CN100512303C - Method for confirming mapping relation between cross-domain service domain interior domains - Google Patents

Method for confirming mapping relation between cross-domain service domain interior domains Download PDF

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CN100512303C
CN100512303C CN 200610007833 CN200610007833A CN100512303C CN 100512303 C CN100512303 C CN 100512303C CN 200610007833 CN200610007833 CN 200610007833 CN 200610007833 A CN200610007833 A CN 200610007833A CN 100512303 C CN100512303 C CN 100512303C
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domain
level
service
negotiation
mapping
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CN1866960A (en )
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旺 李
汪广泽
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华为技术有限公司
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Abstract

本发明涉及通讯技术领域中一种跨域业务域内域间映射关系的确定方法。 The present invention relates to a method for determining a mapping relationship between one kind of domain-domain cross-domain communication service art. 该方法包括:首先,域的入口点接收到承载有服务等级协商SLA映射对象信息的业务建立的路径消息;结合所述SLA信息及每个节点配置的SLA协商策略数据确定跨域业务域内域间SLA映射关系。 The method comprising: a first entry point field received Path message carries service negotiation information to service SLA level map object created; SLA binding negotiation policy configuration data and the SLA information for each service node determines inter-domain cross-domain domain SLA mappings. 本发明实现了针对不同域配置不同的策略,提高了业务在经过条件较差的域时的稳定性,及经过条件较好域时的资源利用率,从而降低了管理和维护的业务成本。 The present invention achieves different for different domain configurations strategy to improve the stability of the business in the conditions of the poor through the domain, and resource utilization through better conditions when domain, thereby reducing the cost of management and maintenance services.

Description

一种if争域业务域内域间映射关系的确定方法 A method for determining inter-domain business domain domain mappings if war

技术领域 FIELD

本发明涉及通讯4支术领域,尤其涉及一种跨域业务域内域间映射关系的确定方法。 The present invention relates to communication technique 4, and in particular relates to a method of determining the mapping relationship between an inter-domain cross-domain service domain.

背景技术 Background technique

传统的网络拓朴为单域模式,在域内所有网元都保存有全网的拓朴信息,拓朴信息的变化也会洪泛到域内所有节点,网管对域内所有节点进行统一管理。 Traditional network topology for the single domain mode, all network elements are stored within the entire network topology information, the topology change information will be flooded to all nodes within the network management domain for all nodes in the unified management. 但随着网络的大规模化,现有的单域模式拓朴已经显示出它的瓶颈,即,断纤、资源变化时洪泛的信息量巨大,对网络造成较大的沖击,设备处理能力上的限制,维护管理上不方便,以及不同设备厂商的设备在单域模式的拓朴下很难完成互联互通。 However, with large scale networks, a conventional single domain model has shown its topology bottlenecks, i.e., a fiber cut, when the change in the amount of information flooding enormous resources, resulting in a greater impact on the network, the processing device restrictions on the ability, convenient maintenance management, as well as various equipment vendors' equipment interoperability difficult to achieve in a single domain topology model.

目前,ITU-T和OIF等国际标准化组织均采用层次网络模型,将大规模网络划分成多个不同的域进行管理,这些域相对较小,路由信息的洪泛均只在节点所在域内进行,对网络的冲击减小,管理和维护上更方便,不同设备供应商的产品分在不同的域内組网,通过国际标准的ENNI接口对接,可以方便的实现互联互通。 At present, ITU-T and OIF and other international standardization organizations are hierarchical network model, large-scale network into several different management domains, these domains are relatively small, flood routing information are only at the nodes where the domain, reducing the impact on the network and even easier to manage and maintain, a vendor of products at different network domains, by international standards ENNI docking interface, can easily achieve interoperability. 图l即为层次网络示意图。 Figure l is the schematic hierarchical network.

