as CGN (carrier grade network address translation (NAT)) equipment - Google Patents

Hot backup method and system as well as CGN (carrier grade network address translation (NAT)) equipment Download PDF

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CN102447703A
CN102447703A CN 201110448541 CN201110448541A CN102447703A CN 102447703 A CN102447703 A CN 102447703A CN 201110448541 CN201110448541 CN 201110448541 CN 201110448541 A CN201110448541 A CN 201110448541A CN 102447703 A CN102447703 A CN 102447703A
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cgn
equipment
backup
hot
business
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CN 201110448541
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Chinese (zh)
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兰光华
韩杰
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中兴通讯股份有限公司
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Abstract

The invention provides a hot backup method and system as well as CGN (carrier grade network address translation (NAT)) equipment. The hot backup method comprises the following steps: a master control management unit of first CGN equipment sends first user information to second CGN equipment for backup; and after receiving a backup notice from the second CGN equipment, a first business processing unit of the first CGN equipment sends all session information under a first user to the second CGN equipment for backup. By adopting the technical proposal, dual-computer hot backup among the CGN equipment for NAT business is realized in a centralized deployment scene, which improves the business reliability and realizes load sharing.

Description

一种热备份方法和系统、CGN设备 A thermal method and system for backup, CGN device

技术领域 FIELD

[0001] 本发明涉及通信领域,更具体地涉及一种分布式多处理器CGN设备间的热备方法和系统、CGN设备。 [0001] The present invention relates to the field of communications, and more particularly, to a method and system for hot standby between a distributed multiprocessor CGN device, CGN device.

背景技术 Background technique

[0002] 双找隨道网络地址转换(Dual-stack lite Carrier Grade Network Address Translation,简称DS-Lite CGN)是一种在IPv4 (互联网协议第四版)网络向IPv6(互联网协议第六版)网络过渡下的网络地址转换技术。 [0002] Double find with the Road Network Address Translation (Dual-stack lite Carrier Grade Network Address Translation, abbreviated DS-Lite CGN) is a kind of IPv4 (Internet Protocol version) network to IPv6 (Internet Protocol version 6) network under the transition network address translation technology.

[0003] 图1说明了一种DS-Lite CGN集中式的部署场景,其中,接入终端包含但不局限于个人电脑、平板电脑、智能手机等,接入终端发出IPv4报文到接入网关设备,接入网关设备将其封装成4in6(IPv4 in IPv6,是一种将Ipv4报文封装到Ipv6报文的载荷中进行传输,到达隧道终点时,再剥出IPv4报文进行转发)隧道报文通过隧道(软线)转发到CGN(Carrier Grade NAT,运营商级网络地址转换)设备,CGN设备剥离隧道头后经过NAT44(IPv4到IPv4的网络地址转换)网络地址转换转发到因特网;因特网的IPv4报文到达CGN设备,经过NAT44转换后被封装成4in6隧道报文通过隧道转发到接入网关设备,接入网关设备剥掉隧道头后将IPv4报文送达接入终端。 [0003] FIG 1 illustrates a DS-Lite CGN centralized deployment scenario, where the access terminal comprising but not limited to personal computers, tablet PCs, smart phones and the like, the access terminal sends the IPv4 packet to the access gateway equipment, the access gateway device encapsulates the 4in6 (when IPv4 in IPv6, a packet is encapsulated into the Ipv4 Ipv6 payload packets for transmission, reach the end of the tunnel, and then stripping the IPv4 packet forwarding) tunnel packet forwarded by the tunnel (cord) to CGN (carrier grade NAT, carrier-grade network address translation) device, CGN through NAT44 (IPv4 network address to the IPv4 conversion) after the device stripping the tunnel header network address translation is forwarded to the Internet; Internet CGN device IPv4 packet arrives, after conversion after NAT44 4in6 tunnel encapsulated packet forwarded through the tunnel to the access gateway apparatus, the access gateway device peeled off after tunnel header in the IPv4 packet access terminal served.

[0004] 当前的CGN设备多为分布式系统,可以按需配置其业务卡和线卡的配比。 [0004] Current Multi CGN device as a distributed system, its proportion may-demand service card and line card. 图2为CGN设备分布式单元结构,每个单元对应一个处理器;主控管理单元集中管理多个业务处理单元和报文转发单元;多个业务处理单元进行分担来自报文转发单元的业务流量,一种实现是根据用户IPv6地址来分流,尽量均勻的分发到各业务处理单元中。 FIG 2 is a CGN device distributed structural units, each unit corresponding to a processor; master managing unit manage multiple traffic processing units, and packet forwarding unit; a plurality of service processing units share the traffic from the packet forwarding unit An implementation is to split the IPv6 address according to the user, as far as possible evenly distributed to each of the service processing units.

[0005] 上述方案的分布式CGN设备,其部署还在测试阶段,并未大规模商用,而业界的分布式CGN设备仅能够支持业务卡间的备份,并不支持CGN设备间的双机热备。 Distributed CGN device [0005] above solution, deployed in beta, not large-scale commercial, industry and distributed CGN device can only support backup between business card, do not support hot between the CGN device equipment.

发明内容 SUMMARY

[0006] 本发明要解决的技术问题是提供一种热备份方法、CGN设备及系统,以CGN设备之间的双机热备份。 [0006] The present invention is to solve the technical problem of providing a method for hot backup, CGN device and a system between the dual hot backup CGN device.

[0007] 为了解决上述技术问题,本发明提供了一种热备份方法,包括: [0007] To solve the above problems, the present invention provides a hot backup method, comprising:

[0008] 第一运营商级网络地址转换(CGN)设备的主控管理单元将第一用户信息发送给第二CGN设备进行备份;第一CGN设备的第一业务处理单元接收到第二CGN设备的备份通知后,将所述第一用户下的所有会话信息发送给第二CGN设备进行备份。 [0008] The first stage carrier network address translation (CGN) master device management unit transmits the first information to the second user CGN device for backup; CGN first service of the first device to the second processing unit receives CGN device after notification backup, all session information in the first user to a second CGN device for backup.

