CN101207505B - Method for operating, maintaining , managing and looping for asynchronous transfer mode network cross-equipment - Google Patents

Method for operating, maintaining , managing and looping for asynchronous transfer mode network cross-equipment Download PDF

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CN101207505B
CN101207505B CN 200610165781 CN200610165781A CN101207505B CN 101207505 B CN101207505 B CN 101207505B CN 200610165781 CN200610165781 CN 200610165781 CN 200610165781 A CN200610165781 A CN 200610165781A CN 101207505 B CN101207505 B CN 101207505B
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cell
node
step
edge
loopback
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CN101207505A (en )
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王庆东
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中兴通讯股份有限公司
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The invention discloses a method which can carry out network inter-equipment operation through the asynchronous transfer mode to maintain and manage circulating, and the method is invented to solve the problem existing in the prior art that the inter-equipment fault location cannot be carried out. The invention comprises the following steps: firstly, an information cell which can transmit all nodes in the network in an unvarnished way are allocated on a network manager, the information cell is sent out by a source node, and the adjacent nodes of different equipment are allocated with edge nodes; secondly, whether the information cell needs to circulate at the node is judged after the node receives the information cell, if the judging result is positive, the information cell is circulated,and the step is over; if the judging result is negative, the step three is entered; thirdly, whether the node is the edge node of the adjacent equipment of the equipment is judged, if the judging result is positive, the step four is entered; if the judging result is negative, the information cell is transmitted to the next node in an unvarnished way, and the step two is repeated; fourthly, the information cell sent out by the source node is circulated at the edge node. The invention is able to carry out the fault location of the network inter-equipment.

Description

异步传输模式网络跨设备进行操作维护管理环回的方法 ATM network operation and maintenance management across devices loopback methods

技术领域 FIELD

[0001] 本发明涉及异步传输模式网络,特别涉及异步传输模式网络跨设备进行操作维护 [0001] The present invention relates to ATM networks, and more particularly to an asynchronous transfer mode network operation and maintenance equipment across

管理环回的方法。 Management loopback. 背景技术 Background technique

[0002] 操作维护管理(0AM)是一种异步传输模式(ATM)带内的管理信息,是在ITU-T 建议I. 610(11/95)和Bellcore GR-1248-C0RE.中进行定义的一系列的标准,主要实现ATM维护管理的四个功能,包括:错误管理(faultmanagement),性能管理(Performance Management),激活/去激活(Activation/Deactivation),系统管理(System Management) [0003] 其中,环回(loopback)环回属于错误管理功能的一种,它的实现机制就是在链路(VPC/VCC)的一个访问点插入环回信元(LB cell),该插入不会中断用户信元序列(sequenceofuser cells),也就是业务信元。 [0002] OAM (0AM) is an asynchronous transfer mode (ATM) management information in the band is defined in ITU-T Recommendation I. 610 (11/95) and Bellcore GR-1248-C0RE. In a series of standards, the main achievement of four ATM maintenance management functions, including: fault management (faultmanagement), performance management (performance management), activation / deactivation (activation / deactivation), system management (system management) [0003] in which loopback (loopback) loopback belonging to error management capabilities, its implementation mechanism is inserted into the loop back cell (LB cell) in the link (VPC / VCC) of an access point, the insertion does not interrupt the user cell sequence (sequenceofuser cells), i.e. traffic cell. 然后根据环回信元本身所携带的信息在下游的某个节点该信元被环回(loopback),如下表1和表2所示,分别为环回信元的格式和环回检测信元域的功能。 The information element is then loop back on itself carries a node downstream of the cell loopback (Loopback), as shown in Table 1 and Table 2, respectively, and the format loop back loop detection element of the cell field Features. [0004] [0004]

<table>table see original document page 3</column></row> <table><table>table see original document page 4</column></row> <table>[0007] 表2 <Table> table see original document page 3 </ column> </ row> <table> <table> table see original document page 4 </ column> </ row> <table> [0007] TABLE 2

