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Method and system for preventing service misconnection in ason network. RU patent 2500076. |
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IPC classes for russian patent Method and system for preventing service misconnection in ason network. RU patent 2500076. (RU 2500076):
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FIELD: radio engineering, communication. SUBSTANCE: method of preventing service misconnection in an automatically switched optical network comprises the following steps: A) the control plane configures service error prevention information in a transport plane; B) upon detecting a misconnection, the transport plane sends a misconnection warning message to the control plane based on said service error prevention information; C) after receiving the described misconnection warning message, the control plane obtains a policy to prevent the service error resulting in the misconnection warning signalling, and performs the corresponding error prevention operation; wherein the described error prevention policy is a rerouting policy or a secure switching policy, and the error prevention information of the initial connection is referenced to in the new service connection. EFFECT: high rate of configuring service error prevention information. 10 cl, 9 dwg
The technical field The present invention relates to the field of optical communications, in particular relates to a method and system to prevent incorrect connection services in optical networks automatically switched (Automatically Switched Optical Network, ASON). The level of technology With the development of network technologies and increase the amount of network traffic put forward higher requirements to the characteristics of the transportation network: by adding the protocols of automatic control in the optical region are intelligent optical network properties to ensure that the network had more flexible structure, flexible and unified management, the higher efficiency of the use of the band and the high level of survival and extensibility, with the proposal of dynamical connection and intelligent planning. Thus, the optical network automatically switched appeared. Network ASON consists of the control plane, the transport plane, network, data Communication Network, DCN) and the panel of management. The ASON network shall be a separation of functions of the control plane and the transport plane. Control plane is designed to create a connection to transport the plane by using the routing signal and to perform the recovery when the failed connection, and transport plane for transportation services and fault detection. A data network intended for the communication of signal control plane. The plane of the management is to manage the configuration of the control plane and the transport plane. In cases when the network ASON services provided to the ring with a joint redundant multiplex sections (Multiplex Section Shared Protection Ring, MS-SPRing, when a node failure or malfunction multispan (multi-span) of section arise in a ring with a joint redundant multiplex sections, this can lead to wrong connection services. This requires from a transport plane run error prevention by configuring the messages on the prevention of errors tract. For example, to prevent errors with the help of an alarm TIM (ID mismatch track)generated by bytes ID trails tract Jx. Thus, the control plane can perform the following operations (as ) at the prevailing faulty as services. For simplicity, we consider that in the present invention of the meanings of the expressions «configure bytes Jx» and «configure message on the prevention of errors» are identical. Technology to prevent wrong connections on the transport plane of the basis for that control plane can automatically configure. At the present time the above-mentioned technology provides error prevention through configuring alarms bytes Jx. Traditional ways to prevent wrong connections is that the prevention of incorrect connections are configured in the plane of management on transport plane, the traditional methods are characterized by inefficiency and inability to make rapid and automatic configuration. For example, in a specific service recovery occurs: if you are configuring bytes Jx only after notice about the above case, the management plane, then, is not ensured recovery time, and this recovery remains without meaning. Thus, there is a need to configure bytes Jx to ensure normal operation. The ASON network implementation fast, automatic and secure configuration is necessary. However, today there are no adequate technology to prevent wrong connections in the field of ASON. Disclosure of the invention In connection with the above, the main objective of this invention is to provide a way to prevent incorrect connection services in the ASON network, which is designed to solve such an issue in which the use of traditional method leads to inability to make a quick automatic configuration and low efficiency, etc. To achieve the above mentioned objective, the technical feasibility of the invention is realized as follows. A way to prevent incorrect connection services in optical networks automatically switched, contains: Step A: control plane configures the transport plane of information on the prevention of errors services; Step A: according to the mentioned information on the prevention of errors services, detecting incorrect connection, the transport plane reported to the control plane warning message about incorrect connection; Step: after receiving described the warning message about incorrect connection control plane gets a policy to prevent errors services that generate warning indication the wrong connection, and performs relevant operations prevent errors. Next step where control plane configures the transport plane of information on the prevention of errors services contains: Step A1: after receiving information about prevention of errors services control plane first or the target host, the service sends a request to the configuration in its transport plane; Step A2: first or destination node services running operation configuration information about prevention of errors services, BelTA site services described information on the prevention of errors services; Step A3: after receiving the information described preventing errors services described nasty site services sends a request to the configuration of the transport plane of the local host; Step 4: after a successful configuration described information about prevention of errors services described first and destination nodes services report to the plane of the control message about a successful