[0009] 进一步地,上述方法还具有下面特点:第一CGN设备的主控管理单元将第一用户信息发送给第二CGN设备进行备份的过程中,还包括: [0009] Furthermore, the above method also has the following features: a first master CGN device management unit transmits the first information to the second user CGN device backup process, further comprising:

[0010] 第一CGN设备的主控管理单元将第一用户信息同步给第一CGN设备的第一业务处理单元。 [0010] CGN first master device management unit of the first user to the first service of the first synchronization information CGN device processing unit.

[0011] 进一步地,上述方法还具有下面特点: [0011] Furthermore, the above method also has the following characteristics:

[0012] 如第一CGN设备采用轻量级双栈隧道(DS-Lite)网络地址转换技术进行网络地址转换,则第一用户信息包括:IPv6前缀、子网前缀长度、隧道信息和虚拟专用网络信息,所述隧道信息至少包括用户IPv6地址和隧道目的IPv6地址; [0012] The first device uses a lightweight dual stack CGN tunnel (DS-Lite) network address translation, network address translation technology, the first user information comprises: IPv6 prefix, subnet prefix length, and virtual private network tunnel information information, including at least the user information of the tunnel IPv6 address, and destination IPv6 address of the tunnel;

[0013] 如第一CGN设备采用IPv6到IPv4的网络地址转换技术(NAT64)进行报文转换, 则第一用户信息包括:IPv6前缀及子网前缀长度、NAT64前缀和虚拟专用网络信息; [0013] The equipment uses the network address of the first CGN IPv6 to IPv4 transition technology (the NAT64) for packet conversion, the first user information comprises: IPv6 subnet prefix and the prefix length, the NAT64 prefix and virtual private network information;

[0014] 如第一CGN设备采用IPv4到IPv4的网络地址转换技术(NAT44)进行报文转换, 则第一用户信息包括:IPv4地址和虚拟专用网络信息。 [0014] The first device CGN IPv4 address to an IPv4 network using conversion technology (NAT44) for packet conversion, the first user information comprises: IPv4 addresses and virtual private network information.

[0015] 进一步地,上述方法还具有下面特点:所述会话信息包括: [0015] Furthermore, the above method also has the following characteristics: the session information comprises:

[0016] 端口控制协议响应值信息、网络地址转换会话信息和应用层网关(ALG)信息,其中, [0016] Control Protocol port information in response to the value of information, session information and network address translation Application Layer Gateway (ALG), wherein

[0017] 所述网络地址转换会话信息包括:私网IPv4地址、公网IPv4地址、端口或端口块信息、协议类型,及其所属用户标识信息; [0017] The session information network address translation comprises: private IPv4 address, public IPv4 address, port, or the port block information, protocol type, and the user identification information belongs;

[0018] 所述ALG信息包括:ALG控制信息、ALG协议类型,及其所属用户标识信息。 [0018] The ALG information comprising: a control information ALG, ALG protocol type, and their respective user identification information.

[0019] 进一步地,上述方法还具有下面特点:还包括: [0019] Furthermore, the above method also has the following features: further comprising:

[0020] 第一CGN设备的主控管理单元接收到第三CGN设备的第二用户信息后,将第二用户信息同步给第二业务处理单元; After [0020] the first master CGN device management unit receives the second user equipment CGN third information, synchronization information of the second user to the second service processing unit;

[0021] 第一CGN设备的第二业务处理单元接收到第二用户信息后,向第三CGN设备发送备份通知,其中, After the [0021] first CGN second service processing unit receives device information to the second user, sending a notification to the third backup CGN device, wherein,

[0022] 第三CGN设备与第二CGN设备为同一设备,或 [0022] The third CGN CGN device and the second device is the same device, or

[0023] 第三CGN设备与第二CGN设备为不同的设备。 [0023] The third CGN CGN device and the second device are different devices.

[0024] 为了解决上述问题,本发明还提供了一种分布式运营商级网络地址转换(CGN)设备,包括:主控管理单元和第一业务处理单元,所述主控管理单元与一指定CGN设备之间建立有备份通道,第一业务处理单元与所述指定CGN设备之间建立有会话备份通道,其中, [0024] In order to solve the above problems, the present invention further provides a carrier-level Distributed Network Address Translation (the CGN) apparatus, comprising: a first master unit and a service processing management unit, the master management unit with a specified CGN device is established between the backup channel, a first service processing unit to establish a session with the designated backup path between CGN device, wherein,

[0025] 所述主控管理单元,用于将第一用户信息发送给指定CGN设备进行备份; [0025] The main management unit, configured to send a first message to the specified user CGN device for backup;

[0026] 第一业务处理单元,接收到所述指定CGN设备的备份通知后,将所述第一用户下的所有会话信息发送给所述指定CGN设备进行备份。 [0026] The first service processing unit after receiving the notification specified CGN device backup, all of the session information is sent to the first user device of the designated backup CGN.

[0027] 进一步地,上述CGN设备还具有下面特点: [0027] Further, the CGN device further has the following characteristics:

[0028] 所述主控管理单元,将第一用户信息发送给所述指定CGN设备进行备份的过程中还用于,通过预先建立的用户备份通道将第一用户信息同步给第一业务处理单元。 [0028] The main management unit transmits the information to the first user specified CGN device backup process is also used by the user pre-established backup channel to the first user a first information synchronization service processing unit .

