WO2008077299A1 - Redirecteur, relais et système de configuration d'informations de routage et procédé de mise à jour - Google Patents
Redirecteur, relais et système de configuration d'informations de routage et procédé de mise à jour Download PDFInfo
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- WO2008077299A1 WO2008077299A1 PCT/CN2007/002940 CN2007002940W WO2008077299A1 WO 2008077299 A1 WO2008077299 A1 WO 2008077299A1 CN 2007002940 W CN2007002940 W CN 2007002940W WO 2008077299 A1 WO2008077299 A1 WO 2008077299A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/42—Centralised routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/70—Routing based on monitoring results
Definitions
- the present invention relates to messaging techniques in the field of communications, and more particularly to redirectors, relays, routing information configuration systems, and updating methods. Background technique
- AAA refers to Authentication, Authorization, and Accounting. Since the birth of the network, the Authentication, Authorization, and Accounting System (AAA) has become the foundation of its operations.
- the Remote Access Dialup User Service (RADIUS) protocol is one of the most commonly used authentication and accounting protocols. It is simple, secure, easy to manage, and has good scalability, so it is widely used. However, due to the defects of the protocol itself, such as UDP (user datagram protocol) transmission, simple packet loss mechanism, no retransmission regulations and centralized charging services, it is not suitable for the current network. The development needs further improvement.
- UDP user datagram protocol
- Diameter protocol is an upgraded version of RADIUS protocol
- basic protocol network access service (NAS) protocol, Extensible Authentication Protocol (EAP) protocol, Mobile Internet Protocol (MIP) protocol , password message syntax (CMS) protocol, etc.
- EAP Extensible Authentication Protocol
- MIP Mobile Internet Protocol
- CMS password message syntax
- the Diameter protocol supports the authentication, authorization, and accounting of mobile IP, NAS requests, and mobile agents.
- the implementation of the Diameter protocol is similar to that of RADIUS. It also uses Attribute-Value-Pair (AVP), which is Attribute-Length-Value.
- AVP Attribute-Value-Pair
- TCP/SCTP Transmission Control Protocol/Stream Control Transmission Protocol
- Diameter protocol multiple types of Diameter nodes are included.
- Diameter relay can extract information from the Diameter request message, and then determines the next hop Diameter node sent by the message according to the content of the Diameter domain-based routing table.
- the Diameter relay only modifies the routing information for past messages without changing other content in the message.
- the Diameter agent determines the next hop Diameter node sent by the message according to the content of the Diameter routing table.
- the Diameter agent can modify the corresponding content in the message.
- the Diameter redirector does not process the message at the application layer. It uniformly processes the routing configuration of the Diameter message.
- Diameter protocol converter is mainly used to implement protocol conversion between RADIUS and Diameter, or a protocol of the Terminal Access Controller Access Control System (TACACS+) and Diameter.
- TACACS+ Terminal Access Controller Access Control System
- Diameter protocol provides mechanisms for dynamic discovery of nodes, capability negotiation, etc., which enhances the flexibility of the protocol and facilitates configuration and management.
- Diameter redirection is an efficient way to simplify routing and provide centralized configuration, which is useful when routing needs to be centrally configured.
- the redirector serves all members of a group and does not need to be responsible for inter-domain message relaying. The advantage of this approach is that when a member's structure changes, the group does not need to provide routing updates to its members.
- FIG. 1 is a schematic diagram of a system structure of a prior art Diameter redirect message.
- a Diameter client (such as a network access server) generates a service request message for the user bob@example.com, and sends the service request message to its Diameter. Trunk, assuming that the Diameter relay belongs to the example.net domain, there is no route entry for example.com in the Diameter routing table of the relay, and the default route is configured as the Diameter redirector. At this time, the Diameter relays to the Diameter.
- the redirector initiates a redirect request message, and the Diameter redirector queries the stored route configuration information.
- the contact information of the Diameter server that can process the service request message sent by the Diameter client is received, and the contact information of the Diameter server is returned to the Diameter relay through the redirect response, and the Diameter relay is based on the contact information and the Diameter server.
- the next hop node of the Diameter relay in Figure 1 is the Diameter server. If the next hop node of the Diameter relay is another Diameter relay, correspondingly, the contact of the other Diameter relay is obtained through the redirect request message. Way information.
- the Diameter redirector after receiving the redirect request message sent by the Diameter relay, the Diameter redirector queries the route configuration information stored therein, generates a redirect response according to this, and returns a response to the Diameter relay, where the redirect response includes the routing information.
- the routing information is expressed as a Redirect-Host-Usage AVP and a Redirect-Max-Cache-Time AVP (Redirect-Max-Cache-Time AVP), where Redirect-Host- The Usage AVP is an enumeration type, which is used to indicate the usage of the Diameter relay to respond to the redirected content.
- the Redirect-Max-Cache-Time AVP is used to indicate that the Diameter relay creates the peer table and the domain based on the redirected host. The validity period of the routing table. These two AVPs provide guidance on how Diameter relays handle redirected routing information. Please refer to Table 1 for how to use two AVPs.