configuration. Next, described information on the prevention of errors services implies byte route path, when the configuration is described byte route tract control plane must set the value of the parcel and the expected value. The setup method is the following. For unidirectional services at the direction of transmission of the first node services is set to the parcel, and the direction of a target host services set to the expected value, moreover, these values are identical. For bidirectional services, on the direction of transmission of the first and the end-nodes services is set to the parcel, and the direction of receiving the aforementioned nodes set to the expected value, moreover, these values are identical. Next, the first or destination node that runs the operation configuration information about prevention of errors services, using a message Notify the RSVP Protocol or message OEM Protocol LMP to download the mentioned information on the prevention of errors services and passes last service site. Further, this policy is to avoid mistakes is a strategy for recovery , and specifically, step contains: Step 11: the transport plane warning message about incorrect connection control plane detects service, begetting warning indication wrong connection; Step 12: control plane gets a strategy to prevent errors services that generate warning indication the wrong connection, and creates the restored connection; Step C13: for information on preventing errors services of the parent compound in the restored connection control plane configures the described information on the prevention of errors services in the transport plane; Step C14: after a successful configuration information about prevention of errors described connections described service, generates a warning indication the wrong connection, switched from the original connection to the restored. Further, this policy is to prevent errors is the policy on protective switching, and specifically, step contains: Step 21: warning information about prevention of errors services, transport plane, control plane detects service, begetting warning indication the wrong connection, and sets the subject switching the target connection; Step C22: control plane gets prevention policy errors services that generate warning indication wrong connection; Step 23: control plane configures information on the prevention of errors services source connections on the target connection; Step C24: after a successful configuration information about prevention of errors described the target of the connection described the service generates a warning indication the wrong connection, switched from the original connection to the target. Another objective of the present invention is to provide a system to prevent incorrect connection services in the ASON network. To achieve the above objectives on technical feasibility of the invention is realized as follows. System to prevent incorrect connection services in optical networks automatically switched containing: module configuration information about prevention of errors, designed to configure information on the prevention of errors services in direction to the module incorrect connection and warnings, located on a transport plane; detection module wrong connection and warnings designed to detect incorrect connection services for information about prevention of errors services, which configures the described module configuration information about prevention of errors, and the incorrect connection to inform the module implementation of policies to prevent errors, located on the plane of control; module implementation of policies to prevent errors, designed to get the policy to prevent errors services that generate warning indication the wrong connection, and perform the appropriate operation to prevent errors once accepted, a warning message about incorrect connection, module incorrect connection and warnings. Further, the described module configuration information about prevention of errors, located on the plane of control and containing: module configuration information prevention of errors of the first node services, designed to configure information on the prevention of errors services in the transport plane on the first node services; module configuration information about prevention of errors target host services, designed to configure information on the prevention of errors services in the transport plane at a leaf node services; the described module configuration information about prevention of errors of the first host services, or the module configuration information about prevention of errors target host services, after start of operations configuration information about prevention of errors services must transmit the said information on the prevention of errors services site services, in turn, after receiving information about prevention of errors services nasty site services configures information on the prevention of errors services in the transport plane of the local host. Further, the information described on the prevention of errors services implies byte route tract, and when the configuration described byte route tract control plane must set the value of a parcel on the direction of transmission of the first and the end-nodes, services, and expected values for the direction of obtaining; The first or destination node services running operation configuration information about prevention of errors services, using a message Notify the RSVP Protocol or message OEM Protocol LMP to download the mentioned information on the prevention of errors services and passes last service site. Further, the described module implementation of policies to prevent errors contains: element definitions services with a defect, designed to determine the services with a defect on the warning message about the wrong connection, described module incorrect connection and warnings; the element receiving the policy, designed for producing a policy to prevent errors from service related messages in accordance with the service that defines the elements described definitions services with a defect; element of the policy, designed to perform relevant operations prevent errors in accordance with the obtained described element of receipt of the policy policy for the prevention of errors. This policy is to prevent errors is the policy of restoration or policies on protective switching. In the present invention using the control plane automatically configure the message on prevention of incorrect connection of the first and the target host, the present invention allows to overcome such deficiencies manual, which easily lead to errors; and exchange protocols quickly and easily