图中O层为实际网络拓朴,分为CD1-CD5五个控制域,每个域向上抽象成一个节点,该节点将下层域的拓朴信息发布到上一层,构成1层的CD6及CD7两个域,同理,最终将所有节点抽象到一个域中;0层域和域之间的链 O layer in FIG actual network topology, control is divided into five domains CD1-CD5, abstract upwardly into each domain node, the node topology information published to the lower layer domain, and the layer constituting the CD6 1 CD7 two fields, the same token, all nodes eventually to abstract domain; link layer between the domains and domain 0

路信息也将发布到上一层,实现下层每个域在上层域中的连接,最终形成如图l所示的三层网络。 Road information is also posted to the level achieved in the lower region of each connecting the upper domain, forming the three layer network shown in Figure l. 在多域情况下建立一条跨域的端到端业务时,在一个域的入口处需要建 When you create a cross-domain end service in a multi-domain scenario, at the entrance of the need to build a domain

立一条或多条域内隧道,这就存在一个问题:域内隧道SLA (服务等级协商)与外层端到端业务SLA的映射。 Legislation or a section within the tunnel, lies the problem: the tunnel within SLA (service level consultation) and mapping the outer end service SLA's.

目前的做法是采用静态的映射方式,即一种端到端业务的SLA对应一种且只有一种域内隧道的SLA,例如外层端到端业务为Dedicated l+l级别,对应的域内隧道为Shared级别,且不会改变。 The current practice is to use a static mapping mode, i.e., from end to end service SLA corresponding to one and only one kind of SLA within the tunnel, for example to the outer-end service level Dedicated l + l, corresponding to a tunnel region Shared level, and will not change. 并将这种关系固化到智能软件中,不会改变。 And solidify this relationship to intelligence software, will not change. 如图2示出了这种映射关系。 2 illustrates such a mapping relationship.

这种做法实现简单,但存在如下问题:周为网络规模越来越大,每个域的拓朴状态及外部环境可能不尽相同,在链路资源较少、外部环境恶劣的域内,断纤等异常的概率相对较高,只建一条保护等级较低的域内隧道就会使业务中断的概率相对较高,而且一旦发生异常,因为外部环境恶劣等因素使维修周期较长,费用较高;相反,在链路资源丰富、外部环境较好的域内,建一条保护等级高的域内隧道就会造成资源利用率不高,使其它用户得不到足够资源,这就给业务的稳定性造成隐患,也给运营商的管理和维护造成很大的不便,加大运营成本。 This approach is simple, but there is a problem: the increasing scale of weeks for network, topology status and external environment for each domain may vary less in link resources, poor external environment domain, fiber cut relatively high probability of abnormal, to build only a low level of protection within the tunnel will make the relatively high probability of business disruption, and once an exception occurs, because the harsh external environment and other factors make the maintenance cycle long and costly process; Instead, the link in the resource-rich, better external environment of the region, the construction of a high level of protection within the tunnel will cause resource utilization is not high, so that other users can not get enough resources, which resulted in risks to the stability of the business , but also caused great inconvenience to the operator's management and maintenance, and increase operating costs. 而且由于上述方案没有根据每个域的链路资源及外部环境特点制定不同的映射策略,造成业务稳定性隐患,资源浪费等问题。 And because the above programs did not develop according to different mapping strategies for each domain link resources and external environmental characteristics, resulting in operational stability risks, waste of resources and other issues.

发明内容 SUMMARY

本发明的目的在于提供一种跨域业务域内域间映射关系的确定方法,通过在RSVP协议中扩展一个对象,并将其置于路径消息的策略数据中,用户建立业务时在该对象中提供针对某个或某些域的映射协商条件,可以提高业务在经过条件较差的域时的稳定性,提高条件较好的域的资源利用率,从 Object of the present invention is to provide a cross-domain service method for determining the mapping relationship between domains in the art, by extending the RSVP protocol in an object, and placed in a data path policy message, the service provider when the user established in the object for a map or negotiate conditions of some fields, can improve the stability of the business in the field after a poor condition, and better conditions to improve resource utilization domain, from

而减少管理与维护成本。 Reduce management and maintenance costs.

