CN102098222B - Application service message forwarding method and forwarding node adopting multi-protocol label switching (MPLS) technology - Google Patents

Application service message forwarding method and forwarding node adopting multi-protocol label switching (MPLS) technology Download PDF

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CN102098222B
CN102098222B CN 201110035009 CN201110035009A CN102098222B CN 102098222 B CN102098222 B CN 102098222B CN 201110035009 CN201110035009 CN 201110035009 CN 201110035009 A CN201110035009 A CN 201110035009A CN 102098222 B CN102098222 B CN 102098222B
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node
service
forwarding
server
packet
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CN102098222A (en
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王瑾
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/54Store-and-forward switching systems
    • H04L12/56Packet switching systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/32Network-specific arrangements or communication protocols supporting networked applications for scheduling or organising the servicing of application requests, e.g. requests for application data transmissions involving the analysis and optimisation of the required network resources
    • H04L67/327Network-specific arrangements or communication protocols supporting networked applications for scheduling or organising the servicing of application requests, e.g. requests for application data transmissions involving the analysis and optimisation of the required network resources whereby the routing of a service request to a node providing the service depends on the content or context of the request, e.g. profile, connectivity status, payload or application type
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/25Network arrangements or network protocols for addressing or naming mapping of addresses of the same type; address translation
    • H04L61/2503Internet protocol [IP] address translation
    • H04L61/2507Internet protocol [IP] address translation translating between special types of IP addresses
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/10Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network
    • H04L67/1002Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers, e.g. load balancing

Abstract

本发明涉及一种利用MPLS技术转发应用服务报文方法和转发节点,该方法包括:转发节点接收报文;所述转发节点对接收的报文进行多协议标签交换(MPLS)处理,其中,当前节点为倒数第二跳的中间节点(Transit)时,将所述报文中的原标签交换为相应服务器组虚标签;当前节点为出节点(Egress PE)时,弹出接收的报文中的标签,其中,不同的服务器组对应不同的服务器组虚标签;所述转发节点转发处理后的报文,其中,当前节点为出节点时,根据所述服务器组虚标签对应的服务器组信息进行报文转发。 The present invention relates to a technique MPLS packet forwarding method of application services and forwarding node, the method comprising: receiving a packet forwarding node; the node forwarding packets received Multiprotocol Label Switching (MPLS) process, wherein the current when the intermediate node (Transit) is the penultimate hop node of the original packet corresponding label switched virtual server group label; the label node (Egress PE), pop-up message received in the current node wherein, different servers of a server group corresponding to the virtual tag; said packet forwarding node forwarding after processing in which the current node is a node, a message server according to the group information corresponding to the virtual tag server group forwarding. 本发明可实现内容交换的快速定向转发。 The present invention can realize rapid directional forwarding content exchange.

Description

利用MPLS技术转发应用服务报文方法和转发节点 The use of MPLS technology application service packet forwarding method and the forwarding node

技术领域 FIELD

[0001] 本发明涉及MPLS (Mult1-Protocol Label Switching,多协议标签交换)技术,尤其是一种利用MPLS技术转发应用服务报文方法和转发节点。 [0001] The present invention relates to MPLS (Mult1-Protocol Label Switching, MPLS) technology, more particularly to a technique by using the MPLS packet forwarding method of application services and forwarding node.

背景技术 Background technique

[0002] PTN(分组传送网,Packet Transport Network)承载网是用于承载多业务并高速转发的,在未来网络扁平化的趋势下,业务的端到端路径有可能缩短。 [0002] PTN (packet transport network, Packet Transport Network) bearer service network is used to carry multiple high-speed forwarding and, in the future trend of flat network, end to end traffic path may be shortened. 随着IPv6进程的加速和前景的明朗化,中国电信宣布2014年开始全面支持V6网络。 With the acceleration of the process and prospects of IPv6 clarified, China Telecom announced 2014 full support V6 network. 未来网络扁平化趋势和云计算等日益迫切的需求对网络设备的计算负载能力提出了更高要求。 Future network flattening increasingly urgent demand trends and cloud computing to calculate the load capacity of the network equipment put forward higher requirements.

[0003]随着 MPLS-TP (Transport Profile for Mult1-Protocol Label Switching,传送面多协议标签交换)技术的发展和TMPLS (Transport Mult1-Protocol LabelSwitching,传送面多协议标签交换)与MPLS (Mult1-Protocol Label Switching,多协议标签交换)的融合趋势,此领域中衍生出越来越多的应用服务技术,MPLS-TP独立于第二和第三层协议,是现有路由和交换协议的接口,而应用服务属于应用层,MPLS-TP可以为应用层技术提供数据转发的目标、路由和转发交换能力。 [0003] With the development of MPLS-TP (Transport Profile for Mult1-Protocol Label Switching, MPLS transport surface) technology and TMPLS (Transport Mult1-Protocol LabelSwitching, conveyor surface Multiprotocol Label Switching) and MPLS (Mult1-Protocol label switching, MPLS) of convergence, this area derived more application services technology, MPLS-TP is independent of the second and third layers protocols, interfaces to existing routing and switching protocols, and application service is an application layer, MPLS-TP can provide objective data forwarding, routing and switching capabilities to forward the application layer technology.

[0004] MPLS-TP(Transport Profile for Mult1-Protocol Label Switching,传送多协议标签交换)是一种面向连接的分组交换网络技术,利用MPLS标签交换路径,省去MPLS信令和IP复杂功能,同时支持多业务承载,独立于客户层和控制面,并可运行于各种物理层技术,具有强大的传送能力(体现在QOS(Quality of Service)、0AM(Operat1nAdministrat1n and Maintenance)和可靠性等方面)。 [0004] MPLS-TP (Transport Profile for Mult1-Protocol Label Switching, Transport Multi-Protocol Label Switching) is a technology-oriented packet switched network connection, by using the MPLS label switched path, eliminating the need for complex functions MPLS signaling and IP, while multi-service bearer is independent of the client layer and the control plane, and run on a variety of physical layer, a strong transport capabilities (embodied in the QOS (Quality of service), 0AM (Operat1nAdministrat1n and Maintenance) and reliability) . 针对ITU-T(国际电信联盟远程通信标准化组织)传送需求可扩展IETF MPLS架构实现,由IETF/ITU-T JWT工作组负责标准制定,命名为MPLS-Transport Profile。 Demand for transmission ITU-T (International Telecommunication Union Telecommunication Standardization Organization) IETF MPLS architecture for scalable, / ITU-T JWT working group responsible for the standard developed by the IETF, named MPLS-Transport Profile.

[0005] NAT-PT (网络地址转换-协议转换,Network AddressTranslat1n-ProtocoITransIat1n)技术作用于IPV4和IPV6网络边缘的设备上,所有的地址转换过程都在该设备上实现,对IPV4和IPV6网络来说是透明的,即用户不必改变目前的IPV4网络中主机的配置就可实现IPV6网络与IPV4网络的通信。 [0005] NAT-PT (Network Address Translation - Protocol conversion, Network AddressTranslat1n-ProtocoITransIat1n) technology effect, all of the address translation process is implemented on the device to the network edge device IPV4 and IPV6, IPV4 and IPV6 networks of is transparent, i.e., the user does not change the configuration of the current IPV4 network host can communicate IPV6 network and IPV4 network.

[0006] 内容交换通过采用在内容上配置的虚拟IP地址(Virtual IP, VIP)的概念,用户能连接到该点,而由内容交换来决定向适当的服务器进行请求,或处理负载平衡。 Concepts [0006] By using the content exchange content arranged on the virtual IP address (Virtual IP, VIP), the user can connect to that point, and is determined by the exchange request to the appropriate content server, or the load balancing process. 传统的内容交换与负载均衡的技术如图1所示。 Conventional content exchange with load balancing technique shown in Fig.

[0007] 但是这种解决方案的缺陷也是显而易见的,该技术只能用于纯IP环境,通过对虚地址的替换处理,达到负载均衡的目的。 [0007] However, disadvantage of this solution is obvious, this technique can only be used in a pure IP environment, by replacing the virtual address of the process, to achieve load balancing purposes. IP转发具有依赖整网路由、查询路由表、转发前缀长等不利因素。 IP forwarding with a dependent by the entire network, routing table, forwarding prefix length and other negative factors.