interact information about prevention of errors of the first and the end-nodes. According to the present invention allows you to automatically perform configuration messages on the prevention of incorrect connection of the first and the end-nodes using the control plane, and when the alarm about the wrong connection can be automatically quote the information on the prevention of errors of the original connection to the new connection services with the use of the policy of different types to prevent errors. Thus, the present invention to a greater extent increases the applicability of the system and the sustainability of services. Brief description of drawings Figure 1 is a scheme of the situation the use of a way to prevent wrong connections during normal operation services in option I the implementation of the present invention; Figure 2 is a scheme of the creation of the restored connection when an improper connection services in option I the implementation of the present invention; Figure 3 is a chart of the process of the control plane configuration messages on the prevention of errors in normal operation services in option I the implementation of the present invention; Figure 4 is a chart of the process of preventing errors plane of control in case of wrong connection services in option I the implementation of the present invention; Figure 5 is a scheme of the situation of the use of a way to prevent wrong connections during normal operation services in variant II of the implementation of the present invention; Figure 6 is a scheme of the situation of the use of strategy on protective switching when an improper connection in variant II of the implementation of the present invention; Figure 9 is a scheme of the structure of the module implementation strategy for the prevention of errors among systems to prevent incorrect connection of the present invention. Realization of the invention With that control plane automatically configures messages on the prevention of incorrect connection of the first and the end-nodes, and if you encounter incorrect connection services the present invention can implement error prevention for services, can afford the service was quickly resume normal operation. Including, creation of services, recovery services, switching services and definition of the warning message about incorrect connection - all conducted the control plane ASON. And the detection of incorrect connections is a transport plane. Variant I implementation of the present invention Figure 1 is a scheme of the situation of the use of a way to prevent wrong connections during normal operation of the services in a preferred embodiment of the present invention, where the Mesh network consists of a network elements A, b, C, D, E, Z, subnet SNC-A and the channel by the aforementioned between the nodes, including the connections between the elements A and b, D, and Z, marked solid line represents the connection channel, and the connection between the elements b and D, and E, marked with a dashed line to represent a subnet of the connection (the legend in figure 1, 2, 5, 6 are the same, and won't repeat it below.) The control plane ASON already created a one-way connection services (or the original connection) via the A-V AC D-Z, including, first the connections node And end node - z In this version of the strategy for the prevention of errors services between A and Z adopts the strategy for reconstruction , i.e. connection services between A and Z is the level of recovery. When there is a failure in the connection through the creation of the restored connection service switches to the restored connection; the connection services between A and Z is recovery mode, and if a failure occurs in the source connection service switches to the restored connection through the creation of the restored connection. After that, if the failure of the initial compound is lost, then the service is switched to the original connection. The embodiment of the present invention detection technology transport plane incorrect connections applies way to prevent incorrect connection services on the basis of bytes Jx, thus, in this option, the message on the prevention of errors services implies bytes Jx. Of course, there are good and different way of discovery. In the present invention, creation of services, recovery services, switching services and definition of the warning message about incorrect connection - all conducted the control plane ASON. And the detection of incorrect connections is a transport plane. The present invention is characterized by the fact that the control plane automatically configure the message on prevention of errors of the first and the end-nodes services; node running the configuration messages on the prevention of errors services, may be the first or end node services; launching the configuration node must pass the message on prevention of errors services service site (nasty node represents another node in relation to the running configuration service site. If the first node services launches the configuration process, then the wretched is the destination node services); the first and destination nodes are sending configuration requests in its transport plane respectively and configure the messages on the prevention of errors services on the appropriate nodes. Message on the prevention of errors works only after successful configuration of the first and the end-nodes services. The process by which between the first node and end node services is synchronized configuration messages on the prevention of errors services and reported the result of the configuration contains the following steps: (1) after receipt of the communication on the prevention of errors services control plane first, or end-node sends a request to the configuration in its transport plane; (2) the first or destination node running the configuration messages on the prevention of errors services conveys a message about preventing errors services service site; Message on the prevention of errors services only applies to the interaction between the first and the end node. To ensure that the first and destination nodes automatically and fast configuration requires a certain Protocol to support, but not limited to any individual signal and the Protocol as a message to Notify the Protocol reserving network resources (Resource Reservation Protocol (RSVP), message OEM link control Protocol(Link Management Protocol (LMP), and other (3) after the receipt of the communication on the prevention of errors services nasty site services sends a request to the configuration of the transport plane of the local host; (4) after a successful configuration messages on the