本发明的目的是通过以下技术方案实现的: Object of the present invention is achieved by the following technical solution:

5一种跨域业务域内域间映射关系的确定方法,包括: The method of determining the mapping relationship between one kind of cross-domain services within domain 5, comprising:

A、 域的入口点接收到承载有服务等级协商SLA映射对象信息的业务建立的路径消息; Entry point A, the received field carrying service level SLA service negotiation message mapping object path information established;

B、 结合所述SLA映射对象信息及每个节点配置的SLA所在域的协商策略数据确定跨域业务域内域间SLA映射关系。 B, negotiation strategies SLA data binding domain of the target SLA configuration information and mapping each node to determine the mapping relationship between SLA cross-domain services within a domain.

所述路径消息中承载的SLA映射对象信息通过扩展资源预留协议RSVP得到。 SLA map object information carried in the Path message obtained by extending a resource reservation protocol RSVP.

所述接收到的路径消息中的SLA映射对象信息包括:域ID、协商标志、最佳域内隧道SLA级别、最高域内隧道SLA级别、和最低域内隧道SLA级别。 SLA map object path information of the received message comprises: a domain ID, the Negotiation Flag, best art tunnel SLA levels, the highest level within the tunnel SLA, SLA, and the lowest level within the tunnel.

所述协商标志用于表示是否允许协商。 The negotiation flag indicating whether to allow consultations.

所述每个节点配置的SLA所在域的协商策略数据保存在本地数据中。 Negotiation policy data domain where the SLA of each node configuration is stored in local data. 所述节点上配置的SLA所在域的协商策略数据包括:本域所能接受的域内隧道最高SLA级别、及最低SLA级别和缺省级别。 Negotiation policy data domain where the SLA configured on the node comprising: the domain of the highest acceptable level within the tunnel SLA, SLA and the lowest level and the default level. 所述步骤B进一步包括: Said step B further comprising:

B1 、如果路径消息中不存在与当前域ID相同的域ID ,则按照当前域中的缺省级别确定SLA映射关系;或, B1, if the domain ID with the current ID field does not exist the same message path, it is determined according to the default mapping relationship between SLA level of the current domain; or,

B2、如果路径消息中存在与当前域ID相同的域ID,则结合所述当前域和所述与当前域ID相同的域ID的域中对当前域的限定来确定服务等级协商映射关系。 B2, if the path message is present in the same domain ID field current ID, the binding domain of the current service level and to determine the mapping relationship to negotiate the current domain defined in the same current domain ID the domain ID the domain.

所述步骤B2具体包括: The step B2 comprises:

B21、如果路径消息中协商标志为不允许协商,则采用此路径消息中的最佳级别作为确定的保护级别;如果所述最佳级别不在本域每个节点配置的SLA策略数据中,则建路失败;或, B21, if the path is not allowed to flag the message for negotiating the negotiation, the optimal level is used as the path message in the determined protection level; if the level is not the best policy SLA configuration data for each node in this domain, the construction Road failure; or,

B22、如果路径消息中协商标志为允许协商,而SLA映射对象与本域策略数据中对该域的限定不存在共同允许的保护级别,则建路失败;或, B22, if the path of negotiation message signs to allow consultations and SLA mapping objects and data in this domain policy in the domain limit allowed by the absence of a common level of protection, the road construction failed; or,

B23、如果路径消息中协商标志为允许协商,且存在一个共同允许的保护级别,则按照该级别建立域内隧道;如果存在多个共同允许的保护级别,则选择:路径消息中最佳级别、或本域策略数据中缺省级别、或其中与路径消息中规定的最佳级别差别最小的级别,或如果有多个差别最小的级别,则任选其一。 B23, if the path of negotiation message signs to allow negotiation, and there is a common level of protection to allow, within the tunnel is established in accordance with the level; if allowed more common level of protection exists, select: Path message, the best level, or this default domain policy level data, wherein the predetermined path, or the best level message minimal level difference, or if there are more differences in the minimum level, then choose one.

由上述本发明提供的技术方案可以看出,本发明实现了针对不同域配置不同的策略,提高了业务在经过条件较差域时的稳定性,及经过条件较好域时的资源利用率,从而降低了管理和维护的业务成本。 Provided by the present invention of the above it can be seen, the present invention implement different policies for different domain configuration improves the stability of poor traffic conditions when passing through the field, and through better resource utilization during field conditions, thereby reducing the cost of business management and maintenance.