发明内容 SUMMARY

[0008] 本发明提供一种利用MPLS技术转发应用服务报文方法和转发节点,以解决内容交换无法快速定向转发的问题。 [0008] The present invention provides a technique utilizing MPLS packet forwarding method and application services forwarding node to address the content exchanged can not fast forward orientation. [0009] 为解决以上技术问题,本发明提供了一种利用MPLS技术的转发应用服务报文方法,该方法包括: [0009] In order to solve the above technical problem, the present invention provides a packet forwarding application service method using MPLS technology, the method comprising:

[0010] 转发节点接收报文; [0010] forwarding node receives packets;

[0011] 所述转发节点对接收的报文进行多协议标签交换(MPLS)处理,其中,当前节点为倒数第二跳的中间节点(Transit)时,将所述报文中的原标签交换为相应服务器组虚标签;当前节点为出节点(Egress PE)时,弹出接收的报文中的标签,其中,不同的服务器组对应不同的服务器组虚标签; [0011] When the node forwarding packets received Multiprotocol Label Switching (MPLS) treatment, wherein, the current node is the penultimate hop intermediate node (Transit), the original label switching packet for the respective server virtual tag group; the current node is the egress node (egress PE), pop-up message received label, wherein the different sets correspond to different servers of the server virtual tag group;

[0012] 所述转发节点转发处理后的报文,其中,当前节点为出节点时,根据所述服务器组虚标签对应的服务器组信息进行报文转发。 When [0012] the packet forwarding node forwarding the processed, wherein the current node is a node, the server forwards the message according to the group information corresponding to the virtual tag server group.

[0013] 进一步地,接收报文的步骤前,该方法还包括,为所述转发节点分配标签,并创建业务伪线,且不同的业务伪线绑定不同的业务类型; [0013] Further, before the step of receiving the message, the method further comprises, for said forwarding node distribution labels, and create a business pseudo wire, PW and different business binding different service types;

[0014] 所述转发节点为入节点时,其接收所述报文后,处理所述报文前,对接收的报文进行解析,根据接收的报文中的业务信息判断对应的业务是否绑定业务伪线,以及绑定业务伪线时业务开关是否使能;未绑定业务伪线或绑定业务伪线但业务开关未使能时,对接收的报文进行普通MPLS隧道处理及转发;否则根据所述业务信息选择相应的业务伪线,确定下一跳标签。 [0014] The forwarding node is the node which receives the packet after the processing of the front packet, received packets is parsed according to whether the service information tied received packet is determined corresponding service PW given service, and the service when binding pseudo wire service switch is enabled; unbound pseudo wire service, or bundled services, but pseudo wire service switch is not enabled, the received packets subjected to ordinary handling and forwarding the MPLS tunnel ; otherwise select the corresponding pseudo wire service according to the service information, determine the next hop label.

[0015] 进一步地,出节点负责保存服务器组虚标签与服务器组信息的对应关系,所述服务器组信息包括服务器的MAC地址;所述转发节点为出节点时,处理报文后,转发报文前,还执行以下步骤: [0015] Further, the correspondence relationship storage server node is responsible for a group of virtual server group label information, the group information server includes a server MAC address; when the node is a forwarding node, the post-processing packets, forwarding packets before, also perform the following steps:

[0016] 所述出节点根据所述服务器组虚标签查询对应的服务器组信息; [0016] The group information according to the server node to the query server corresponding to the virtual tag group;

[0017] 所述出节点根据负载均衡策略,均衡调度查询到的服务器组信息,获取所述服务器的MAC地址,并根据所述MAC地址进行转发。 [0017] The group information the server node according to the query load balancing policy, balanced scheduling, obtaining a MAC address of the server, and forwards according to the MAC address.

[0018] 进一步地,所述转发节点为出节点时,其对报文的处理还包括业务报文的信息替换、URL替换或地址代理替换。 When [0018] Furthermore, the forwarding node is a node that processes packets further includes a service information packet Alternatively, URL address of the proxy or alternatively replacement.

[0019] 为解决以上技术问题,本发明还提供了另一种利用MPLS技术的转发应用服务报文方法,该方法包括: [0019] In order to solve the above technical problem, the present invention also provides a method of packet forwarding service application to another by using the MPLS technique, the method comprising:

[0020] 入节点(Ingress PE)接收报文,插入相应伪线的标签,并转发; [0020] The ingress node (Ingress PE) received message, insert the label of the corresponding pseudo-wire, and forwarding;

[0021] 中间节点接收报文,并转发,其中倒数第二跳的中间节点(Transit)将所述报文中的原标签交换为相应服务器组虚标签,其中,不同的服务器组对应不同的服务器组虚标签; [0021] intermediate node receiving the packet, and forwards, wherein the penultimate intermediate node (Transit) the packet to the corresponding original label switching virtual tag server group, wherein the different server groups correspond to different servers virtual tag group;

[0022] 出节点(Egress PE)接收报文,并弹出接收的报文中的标签,根据所述服务器组虚标签对应的服务器组信息进行报文转发。 [0022] egress node (Egress PE) received message, and pops the label in the received message, forwarding the message server according to the group information corresponding to the virtual tag server group.

[0023] 进一步地,不同的伪线绑定不同的业务。 [0023] Further, different binding PW different services.

[0024] 进一步地,所述出节点负责保存服务器组虚标签与服务器组信息的对应关系,所述服务器组信息包括服务器的MAC地址;所述出节点转发报文前,还执行以下步骤: [0024] Further, the server is responsible for storing the corresponding relationship between the virtual tag set group information to the server node, the server sets the MAC address comprises a server; the egress node before forwarding packets further perform the following steps:

[0025] 所述出节点根据所述服务器组虚标签查询对应的服务器组信息; [0025] The group information according to the server node to the query server corresponding to the virtual tag group;

[0026] 所述出节点根据负载均衡策略,均衡调度查询到的服务器组信息,获取所述服务器的MAC地址,并根据所述MAC地址进行转发。 [0026] The group information the server node according to the query load balancing policy, balanced scheduling, obtaining a MAC address of the server, and forwards according to the MAC address.

[0027] 为解决以上技术问题,本发明还提供了一种利用MPLS技术的转发节点,该转发节点包括: [0027] In order to solve the above technical problem, the present invention also provides a node for forwarding using MPLS technology, the forwarding node comprising:

[0028] 报文接收模块,用于接收报文; [0028] The message receiving module, configured to receive a packet;

[0029] 报文处理模块,用于进行多协议标签交换(MPLS)处理,其中,所述转发节点为倒数第二跳的中间节点(Transit)时,将报文中的原标签交换为相应的服务器组虚标签;所述转发节点为出节点(Egress PE)时,弹出接收的报文中的标签,其中,不同的服务器组对应不同的服务器组虚标签; When the [0029] message processing module, for performing multi-protocol label switching (MPLS) treatment, wherein, the forwarding node is the penultimate hop intermediate node (Transit), the original packet corresponding label switching virtual server group label; the forwarding node node (Egress PE), pop-up message received label, wherein the different sets correspond to different servers of the server to the virtual tag group;

[0030] 报文转发模块,用于转发处理后的报文,其中,所述转发节点为出节点时,根据所述服务器组虚标签对应的服务器组信息进行报文转发。 [0030] The message forwarding module, for forwarding the packet, wherein the forwarding node when the node forwards the message server according to the group information corresponding to the virtual tag server group.

[0031] 进一步地,所述转发节点还包括业务伪线创建模块、报文解析识别模块及普通处理转发模块;其中: [0031] Furthermore, the forwarding node further comprises a service creation module pseudowire, message parsing module and a recognition module forwards the ordinary process; wherein:

[0032] 所述业务伪线创建模块,用于分配标签,创建业务伪线,且不同的业务伪线绑定不同的业务类型; [0032] The pseudo wire service creation module configured to assign labels and create pseudo wire service, and different service PW binding different service types;

[0033] 所述转发节点为入节点时,所述报文解析识别模块,用于对接收的报文进行解析,根据接收的报文中的业务信息判断对应的业务是否绑定业务伪线,以及绑定业务伪线时业务开关是否使能;以及绑定业务伪线且业务开关使能时,根据所述业务信息选择相应的业务伪线,确定下一跳标签; [0033] The forwarding node is the node, the identification message parsing module configured to parse the received message, determines whether a corresponding service according to the service PW bonded traffic information message received, when the pseudo wire service binding and service switch is enabled; and bound pseudo wire service and the service switch is enabled, select the corresponding pseudo wire service according to the service information, determines the next hop label;

[0034] 所述普通处理转发模块,用于在未绑定业务伪线或绑定业务伪线但业务开关未使能时,对接收的报文进行普通MPLS隧道处理及转发。 [0034] The normal processing forwarding module for unbound or bound pseudo wire service business pseudo wire service but can not make the switch, packets received common MPLS tunnel processing and forwarding.