[0008] 如图1所示,为在同一设备制造商提供的设备之间进行OAM环回的示意图, EndpointA和EndpointB之间,在Nodel插入环回信元,LBLID设置为Node3,因为是从source发出的信元,因此在Nodel其LBIND为00000001 ;该环回信元在Node3处被识别(LBLID和Node3本地所保存的节点ID —致),并被环回,向上游发送。 [0008] 1, to perform OAM between the device between the same device manufacturer loopback schematic, EndpointA and EndpointB, Nodel insert ring back cell, LBLID Node3 set, because it is emitted from the source information element, and therefore it LBIND 00000001 Nodel; the loop back cell is identified at Node3 (LBLID Node3 and locally stored node ID - induced), and loop-back, sent upstream. 由于是已经被环回的信元,因此其LBIND为00000000。 Because it is has been looped back cell, therefore LBIND 00000000. 我们可以看到,能够环回的重点是LBLID与节点本身所设置并保存的LOCAL ID相匹配,只有它们相等,信元才能被环回;否则要么透传,要么被丢弃。 We can see that the focus can be looped back to the node itself is LBLID set and saved LOCAL ID match, only they are equal, the cell in order to be loopback; or otherwise pass through or be discarded.

[0009] 这样的机制存在一个问题。 There is a problem [0009] such a mechanism. LBLID是用户在网管上根据一定的规则设置的ID,它跟设备制造商的实现方式有很大的关系。 LBLID ID is set by the user on the network according to certain rules, it has a great relationship with the implementation of the equipment manufacturer. 比如说在ATM交换设备上,LBLID就是根据网元ID、单板ID综合生成的。 For example, in the ATM switching equipment, LBLID is based on the NE ID, board ID comprehensive generated. 网元ID+单板ID能够唯一表示一个节点,因此它是合理的。 NE ID + boards can be uniquely indicates a node ID, so it is reasonable. 但是不同的设备制造商可能会有不同的实现方式,这在ATM的相关协议里面并没有做强制性的定义,因此在不同设备组网的网络边缘,环回功能是无法实现的。 But different manufacturers devices may have different implementations, this does not make mandatory defined inside the ATM related protocols, different devices at the network edge networking, loopback function can not be achieved. 这对网络故障的定位带来了一定的限制。 This brings certain restrictions on locating network faults. 如网络设备N0DE1、N0DE2、N0DE3由Provider 1提供,N0DE4、N0DE5、N0DE6 由Provider2提供,现在假设N0DE2与N0DE6之间的通信出现故障,需要定位故障出现的具体位置,可以通过在N0DE2上进行逐段环回的方式来定位。 The network device N0DE1, N0DE2, N0DE3, N0DE4, N0DE5, N0DE6 by Provider2 are provided by the Provider 1, it is now assumed that the communication between the N0DE2 and N0DE6 fails, locate the specific location of the failure, can be performed on a segment by segment N0DE2 loopback way to locate. 首先在N0DE2上发送至N0DE3的环回信元(配置LBLID为N0DE3的节点ID) ,N0DE3在接收到这个环回信元后会比较LBLID 是否与自己的本地节点ID相一致,如果一致就会环回这个信元,如果N0DE2能够接收到返回的环回信元,说明N0DE2与N0DE3之间的链路是0K的,需要继续定位N0DE3与N0DE4之间的链路。 On the first transmission to N0DE3 N0DE2 the loop back cell (configured as N0DE3 LBLID node ID), whether N0DE3 compares LBLID consistent with its own local node ID after receiving the loop back cell, if the same will loopback cell, if N0DE2 can receive a return reply membered ring, and indicates that the link between N0DE2 N0DE3 is 0K, the need to locate between the link and N0DE3 N0DE4. 但是,由于Provider 1和Provider 2都使用自己的网管软件管理设备,在N0DE2 是不知道N0DE4的LBLID,也不知道N0DE2节点ID的设置规则(即使知道,也可能在网管上无法自由),那么这个环回就没有办法配置下去,网络边缘(N0DE3与N0DE4之间)的故障就无法定位出来。 However, due to the Provider 1 and Provider 2 uses its own management software, network management equipment, N0DE2 LBLID N0DE4 do not know, do not know the rules N0DE2 set node ID (even if they know, it may not be free on the network), then this loopback is no way to configure it, network fault edge (between N0DE3 and N0DE4) would not locate it.