[0029] 进一步地,上述CGN设备还具有下面特点: [0029] Further, the CGN device further has the following characteristics:

[0030] 如所述CGN设备采用轻量级双栈隧道(DS-Lite)网络地址转换技术进行网络地址转换,则第一用户信息包括:IPv6前缀、子网前缀长度、隧道目的IPv6地址和虚拟专用网络fn息; [0030] The use of the lightweight dual stack tunnel CGN device (DS-Lite) network address translation, network address translation technology, the first user information comprises: IPv6 prefix, the prefix length of the subnet, a virtual tunnel destination IPv6 address and fn private network information;

[0031] 如所述CGN设备采用IPv6到IPv4的网络地址转换技术(NAT64)进行报文转换, 则第一用户信息包括:IPv6前缀及子网前缀长度、NAT64前缀和虚拟专用网络信息; [0031] The equipment uses the network address of the CGN IPv6 to IPv4 transition technology (the NAT64) for packet conversion, the first user information comprises: IPv6 subnet prefix and the prefix length, the NAT64 prefix and virtual private network information;

[0032] 如所述CGN设备采用IPv4到IPv4的网络地址转换技术(NAT44)进行报文转换, 则第一用户信息包括:IPv4地址和虚拟专用网络信息。 [0032] The CGN device using the IPv4 address to the IPv4 network conversion technology (NAT44) for packet conversion, the first user information comprises: IPv4 addresses and virtual private network information.

[0033] 进一步地,上述CGN设备还具有下面特点:所述会话信息包括: [0033] Further, the CGN device further has the following characteristics: the session information comprises:

[0034] PCP响应值信息、网络地址转换会话信息和应用层网关(ALG)信息,其中, [0034] PCP response value information, session information and network address translation Application Layer Gateway (ALG) information, wherein,

[0035] 所述网络地址转换会话信息包括:私网IPv4地址、公网IPv4地址、端口或端口块信息、协议类型,及其所属用户标识信息; [0035] The session information of the network address translation comprises: private IPv4 address, public IPv4 address, port, or the port block information, protocol type, and the user identification information belongs;

[0036] 所述ALG信息包括:ALG控制信息、ALG协议类型,及其所属用户标识信息。 The [0036] ALG information comprises: ALG control information, ALG protocol type, and their respective user identification information.

[0037] 进一步地,上述CGN设备还具有下面特点:还包括第二业务处理单元, [0037] Further, the CGN device further has the following features: a second service processing unit further comprises,

[0038] 所述主控管理单元,还用于接收到第三CGN设备的第二用户信息后,将第二用户信息同步给第二业务处理单元; [0038] The main management unit is further configured to, after receiving the information of the third CGN second user device, the second user to synchronize the second information service processing unit;

[0039] 第二业务处理单元,用于接收到第二用户信息后,向第三CGN设备发送备份通知, 其中, [0039] The second service processing unit after receiving the information a second user, sending a notification to the third backup CGN device, wherein,

[0040] 第三CGN设备与第二CGN设备为同一设备,或 [0040] The third CGN CGN device and the second device is the same device, or

[0041] 第三CGN设备与第二CGN设备为不同的设备。 [0041] The third CGN CGN device and the second device are different devices.

[0042] 为了解决上述问题,本发明还提供了一种的热备份系统,包括:第一运营商级网络地址转换(CGN)设备和第二CGN设备,其中, [0042] In order to solve the above problems, the present invention also provides a hot backup system, comprising: a first stage carrier network address translation (CGN) CGN device and a second device, wherein,

[0043] 第一CGN设备的主控管理单元和第二CGN设备的主控管理单元之间建立有备份通道,第一CGN设备的第一业务处理单元与第二CGN设备的第一业务处理单元之间建立有会话备份通道,其中, [0043] The backup path established between the master device management unit CGN first and second master CGN device management unit, the first service of the first service of the first device CGN CGN device processing unit and the second processing unit establish a session between the backup channel, wherein,

[0044] 第一CGN设备的主控管理单元,用于将第一用户信息发送给第二CGN设备进行备份; [0044] CGN first master device management unit, configured to send a first message to the second user CGN device for backup;

[0045] 第二CGN设备的主控管理单元,用于接收到第一用户信息后,通过预先建立的用户备份通道将第一用户信息同步给第二CGN设备的第一业务处理单元; After [0045] the second master CGN device management unit, for receiving the first user information, the user pre-established by the first user information backup channel to the second synchronization device CGN first service processing unit;

[0046] 第二CGN设备的第一业务处理单元,用于接收到第一用户信息后,通知对应的第一CGN设备的第一业务处理单元; CGN first service processing unit of the first device [0046] CGN first service processing unit of the second device, after receiving the first user information, corresponding to the notification;

[0047] 第一CGN设备的第一业务处理单元,用于接收到通知后,将所述第一用户下的所有会话信息发送给对应的第二CGN设备的第一业务处理单元进行备份。 After the first service processing unit [0047] CGN device of the first service of the first processing unit, for receiving the notification, to send all the session information corresponding to the first user to a second CGN device for backup.

[0048] 综上,本发明提供一种热备份方法、CGN设备及系统,能够在集中式部署场景下,实现针对NAT业务的CGN设备间的双机热备份,提高业务稳定性,并且可以实现负载分担。 [0048] In summary, the present invention provides a method for hot backup, CGN device and system, it can be at a centralized deployment scenarios, to achieve hot backup between NAT CGN device for business, to improve the stability of business, and may be implemented load sharing.

附图说明 BRIEF DESCRIPTION

[0049] 图1为现有技术的CGN设备集中式部署图; [0049] FIG. 1 is a prior art centralized deployment FIG CGN device;

[0050] 图2为现有技术的CGN设备的分布式单元的结构示意图; Distributed structural units [0050] FIG. 2 CGN prior art device is a schematic diagram;

[0051] 图3为本发明实施例的CGN设备的示意图; [0051] FIG. 3 is a schematic embodiment of the apparatus of the embodiment CGN present invention;

[0052] 图4为本发明实施例一的热备份系统的示意图; [0052] FIG. 4 is a schematic diagram of a hot backup system of the embodiment of the present invention;

[0053] 图5为本发明实施例一的热备份方法的流程图; [0053] FIG 5 is a flowchart hot backup method according to one embodiment of the present invention;

[0054] 图6为本发明实施例二的热备份系统的示意图; [0054] FIG. 6 is a schematic view of hot backup system according to a second embodiment of the present invention;

[0055] 图7为本发明实施例二的热备份方法的流程图。 [0055] FIG. 7 is a flowchart of hot backup method according to a second embodiment of the present invention.