[0035] 进一步地,所述转发节点为出节点时,还包括: When [0035] Furthermore, the forwarding node is a node, further comprising:

[0036] 信息表缓存模块,用于保存服务器组虚标签与服务器组信息的对应关系,所述服务器组信息包括服务器的MAC地址; [0036] The buffer module information table, a corresponding relationship between the storage server and the group server virtual tag group information, the group information includes a server's MAC address of the server;

[0037] 信息表查询模块,用于根据接收的报文中的服务器组虚标签查询对应的服务器组信息; [0037] Query module information table, query the server for the group information corresponding to the received packet in accordance with the virtual server group label;

[0038] 负载均衡模块,用于根据负载均衡策略,均衡调度查询到的服务器组信息,获取所述服务器的MAC地址。 [0038] The load balancing module, according to a load balancing policy, balancing scheduling information query to the server group, acquires the MAC address of the server.

[0039] 本发明利用现有MPLS技术进行交换转发,且出节点(Egress PE)为不同的应用服务业务服务器组分配不同的服务器组虚标签,在MPLS交换转发过程中,倒数第二跳转发节点将对应的服务器组虚标签作为最后一跳转发节点(即出节点)的标签,并进行交换转发,之后出节点直接获取对应服务器的MAC地址,并进行转发,可以使得应用层服务的交换能力得以提高,尤其在定向转发方面,能够发挥MPLS-TP技术标签转发的优势,通过MPLS-TP的伪线技术实现应用服务的快速定向转发。 [0039] The present invention is the use of existing MPLS forwarding exchange art, and the node (Egress PE) for different application service group service server assign different server groups the virtual tag in the MPLS forwarding process, the penultimate hop the node corresponding to the tag server as a virtual group last-hop forwarding node (i.e., a node) of the label, and forwards the exchange, after a node acquires the MAC address corresponding to the server directly, and forwards, so that the application layer service can be exchanged ability can be improved, especially in terms of directional forwarding, MPLS-TP technology can play the advantages of label forwarding, fast forwarding service oriented applications through the pseudo-wire technology of MPLS-TP.

附图说明 BRIEF DESCRIPTION

[0040] 图1是传统的内容交换与负载均衡的示意图; [0040] FIG. 1 is a schematic view of a conventional load balancing and content switching;

[0041] 图2是本发明利用MPLS技术转发应用服务报文的方法示意图; [0041] FIG. 2 is a schematic diagram of the present invention utilizes a method for forwarding MPLS technology application service packets;

[0042] 图3是本发明利用MPLS技术转发应用服务报文的方法的另一示意图; [0042] FIG. 3 is a schematic view of the invention using another MPLS technology application service method of forwarding packets;

[0043] 图4是本发明方法实施例的示意图。 [0043] FIG. 4 is a schematic of an embodiment of the method of the present invention.

具体实施方式[0044] 本发明利用现有MPLS技术(包括MPLS-TP、TMPLS, MPLS等)进行交换转发,且出节点(Egress PE)为不同的应用服务业务服务器组分配不同的服务器组虚标签,在MPLS交换转发过程中,倒数第二跳转发节点将对应的服务器组虚标签作为最后一跳转发节点(即出节点)的标签,并进行交换转发,之后出节点根据预置信息表直接获取对应服务器的MAC地址,并进行转发,可以使得应用层服务的交换能力得以提高,尤其在定向转发方面,能够发挥MPLS-TP技术标签转发的优势,通过MPLS-TP的伪线技术实现应用服务的快速定向转发。 DETAILED DESCRIPTION [0044] The present invention will be forwarded to exchange existing MPLS technology (including MPLS-TP, TMPLS, MPLS, etc.), and the egress node (Egress PE) different for different application service group service server group distribution server virtual tag in the MPLS forwarding process, the penultimate hop node corresponding to the server as a virtual tag group last-hop forwarding node (i.e., a node) of the label, and forwards the exchange, after the node information table according to the preset direct access to the corresponding server's MAC address, and forwarding, may enable exchange capacity of the application layer service can be improved, especially in directional forwarding aspects, can exhibit MPLS-TP art label forwarding advantage achieved applied by a pseudo-wire technology of MPLS-TP fast forwarding service orientation.

[0045] 对于每个转发节点而言,其利用MPLS技术转发应用服务报文的方法包括: [0045] for each node forwarding, MPLS technology methods utilizing application services forwarding packets comprises:

[0046] 步骤201:转发节点接收报文; [0046] Step 201: receiving a packet forwarding node;

[0047] 未特别指明时,本发明所说的转发节点可以是入节点(Ingress PE)、中间节点(Transit)或出节点(Egress PE)。 [0047] When not otherwise specified, the present invention may be a forwarding node of said ingress node (Ingress PE), an intermediate node (Transit) or the egress node (Egress PE).

[0048] 二层VPN(Virtual Private Network,虚拟专用网络)PE设备间的PSN(分组交换网络)隧道能够被复用成多个内部隧道,这种内部隧道又被称为伪线(Pseudo Wire, PW),下文中,PW侧则表示采用MPLS-TP技术进行VPN组网时的VPN网络侧。 [0048] Layer VPN (Virtual Private Network, Virtual Private Network) between the PSN of PE device (Packet Switched Network) tunnel can be multiplexed into a plurality inside the tunnel, which inner tunnel is also known as pseudo-wire (Pseudo Wire, PW), hereinafter, PW indicates side VPN network using MPLS-TP when the VPN network technology.

[0049] 为了实现报文转发,需要先为各转发节点分配标签,并创建业务伪线。 [0049] In order to achieve packet forwarding, you need to assign a label to the forwarding node, and create business pseudo wire. 且不同的业务伪线绑定不同的业务类型。 And different business PW bind different traffic types.

[0050] 预留一段为业务负载均衡准备的MPLS标签(Label)空间,称为业务负载均衡标签空间,根据各种业务允许接入的并发Sess1n(会话)数总和来决定标签空间的大小。 [0050] MPLS label reservation period as the traffic load balancing prepared (Label) space, traffic load balancing is called label space to determine the size of the label based on the sum space (session) Sess1n various services allow concurrent access. 对应生成的VCID空间称为业务VCID空间。 Corresponding to a space referred to as traffic generated VCID VCID space.

[0051] 优选地,采用伪线和业务1:1绑定的场景,即一条伪线只绑定一种业务。 [0051] Preferably, the pseudo wire service and 1: 1 binding scene, i.e., a PW bind only one service. 针对不同的业务,如NAT-PT (IPV6)、HTTP、HTTPS、EMAL, FTP等应用服务,创建独立的伪线模板,该伪线模板携带着业务类型属性即上述的业务类型。 For different services, such as a NAT-PT (IPV6), HTTP, HTTPS, EMAL, FTP services and other applications, create a separate template pseudo wire, PW template carrying the service type of the above-described properties i.e., service type.

[0052] 为特定业务定制的伪线模板与普通伪线的区别在于:普通伪线分配到的标签是通过LDP分发或静态分配的根据普通VCID (Virtual Connect1nIdentity,虚拟连接标识)生成的私网标签,而业务伪线使用的标签根据业务VCID生成,从业务标签控件栈中分配得至Ij,支持CO-ROUTED LSP和ASSOCIATED LSP两种方式的LSP (标签交换路径),即是否将前后两个方向的标签进行绑定。 [0052] The difference between ordinary PW is that for a particular service customization PW template: Normal PW assigned to the label is distributed by LDP or static allocation generated according to the normal VCID (Virtual Connect1nIdentity, virtual connection identifier) ​​private label , and the service PW labels used according to the service VCID generated, control service label dispensed from the stack to obtain Ij, CO-ROUTED LSP supporting ASSOCIATED LSP, and the LSP two modes (label switched path), i.e., whether the two longitudinal directions the label binding. 业务伪线的标签分配也支持动态和静态的方式。 The pseudo wire label distribution business also supports dynamic and static way.