发明内容 SUMMARY

[0010] 为了克服现有技术的缺陷和不足,本发明的目的在于提供一种异步传输模式网络跨设备进行操作维护管理环回的方法,能够解决在网络边缘实现环回功能的需求,实现跨网络设备的故障定位。 [0010] In order to overcome the drawbacks and disadvantages of the prior art, an object of the present invention is to provide a method for ATM network OAM loopback across devices, can be implemented to address the needs of the loopback at the network edge, cross- fault location network equipment.

[0011] 为了达到上述目的,本发明一种异步传输模式网络跨设备进行操作维护管理环回的方法,包括以下步骤: [0011] To achieve the above object, the present invention is an asynchronous transfer mode network device operating across loopback maintenance management method, comprising the steps of:

[0012] (1)在网管上配置源节点发送的能够透传本网络所有节点的信元,信元中的LBLID值配置为与本网络中所有节点的本地ID值不一致,并配置不同设备的相邻节点为边缘节点,相邻两个边缘节点相连的端口为边缘接口; [0012] (1) Configuration transmission source node in the network can be transparently transmit the present network all the nodes of the cell, LBLID value information element is configured to a value inconsistent with this network, the local ID of all nodes, and configure the different devices edge node to node port, the adjacent edges of two adjacent nodes connected to the edges of the interface;

[0013] (2)节点接收到该信元后,根据信元中的LBLID值和收到该信元的节点的本地ID 是否一致判断该信元是否需要在收到该信元的节点环回,如果判断结果为是,则环回该信元,步骤结束;如果判断结果为否,则进入步骤(3); [0013] (2) node after receiving the cell, the cell according to the value of LBLID receive a local node ID and the cell is consistent node determines whether the cell requires the cell received loopback If the determination result is YES, then loop back to the cell, the step ends; if the determination result is NO, the process proceeds to step (3);

[0014] (3)判断收到该信元的节点是否为本设备的相邻设备边缘节点和该信元是否经过边缘接口,如果判断结果为是,进入步骤(4);如果判断结果为否,则透传该信元到下一个节点,返回步骤(2); [0014] (3) the node determines whether the received cell-based device node and the adjacent edge of the device through the edge of the cell if the interface, if the judgment result is yes, proceeds to step (4); if the determination result is NO , then pass through the cell to the next node returns to step (2);

[0015] (4)在该边缘节点将该源节点发送的信元进行环回。 [0015] (4) loopback cell in the edge node of the transmission source node. [0016] 作为本发明的进一步改进,所述步骤(2)具体为: [0016] As a further improvement of the present invention, the step (2) is specifically:

[0017] (21)节点收到该信元后,判断该信元的LBLID值和节点的本地ID是否一致,如果一致,则进入步骤(22);如果不一致,则进入步骤(3); After [0017] (21) The node receives the cell, it is determined whether the local node ID LBLID values ​​and the same cell, if yes, proceeds to step (22); if not, the process proceeds to step (3);

[0018] (22)判定该信元明确要求在该节点环回,向上游方向环回该信元。 [0018] (22) determines that the cell requires explicit loopback at the node, loop back to the cell in the upstream direction. [0019] 作为本发明的进一步改进,所述步骤(3)具体为: [0019] As a further improvement of the present invention, the step (3) is specifically:

[0020] (31)判断该节点是否为边缘节点,如果判断结果为是,则进入步骤(32);如果判断结果为否,则透传该信元到下一个节点,返回步骤(2); [0020] (31) determines whether the node is an edge node, if the determination result is YES, the process proceeds to step (32); if the determination result is NO, the transparently transmit the cell to the next node returns to step (2);