具体实施方式 detailed description

[0056] 为使本发明的目的、技术方案和优点更加清楚明白,下文中将结合附图对本发明的实施例进行详细说明。 [0056] To make the objectives, technical solutions, and advantages of the present invention will become apparent from, the accompanying drawings hereinafter in conjunction with embodiments of the present invention will be described in detail. 需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互任意组合。 Incidentally, in the case of no conflict, embodiments and features of the embodiments of the present application may be arbitrarily combined with each other.

[0057] 为了实现分布式CGN设备之间的双机热备份,本发明实施例提供了一种分布式热备份实例,该热备份实例是一种配置生成的分布式软件对象,可以在一台CGN设备中配置多个该热备份实例。 [0057] In order to achieve hot backup distributed between CGN device, embodiments of the present invention provides a distributed hot backup instance, the hot backup software object instance is a distributed configuration generated, can be a CGN device in the plurality of hot backup instance. 该热备份实例的功能可以包括:检测业务处理单元及报文转发单元故障;备份业务数据,统计业务数据备份信息;控制管理热备状态等。 Examples of the hot backup function may include: a service processing unit and detecting packet forwarding unit failure; backup service data, statistical data backup service information; Control Manager hot standby status.

[0058] 所述热备份实例可以包括: [0058] Examples of the hot spare may include:

[0059] 备份实例客户端,驻留在CGN设备的关联业务处理单元中,负责与备份实例服务端的通信,通知业务处理模块状态切换,其进一步包括:数据备份模块,用于控制业务数据备份; [0059] Client Backup example, reside in the service processing unit CGN associated apparatus, is responsible for communication with the end of backup service instance, state switching module notifies the service processing, further comprising: a data backup module, for controlling data backup service;

[0060] 备份实例服务端,驻留在CGN设备的主控管理单元中,用于管理备份实例客户端, 实现主备状态控制和数据备份,其可以进一步包括: [0060] Examples of the backup server, resides in the master management unit CGN apparatus for managing the backup client instance, to achieve control and standby data backup status, which may further comprise:

[0061] 故障检测模块,用于检测设备故障或链接状态;所述设备故障包括但不限于业务处理单元故障,报文转发单元故障;所述链接状态包括其与对等设备建立的状态选举链路; [0061] The fault detection module for detecting a link status failure or device; the device failure including but not limited service processing unit fails, a failure message forwarding unit; the link status includes a state with the peer link establishment election road;

[0062] 逻辑控制模块,用于根据故障检测模块的故障事件来控制主备状态切换,进而通知备份实例客户端来控制业务数据处理和备份。 [0062] The logic control module for controlling the standby state of the switching module according to the fault the fault detection event, and then to notify the client instance backup data processing and control traffic backup.

[0063] 本发明实施例CGN设备上装载有上述的热备份实例,如图3所示,本实施例的CGN 设备中包括:主控管理单元和多个业务处理单元,主控管理单元中装载有所述备份实例服务端和一备份实例客户端,每一个业务处理单元上都装载有一所述备份实例客户端,主控管理单元和各个业务处理单元之间建立有用户备份通道。 [0063] Example embodiments of the present invention described above is loaded CGN instance hot backup device 3, CGN apparatus according to the present embodiment comprises: a master management unit and a plurality of service processing units, the master management unit loaded there are instances of the backup server and a client backup instance, the service processing units each loaded with a backup instance the client, establish a user channel between the master backup management unit and each service processing unit.

[0064] 主用CGN设备的主控管理单元,用于将用户信息发送给备用CGN设备进行备份; [0064] CGN active main equipment management unit, configured to send the user information to the standby CGN device for backup;

[0065] 主用CGN设备的业务处理单元,用于接收到备用CGN设备的备份通知后,将所述用户下的所有会话信息发送给备用CGN设备进行备份。 [0065] CGN primary service processing unit device, after receiving notification to the standby CGN backup device, all the user session information is sent to the backup CGN device for backup.

[0066] 图4为本发明实施例一的热备份系统的示意图,如图4所示,主用CGN设备和备用CGN设备建立有备份通道,具体地,主用CGN设备的主控管理单元和备用CGN设备的主控管理单元之间建立有用户备份通道;主用CGN设备的业务处理单元和备用CGN设备的业务处理单元两两之间建立有会话备份通道。 [0066] FIG. 4 is a schematic diagram of a hot backup system of the embodiment of the present invention, the primary device and the secondary CGN CGN device establishing backup channel shown in FIG. 4, in particular, the primary master CGN device management unit, and establish a user channel between the master backup CGN backup device management unit; service processing unit with the service processing unit of the main equipment and standby CGN CGN devices establish a session between any two backup channel.

[0067] 图5为本发明实施例一的热备份方法的流程图,如图5所示,本实施例的方法包括下面步骤: [0067] FIG 5 is a flowchart hot backup method according to one embodiment of the present invention, shown in Figure 5, the method according to the present embodiment includes the following steps:

[0068] S10、主用CGN设备的主控管理单元将用户信息发送给备用CGN设备进行备份; [0068] S10, the main MPU CGN device management unit transmits the user information to the standby CGN device for backup;

[0069] S20、备用CGN设备的主控管理单元接收到用户信息后发送给其所有业务处理单元; [0069] S20, the standby master CGN device management unit after receiving the user information to all its service processing unit;

[0070] S30、备用CGN设备的业务处理单元再将各自接收到的用户信息通知给主用CGN设备对应的业务处理单元; [0070] S30, the standby service processing unit CGN device then each received user information to the master CGN device corresponding service processing unit;

[0071] S40、主用CGN设备的业务处理单元各自接收到备用CGN设备的用户信息通知后, 将所述用户下的所有会话信息发送给备用CGN设备进行备份。 After [0071] S40, the primary service processing unit CGN device receives the user information notification each CGN backup device, all the user session information is sent to the backup CGN device for backup.