附图说明 BRIEF DESCRIPTION

图l为现有技术层次网络示意图; Figure l is a schematic diagram of the prior art hierarchical network;

图2为现有技术端到端业务SLA与域内隧道SLA映射关系示意图;图3为本发明一种实施例操作流程图; FIG 2 is a schematic prior art end service SLA to SLA art tunnel mapping relationship; FIG. 3 for operating a flow diagram embodiment of the present invention;

图4为本发明一种实施例协商后的端到端业务SLA与域内隧道SLA映射关系示意图。 FIG 4 from end to end service SLA schematic mapping relationship after consultation with the embodiment of the present invention. Tunnel SLA art embodiment.

具体实施方式 detailed description

本发明的核心思想是提供一种跨域业务域内域间服务级别映射关系的确定方法,通过在RSVP协议中扩展一个对象,并将其置于路径消息的策略数据中,用户建立业务时在该对象中提供针对某个或某些域的映射协商条件,可以提高业务在经过条件较差的域时的稳定性,提高条件较好的域的资源利用率,从而减少管理与维护成本。 The core idea of ​​the present invention is to provide a cross-domain mapping between business service level within the domain determining method in an object by extending the RSVP protocol, and the message is placed in its path policy data, when the user establishes business object or provide a map for negotiation conditions of some fields, can improve the stability of the business in the field after a poor condition, and better conditions to improve resource utilization domain, thereby reducing management and maintenance costs.

本发明提供了一种跨域业务域内域间服务级别映射关系的确定方法,所述方法一种实施例才喿作流程如图3所示,包括如下步骤: The present invention provides a method of determining the mapping relationship between service-level inter-domain cross-domain service domain, only the method of Example 3 shown in FIG Qiao workflow, comprising the steps of:

7步骤l:在域的入口点接收到承栽有SLA映射对象信息的业务建立的路径消息时,在所述SLA映射对象中查找域ID与当前域ID相同的子对象; 7 Step l: when the domain entry point in the received Path message SLA commitments planted mapping object information service establishment in the same domain ID to find the current domain ID sub-object in the object mapping SLA;

用户通过在RSVP协议中扩展一个对象来承载SLA映射对象信息,可以釆用如下形式,但不限于该形式,只要扩展的内容包括表格中的内容即可: By extending a user in the RSVP protocol to carry the object mapping information SLA, it may preclude the use of the form, but not limited to this form, as long as the extended content comprises content to the table:

<table>table see original document page 8</column></row> <table> <Table> table see original document page 8 </ column> </ row> <table>

......(下一个i或6勺酉己置Configuration of Next Area ) 31 0 ...... (next 6 tablespoons or i-hexyl unitary set Configuration of Next Area) 31 0

上表中第一行所示的四个字节是现有RSVP协议中对象的标准头部,后面的所有内容为对象所携带的具体内容,每两^f于的八个字节为一个子对象; As shown in the above table the first four bytes of the standard line head, everything after the carried object is a content object existing RSVP protocol, eight bytes per two ^ f is a child in objects;

域ID(AreaID):占用四个字节,是指SLA映射的域的ID号; 协商标志(Agreement Flag):占用一个字节,可以^L定当最高位比特为l时,表示允许协商;0代表不允许,即用户只允许建立下面所述最佳级别的域内隧道;最低位为1代表SLA协商,其它位缺省为0,为以后其它协商预 Domain ID (AreaID): occupying four bytes, refers to an SLA ID number field mapping; Negotiation Flag (Agreement Flag): one byte may be set ^ L when L is a most significant bit, it indicates allow negotiation; 0 representatives do not allow that user only allowed to establish the following optimal level within the tunnel; 1 represents the lowest level for the SLA negotiation, other bits default is 0 for the future other pre-negotiated

留; stay;

最佳级别(Best Level):是指域ID所指域内用户希望的最佳域内隧道SLA级别; Optimal level (Best Level): refers to the domain user domain ID refers to the desired level within the tunnel SLA best;

最高级别(Highest Level):是指域ID所指域内用户所能接受的最高域内隧道SLA级别; The highest level (Highest Level): refers to the tunnel SLA highest level within the art referring to a user ID field acceptable;