[0021] (32)判断该信元是否经过边缘接口,如果判断结果为是,则进入步骤(4);如果判断结果为否,则透传该信元到下一个节点,返回步骤(2)。 [0021] (32) determines whether the cell via the edge interface, if the judgment result is YES, the process proceeds to step (4); if the determination result is NO, the transparently transmit the cell to the next node returns to step (2) . [0022] 作为本发明的进一步改进,所述步骤(4)具体为: [0022] As a further improvement of the present invention, the step (4) is specifically:

[0023] (41)在该边缘节点检查该信元,如果该信元中LBIND的值为ObOOOO 0001,则环回该信元并同时修改该信元中LBIND的值为ObOOOO 0000。 [0023] (41) checks the cell in the edge node, if the value of the cell in LBIND ObOOOO 0001, then loop back to modify the cell while the cell is in the LBIND ObOOOO 0000.

[0024] 采用上述的方法后,通过配置能够透传本网络所有节点的信元和边缘节点,在该信元由本设备经过透传到达相邻设备的边缘节点时进行环回,能够解决在网络边缘实现环回功能的需求,达到跨网络的故障定位的目的。 [0024] With the above method, the configuration can transparently transmit the present network all the nodes of the cell and the edge node in the cell by the apparatus through passthrough loopback reaches edge node adjacent devices can be solved in the network edge realize loopback needs to achieve the purpose of the network across the fault location.

附图说明 BRIEF DESCRIPTION

[0025] 图1为同一设备制造商提供的设备之间进行0AM环回的示意图; [0026] 图2为本发明中不同设备之间网络边缘进行0AM环回的示意图; [0027] 图3为本发明中实现不同设备之间网络边缘OAM环回的具体流程图。 [0025] FIG. 1 is a schematic 0AM loopback performed between devices of the same device manufacturer to; [0026] FIG. 2 is a schematic diagram 0AM loopback network between different devices edges invention; [0027] FIG. 3 is a DETAILED flowchart network edge devices between different OAM loopback of the present invention is implemented.

具体实施方式 detailed description

[0028] 下面结合附图对本发明的具体实施方式作进一步详细说明。 [0028] The following drawings of specific embodiments of the present invention are described in further detail in conjunction.

[0029] 本发明是在网管上配置源节点发送的能够透传本网络所有节点的信元,并配置不同设备的相邻节点为边缘节点,相邻边缘节点连接的端口为边缘接口,这样,信元在到达本设备相邻设备的边缘节点时,就环回该信元。 [0029] The present invention is able to transparently transmit configuration information elements sent by the source node to all nodes of this network, and configure the neighboring node device is a different edge node, an edge port connected to the nodes adjacent to the edge of the network management interfaces, which, cell upon reaching the edge node device adjacent to the present device, on the loop-back cell.