[0072] 下面结合图4对本发明实施例一的方法进行详细的说明,本实施例可以包括下面步骤: A method of embodiments described in detail [0072] below with reference to FIG. 4 of the embodiment of the present invention, the present embodiment may include the following steps:

[0073] 步骤101、在主用CGN设备和备用CGN设备的备份实例上配置通道链接参数,用以建立备份通道; [0073] Step 101, the channel link configuration parameters on the primary backup instance CGN CGN device and the secondary devices to establish a backup path;

[0074] 所述链接参数可以是TCP(Transmission Control Protocol,传输控制协议)所需的IP地址和端口,可以配置多个参数,以增加链接数,从而提高备份带宽。 [0074] The link parameters may be required IP address and port of the TCP (Transmission Control Protocol, Transmission Control Protocol), a plurality of parameters can be configured to increase the number of links, thereby increasing the bandwidth of the backup.

[0075] 步骤102、主用CGN设备的主控管理单元和备用CGN设备的主控管理单元之间,通过备份实例客户端使用通道链接参数建立起用户备份通道; [0075] Step 102, the main control unit between the master management unit managing the master device and the backup CGN CGN device using a channel link parameters established by the user client backup instance backup channel;

[0076] 步骤103、主用CGN设备的业务处理单元和备用CGN设备的业务处理单元两两之间,通过备份实例客户端使用通道链接参数建立起会话备份通道; [0076] Step 103, the service processing unit with the service processing unit of the main and standby CGN CGN device between any two devices, using channel link parameters to establish a session the client backup instance backup channel;

[0077] 步骤104、主用CGN设备的主控管理单元通过备份实例客户端向备用设备备份用户信息(即将用户信息发送给备用设备),备用设备的主控管理单元接收用户信息并同步给实例所关联各业务处理单元; [0077] Step 104, the master apparatus with the master management unit CGN backup example client device backup to the backup user information (user information to be sent to the backup device), the standby main control apparatus receives the user information management unit, and to synchronize Examples each associated service processing unit;

[0078] 所述用户信息进一步包括: [0078] The user information further comprises:

[0079] 对于DS-Lite (轻量级双栈隧道)网络地址转换技术,用户信息包括但不限于: IPv6前缀及子网前缀长度、隧道信息、VPN(Virtual Private Network,虚拟专用网络)信息; [0079] including but not limited to DS-Lite (lightweight dual stack tunnel) network address translation technology, user information: IPv6 subnet prefix and the prefix length, tunnel information, VPN (Virtual Private Network, VPN) information;

[0080] 对于NAT64,用户信息包括但不限于:IPv6前缀及子网前缀长度、NAT64前缀、VPN fn息; [0080] For NAT64, the user information including, but not limited to: IPv6 subnet prefix and the prefix length, NAT64 prefix, VPN fn interest;

[0081] 对于ΝΑΊ~44,用户信息包括但不限于:ΙΡν4地址、VPN信息; [0081] For ΝΑΊ ~ 44, the user information including, but not limited to: ΙΡν4 address, VPN information;

[0082] 所述隧道信息至少包括用户IPv6地址、隧道目的IPv6地址,还可以以包括但不限于:隧道MTU(Maximum Transmission Unit,最大传输单元)、隧道类型(GRE (Generic Routing Encapsulation,通用路由封装)、普通4_in_6(IPv4-in_IPv6 隧道), IPv6IPSEC(IP 安全性)等)。 [0082] The tunnel information comprises at least a user IPv6 address, the tunnel destination IPv6 address further may include but are not limited to: the tunnel MTU (Maximum Transmission Unit, MTU), the tunnel type (GRE (Generic Routing Encapsulation, GRE ), ordinary 4_in_6 (IPv4-in_IPv6 tunnel), IPv6IPSEC (IP security), etc.).

[0083] 步骤105、备用设备的业务处理单元接收到用户信息,并通过会话备份通道通知主用设备的业务处理单元; [0083] Step 105, the standby service processing unit to the user device receives the information and notifies the service processing unit of the host device by using the session backup channel;

[0084] 步骤106、主用设备的业务处理单元接收到备用设备的用户信息通知,则备份该用户下的所有会话信息; [0084] Step 106, the service processing unit receiving the master device to the backup user information notifying apparatus, all of the user session information in the backup;

[0085] 所述会话信息进一步包括: [0085] The session information further comprises:

[0086] PCP ECHO(PCP(Port Control Protocol,端口控制协议)响应值)信息、网络地址转换会话信息、ALG(Application Level (Gateway,应用层网关)信息,其中, [0086] PCP ECHO (PCP (Port Control Protocol, Port Control Protocol) response value) information, session information network address translation, ALG (Application Level (Gateway, application layer gateway) information, wherein,

[0087] PCP ECHO是PCP中PCP服务端向PCP客户端回应的序列值,该值在PCP服务端会定时自动增加,PCP客户端会动态更新并保存该值,当发现本地的值大于服务端的ECHO值时,则认为服务端发生过故障,则重新进入故障恢复流程。 [0087] PCP ECHO is PCP in the PCP server sequence value response to the PCP client, this value is periodically increased automatically PCP server, PCP client dynamically update and save this value, as found in the local value is greater than the service side when ECHO value is considered the server failure occurred, then re-enter the recovery process.