最低级别(Lowest Level):是指域ID所指域内用户所能接受的最低域内隧道SLA级别;以上三种级别字段均占用一个字节,其值由高级别到低级别所能接受的 The lowest level (Lowest Level): refers to the lowest art tunnel user domain ID the domain referred SLA acceptable level; three levels or more fields each one byte, its value from high level to low level acceptable

值包括,^f旦不限于:Dedicated 1+1、 Dedicated 1: 1、 Shared、 Unprotected, Extra Traffic,具体值由现有标准定义,0也是可以接受的值,表示对此项无 Values, ^ f once limited to: Dedicated 1 + 1, Dedicated 1: 1, Shared, Unprotected, Extra Traffic, specific values ​​are defined by existing standards, the value 0 is also acceptable, for this represents no

要求; Claim;

上表中最后一行为对下一个域的配置,如果没有则不提供,如果有更多 The last row in the table configuration of the next field, is not provided if not, if there are more

也继续按以上结构添加,具体的数量可以由对象长度计算得知; 将上述扩展后的RSVP协议存储于路径消息中; Continues by adding the above configuration, the specific number may be calculated from the known length of the object; after the extended RSVP protocol message stored in the path;

预先在域内任一节点配置策略数据,并由路由模块洪泛到域内所有边界节点,并存于各数据库中; Pre-configured policy data on any node in the art, by the routing module flooded to all nodes in the domain boundaries, co-exist in each database;

策略数据包括但不限于:本域所能接受的域内隧道最高SLA级别、最低SLA级别,缺省级别,和/或运营商对特定源地址所做的特殊限定级别,例如:本域所能接受的最高级别为Dedicated 1+1,最低级别为Unprotected,对源地址为1.1丄1的业务只允许最高为Shared等; Policy data include but are not limited to: This field can accept the highest SLA level within the tunnel, the lowest level of SLA, the default level, and / or carrier levels do not particularly limited to a specific source address, for example: This field can accept the highest level Dedicated 1 + 1, the lowest level for the Unprotected, the source address of a business Shang 1.1 allows up to Shared etc;

步骤2:如果不存在域ID与本域ID相同的子对象,说明用户对此域没有要求,则按当前域的缺省级别建立域内隧道,如果当前域没有设定缺省级别,则使用现有技术建立域内隧道,确定保护级别; Step 2: If the domain ID and the domain of the same sub-object ID is not present, this field describes the user is not required, press the default current level domain established within the tunnel, if the current field is not set the default level of use now there are techniques to establish within the tunnel to determine the level of protection;

步骤3:如果存在域ID与本域ID相同的子对象,用户需求与软件做出协商,确定SLA映射关系; Step 3: If the domain ID and the domain of the same sub-object ID exists, the user needs to make a negotiation with the software, mapping relationship between SLA determined;

其协商过程存在如下情况: Its negotiation process there is the following:

假设用户配置的需求构成集合A,运营商配置的策略数据构成集合B, 假设用户配置的SLA最佳级别为Xo,最低级别为Xp最高级别为X2,运营商配置的策略数据中SLA缺省级别为Yo,最低级别为Yp最高级别为Y2,且X2 〉Xo》Xi, Y2》Yo》Y,,这里的大小关系由SLA保护级别高低决定的,即Dedicated 1+1 >Dedicated 1: 1 >Shared>Unprotected>Extra Traffic 。 The policy data is assumed that the needs of the user profile configuration set A, the configuration policy data carrier configuration set B, assuming that the optimum level SLA users is Xo, the lowest level to the highest level of Xp X2, operator-configured default level SLA as Yo, the lowest level to the highest level Yp to Y2, and X2> Xo "Xi, Y2" Yo "Y ,, where the size relationship between the level of protection by the SLA level decisions, ie Dedicated 1 + 1> Dedicated 1: 1> Shared > Unprotected> Extra Traffic.

基于以上假设,用户需求集合A的取值为:如果SLA映射子对象中协商 Based on the above assumptions, the user needs to set the value of A: If the SLA negotiation map subobject

9标志最高位为O,则表明用户不允许协商,A={Xq};否则A-(RIX,《R《 X2}。策略数据集合B的取值为:B-(RIY,《R《Y2,且R满足对该源地址所做的特殊限定}。 9 the most significant bit flag is O, indicates that the user is not allowed negotiation, A = {Xq}; otherwise, A- (RIX, "R" X2} policy data value B is set:. B- (RIY, "R" Y2 and R satisfies the source address} done particularly limited.