[0030] 如图2所示,为本发明中不同设备之间网络边缘进行0AM环回的示意图,网络设备N0DE1、 N0DE2、 N0DE3由Provider 1 (Pl)提供,N0DE4、 N0DE5、 N0DE6由Provider2 (P2)提供,如果N0DE2与N0DE6之间的通信出现故障,需要定位故障出现的具体位置,可以通过在N0DE2上进行逐段环回的方式来定位,在N0DE2上发送至N0DE3的环回信元(配置LBLID为N0DE3的节点ID) ,N0DE3在接收到这个环回信元后会比较LBLID是否与自己的本地节点ID 相一致,如果一致就会环回这个信元,如果N0DE2能够接收到返回的环回信元,说明N0DE2 与N0DE3之间的链路是0K的,之后在N0DE2上发送至N0DE4的环回信元(配置LBLID的值不为N0DE1、N0DE2、N0DE3的任意节点ID的值),N0DE3在接收到这个环回信元后会比较LBLID是否与自己的本地节点ID相一致,如果不一致就会判断该节点是否是边缘节点,该信元是否经过边缘接口,如果没有 [0030] As shown, the present invention is a network schematic edges 0AM loopback network device N0DE1, N0DE2, N0DE3 by Provider 1 (Pl) between different devices 2, N0DE4, N0DE5, N0DE6 a Provider2 (P2 ) provided, and if the communication between N0DE2 N0DE6 fails need to locate the specific location of the failure can be performed by the loopback piecewise manner on N0DE2 to locate, on N0DE2 to transmit a reply membered ring N0DE3 (configuration LBLID the node ID is N0DE3), in N0DE3 whether it would be more consistent with LBLID own local node ID after receiving the loop back cell, if the same will loopback cell, if N0DE2 can receive a return reply membered ring, It indicates that the link between the 0K N0DE2 and N0DE3 is, after transmitting the loop back cell to N0DE4 (configuration value is not LBLID N0DE1, N0DE2, arbitrary node ID of N0DE3) on N0DE2, N0DE3 the receiving ring whether it would be more consistent with LBLID own local node ID after back cell, and if not it will determine whether the node is an edge node, if the cell edge through the interface, if not 过,则透传该信元到N0DE4, N0DE4在接收到这个环回信元后会比较LBLID是否与自己的本地节点ID相一致,如果不一致就会判断该节点是否是边缘节点,该信元是否经过边缘接口,如果既是边缘节点又通过了边缘接口,则环回这个信元,通过这样的方法就可以检测到不同设备之间通信出现故障的具体位置。 Too, is transmitted through the cell to N0DE4, N0DE4 LBLID whether it would be more consistent with its own local node ID after receiving the loop back cell, and if not will be determined whether the node is an edge node, whether or not through the cell edge interface, and if both the edge node by edge interface, the loopback cell, the specific location can be detected a communication failure between different devices by such methods. [0031] 本发明是通过在网管上配置源节点发送的LBLID,使该环回信元能够透传本网络的所有节点;并配置不同设备的相邻节点为边缘节点,它与以前的处理流程唯一不同的就是对"LBLID与本地ID "不同时的处理方式上,本发明在检测到不一致时,不会马上透传这个信元,而是先判断本节点是否是边缘节点,收到该信元的接口是否连接网络边缘,如果不是,才会向下游透传;否则将被环回。 [0031] The present invention is transmitted through LBLID network management configuration on the source node, all nodes so that the loop back can be transparent transmission element of the present network; configure different neighboring node device is an edge node, its only previous processing flow is different on the "LBLID local ID" approach is not simultaneous, the present invention is an inconsistency in the detection, this will not immediately pass through the cell, but first determines whether the node is an edge node receives the cell whether the edge of the network interface, if not, will pass through to the downstream; otherwise loopback. 是否是边缘节点是通过网管事先配置好的。 It is an edge node is pre-configured by the NMS. [0032] 本发明需要配置N0DE4和N0DE3为边缘节点,在边缘节点上实现一系列的规则。 [0032] The present invention requires the configuration and N0DE3 N0DE4 edge node, to achieve a set of rules on the edge node. 本步骤又可以包括下列步骤: This step may further comprise the steps of:

[0033] (1)定义边缘节点和处于网络边缘的接口。 [0033] (1) defines an interface at the edge node and the network edge. 该接口连接不同厂商的设备,从该接口接收到的环回信元一定是从其他设备提供商的设备发送来的。 The interface connection devices of different vendors, receives from the interface to the loop back cell from other devices must be transmitted provider device. 比如在这个例子中定义N0DE4上与N0DE3相连接的端口为边缘端口, N0DE4收到的环回信元一定是经由N0DE3发送过来的。 For example in this case is defined N0DE4 and N0DE3 port is an edge port connected to the ring element N0DE4 received reply must be sent over via N0DE3.

[0034] (2)在边缘节点上检查这个环回信元,如果其LBIND为0b00000001,说明是从Source发出的信元,就直接环回这个信元,同时修改LBIND为0b00000000。 [0034] (2) on the edge node checks the loop back cell, if it is LBIND 0b00000001, cell description is sent from the Source, the direct loopback cell, to also modify LBIND 0b00000000. 在此处必须检查LBIND,否则有可能环回信元在N0DE3和N0DE4之间不断的环回,成为死循环。 Must be checked LBIND here, or they may loop back cell constant loop-back between N0DE3 and N0DE4, become an endless loop. 在边缘节点上不检查LBLID是否与本地的ID相匹配,即使不匹配的环回信元如果满足了(1)和(2) 两个条件也是可以被环回的。 LBLID does not check whether the ID matches the local node on the edge, without matching loop back cell if satisfying the expression (1) and (2) are two conditions that can be looped back.