prevention of errors services, first and destination nodes services report an error known good configuration to its control plane respectively. Figure 3 is a scheme of the configuration process, the control plane messages on the prevention of errors during normal operation of the services. This process is a process in which, after receiving a request for a configuration message on the prevention of errors services, site services performs configuration messages on the prevention of errors on your side, specifically: Step 301: plane management receives a request for a configuration message on the prevention of errors services; Message on the prevention of errors services or specified the control plane, or automatically generated by the transport plane on a certain strategy; Step 302: control plane identifies the type of service, and receives a message about the service, and sets the installation point value of the parcel and the expected value; Step 303: Ask transport plane configuration messages on the prevention of errors services; The points of installation of the value of the parcel and the expected values established by the control plane, the transport plane configures the message on prevention of errors services on these points; For unidirectional services at the direction of transmission of the first node services is set to make and at the direction of a target host services set to the expected value, and these values are identical; For bidirectional services at the direction of transmission of the first and the end-nodes services is set to make and the direction of receiving the aforementioned nodes set to the expected value, and these values are identical. If you set the value of the parcel, not necessarily establish the expected value; and if set to the expected value, then be sure to set the corresponding value of the parcel. With reference to Figure 1, the steps are running configuration messages on the prevention of errors at the first node and destination node, contain: The first step in the direction of transmission node And set the value of a parcel byte route tract (bytes Jx) Work; The second step: the direction of receiving host Z is set to parcel byte route tract (bytes Jx) Work; Third step: once the node And receives a response to a successful configuration of the nodes A and Z, configuration messages on the prevention of errors services is successful; Interaction between nodes A and Z is carried out through the data transfer network DCN. Step 304: to define, that a successful configuration plane transmission of bytes Jx: if «Yes», then perform step 305, otherwise perform step 306; Step 305: control plane runs the function to prevent wrong connections; Step 306: report to the plane of management, and configuration failed. Figure 2 is a scheme of the creation of the restored connection when an improper connection services in the preferred variant of the present invention, where subnet SNC-A failure of a node or channel causes wrong connection services. On the host Z is generated by an alarm through the ducts of the parent compound and the node Z sends a warning message to node A. After receipt of the warning message from node Z node And performs the following basic steps, as shown in figure 4: Step 401: or message you received the wrong connection node And determines the service with a defect; Step 402: node receives a strategy to prevent errors services that generate warning indication wrong connection; Strategy for the prevention of errors services may be pre-configured plane management may also provide some strategy to prevent errors, which is dynamically chosen the control plane on the current state of the network. This version of the strategy for the prevention of errors adopts the strategy for reconstruction , and control plane starts a recovery; Step 403: control plane starts a recovery and creates the restored connection; As shown in figure 2, after the occurrence of improper connection in the connection (A-B VAC D-Z) plane of control creates the restored connection (A-C~E-Z) strategy to prevent errors. Step 404: management level configures the message on prevention of errors for the newly-restored connection; Before the service switches from the original connection on the restored, according to the prevention of errors of the original connection, control plane of the first and the end-nodes services performs configuration messages on the prevention of errors services for the newly-restored connection; Step 405: after a successful configuration messages on the prevention of mistakes service switches from the original connection to the restored connection; After successful configuration messages on the prevention of errors of the first and the end-nodes plane control switches the service with the initial connection (A-B VAC D-Z) the restored connection (A-C~E-Z). If incorrect connection in the initial compound has already been corrected node Z detects the loss of the emergency message about incorrect connection and sends a warning message to node A. After receipt of the warning message from node Z node And service switches with the restored connection to the original connection and destroys the restored connection, frees resources. Option II implementation of the present invention In this embodiment, as shown in figure 5, a Mesh network consists of a network elements A, b, C, D, E, F, G, Z, subnet SNC-A and channel between these nodes. The control plane ASON already successfully created: a working connection to 1: unidirectional service and connection A-V AC D-Z; a working connection to the 2: unidirectional service and connection A-C~E-Z; protective connection 1: unidirectional service and connection A-F~G-Z. These three compounds are protective group M:N (M=1, N=2), including working connections are working connections 1 and 2, and protective compound is protective connection 1. The first node to connect, and the destination node - z Steps at which control plane configures the message on prevention of errors services for desktop connection 1 is identical to the configuration steps in the embodiment I, as shown in figure 3. The configuration steps messages on the prevention of errors basis of services provided include: The first step in the direction of transmission node And set the value of a parcel byte route tract (Jx) as Work1; The second step: the direction of receiving node Z set to the expected value of the byte route tract (Jx) as Work1; Third step: once the node And receives a response to a successful configuration of the nodes A and Z, configuration messages on the prevention of errors services successful. Interaction between nodes A and Z is performed via the DCN network. Steps at which