[0088] 网络地址转换会话信息,包括:私网IPv4地址、公网IPv4地址、端口或端口块信息、协议类型,及其所属用户标识信息; [0088] Network address translation session information, comprising: a private IPv4 address, public IPv4 address, port, or the port block information, protocol type, and the user identification information belongs;

[0089] ALG(Application Level (Gateway,应用层网关)信息,包括:ALG控制信息(例如TCP序列号偏移信息)、ALG协议类型,及其所属用户标识信息。 [0089] ALG (Application Level (Gateway, application layer gateway) information, comprising: ALG control information (e.g., TCP sequence number offset information), ALG protocol type, and their respective user identification information.

[0090] 所述用户标识信息可以是用户信息,也可以是用户唯一标识或关键字; [0090] The user information may be user identification information may be a user identifier or unique key;

[0091] 步骤107、备用设备的业务处理单元接收到主用设备的会话信息。 [0091] Step 107, the standby service processing unit receiving the session information apparatus master device.

[0092] 通过本实施例的方法对于CGN设备能够实现双机热备份。 [0092] by the method of the present embodiment can be realized CGN device for hot backup.

[0093] 图6为本发明实施例二的热备份系统的示意图,如图6所示,主用CGN设备和备用CGN设备可以分别装置两个上述的热备份实例,具体地,可以在主用设备配置两个备份实例,一个配置为主用备份实例,关联一部分业务处理单元和物理接口,另一个配置为备用备份实例,关联另一部分业务处理单元和物理接口;可以在备用设备配置两个备份实例,一个配置为备用备份实例,关联一部分业务处理单元和物理接口,另一个配置为主用备份实例, 关联另一部分业务处理单元和物理接口。 [0093] FIG. 6 is a schematic view of hot backup system according to a second embodiment of the present invention, shown in Figure 6, the master device and the backup CGN CGN device above two means may each instance hot backup, in particular, can be used in the main two backup device configuration example, a configuration with a main backup instance, a portion of the associated physical interface and a service processing unit and the other as a backup alternate example, associated with another part of the business processing unit and a physical interface; can be configured in two alternate backup apparatus example, to configure a backup alternate example, a portion of the associated physical interface and a service processing unit, configured as an active backup another example, another part of the business associated with the processing unit and the physical interface.

[0094] 两组备份实例逻辑上独立运行,主备切换互不影响,使两台设备均能同时处理业务,从而实现负载分担。 Independent running [0094] Examples of two logic backup, the switchover independently of each other, so that both devices can simultaneously handle traffic, thereby achieving load balancing.

[0095] 图7为本发明实施例二的热备份方法的流程图,如图7所示,包括下面步骤: [0095] FIG. 7 is a flowchart of hot backup method according to a second embodiment of the present invention, shown in Figure 7, comprising the following steps:

[0096] 步骤601、CGN设备1配置一个主用备份实例,针对本实例,CGN设备1为主用设备; [0096] Step 601, CGN device 1 is configured with a primary backup instance, for the present example, the CGN device 1 is the master;

[0097] 步骤602、CGN设备2配置一个备用备份实例,针对本实例,CGN设备2为备用设备; [0097] Step 602, CGN device 2 is arranged a spare backup instance, for the present example, the CGN device 2 as a backup device;

[0098] 步骤603、CGN设备1和CGN设备2的主控管理单元的备份实例客户端之间建立会话备份通道; [0098] Step 603, establishing a session between the backup tunnel client backup Examples 1 and CGN CGN device management apparatus main unit 2;

[0099] 步骤604、CGN设备1和CGN设备2的各个业务处理单元的备份实例客户端之间建立会话备份通道; [0099] Step 604, CGN CGN apparatus 1 and 2 of each service processing apparatus to establish a session between the backup tunnel backup instance client unit;

[0100] 步骤605、CGN设备1的主控管理单元将生成的备份实例关联的用户信息同步给各个业务处理单元并保存; [0100] Step 605, the user information management unit main backup instance CGN device 1 will generate synchronization associated to each service processing unit and stored;

[0101] 步骤606、CGN设备1的主控管理单元将生成的备份实例关联的用户信息备份给设备2的主控管理单元并保存; [0101] Step 606, the user information backup master instance management unit will generate CGN device 1 associated to the backup device management unit 2 and main storage;

[0102] 步骤607、CGN设备2的主控管理单元将备份的用户信息同步给各个业务处理单元并保存; [0102] Step 607, the user information management unit main CGN device 2 is synchronized to the backup and stores each service processing unit;

[0103] 步骤608、CGN设备2的各个业务处理单元将用户信息通知给CGN设备1的对应的业务处理单元; [0103] Step 608, CGN device 2 of each service processing unit of the user information to the CGN device corresponding service processing unit 1;

[0104] 步骤609、CGN设备1的各个业务处理单元将用户下的所有会话信息备份给CGN设备2的业务处理单元。 [0104] Step 609, CGN device 1 of each service processing unit in the user session information for all backup service processing unit to the CGN device 2.

[0105] 上述步骤为配置一个备份实例下的备份流程,本发明可以再配置另一个备份实例,针对设备1配置为备用备份实例,针对设备2配置为主用备份实例,工作流程同上所述, 两组备份实例互不影响,独立运行,解决了双机负载分担的问题。 [0105] The steps of a configuration backup a backup process under example, the present invention can further configure backup another example, for example as the alternate backup apparatus 1, mainly configured with a backup device 2 for instance, the workflow supra, two sets of backup instance independently of each other, operate independently, solve the problem of dual load-sharing.

[0106] 当然,本实施例的CGN设备也可以配置多个所述热备份实例,CGN设备1和CGN设备2可以如图6配置成互为主备关系,同时也再可以将CGN设备1和CGN设备3配置成主备关系或互为主备关系。 [0106] Of course, the CGN device according to the present embodiment may also be multiple instances of the hot standby, CGN CGN device 1 and device 2 in FIG. 6 may be configured to mutual backup mode, and then also the device 1 and may be CGN 3 CGN device configured in master and slave relationship or a mutual backup.