如果A与B交集为空,则协商不成功,返回建路失败;否则协商成功, 这时如果X。 If A and B the intersection is empty, then the negotiation fails, the return road construction failed; otherwise the negotiation is successful, then if X. 在该交集中,则返回Xo;如果Xq不在而Yo在,则返回Yo;两者都不在,则返回交集中与Xo级别相差最小的那个级别,如果有多个,则任选一个,然后"t姿现有流程完成业务的建立。 In this intersection, Xo is returned; and if not Xq in Yo, Yo is returned; neither in, intersection and difference Xo minimum level that the level is returned, if there are multiple, a is optionally, and " t pose existing processes complete the establishment of the business.

下面以图4中的具体实例对本方法进行说明: The following specific examples in FIG. 4 of the present method will be described:

在路径消息中的SLA映射对象内容如下,包舍两个子对象: SLA mapping objects in the Path message content is as follows, two sub-packets rounded objects:

<table>table see original document page 10</column></row> <table> <Table> table see original document page 10 </ column> </ row> <table>

对象长度为20,减去头部长度4,子对象总长度为16,说明有两个子对象。 Object length 20, minus the length of the head 4, the total length of the child object 16, the two sub-objects. 下面为建立外部端到端的Dedicated l+l业务时的情况: The following end to end to establish an external Dedicated l + l when business conditions:

CD2链路状态及外部环境均较好,用户为了减少费用,配置Shared为域内隧道SLA的最佳级别,运营商对该域的策略数据为允许最高SLA级别为Shared。 CD2 link status and external environment are good, in order to reduce user costs, configure Shared best level tunnel within the SLA, operator policy data in the domain to allow for the highest level SLA Shared. 建立第一条连接时,消息到达CD2入口的A节点,A节点读取SLA映射对象中的信息,查找到第一个子对象的域ID与CD2—致,说明用户针对本域做了协商条件,且协商标志为0x81,表明允许协商;获取子对象中的最佳级别、最高级别、最低级别,得到用户需求集合A-(Dedicated 1+1, Dedicated 1 : 1 , Shared},假定运营商策略数据集合B={Shared ,Unprotected , Extra Traffic},本例中运营商没有在该域对该业务源地址做特殊限定,A与B交集为{Shared},用户所配置的最佳级别-Shared在该交集中,所以协商成功,将该最佳级别做为本域的域内隧道SLA级别。 The first connection is established, the message reaches node A CD2 inlet, SLA A node reads map information object, find the first child domain ID and CD2- actuator described condition for a user to make the domain of consultation and negotiation flag is 0x81, indicates that allow negotiation; obtaining sub-object level best, highest level, the lowest level, users get a set of requirements A- (Dedicated 1 + 1, Dedicated 1: 1, Shared}, assuming that the operator's policy data set B = {Shared, Unprotected, Extra traffic}, in this case the operator does not do particularly limited in the source address field of the service, a to B of intersection {Shared}, configured by the user in the optimal level -Shared the intersection, so the negotiation is successful, the optimal level as the tunnel SLA level within this domain.