[0053] 服务器组虚拟Label和业务VCID是对不同的业务预留专用标签空间,对其管理涉及到分配与释放的规则。 [0053] Virtual Server Group Label and business VCID is reserved for special label space for different business, its management involves rules of allocation and deallocation. 主要是预留空间之后按需(on demond)方式分配与释放。 The main on-demand (on demond) way to allocate and release after the reserved space.

[0054] 为业务伪线分配的最后一跳业务虚标签,即出节点的虚标签,是从业务负载均衡标签空间中分配,在倒数第二跳时伪线层不执行倒数第二跳弹出操作,而是交换为服务器组虚标签,每个服务器组虚标签对应一个特定的业务服务器组。 [0054] The last-hop traffic service virtual pseudo wire label distribution, i.e., a virtual tag node, traffic load balancing is dispensed from the label space, the dummy line layer does not perform Penultimate Hop Popping operation when the penultimate , but the exchange of virtual server group of labels, each label corresponding to a virtual server group specific service server group. 从业务负载均衡标签空间中获得分配给具体链接(Sess1n)的标签,因为具有业务负载均衡业务的含义,并且不参与普通的MPLS-TP转发交换,因此也称为服务器组业务虚标签。 Specific Link (Sess1n) obtained from traffic load balancing allocation space to the tag label, traffic load balancing services as having meaning, and does not participate in normal forward switching MPLS-TP, also known as the virtual tag group service server. 此类标签由配置的业务VCID生成。 Such tags generated by the configuration service VCID.

[0055] Ingress PE接收的某AC的报文将进入同一个隧道,内层封装不同的业务伪线标签,egress PE接收到携带有不同的服务器组虚标签的报文时,将不同的服务器组虚标签映射到不同的服务器组信息。 [0055] AC of a packet received by the Ingress PE enters the receiving server groups carrying different virtual tag packets with a tunnel, different inner packaging business PW label, egress PE, different server groups tags mapped to different virtual server group information. 其中AC是VPN(VirtualPrivate Network,虚拟专用网络)在组网上对于接入侧的称呼。 Wherein AC is a VPN (VirtualPrivate Network, virtual private network) address for the Internet access side in the group. [0056] 步骤202:所述转发节点对接收的报文进行多协议标签交换(MPLS)处理,其中,当前节点为倒数第二跳的中间节点(Transit)时,将所述报文中的原标签交换为相应业务的服务器组虚标签;当前节点为出节点(Egress PE)时,弹出接收的报文中的标签; [0056] Step 202: the node forwarding packets received Multiprotocol Label Switching (MPLS) treatment, wherein, when the current node is the inverse of the second hop intermediate node (Transit), the original message corresponding label switched service server virtual tag group; the current node is a node (Egress PE), the pop-up tag packets received;

[0057] 在MPLS-TP转发标签交换之前,入节点对报文进行解析识别,因为在逐包转发系统中逐个报文解析将降低效率,因此解析识别功能可用开关控制。 Before [0057] forwarding label switching MPLS-TP, the message parsing node identified as by-packet parsing efficiency by reducing the packet forwarding system, and therefore available for recognition parsing switch. 该功能主要对所转发报文的类型进行四层识别和协议类型的解析。 The main function of the type of packet will be forwarded and identify four types of protocol analysis. 对报文头内部信息执行相应的对策,根据内容选择不同的服务器组。 Perform a corresponding countermeasure internal packet header information, select a different group based on the content server.

[0058] L2VPN实例下可同时使能多种定制业务开关,并绑定多种业务的伪线,实现不同类型业务报文的伪线层分流。 The [0058] L2VPN Examples of more customized services simultaneously enabled switch, and bind multiple services PW, PW layer feedblock achieve different types of traffic packets. 当L2PVN实例下不绑定业务伪线时或不使能定制业务开关时,走普通的MPLS-TP隧道转发。 When the service is not bound instance L2PVN PW or switch enabling customized services, MPLS-TP ordinary walking tunnel forwarding.

[0059] 处理AC(接入电路,Attach Circuit,作用是连接用户边缘设备)侧过来的MPLS-TP报文时,转发节点(这里特指入节点)将解析用户的MPLS-TP报文),如,IPV6报文进入IPV6的伪线通道,也可再对OSI (Open SystemInterconnect,开放式系统互联)参考模型的4-7层业务进行解析,根据发往不同URL的请求,分别进入不同的业务伪线管道,按照已分配好的标签通道转发报文。 [0059] Processing AC (access circuit, Attach Circuit, role is to connect customer edge device) over the side of the MPLS-TP packet, forwarding node (the ingress node here especially) resolves user packet MPLS-TP), such as, IPV6 packets into the pseudo wire passage IPV6, and again may be OSI (open SystemInterconnect, open systems interconnection) reference model layers 4-7 analyzing traffic, according to different URL of the request sent, respectively, into different business PW pipeline, that have been allocated according to the channel label to forward packets. 目前可支持的业务为:HTTP、HTTPS、FTP、TELNET、IPV6(NAT-PT)。 Currently supports the business: HTTP, HTTPS, FTP, TELNET, IPV6 (NAT-PT). 而不属于以上业务类型的普通报文,依然按照原有的普通伪线进行普通MPLS-TP 转发。 Not part of the above types of common business messages, common MPLS-TP still be forwarded in accordance with the existing ordinary pseudo-wire.

[0060] 需要特别说明的,在倒数第二跳的中间节点,不执行倒数第二跳弹出操作,而是打上服务器组虚标签。 [0060] Of particular note, the reciprocal second hop intermediate node, is not performed Penultimate Hop Popping operation, but marked virtual server group tag.

[0061] 出节点预置服务器组标签信息表,该表中保存了服务器组虚标签和服务器组信息(包括服务器的MAC地址)的对应关系(服务器组虚标签可以内存索引的方式指向服务器组信息表)。 [0061] a group of server nodes preset label information table, which is saved in the server and the server virtual tag group set information (including the MAC address of the server) a correspondence relationship (virtual server group tag may be present to point to index information server group table). 以HASH表或二叉树的形式存放,提高读取速度。 HASH table or a binary tree form of storage, to improve the reading speed. 静态分配的方式写入,全局组网环境使用。 Writing method statically allocated global networking environments.

[0062] 步骤203:所述转发节点转发处理后的报文,其中,当前节点为出节点时,根据所述服务器组虚标签对应的服务器组信息进行报文转发。 [0062] Step 203: After the packet forwarding node forwarding process, wherein, when the current node is the node forwards the message server according to the group information corresponding to the virtual tag server group.

[0063] 出节点预置服务器组标签信息表,该表中保存了服务器组虚标签和服务器组信息(包括服务器的MAC地址)的对应关系(服务器组虚标签可以内存索引的方式指向服务器组信息表)。 [0063] a group of server nodes preset label information table, which is saved in the server and the server virtual tag group set information (including the MAC address of the server) a correspondence relationship (virtual server group tag may be present to point to index information server group table). 以HASH表或二叉树的形式存放,提高读取速度。 HASH table or a binary tree form of storage, to improve the reading speed. 静态分配的方式写入,全局组网环境使用。 Writing method statically allocated global networking environments.

[0064] 出节点接收到报文后,将提取报文中的业务信息,查询服务器组标签信息表,得到虚拟Label对应的服务器组信息,根据服务器负载均衡策略(RoundRobin (轮询)、WeightRound Robin(加权轮询)或者随机选择策略),均衡调度该服务器组中的服务器,获取相应的服务器的MAC信息,出节点再次取得报文的业务信息或将报文分发给指定服务器以达到负载均衡的目的,从服务器获取V6地址和获取相应的应用服务信息后,再将处理后的信息回传给AC侧的PTN设备。 [0064] After the node receives the packet, extracts the service information packets, the query server group label information table, the server to obtain the group information corresponding to the virtual Label according to server load balancing policy (of the RoundRobin (polling), WeightRound Robin (WRR) or random selection policy), the balancing scheduling server group server, obtain the appropriate MAC information server, the node to obtain service information packets or packets again to designated servers to achieve load balancing the purpose, from the server to obtain the corresponding V6 address and access to information application services, information processing and then back to the AC side of PTN equipment.