[0107] 综上所述,通过本发明可以实现三层网络环境下分布式CGN设备的双机备份以及负载分担。 [0107] In summary, a three-layer network environment can be achieved under distributed CGN double backup and load sharing by the device of the present invention.

[0108] 本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件完成,所述程序可以存储于计算机可读存储介质中,如只读存储器、磁盘或光盘等。 [0108] Those of ordinary skill in the art will be appreciated that the above-described method may be all or part of the steps by a program instructing relevant hardware is completed, the program may be stored in a computer-readable storage medium, such as read only memory, etc., magnetic or optical disk. 可选地,上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。 Alternatively, all or part of the steps of the above-described embodiments may be implemented using one or more integrated circuits. 相应地,上述实施例中的各模块/单元可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。 Accordingly, each module / unit in the above-described embodiments may be implemented in the form of hardware, software functional modules may also be implemented. 本发明不限制于任何特定形式的硬件和软件的结合。 The present invention is not limited to any specific combination of hardware and software form.

[0109] 以上仅为本发明的优选实施例,当然,本发明还可有其他多种实施例,在不背离本发明精神及其实质的情况下,熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形,但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 [0109] The above description is only preferred embodiments of the present invention, of course, the present invention may have various other embodiments without departing from the spirit and the essence of the present invention, those skilled in the art when the present invention may be make various changes and modifications, but these modifications and variations should fall within the scope of the appended claims.

Claims (11)