CD3的外部环境较差,用户配置了最佳域内隧道SLA为Dedicated 1+1, 运营商对该域的策略数据为最高只允许建立Dedicated 1: l的域内隧道。 CD3 poor external environment, the user has optimally within the tunnel as the SLA Dedicated 1 + 1, the domain policy data carriers is only allowed to build up to 1 Dedicated: l within the tunnel. 建立第二条连接时,消息到达CD3入口的B节点,B节点读取SLA映射对象中的信息,发现第二个子对象的域ID与CD3—致,说明用户针对本域做了协商条件,且协商标志为0x81,表明允许协商;获取子对象中的最佳级别、最高级别、最低级别,得到用户需求集合A-(Dedicated 1+1, Dedicated 1: 1, Shared},假定运营商策略数据集合B={Dedicated 1 : 1 , Shared , U叩rotected, Extra Traffic},本例中运营商没有在该域对该业务源地址做特殊限定,A与B交集为{Dedicated 1: 1, Shared},用户所配置的最佳级别-Dedicated l+l不在该交集中,而运营商未对该域配置缺省级别,所以在交集中选择与用户配置的最佳级别Dedicated l+l相差最小级别,即Dedicated 1: 1,则协商成功,将该Dedicated 1: l做为本域的域内隧道SLA级别。 Establishing second connection, the message reaches the inlet CD3 Node B, the Node B reads the SLA map object, CD3- discovery domain ID and the second child is induced, indicating the user condition for a consultation made this field, and consultations flag is 0x81, indicates that allow negotiation; obtaining sub-object level best, highest level, the lowest level, users get a set of requirements A- (Dedicated 1 + 1, Dedicated 1: 1, Shared}, assuming that the operator policy data collection B = {Dedicated 1: 1, Shared, U knock rotected, Extra traffic}, in this case the operators do not address the source domain service particularly limited, A and B of intersection {Dedicated 1: 1, Shared}, optimum level configured by the user -Dedicated l + l is not in the intersection, and the default carrier is not configured the domain level, the minimum level difference at the intersection of the selected user configuration best level Dedicated l + l, i.e., Dedicated 1: 1, then the negotiation is successful, the Dedicated 1: l as SLA tunnel within this level domains.

用户没对针对其它域做出协商条件,所以在这些域入口点,节点对SLA 映射对象不做任何处理,向下游继续转发。 The user does not make a consultation for other conditions on the field, so in these domains entry point for SLA node mapping object does nothing to forward to the downstream.

综上所述,本发明通过扩展RSVP协议,增加域的映射协商条件项,实现了针对不同域配置不同的策略,提高了业务在经过条件较差的域时的稳定性,及经过条件较好域时的资源利用率,从而降低了管理和维护的业务成本。 In summary, the present invention is by extending the RSVP protocol, negotiated condition items increases field mapping, implement different policies for different domain configuration improves operational stability when passing through the field of poor conditions, and better conditions after time domain resource utilization, thereby reducing the cost of business management and maintenance.

以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。 Above, the present invention is merely preferred specific embodiments, but the scope of the present invention is not limited thereto, any skilled in the art in the art within the scope of the invention disclosed can be easily thought of the changes or Alternatively, it shall fall within the protection scope of the present invention. 因此,本发明的保护范围应该以权利要求的保护范围为准。 Accordingly, the scope of the present invention should be defined by the scope of the claims.

ii ii

Claims (8)