[0065] 可理解地,出节点交换之后还可能继续转发。 [0065] Understandably, may continue forwarding node after the exchange. 也即最后一跳业务设备可能放置在承载网任何位置。 I.e., the last-hop traffic device may be placed anywhere in the bearer network.

[0066] 另外,若转发节点是内容交换的最后一跳业务设备,其还具备快速报文处理机制,即快速替换报文头中的三层及以上信息,具体包括业务报文的信息替换、URL替换、地址代理替换等等,如IPV4和IPV6地址的NAT-PT转换,HTTP、HTTPS、FTP、EMAIL等信息的内容交换等。 [0066] Further, if the node is the last-hop forwarding service content exchange apparatus further includes a mechanism for fast packet processing, i.e. to quickly replace the header information of three or more, including replacement information service packet, Alternatively URL, address, etc. Alternatively agent, such as NAT-PT conversion IPV4 and IPV6 addresses, HTTP, HTTPS, FTP, EMAIL exchange information, etc. and the like.

[0067] 由快速报文处理机制替换报文中的IPV4地址,封装IPV6头部地址,而对于3层以上的内容层如HTTP服务,达到的效果是送往www.aaa.com的请求可被送到指定的一组服务器,而送往謂.ZZZ.com的请求被送到另一组不同的服务器,而不是把所有的HTTP通信都送至一组服务器。 [0067] replaced by the fast packet processing mechanism IPV4 address packets, encapsulated IPV6 head address, and for three or more layers such as HTTP service content layer, to achieve the effect of the request may be sent www.aaa.com to specify a group of servers, the request is sent to that .ZZZ.com to a different set of servers, rather than have all HTTP traffic sent to a group of servers. 与一个TCP/UDP(Transmiss1n Control Protocol,传输控制协议、User Data Protocol,用户数据报协议)端口相比,这样提供了更明确的负载平衡,并允许实现虚拟主机。 Compared with a port TCP / UDP (Transmiss1n Control Protocol, Transmission Control Protocol, User Data Protocol, User Datagram Protocol), which provides a more explicit load balancing, and allows virtual hosts. 网络交换还能够把指定的统一资源定位符(URL)、文件类型、统一资源标识符(URI) >Cookies等发送到特定的一组服务器。 The network switch can also be specified Uniform Resource Locator (the URL), a file type, a uniform resource identifier (URI)> Cookies the like to a specific set of servers. 对www.aaa.com ? /products的请求可被发送到产品服务器,而www.aaa.com/technical请求可被发送到那些处理技术内容的指定服务器。 To www.aaa.com? / Request products can be sent to a production server, and www.aaa.com/technical request can be sent to those specified servers handling technology content. 提高了服务器的吞吐量加快了响应时间,提升了用户体验质量。 Improve the throughput of the server to speed up the response time, enhance the quality of user experience.

[0068] 经过内容处理的报文,在出节点(如内容服务器的前台PTN(分组传送网,PacketTransport Network)设备)上面临两个选择:1、将在本地向AC侧汇总。 [0068] After processing the message contents, in a node (e.g., content server front of PTN (packet transport network, PacketTransport Network) devices) on two choices: 1, to the AC side in the local rollup. 2、弹出业务伪线标签并汇总后继续MPLS-TP转发。 2, after the pop business summary PW label and MPLS-TP continue forward.

[0069] 其中,在本地向AC侧汇总的方法:最后一跳弹出虚标签,向AC转发;继续向PW侧转发的方法:弹出服务器组虚标签,加上实际的转发标签,继续MPLS-TP的PW转发,即向另一个PW转发,具体做法:在VPN此设备的实例下绑定转发相关的PW或相关伪线,对某个VPN实例的业务伪线的报文全部汇聚到PW或相关伪线下。 [0069] wherein, in the method of locally aggregated to the AC side: the last hop eject virtual tag forwarded to the AC; the method continues forward side PW: pop virtual tag server group, by the actual forwarding label, continue MPLS-TP the PW forward, namely another PW forwarding specific practices: forward PW-related or related pseudowires in this instance VPN equipment under binding message to the business pseudo wire or a VPN instance all converge or related to PW pseudo wire.

[0070] 优点在于:在MPLS-TP协议环境中支持了负载均衡,借助了伪线层的快速封装转发,并且不改变伪线层的转发方式,并且借助MPLS-TP转发的PHP(PHP(Penultimate HopPopping),指MPLS的倒数第二跳标签弹出功能,而在MPLS-TP中默认是不支持PHP的,本发明中也需要倒数第二跳不弹出来支持服务器组业务虚标签的交换和识别,因此MPLS-TP技术对本发明的方案具有良好的可支持能力。)默认关闭、标签快速转发,支持多种动静态标签分配方式等特点,实现了业务流程与业务报文的定向转发相结合,并在最后一跳实现了标签转发和原有的负载均衡技术的结合。 [0070] The advantages are: to support load balancing in MPLS-TP protocol environment, by means of the rapid encapsulation PW layer forwarding and does not change the forwarding mode PW layer, and by means of MPLS-TP forwards the PHP (PHP (Penultimate HopPopping), means of MPLS penultimate hop label pop-up menu, and in the MPLS-TP PHP by default is not supported, the present invention also does not require the penultimate hop pop and recognition server supports exchange group service virtual tag, Thus MPLS-TP technology has good support capability for the embodiment of the present invention.) off by default, and label forwarding, support a variety of static and dynamic label distribution and other characteristics, to achieve directional forwarding business process and service packet combining, and in the last hop to achieve a combination of the original label forwarding and load balancing technology. 并且弹出业务伪线标签后可继续PW转发的方式,使得内容交换可在PW中继上进行,不需要再在SR或SR+路由器上业务终结,适应了未来网络设备扁平化的趋势,也为现有的组网部署提供了极大的灵活可能。 And the pop-up traffic may continue PW PW label forwarding manner, so that the content can be performed on the exchange relay PW, do not need the service termination SR or SR + router, a network device adapted to flatten the trend in the future, it is now also some network deployment provides a great deal of flexibility possible.

[0071] 以上是从单个转发节点的角度对本发明利用MPLS技术的转发应用服务报文方法进行描述的,当然也可以从沿转发的路径方向描述,如图3示意,包括以下步骤: [0071] or more from the perspective of a single forwarding node forwarding application will be described using the MPLS technique service message of the present invention, of course, also be described from the direction along the forwarding path, as shown in FIG 3 schematically, comprising the steps of:

[0072] 入节点(Ingress PE)接收报文,插入相应伪线的标签,并转发; [0072] The ingress node (Ingress PE) received message, insert the label of the corresponding pseudo-wire, and forwarding;

[0073] 中间节点接收报文,并转发,其中倒数第二跳的中间节点(Transit)将所述报文中的原标签交换为相应服务器组虚标签,其中,不同的服务器组对应不同的服务器组虚标签; [0073] intermediate node receiving the packet, and forwards, wherein the penultimate intermediate node (Transit) the packet to the corresponding original label switching virtual tag server group, wherein the different server groups correspond to different servers virtual tag group;

[0074] 出节点(Egress PE)接收报文,并弹出接收的报文中的标签,根据所述服务器组虚标签对应的服务器组信息进行报文转发。 [0074] egress node (Egress PE) received message, and pops the label in the received message, forwarding the message server according to the group information corresponding to the virtual tag server group.

[0075] 具体各转发节点的处理方式与前文描述相同,在此不再赘述。 [0075] In particular treatment with the respective forwarding node the same as the foregoing description, it is not repeated here.