[0035] 本发明在配置源节点发送的能够透传本网络所有节点的信元,就是N0DE2上所需要做的配置就是将LBLID设为为Y, Y表示这个环回信元的目的节点不为本网络中的任何一个节点。 [0035] capable of penetrating this network of all nodes transmit the cell configuration of the present invention is transmitted in a source node, is the need to do N0DE2 LBLID is to set the configuration to Y, Y represents a loop back cell of the destination node is not present any node in the network. 本网络的节点包括N0DE1、 N0DE2、 N0DE3,那么我们只需配置LBLID不为上述三个节点的本地ID的任何一个值。 This network includes nodes N0DE1, N0DE2, N0DE3, we not only need to configure any value LBLID local ID of the three nodes. 这样的话N0DE3就会透传这个环回信元,并送至N0DE4,在N0DE4上实现了环回。 In this case N0DE3 will pass through the loop back cell and sent N0DE4, realized the ring back on N0DE4. 如果N0DE3上接收返回的环回信元超时,说明N0DE3和N0DE4之间的链路有问题;否则说明故障出现在P2的网络设备中。 If the N0DE3 receiving the return loop back cell timeout, the link between N0DE3 and N0DE4 problems; otherwise described failure occurs in the network device P2.

[0036] 如图3所示,本发明在配置完信元和边缘节点以及边缘接口后,进行信元环回的处理步骤,包括以下流程: [0036] As shown in FIG. 3, the present invention After configuring the cell edge and edge nodes and interfaces, the processing step of cell loopback, the process comprising:

[0037] (101)节点芯片接收到0AM环回信元,通过CPU接口上报至软件处理;[0038] (102)判断该信元的LBLID是否与该节点的本地ID—致,如果判断结果为否,则进入步骤(103);如果判断结果为是,则进入步骤(4); [0037] (101) receives the chip 0AM node loop back cell, reported to the software processed by the CPU interface; [0038] (102) determines whether the cell is activated LBLID ID- the local node, if the determination result is NO , the process proceeds to step (103); if the determination result is YES, the process proceeds to step (4);

[0039] (103)判断该节点是否是边缘节点,并判断该信元是否通过边缘接口,如果判断结 [0039] (103) determines whether the node is an edge node, and determines whether the cell edge by the interface, if the judgment result

果为是,则进入步骤(106);否则,进入步骤(105); If YES, the process proceeds to step (106); otherwise, proceeds to step (105);

[0040] (104)确定该信元需要在本节点进行环回,进入步骤(106); [0040] (104) determines the cells need to be present in the loopback node, proceeds to step (106);

[0041] (105)不修改OAM信元所携带的任何信息,向下游节点透传该信元,步骤结束; [0041] (105) any information carried by OAM cell is not modified, transmitted to a downstream node through the cell, the step ends;

[0042] (106)修改环回信元的LBIND为ObOOOOOOOO,并从接收端口向上游方向发送该信元。 [0042] (106) modified to loop back cell LBIND ObOOOOOOOO, and port to send the cell received from the upstream direction.

[0043] 本发明通过配置能够透传本网络所有节点的信元和边缘节点,在该信元由本设备经过透传到达相邻设备的边缘节点时进行环回,能够解决在网络边缘实现环回功能的需求,达到跨网络的故障定位的目的。 [0043] By configuring the present invention can be transparently transmit the present network all the nodes of the cell and the edge node in the cell by the apparatus through passthrough loopback when reaching the adjacent device edge node can be solved implemented at the network edge loopback demand functions to achieve the purpose of the network across the fault location.