control plane configures the message on prevention of errors services for desktop connections 2, as outlined above, but the value of the parcel and the expected value of all take Work2. Steps at which control plane configures the message on prevention of errors services for protective connection 1, as outlined above, but the value of the parcel and the expected value of all take 1. In this option, failure of a node or the channel subnet SNC-A causes incorrect connection services. On the node Z in the connection 1 is generated by a warning about the wrong connection, as shown in Fig.6, and node Z sends a warning message to node A. when the node receives a warning message from node Z, run the following steps, as shown in Fig.7: Step 701: or received warning message on the prevention of wrong connections services node And determines the service with a defect; Step 702: node receives a strategy to prevent errors services; Step 703: determine adopted strategy on protective switching: if «Yes», then perform step 704, otherwise perform step 706; Step 704: control plane configures the message on prevention of errors (bytes Jx) services for the switched target compound; Control plane starts switching mode. Before switching a working connection 1 for protective connection 1 control plane configures the message on prevention of errors services for protective connection 1, including the message on prevention of errors services is a message on the prevention of errors services working connection 1; Step 705: after a successful configuration messages on the prevention of errors for protective connection 1 control plane starts switching mode and switch service with functional connection 1 on the target connection (i.e. protective connection 1); Step 706: if other strategies to prevent mistakes are, then perform operations other strategies to prevent errors. In this scenario, if the incorrect connection in the connection 1 has already been corrected node Z detects the loss of the warning message about incorrect connection and sends a warning message to node A. When the node receives a warning message node Z plane control switches the service on the protective connection 1 on a working connection 1 and recovers the original message on the prevention of errors services. Fig.8 is a scheme of the structure of the system to prevent incorrect connection of the present invention. System to prevent wrong connections in the present invention includes a module configuration messages on the prevention of errors detection module wrong connections and warnings and module implementation strategy for the prevention of errors, including the module configuration messages on the prevention of errors and runtime strategy to prevent errors are located on the plane of control, and detection module wrong connections and alerts located on a transport plane. Module configuration messages on the prevention of errors is designed for configuration messages on the prevention of errors services in direction to the module incorrect connection and warnings, located on a transport plane module; incorrect connection and a warning is designed to detect incorrect connection services described message on the prevention of errors services, which configures the described module configuration messages on the prevention of errors, incorrect connection inform module implementation strategy for the prevention of errors, located on the plane of control; a module of the implementation of the strategy for the prevention of errors is designed to get the strategy to prevent errors services that generate warning indication the wrong connection, and perform the appropriate operation to prevent errors once accepted, a warning message about incorrect connection, module incorrect connection and warnings. Then the module configuration messages on the prevention of errors contains the module configuration messages on the prevention of errors of the first node services designed for configuration messages on the prevention of errors services in the direction of the transport plane on the first node, services, and module configuration messages on the prevention of errors target host services designed for configuration messages on the prevention of errors services in the direction of the transport plane at a leaf node services. Module configuration messages on the prevention of errors of the first node services or module configuration messages on the prevention of errors target host services after starting the configuration messages on the prevention of errors services should transmit the message on prevention of errors services service site after receiving a message about preventing errors services nasty site services configures the message on prevention of errors services in the direction of the transport plane of the local host. Figure 9 is a scheme of the structure of the module implementation strategy for the prevention of errors among systems to prevent incorrect connection of the present invention. Module implementing the strategy for preventing errors contains a definition of services defective, the item receiving the strategy and the element of the strategy. Element definitions services with a defect is designed to determine the services with a defect on the warning message about the wrong connection, described module incorrect connection and warnings; the element receiving the strategy is designed to receipt of strategies to prevent errors from service related messages in accordance with the service that defines the elements described definitions services with a defect; element of the strategy is designed to perform the corresponding operations prevent errors in accordance with the obtained described element of receipt of the strategy the strategy for the prevention of errors. The proposal strategy for the prevention of errors, this may be a strategy for recovery or strategy on protective switching, or other strategies. The above descriptions are only preferred embodiments of the present invention and is not used to limit the present invention. Without deviating from the principle and essence of the invention is a specialist in this field can make a lot of modifications and changes to the present invention. The above modifications and changes are all included in the scope of the legal protection of the invention. 