[0076] 如图4所示,是本发明的具体实施步骤,主要按1:1的方式实现伪线对业务的承载,采用LDP或静态的标签分配方式为伪线分配服务器组虚标签,从同一个AC过来的报文,基于同一条伪线,实现基于业务的伪线流量分离,对应到相应的业务或内容服务器组选择目标服务器,实现MPLS-TP技术支持内容交换和负载分担,这样可以在承载网领域较好的实现内容交换和负载分担技术,降低响应时间,提高用户友好度与网络可运营能力: [0076] As shown in FIG 4, a specific embodiment of the present invention, the step of, mainly 1: 1 manner to achieve pseudo wire service bearer, using LDP or static allocation mode a pseudo wire label distribution server virtual tag group, from same AC packets from, based on the same pseudo wire, pseudo-wire traffic service separation, corresponding to the corresponding service or content server group select the target servers, realized MPLS-TP support content switching and load balancing based on, this can field in the bearer network achieve a better load balancing and content switching technology to reduce response time, to improve the user-friendliness and ability of network operators:

[0077] 步骤401:首先创建业务伪线,根据隧道标签分配类型(静态、LDP、RSVP)分配标签,最后一跳是服务器组业务虚标签; [0077] Step 401: Create a first pseudo wire service, according to the tunnel label assigned label allocation type (static, LDP, RSVP), the last-hop virtual tag group service server;

[0078] 首先创建业务伪线模板,PW模板下可指定该伪线承载的业务类型,根据标签分配方式(静态、LDP(标签分发协议))分配标签,用于承载业务的伪线的VCID范围将被控制在业务VCID范围内,因此根据此VC生成的PW标签是服务器组业务虚标签。 VCID range [0078] First, the pseudo wire service created template, the template may specify PW PW service type of the bearer, the label according to the label allocation distribution (static, the LDP (Label Distribution Protocol)), for carrying traffic pseudowire the traffic is controlled within the VCID range, according to this VC label PW generated virtual tag group service server. 虚标签需要显式的静态配置隧道时指定或者由标签管理模块动态从业务虚标签空间中分配,通过LDP推送到倒数第二跳供标签交换。 Specified when the virtual tag need to explicitly configure a static or dynamically assigned by the tunnel management module from the service tag virtual tag space, pushed by the LDP for the penultimate hop label switching.

[0079] 步骤402:在L2VPN业务实例中使能相关定制业务的开关,并在该L2VPN业务实例下绑定业务伪线; [0079] Step 402: In L2VPN service instance associated switch is enabled in a custom business and service bindings at the pseudowire L2VPN service instance;

[0080] 将报文解析识别业务作为一个定制业务,在L2VPN业务实例中使能相关定制业务的开关,并在该L2VPN (二层虚拟专用网L2VPN)业务实例和外层隧道下绑定业务伪线,绑定成功后业务生效,属于此实例的报文将作为需要业务解析和定向转发的报文处理,经过报文快速解析模块的对应该业务的信息识别,报文将进入MPLS-TP转发流程。 [0080] The message parsing service identification as a custom service, the L2VPN service instance associated switch is enabled in the custom business, and the binding at pseudo-L2VPN service (L2VPN Layer Virtual Private Network) tunneling service instance and an outer layer line, after the entry into force of the binding business success, belong to this instance of packets as needed to resolve business and packet processing directional forwarding packets quickly after the parsing module of information should identify the business, the message will be forwarded to enter the MPLS-TP Process.

[0081] 步骤403:入节点对业务报文进行解析,若识别为对应使能的业务伪线,则进入MPLS-TP内容交换转发流程,否则执行普通报文转发流程; [0081] Step 403: node into the service packet parsing, if identified as corresponding pseudo wire service can make, the process proceeds to forward MPLS-TP content switching process, otherwise, execute ordinary message forwarding process;

[0082] 入节点需要根据接收的报文中的业务信息判断对应的业务是否绑定业务伪线,以及绑定业务伪线时业务开关是否使能;未绑定业务伪线或绑定业务伪线但业务开关未使能时,对接收的报文进行普通MPLS隧道处理及转发,即走L2VPN实例中的普通伪线转发;否则根据所述业务信息选择相应的业务伪线,确定下一跳标签。 [0082] The need is bound ingress packet according to the service information received in a corresponding service determined pseudo wire service, and the service when binding pseudo wire service switch is enabled; unbound pseudo wire service, or bundled services pseudo line switching service but not enabled, packets received common MPLS tunnel processing and forwarding, and go L2VPN instance of ordinary pseudowire forwarding; otherwise, select the appropriate pseudo wire service according to the service information, determines the next hop label.

[0083] 报文进入MPLS-TP内容交换转发流程,包括入节点插入标签、中间节点交换标签 [0083] MPLS-TP packet into the forwarding content switching process, including insertion ingress label, the label intermediate nodes exchange

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[0084] 步骤404:倒数第二跳的中间节点,不弹出标签,进行虚标签交换; [0084] Step 404: the reciprocal of the intermediate node of the second hop, the label is not ejected, a virtual label switching;

[0085] 步骤405:最后一跳(即Egress PE)判断最后一跳的标签是否在业务虚标签空间内,若最后一跳标签不在虚标签空间内,则不查询服务器组标签信息表,执行普通报文转发流程; [0085] Step 405: the last hop (i.e. Egress PE) determines whether the last hop in the service tag virtual tag space, if the tag is not the last hop virtual tag space, no query server group label information table, ordinary packet forwarding process;

[0086] 步骤406:出节点(Egress PE)查询服务器组标签信息表,若查询不到标签对应信息的,也都将走普通转发流程,若查询得到虚拟Label对应的服务器组信息,则执行步骤407 ; [0086] Step 406: the egress node (Egress PE) queries the server group label information table, if not find the information corresponding to the tag, will also take the ordinary forwarding process, if the query to obtain the corresponding Label virtual server group information, step 407;

[0087] Egress PE接收到不同的服务器组虚标签时,将不同的标签映射到不同的服务器组。 When [0087] Egress PE receives a different server groups the virtual tag, different tags mapped to different server groups.

[0088] 步骤407:根据服务器负载均衡策略,均衡调度获取服务器的MAC地址信息,根据MAC地址将将报文相关待处理信息送至目标服务器; [0088] Step 407: The server load balancing policy, balancing scheduling information acquisition server MAC address, the MAC address to the packet-related information to the target server to be processed;

[0089] 步骤408:根据内容处理后的内容交换报文是否本地终结,将弹出业务伪标签后在本地向AC侧汇总或者弹出业务伪线标签并汇总后继续MPLS-TP的PW侧转发。 Continue PW, MPLS-TP, or pop the aggregated service forwards the PW label and whether the local exchange messages aggregated according to the end of the content processing contents, the dummy label pop operations on locally to the AC side: [0089] Step 408.

[0090] 以上实施例中,将报文解析识别业务作为一个定制业务,在L2VPN业务实例中使能相关定制业务的开关,并在该L2VPN业务实例和外层隧道下绑定业务伪线,绑定成功后业务生效,属于此实例的报文将作为需要业务解析和定向转发的报文处理,经过报文快速解析模块的对应该业务的信息识别,报文将进入MPLS-TP转发流程,业务定向转发体现在倒数第二跳,标签不弹出,而是打上最后一跳标签,即从业务负载均衡标签空间中分配的相应业务的服务器组虚标签。 [0090] In the above embodiment, the message parsing service identification as a custom service, the L2VPN service instance associated switch is enabled in a custom business and service bindings at the pseudowire L2VPN service instance and outer tunnels, tie given after a successful business into effect, belong to this instance of packets as required service resolution and packet processing directional forwarding packets passing through the rapid analysis module forwarding process to be information that identifies the packets services will enter the MPLS-TP, business directional forwarding reflected in the penultimate hop, the label does not pop up, but marked the last hop label, the label that is assigned virtual server group from the traffic load balancing label space corresponding service.

[0091] 为实现以上方法,本发明还提供了一种利用MPLS技术的转发节点,该转发节点包括: [0091] In order to achieve the above method, the present invention also provides a node for forwarding using MPLS technology, the forwarding node comprising:

[0092] 报文接收模块,用于接收报文; [0092] The message receiving module, configured to receive a packet;

[0093] 报文处理模块,用于进行多协议标签交换(MPLS)处理,其中,所述转发节点为倒数第二跳的中间节点(Transit)时,将报文中的原标签交换为相应业务的服务器组虚标签;所述转发节点为出节点(Egress PE)时,弹出接收的报文中的标签,其中,不同的服务器组对应不同的服务器组虚标签; When the [0093] message processing module, for performing multi-protocol label switching (MPLS) treatment, wherein, the forwarding node is the penultimate hop intermediate node (Transit), the original packet to the corresponding service label switching virtual server group label; when the node is a forwarding node (egress PE), pop-up message received label, wherein the different sets correspond to different servers of the server virtual tag group;

[0094] 报文转发模块,用于转发处理后的报文,其中,所述转发节点为出节点时,根据所述服务器组虚标签对应的服务器组信息进行报文转发。 [0094] The message forwarding module, for forwarding the packet, wherein the forwarding node when the node forwards the message server according to the group information corresponding to the virtual tag server group.