  1. 1. 一种热备份方法,包括:第一运营商级网络地址转换(CGN)设备的主控管理单元将第一用户信息发送给第二CGN设备进行备份;第一CGN设备的第一业务处理单元接收到第二CGN设备的备份通知后,将所述第一用户下的所有会话信息发送给第二CGN设备进行备份。 A hot backup method, comprising: a first stage carrier network address translation (CGN) master device management unit transmits the first information to the second user CGN device for backup; a first service processing device of a first CGN after the backup unit receives the second notification CGN device will send all information in the first session to the second user CGN device for backup.
  2. 2.如权利要求1所述的方法,其特征在于:第一 CGN设备的主控管理单元将第一用户信息发送给第二CGN设备进行备份的过程中,还包括:第一CGN设备的主控管理单元将第一用户信息同步给第一CGN设备的第一业务处理单兀。 2. The method according to claim 1, wherein: a first master CGN device management unit transmits the first information to the second user CGN device backup process, further comprising: a first master device CGN a first control unit managing the user information to the first synchronization device CGN Wu first service processing unit.
  3. 3.如权利要求1所述的方法,其特征在于:如第一CGN设备采用轻量级双栈隧道(DS-Lite)网络地址转换技术进行网络地址转换,则第一用户信息包括:IPv6前缀、子网前缀长度、隧道信息和虚拟专用网络信息,所述隧道信息至少包括用户IPv6地址和隧道目的IPv6地址;如第一CGN设备采用IPv6到IPv4的网络地址转换技术(NAT64)进行报文转换,则第一用户信息包括:IPv6前缀及子网前缀长度、NAT64前缀和虚拟专用网络信息;如第一CGN设备采用IPv4到IPv4的网络地址转换技术(NAT44)进行报文转换,则第一用户信息包括:IPv4地址和虚拟专用网络信息。 3. The method according to claim 1, characterized in that: The first use of the lightweight dual stack tunnel CGN device (DS-Lite) network address translation, network address translation technology, the first user information comprises: IPv6 prefix , subnet prefix length, tunnel information, and virtual private network information, the user information includes at least the tunnel IPv6 address, and destination IPv6 address of the tunnel; CGN device such as a network address of a first IPv6 to IPv4 transition technology (the NAT64) for packet conversion , then the first user information comprises: IPv6 subnet prefix and the prefix length, the NAT64 prefix and virtual private network information; CGN equipment used as in the first IPv4 address to the IPv4 network conversion technology (NAT44) for packet conversion, the first user information includes: IPv4 address and virtual private network information.
  4. 4.如权利要求1所述的方法,其特征在于:所述会话信息包括:端口控制协议响应值信息、网络地址转换会话信息和应用层网关(ALG)信息,其中, 所述网络地址转换会话信息包括:私网IPv4地址、公网IPv4地址、端口或端口块信息、 协议类型,及其所属用户标识信息;所述ALG信息包括:ALG控制信息、ALG协议类型,及其所属用户标识信息。 4. The method according to claim 1, wherein: said session information comprises: a port control protocol response value information, session information and network address translation Application Layer Gateway (ALG) information, wherein said network address translation session information includes: a private IPv4 address, public IPv4 address, port, or the port block information, protocol type, and the user identification information belongs; ALG said information comprising: a control information ALG, ALG protocol type, and their respective user identification information.
  5. 5.如权利要求1-4任一项所述的方法,其特征在于:还包括:第一CGN设备的主控管理单元接收到第三CGN设备的第二用户信息后,将第二用户信息同步给第二业务处理单元;第一CGN设备的第二业务处理单元接收到第二用户信息后,向第三CGN设备发送备份通知,其中,第三CGN设备与第二CGN设备为同一设备,或第三CGN设备与第二CGN设备为不同的设备。 5. The method of any one of claims 1 to 4, characterized in that: further comprising: a first CGN device after the master management unit of the second user receives the information of the third CGN device, the second user information synchronization with the second service processing unit; CGN device after the first second service processing unit receiving the second user information, send a notification to the third backup CGN device, wherein the third CGN CGN device and the second device is the same device, CGN device and the second or third CGN device for different devices.
  6. 6. 一种分布式运营商级网络地址转换(CGN)设备,包括:主控管理单元和第一业务处理单元,所述主控管理单元与一指定CGN设备之间建立有备份通道,第一业务处理单元与所述指定CGN设备之间建立有会话备份通道,其中,所述主控管理单元,用于将第一用户信息发送给指定CGN设备进行备份; 第一业务处理单元,接收到所述指定CGN设备的备份通知后,将所述第一用户下的所有会话信息发送给所述指定CGN设备进行备份。 A carrier class distributed network address translation (CGN) apparatus, comprising: a first master unit and a service processing management unit, the master backup path established between the management unit and a specified CGN device, a first the designated service processing unit to establish a session between the backup tunnel CGN device, wherein the master management unit of the first user information to designated backup CGN device; a first service processing unit, to receive the later designated backup notification CGN device, all under the first session information is sent to the user specified CGN device for backup.
  7. 7.如权利要求6所述的CGN设备,其特征在于:所述主控管理单元,将第一用户信息发送给所述指定CGN设备进行备份的过程中还用于,通过预先建立的用户备份通道将第一用户信息同步给第一业务处理单元。 7. CGN device according to claim 6, wherein: the master management unit transmits the information to the first user specified CGN device backup process is also used by a user pre-established backup synchronizing the first user information channel to the first service processing unit.
  8. 8.如权利要求6所述的CGN设备,其特征在于:如所述CGN设备采用轻量级双栈隧道(DS-Lite)网络地址转换技术进行网络地址转换,则第一用户信息包括:IPv6前缀、子网前缀长度、隧道目的IPv6地址和虚拟专用网络信息;如所述CGN设备采用IPv6到IPv4的网络地址转换技术(NAT64)进行报文转换,则第一用户信息包括:IPv6前缀及子网前缀长度、NAT64前缀和虚拟专用网络信息;如所述CGN设备采用IPv4到IPv4的网络地址转换技术(NAT44)进行报文转换,则第一用户信息包括:IPv4地址和虚拟专用网络信息。 8. CGN device according to claim 6, wherein: The use of the lightweight dual stack tunnel CGN device (DS-Lite) network address translation, network address translation technology, the first user information comprises: IPv6 prefix, subnet prefix length, and tunnel destination IPv6 address information of the virtual private networks; CGN device as a network address of the IPv6 to IPv4 transition technology (the NAT64) for packet conversion, the first user information comprises: IPv6 prefix and subcombinations network prefix length, the prefix and the NAT64 virtual private network information; CGN the device uses the IPv4 address to the IPv4 network conversion technology (NAT44) for packet conversion, the first user information comprises: IPv4 addresses and virtual private network information.
  9. 9.如权利要求6所述的CGN设备,其特征在于:所述会话信息包括: PCP响应值信息、网络地址转换会话信息和应用层网关(ALG)信息,其中,所述网络地址转换会话信息包括:私网IPv4地址、公网IPv4地址、端口或端口块信息、 协议类型,及其所属用户标识信息;所述ALG信息包括:ALG控制信息、ALG协议类型,及其所属用户标识信息。 9. CGN device according to claim 6, wherein: the session information comprises: in response to the value of the PCP information, session information and network address translation Application Layer Gateway (ALG) information, wherein said network address translation session information comprising: a private IPv4 address, public IPv4 address, port, or the port block information, protocol type, and the user identification information belongs; ALG said information comprising: a control information ALG, ALG protocol type, and their respective user identification information.
  10. 10.如权利要求6-9任一项所述的CGN设备,其特征在于:还包括第二业务处理单元, 所述主控管理单元,还用于接收到第三CGN设备的第二用户信息后,将第二用户信息同步给第二业务处理单元;第二业务处理单元,用于接收到第二用户信息后,向第三CGN设备发送备份通知,其中,第三CGN设备与第二CGN设备为同一设备,或第三CGN设备与第二CGN设备为不同的设备。 10. CGN device according to any one of claims 6-9, characterized in that: further comprising a second service processing unit, the master management unit further receives a second user information to the third device CGN after the second user to synchronize the second information service processing unit; a second service processing unit, for receiving the second user information, send a notification to the third backup CGN device, wherein the third device and the second CGN CGN equipment for the same device or a second device and a third CGN CGN device for different devices.
  11. 11. 一种的热备份系统,包括:第一运营商级网络地址转换(CGN)设备和第二CGN设备,其中,第一CGN设备的主控管理单元和第二CGN设备的主控管理单元之间建立有备份通道, 第一CGN设备的第一业务处理单元与第二CGN设备的第一业务处理单元之间建立有会话备份通道,其中,第一CGN设备的主控管理单元,用于将第一用户信息发送给第二CGN设备进行备份; 第二CGN设备的主控管理单元,用于接收到第一用户信息后,通过预先建立的用户备份通道将第一用户信息同步给第二CGN设备的第一业务处理单元;第二CGN设备的第一业务处理单元,用于接收到第一用户信息后,通知对应的第一CGN 设备的第一业务处理单元;第一CGN设备的第一业务处理单元,用于接收到通知后,将所述第一用户下的所有会话信息发送给对应的第二CGN设备的第一业务处理单元进行备份。 A hot backup system, comprising: a first stage carrier network address translation (CGN) CGN device and a second device, wherein the first master CGN device management unit and a second master device management unit CGN channel established between the backup, a backup channel to establish a session between the first service of the first service of the first device CGN CGN device processing unit and the second processing unit, wherein the first master CGN device management unit configured to sending the first information to the second user CGN device for backup; CGN device after the second master management unit, configured to receive first user information, the user pre-established by the first backup channel to the second user information synchronization CGN device a first service processing unit; a first service processing unit of the second CGN device, after receiving the first user information, the first service of the first notification processing unit corresponding to the CGN device; a first device a first CGN a service processing unit after the first service processing unit, for receiving the notification, to send all the session information corresponding to the first user to a second CGN device for backup.
CN 201110448541 2011-12-28 2011-12-28 Hot backup method and system as well as CGN (carrier grade network address translation (NAT)) equipment CN102447703A (en)

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