1. A way to prevent incorrect connection services in optical networks automatically switched, characterized in that it contains the following steps: A: the plane management configures the transport plane of information on the prevention of errors services; In: the mentioned information on the prevention of errors services, detecting incorrect connection, the transport plane reported to the control plane warning message about incorrect connection; after receiving described the warning message about the wrong connection, control plane gets a policy to prevent errors services that generate warning indication the wrong connection, and performs the appropriate operation error prevention; and described policy on prevention of errors is the policy of restoration or policies on protective switching, and information on the prevention of errors of the parent compound is quoted in the new connection services. 2. The method according to p. 1, wherein the step As described control plane configures the transport plane of information on the prevention of errors services, specifically: A1: after receiving information about prevention of errors services control plane first or the target host, the service sends a request to the configuration in its transport plane; A2: first or destination node services running operation configuration information about prevention of errors services, BelTA site services referred to information on the prevention of errors services; A3: after taking the mentioned information on the prevention of errors services described nasty site services sends a request to the configuration of the transport plane of the local host; A4: after successful configuration of the information mentioned on the prevention of errors services described first and destination nodes services report to the plane of the control message about a successful configuration. 3. The method according to p. 2, characterized in that the information on the prevention of errors services implies byte route path, when the configuration is described byte route tract control plane must set the value of the parcel and the expected value, the method of installation is as follows: for unidirectional services at the direction of transmission of the first node services is set to make and at the direction of a target host services set to the expected value, and these values are identical; for bidirectional services at the direction of transmission of the first and the end-nodes services is set to make and the direction of receiving the aforementioned nodes set to the expected value, and these values are identical. 4. The method according to p. 3, wherein the first or destination node that runs the operation configuration information about prevention of errors services, using a message Notify the RSVP Protocol or message OEM Protocol LMP for downloads described messages on the prevention of errors services and passes last service site. 5. The method according to p. 1, characterized in that case, when this policy is to prevent errors is the policy of restoration , step contains: C11: transport plane warning message about incorrect connection control plane detects service, begetting warning indication wrong connection; C12: control plane gets a policy to prevent errors services that generate warning indication the wrong connection, and creates the restored connection; S13: for information on preventing errors services of the parent compound in the restored connection control plane configures the said information on the prevention of errors services in the transport plane; C14: after a successful configuration information about prevention of errors described connections described the service generates a warning indication the wrong connection, switched from the original connection to the restored. 6. The method according to p. 1, characterized in that case, when this policy is to prevent errors is the policy on protective switching step contains: C21: warning information about prevention of errors, transport plane, control plane , begetting warning indication the wrong connection, and sets the subject switching target connection; S22: control plane gets a policy to prevent errors services that generate warning indication wrong connection; 23: control plane configures information on the prevention of errors services source connections on the target connection; S24: after a successful configuration information about prevention of errors described the target of the connection described the service generates a warning indication the wrong connection, switched from the original connection to the target. 8. System p. 7, characterized in that the described module configuration information about prevention of errors is located on the plane of control and contains: module configuration information about prevention of errors of the first node, designed for configuration information about prevention of errors for the transport plane on the first node services; module configuration information about prevention of errors target host services, designed to configure information on the prevention of errors services in the transport plane at a leaf node services; the described module configuration information about prevention of errors of the first node services or module configuration information about prevention of errors target host services, after starting the configuration information about prevention of errors services must transfer the said information on the prevention of errors services site services, in turn, after receiving information about prevention of errors services nasty site services configures information on the prevention of errors in the transport plane of the local host. 9. System p. 7, characterized in that the information on the prevention of errors services implies byte route tract and configuration described byte route tract control plane must set the value of a parcel on the direction of transmission of the first and the end-nodes and expected value at the direction of receipt; the first or destination node services running operation configuration information about prevention of errors services, using a message Notify the RSVP Protocol or message OEM Protocol LMP to download the mentioned information on the prevention of errors services and passes last service site. 10. System p. 7, wherein the described module implementation of policies to prevent errors contains: element definitions services with a defect, designed to determine the services with a defect on the warning message about the wrong connection, described module incorrect connection and warnings; the receipt of the policy,designed for producing a policy to prevent errors from service related messages in accordance with the service that defines the elements described definitions services with a defect; element of the policy, designed to perform the corresponding operations prevent errors in accordance with the obtained described element of receipt of the policy policy for the prevention of errors.
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