[0095] 进一步地,所述转发节点还包括业务伪线创建模块,用于分配标签,创建业务伪线,且不同的业务伪线绑定不同的业务类型。 [0095] Furthermore, the forwarding node further comprises a service creation module pseudowire, for dispensing labels, creating pseudo wire service, and different service PW bind different traffic types.

[0096] 所述转发节点还包括报文解析识别模块及普通处理转发模块;其中,所述转发节点为入节点时,所述报文解析识别模块,用于对接收的报文进行解析,根据接收的报文中的业务信息判断对应的业务是否绑定业务伪线,以及绑定业务伪线时业务开关是否使能;以及绑定业务伪线且业务开关使能时,根据所述业务信息选择相应的业务伪线,确定下一跳标签; [0096] The forwarding node further comprises a message parsing module and a recognition module forwards the ordinary process; wherein, the forwarding node is the node, the identification message parsing module configured to parse the received packets, in accordance with whether the service information packets received in a corresponding service binding is determined pseudo wire service, and the service when binding pseudo wire service switch is enabled; and bound pseudo wire service and the service switch is enabled, according to the service information PW select corresponding service, determine the next hop label;

[0097] 所述普通处理转发模块,用于在未绑定业务伪线或绑定业务伪线但业务开关未使能时,对接收的报文进行普通MPLS隧道处理及转发。 The [0097] Normal processing a forwarding module, configured to, when not bound or bound pseudo wire service business pseudo wire service, but the switch is not enabled, the received packets subjected to ordinary processing and forwarding the MPLS tunnel.

[0098] 所述转发节点为出节点时,还包括: When [0098] the forwarding node is a node, further comprising:

[0099] 信息表缓存模块,用于保存服务器组虚标签与服务器组信息的对应关系,所述服务器组信息包括服务器的MAC地址; [0099] module cache information table, the correspondence relationship storage server for the virtual tag set group information to the server, the server group information includes the MAC address of the server;

[0100] 信息表查询模块,用于根据接收的报文中的服务器组虚标签查询对应的服务器组信息; [0100] Query module information table, query the server for the group information corresponding to the received packet in accordance with the virtual server group label;

[0101] 负载均衡模块,用于根据负载均衡策略,均衡调度查询到的服务器组信息,获取所述服务器的MAC地址。 [0101] Load balancing module for load balancing policy balancing scheduling information query to the server group, acquires the MAC address of the server.

[0102] 本发明提出一种利用MPLS技术实现应用服务报文转发方法,通过将内容应用服务结合到PTN承载网中,实现将业务引入PTN承载网络,以此构筑一张可运营可管理的PTN承载网络,全面提高承载网产品的竞争力,为下一步网络时代的竞争发力,在不改变现有电信设备格局的情况下,深化与高端客户的需求互动。 [0102] proposed a technology application service by using the MPLS packet forwarding method, by the content of the application service bearer network coupled to the PTN, introduction implement traffic bearer network PTN, by this construction an operable and manageable of the present invention, PTN bearer network, improve the competitiveness of bearer network products, competitive force next era of network, without changing the existing pattern of telecommunications equipment, deepening interaction with the high customer demand.

[0103] 本发明通过伪线技术的合理改造,可支持服务器群的负载分担,使用标签分配和伪线技术结合的技术,不使用VIP等地址替换方案,提高了转发效率,使内容转发和负载分担过程有机结合。 [0103] The present invention is by rational engineering pseudo wire technology to support load balancing server farm using a label distribution and pseudo-wire technologies in the art, without using an address VIP other alternative, more efficient forwarding the content transfer and load sharing the combination.

[0104] 本发明按1:1的方式实现伪线对业务的承载,实现应用服务的快速定向转发,采用LDP或静态的标签分配方式为伪线分配服务器组虚标签,实现基于业务的伪线流量分离,对应NAT-PT、HTTP、HTTPS、EMAIL、FTP等内容服务器组,选择服务器提供内容交换服务。 [0104] The present invention is 1: Implementation 1 PW bearer service, fast oriented applications and services forwarded using LDP or static label allocation virtual label PW distribution server group, Based on business PW flow separation, corresponding to the NAT-PT, HTTP, HTTPS, EMAIL, FTP etc. server group, select a server providing content exchange service.

[0105] 本专利使用负载均衡技术,提供NAT-PT业务,在二层交换机上,将通过专用加密通道与NAT-PT服务器群进行通信,提供地址转换服务和可定制的4层及以上内容交换,定制HTTP、HTTPS、EMAIL、FTP等应用服务的内容交换,并使用MPLS-TP技术增强应用层转发能力。 [0105] This patent uses load balancing, provide NAT-PT service, the switcher in the encrypted communication through a dedicated channel and the NAT-PT server farm, and to provide address translation services layer, and customizable 4 above exchange , custom HTTP, HTTPS, EMAIL, FTP and other application services content exchange, and the use of MPLS-TP technology enhances application layer forwarding capability.

[0106] 本发明适合的组网环境为一切使用MPLS-TP技术的PTN的典型或非典型组网,月艮务器群(服务器组)可以部署在汇聚环的RNC之后,也可以在接入环上的汇聚节点之后,也可以在接入环的接入节点之后部署服务器组 [0106] Typical PTN of the invention is suitable for all networking environment using MPLS-TP or atypical networking technology, that works to control groups monthly (Server Group) can be deployed after the convergence RNC ring, it may be an access after aggregation node on the ring, can also be deployed after the access node group server access ring

[0107] 本发明根据报文头内部信息执行负载分担对策选择不同的服务器组。 [0107] The present invention assume different Countermeasure inner server group according to packet header information to perform load. 在倒数第二跳不弹出,而是交换为服务器组虚标签,在最后一跳上弹出虚标签查询到对应的服务器组信息,再根据服务器组负荷分担策略:Round Robin、随机选择、Weight Round Robin选择目标服务器。 In the penultimate hop does not eject, but the exchange of virtual server group label, pop the virtual tag query to the server group information corresponding to the last-hop, then a load sharing policy server according to group: Round Robin, randomly selected, Weight Round Robin select the target server. 出节点将报文或信息定向到服务器组专用连接端口,根据报文头的内部信息执行负载均衡对策,对WEB服务为诸如图像服务、SSL对话和数据库事务服务之类的特殊功能进行了优化。 Egress packets or messages directed to the server group dedicated connection port, according to the internal packet header information to perform load balancing measures on WEB service optimized for such image service, special features SSL session and database transaction services like.

Claims (8)