Claims (4)

  1. 一种异步传输模式网络跨设备进行操作维护管理环回的方法,其特征在于,包括以下步骤:(1)在网管上配置源节点发送的能够透传本网络所有节点的信元,信元中的环回位置ID(LBLID)值配置为与本网络中所有节点的本地ID值不一致,并配置不同设备的相邻节点为边缘节点,相邻两个边缘节点相连的端口为边缘接口;(2)节点接收到该信元后,根据信元中的LBLID值和收到该信元的节点的本地ID是否一致判断该信元是否需要在收到该信元的节点环回,如果判断结果为是,则环回该信元,步骤结束;如果判断结果为否,则进入步骤(3);(3)判断收到该信元的节点是否为本设备的相邻设备边缘节点和该信元是否经过边缘接口,如果判断结果为是,进入步骤(4);如果判断结果为否,则透传该信元到下一个节点,返回步骤(2);(4)在该边缘节点将该源节点发送的信元进行 One kind of ATM network equipment across OAM loopback method is performed, characterized by comprising the steps of: a cell (1) on the network can be transparently transmit all network nodes according to the present configuration of the transmission source node, the cell the loopback location ID (LBLID) configured value inconsistent with this local network ID values ​​of all nodes, and different devices arranged adjacent nodes is an edge node, the adjacent edges of two nodes connected to the interface port edge; (2 ) node after receiving the cell, the cell according to the value of LBLID receive a local node ID and the cell is consistent determines whether the cell requires cell node receiving the loopback, if the determination result is , the rings back to the cell, the step ends; if the determination result is NO, the process proceeds to step (3); (3) the node determines whether the received cell-based equipment and the edge node device adjacent cell whether through the edge interface, if the judgment result is yes, proceeds to step (4); if the determination result is NO, the transmission through the cell to the next node returns to step (2); (4) the source of the edge node sent by the cell node 回。 Back.
  2. 2. 按照权利要求1所述的异步传输模式网络跨设备进行操作维护管理环回的方法,其特征在于,所述步骤(2)具体为:(21) 节点收到该信元后,判断该信元的LBLID值和节点的本地ID是否一致,如果一致,则进入步骤(22);如果不一致,则进入步骤(3);(22) 判定该信元明确要求在该节点环回,向上游方向环回该信元。 2. The ATM network as claimed in claim 1, said method OAM loopback across devices, wherein said step (2) specifically comprises: (21) receives the cell nodes, which is determined whether the local ID cell LBLID and knot coincide, if yes, proceeds to step (22); if not, the process proceeds to step (3); (22) determines the cell clearly requires loopback at the node to the upstream the direction of the loop-back cell.
  3. 3. 按照权利要求2所述的异步传输模式网络跨设备进行操作维护管理环回的方法,其特征在于,所述步骤(3)具体为:(31) 判断该节点是否为边缘节点,如果判断结果为是,则进入步骤(32);如果判断结果为否,则透传该信元到下一个节点,返回步骤(2);(32) 判断该信元是否经过边缘接口,如果判断结果为是,则进入步骤(4);如果判断结果为否,则透传该信元到下一个节点,返回步骤(2)。 3. The ATM network as claimed in claim 2, the method of operating a cross-loopback maintenance equipment, wherein said step (3) specifically comprises: (31) determines whether the node is an edge node, if it is determined result is YES, the process proceeds to step (32); if the determination result is NO, the transparently transmit the cell to the next node, returns to the step (2); (32) determines whether the cell whether via the edge interface, if the determination result is yes, go to step (4); if the determination result is NO, the transmission through the cell to the next node returns to step (2).
  4. 4. 按照权利要求3所述的异步传输模式网络跨设备进行操作维护管理环回的方法,其特征在于,所述步骤(4)具体为:(41)在该边缘节点检查该信元,如果该信元中环回指示(LBIND)的值为0b00000001, 则环回该信元并同时修改该信元中LBIND的值为0b00000000。 4. The ATM network as claimed in claim 3, said method OAM loopback across devices, wherein said step (4) specifically comprises: (41) checks the cell at the edge node, if the loopback indication information element (LBIND) value 0b00000001, then loop back to modify the cell while the cell is in the LBIND 0b00000000.
CN 200610165781 2006-12-18 2006-12-18 Method for operating, maintaining , managing and looping for asynchronous transfer mode network cross-equipment CN101207505B (en)

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