  1. 1、一种跨域业务域内域间映射关系的确定方法,其特征在于,包括:A、域的入口点接收到承载有服务等级协商映射对象信息的业务建立的路径消息;B、结合所述服务等级协商映射对象信息及每个节点配置的服务等级协商所在域的协商策略数据确定跨域业务域内域间服务等级协商映射关系。 1 A cross-domain service method for determining inter-domain domain mapping relationship, wherein, comprising: A, domain entry point receives the Path message carries the service level negotiation object information map established; B, in combination with the negotiation strategy negotiation data domain where service level configuration of service level negotiation mapping object information and consultation to determine each node mapping relationship between cross-domain service level within the business domain.
  2. 2、 如权利要求l所述的一种跨域业务域内域间映射关系的确定方法,其特征在于,所述路径消息中承载的服务等级协商映射对象信息通过扩展资源预留协议RSVP得到。 2. A method as claimed in determining the mapping relationship between the l-domain within one of said cross-domain service claim, wherein said path map service level negotiation message carried in the object information obtained by extending a resource reservation protocol RSVP.
  3. 3 、如^5l利要求l或2所述的一种iE争域业务域内域间映射关系的确定方法, 其特征在于,所述接收到的路径消息中的服务等级协商映射对象信息包括: 域ID、协商标志、最佳域内隧道服务等级协商级别、最高域内隧道服务等级协商级别、和最低域内隧道服务等级协商级别。 3. claims l ^ 5l method for determining the mapping relation between the domain 2 or domain one kind iE contention domain service, wherein the service level negotiation object information mapping the received Path message comprises: Domain ID, negotiation flags, best service level consultations within the tunnel level, the highest level of service within the tunnel negotiation level, the lowest level within the tunnel and consultation service level.
  4. 4、 如^又利要求3所述的一种^争域业务域内域间映射关系的确定方法,其特征在于,所述协商标志用于表示是否允许协商。 4. A ^ and one of the claims 3 ^ method of determining a relationship between the competition within domain service domain mapping, wherein the negotiation flag for indicating whether to permit negotiation.
  5. 5、 如才又利要求4所述的一种5夸域业务域内域间映射关系的确定方法,其特征在于,所述每个节点配置的服务等级协商所在域的协商策略数据保存在本地数据库中。 5, just as they facilitate the mapping method of determining a relationship between the domain services within domain 4 boast one of the claim 5, characterized in that the negotiation strategy negotiation data domain where the service level of each node is stored in the local configuration database in.
  6. 6、 如^L利要求4所述的一种跨域业务域内域间映射关系的确定方法,其特征在于,所述节点上配置的服务等级协商所在域的协商策略数据包括:本域所能接受的域内隧道最高服务等级协商级别、及最低服务等级协商级别和缺省纟及别。 6, such as Li ^ L cross-domain service method for determining the mapping relationship between the domain-domain in claim 4, wherein the negotiated class of service negotiation policy domain data configuration of the node comprises: This field can be negotiate the highest level within the tunnel acceptable level of service, service level and the lowest level consultations and Si and do not default.
  7. 7、 如权利要求6所述的一种if争域业务域内域间映射关系的确定方法,其特征在于,所述步骤B进一步包括:B1 、如果路径消息中不存在与当前域ID相同的域ID,则按照当前域中的缺省级别确定服务等级协商映射关系;或,B2 、如果路径消息中存在与当前域ID相同的域ID,则结合所述当前域和所述与当前域ID相同的域ID的域中对当前域的限定来确定服务等级协商映射关系。 Method of determining if an inter-domain traffic contention domain domain as claimed in claim 6, the mapping relationship, wherein, the step B further comprising: B1, with the same domain ID field current If does not exist in the Path message ID, it is determined that negotiation of service level according to a default level mapping between the current domain; or, B2, if present in the path message, the current domain bind to the same domain ID and the domain ID of the current with the same current domain ID domain domain ID to define the current domain to determine the service level negotiation mappings.
  8. 8 、如;f又利要求7所述的一种跨域业务域内域间映射关系的确定方法,其特征在于,所述步骤B2具体包括:B21、如果路径消息中协商标志为不允许协商,则釆用此路径消息中的最佳级别作为确定的保护级别;如果所述最佳级别不在本域每个节点配置的服务等级协商策略数据中,则建路失败;或,B22、如果路径消息中协商标志为允许协商,而服务等级协商映射对象与本域策略数据中对该域的限定不存在共同允许的保护级别,则建路失败; 或,B23、如果路径消息中协商标志为允许协商,且存在一个共同允许的保护级别,则按照该级别建立域内隧道;如果存在多个共同允许的保护级别,则选择:路径消息中最佳级别、或本域策略数据中缺省级别、或其中与路径消息中规定的最佳级别差别最小的级别,或如果有多个差别最小的级别,则任选其一。 8, such as; Lee F and a method for determining a relationship between the cross-domain service is mapped within domain according to claim 7, wherein the step B2 comprises: B21, if the path message is not allowed to negotiate the negotiation flag, preclude the use of this path the message level as the best protection level determination; if the level is not the best grade of service negotiation policy configuration data for each node in this domain, the path establishment fails; or, B22, if the path message in consultation flag to allow negotiation, consultation and service level mapping object and policy data defined in this domain the domain does not exist to allow a common level of protection, the road construction failed; or, B23, if the path of negotiation message signs to allow consultation and there is a common level of protection to allow, within a tunnel is established in accordance with the level; if a plurality of common allowable level of protection exists, select: path message optimum level, this domain policy or default level data, or wherein the minimum level, or if there are multiple level minimum-difference level difference between the best path and the predetermined message, the submission.
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