1.一种利用MPLS技术的转发应用服务报文方法,其特征在于,该方法包括: 转发节点接收报文; 所述转发节点对接收的报文进行多协议标签交换MPLS处理,其中,当前节点为倒数第二跳的中间节点Transit时,将所述报文中的原标签交换为相应服务器组虚标签;当前节点为出节点Egress PE时,弹出接收的报文中的标签,其中,不同的服务器组对应不同的服务器组虚标签; 所述转发节点转发处理后的报文,其中,当前节点为出节点时,根据所述服务器组虚标签对应的服务器组信息进行报文转发; 接收报文的步骤前,该方法还包括,为所述转发节点分配标签,并创建业务伪线,且不同的业务伪线绑定不同的业务类型; 所述转发节点为入节点时,其接收所述报文后,处理所述报文前,对接收的报文进行解析,根据接收的报文中的业务信息判断对应的业务是否绑 A technique using MPLS packet forwarding application service method, wherein the method comprises: receiving a packet forwarding node; the node forwarding packets received Multiprotocol Label Switching MPLS processing, wherein the current node penultimate intermediate is Transit node, the packet to the corresponding original label switching virtual server group label; the label of the packet node Egress PE, pop received current node, wherein different different server group corresponding to the group server virtual tag; after forwarding the packet forwarding node, wherein the current node is a node, the server forwards the message according to the group information corresponding to the virtual tag group server; receiving packets before step, the method further comprises, for said forwarding node the label allocation, and create a business pseudo wire, PW and different business binding different service types; when the forwarding node is the node which receives the packet hereinafter, the pre-processing packets received packets is parsed according to whether the service information tied received packet is determined corresponding service 业务伪线,以及绑定业务伪线时业务开关是否使能;未绑定业务伪线或绑定业务伪线但业务开关未使能时,对接收的报文进行普通MPLS隧道处理及转发;否则根据所述业务信息选择相应的业务伪线,确定下一跳标签。 Pseudo wire service, and the service when binding pseudo wire service switch is enabled; unbound pseudo wire service, or bundled services, but pseudo wire service switch is not enabled, packets received common MPLS tunnel processing and forwarding; otherwise select the corresponding pseudo wire service according to the service information, determine the next hop label.
2.如权利要求1所述的方法,其特征在于:出节点负责保存服务器组虚标签与服务器组信息的对应关系,所述服务器组信息包括服务器的MAC地址;所述转发节点为出节点时,处理报文后,转发报文前,还执行以下步骤: 所述出节点根据所述服务器组虚标签查询对应的服务器组信息; 所述出节点根据负载均衡策略,均衡调度查询到的服务器组信息,获取所述服务器的MAC地址,并根据所述MAC地址进行转发。 When the node is a forwarding node; corresponding relationship between the group server is responsible for storing the virtual tag and the group information server node, the server information includes the MAC address of the server group: 2. The method according to claim 1, characterized in that after processing the message, before forwarding the packet, further perform the following steps: the group information the server node corresponding to the query based on the virtual server group label; the egress node according to the query load balancing policy, balancing scheduling server group information to obtain the server's MAC address, and according to the MAC address forwarding.
3.如权利要求1所述的方法,其特征在于:所述转发节点为出节点时,其对报文的处理还包括业务报文的信息替换、URL替换或地址代理替换。 The method according to claim 1, wherein: said forwarding node is a node that processes packets further includes a service information packet Alternatively, URL address of the proxy or alternatively replacement.
4.一种利用MPLS技术的转发应用服务报文方法,其特征在于,该方法包括: 入节点Ingress PE接收报文,插入相应伪线的标签,并转发; 中间节点接收报文,并转发,其中倒数第二跳的中间节点Transit将所述报文中的原标签交换为相应服务器组虚标签,其中,不同的服务器组对应不同的服务器组虚标签; 出节点Egress PE接收报文,并弹出接收的报文中的标签,根据所述服务器组虚标签对应的服务器组信息进行报文转发; 接收报文的步骤前,该方法还包括,为转发节点分配标签,并创建业务伪线,且不同的业务伪线绑定不同的业务类型; 所述转发节点为入节点时,其接收所述报文后,处理所述报文前,对接收的报文进行解析,根据接收的报文中的业务信息判断对应的业务是否绑定业务伪线,以及绑定业务伪线时业务开关是否使能;未绑定业务伪线或绑定业务伪 A technique using MPLS packet forwarding application service method, wherein the method comprises: receiving ingress packets Ingress PE, PW corresponding insert labels and forwards; intermediate node receives packets and forwards, wherein the penultimate intermediate node packet Transit the original label switching virtual tag corresponding server group, wherein, different servers of a server group corresponding to the virtual tag; egress PE node receives a packet, and eject packets received labels, forwarding the message server according to the group information corresponding to the virtual tag server group; before the step of receiving the message, the method further comprises, forwarding node is assigned labels and created pseudo wire service, and PW bind different business different service types; when the node is a forwarding node, which upon receiving the packet before the packet processing, the received packets by analyzing the packets received in accordance with determining whether service information corresponding to the pseudo wire bonded traffic service, and the service when binding pseudo wire service switch is enabled; unbound pseudo wire service, or bundled services pseudo 线但业务开关未使能时,对接收的报文进行普通MPLS隧道处理及转发;否则根据所述业务信息选择相应的业务伪线,确定下一跳标签。 When the service line but no enabled switch, packets received and forwarded common MPLS tunnel processing; otherwise, select the corresponding pseudo wire service according to the service information, determine the next hop label.
5.如权利要求4所述的方法,其特征在于:不同的伪线绑定不同的业务。 5. The method according to claim 4, wherein: different pseudo wire binding different services.
6.如权利要求4所述的方法,其特征在于:所述出节点负责保存服务器组虚标签与服务器组信息的对应关系,所述服务器组信息包括服务器的MAC地址;所述出节点转发报文前,还执行以下步骤: 所述出节点根据所述服务器组虚标签查询对应的服务器组信息; 所述出节点根据负载均衡策略,均衡调度查询到的服务器组信息,获取所述服务器的MAC地址,并根据所述MAC地址进行转发。 6. The method according to claim 4, wherein: the node is responsible for storing a corresponding relationship between the group server and the virtual tag group information server, said information server includes a MAC address of the server group; said node forwards the packet the foregoing, further perform the following steps: the group information the server node corresponding to the query based on the virtual server group label; the node according to a load balancing policy, balancing scheduling information query to the server group, the server acquires the MAC address, and forwards according to the MAC address.
7.一种利用MPLS技术的转发节点,其特征在于,该转发节点包括: 报文接收模块,用于接收报文; 报文处理模块,用于进行多协议标签交换MPLS处理,其中,所述转发节点为倒数第二跳的中间节点Transit时,将报文中的原标签交换为相应的服务器组虚标签;所述转发节点为出节点Egress PE时,弹出接收的报文中的标签,其中,不同的服务器组对应不同的服务器组虚标签; 报文转发模块,用于转发处理后的报文,其中,所述转发节点为出节点时,根据所述服务器组虚标签对应的服务器组信息进行报文转发; 所述转发节点还包括业务伪线创建模块、报文解析识别模块及普通处理转发模块;其中: 所述业务伪线创建模块,用于分配标签,创建业务伪线,且不同的业务伪线绑定不同的业务类型; 所述转发节点为入节点时,所述报文解析识别模块,用于对接收的报 A technique using MPLS forwarding node, wherein the forwarding node comprising: a message receiving module, configured to receive a packet; packet processing module for processing MPLS Multiprotocol Label Switching, wherein said Transit forwarding intermediate node is the penultimate hop node of the original packet corresponding label switching virtual server group label; when the node is a forwarding node egress PE, pop-up messages received tag, wherein packet forwarding module, for forwarding the packet, wherein the forwarding node is a node, according to the set of virtual server corresponding to the tag information of the server group;, different servers of a server group of the corresponding virtual tag forwarding the message; the forwarding node further comprises a service creation module pseudowire, message parsing module and a recognition module forwards the ordinary process; wherein: the pseudo wire service creation module configured to assign labels and create pseudo wire service, and different different pseudo wire service binding service type; the forwarding node is the node, the identification message parsing module for the received packets 文进行解析,根据接收的报文中的业务信息判断对应的业务是否绑定业务伪线,以及绑定业务伪线时业务开关是否使能;以及绑定业务伪线且业务开关使能时,根据所述业务信息选择相应的业务伪线,确定下一跳标签; 所述普通处理转发模块,用于在未绑定业务伪线或绑定业务伪线但业务开关未使能时,对接收的报文进行普通MPLS隧道处理及转发。 Parse the text, determining whether a corresponding service binding pseudo wire service, and the service when binding pseudo wire service according to the service switching whether to enable the received packet information; and a pseudo wire service and the service bindings switch is enabled, the service information corresponding to the selected service PW, determine the next hop label; forwarding said common processing means for pseudo wire service in unbound or bound pseudo wire service but the service switch is not enabled, the received the common MPLS packet processing and forwarding tunnel.
8.如权利要求7所述的转发节点,其特征在于,所述转发节点为出节点时,还包括: 信息表缓存模块,用于保存服务器组虚标签与服务器组信息的对应关系,所述服务器组信息包括服务器的MAC地址; 信息表查询模块,用于根据接收的报文中的服务器组虚标签查询对应的服务器组信息; 负载均衡模块,用于根据负载均衡策略,均衡调度查询到的服务器组信息,获取所述服务器的MAC地址。 8. The forwarding node according to claim 7, wherein said node is a forwarding node, further comprising: a buffer module information table, a corresponding relationship between the virtual storage server group server group label information, the server group information includes a MAC address of a server; information table query module configured to query the server group information corresponding to the received packet in accordance with the virtual server group label; load balancing module, according to a load balancing policy, scheduling queries to equilibrium group information server, acquiring the MAC address of the server.
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