- the receiver of the redirect response does not cache the routing information generated by the redirect response, implying all subsequent and corresponding The redirect message requests the same message to the redirector to get the redirect information.
- Other values of the Redirect-Host-Usage AVP indicate that the Diameter receives the redirect response.
- the received redirect message can be cached, it can be based on a domain, an application, some sessions, some users, and directly according to the value of the Redirect-Max-Cache-Time AVP.
- the routing information specified by the redirect message is forwarded without re-requesting the redirector.
- the Redirect-Max-Cache-Time expires, the redirected routing information in the cache is deleted and sent to the redirector again. Redirect request message.
- the peer in the redirect response returned by the redirector, when the value of the Redirect-Host-Usage AVP is not DONT-CACHE ( 0 ), that is, the peer can be cached based on a certain domain or The routing information of the application, in the subsequent period, all the service messages with the corresponding routes can be directly sent to the next hop node Redirect-Host specified by the cached routing information, without redirecting to the redirector. request.
- the routing configuration information in the redirector changes, the node that sent the redirect request message cannot be notified. Only when the redirected routing information expires or the next hop Diameter node Redirect-Host fails.
- the node that previously sent the redirect request message will re-initiate the redirect request message to the redirector to obtain new routing information.
- the message interaction is real-time and the quality of service is high.
- the embodiment of the present invention provides a redirector, a relay, a routing information configuration system, and an update method.
- the routing configuration information in the redirector changes, the node that has previously sent the redirect request message cannot be notified. , can only wait for the redirect routing information to expire automatically and automatically expire, which will lead to the interruption of the application, causing the degradation of service quality.
- a redirector includes a route storage module for storing route configuration information to each target node, and a route indication module connected to the route storage module, where the route indication module is configured to query a route configuration.
- the information, and the routing instruction information that carries the routing information is generated according to the routing configuration information, and includes: a monitoring module, configured to be connected to the routing storage module, configured to monitor the change of the routing configuration information; and the notification module, connected to the monitoring module, configured to send the changed routing configuration information to the intermediate node managed by the redirector The notification of the corresponding routing information is invalid.
- a relay provided by the embodiment of the present invention includes a forwarding module for forwarding a service request message according to routing information, and a cache module connected to the forwarding module for buffering the routing information, and the cache
- a query module configured to connect to the discarding module, the cache module, and the deleting module, respectively, to query whether the expired routing information is subscribed, and if yes, notify the deleting module to delete the invalid routing information; if not, Sending a notification that the routing information is invalid to the discarding module.
- Another relay provided by the embodiment of the present invention includes a forwarding module for forwarding a service request message according to routing information, and a cache module connected to the forwarding module for buffering the routing information, and the foregoing
- the deleting module which is used by the cache module to delete the invalid routing information, further includes: an updating module, connected to the cache module, for updating corresponding invalid routing information stored in the cache module with new routing information .
- a routing information configuration system includes a redirector and a relay, where the redirector includes a routing storage module for storing routing configuration information to each target node, and is connected to the routing storage module. a route indication module for querying route configuration information and generating route indication information carrying routing information according to the route configuration information; the relay includes a message that is connected to the route indication module and used to forward a service request message according to the route information. a forwarding module, and a cache module connected to the forwarding module for buffering the routing information, and a deleting module connected to the cache module for deleting invalid routing information, the redirector further Includes:
- a monitoring module configured to be connected to the routing storage module, configured to monitor a change of the routing configuration information
- a notification module configured to be connected to the monitoring module, configured to send the changed routing configuration information to the intermediate node managed by the redirector The notification that the corresponding routing information is invalid
- the relay further includes: A discarding module, configured to discard notification that the routing information is invalid;
- the query module is connected to the discarding module, the cache module, and the deleting module, and is in communication with the notification module, and is configured to query whether the expired routing information is subscribed, and if yes, notify the deleting module to delete the invalidating Routing information; if not, sending a notification that the routing information is invalid to the discarding module.
- Another routing information configuration system includes a redirector and a relay
- the redirector includes a route storage module for storing route configuration information to each target node, and the route storage module And a route indication module, configured to query routing configuration information and generate route indication information that carries routing information according to the route configuration information;
- the relay includes a connection with the route indication module, and is used to forward the service according to the routing information.
- a forwarding module of the request message a cache module connected to the forwarding module for buffering the routing information, and a deleting module connected to the cache module for deleting invalid routing information
- the redirecting also includes:
- a monitoring module configured to be connected to the routing storage module, configured to monitor a change of the routing configuration information
- a notification module connected to the monitoring module, and configured to communicate with the deleting module, configured to send to an intermediate node requesting routing information a notification that the routing information corresponding to the changed routing configuration information is invalid
- the routing request storage module is respectively connected to the routing indication module and the notification module, and is used for storing address information of the intermediate node requesting routing information and routing with the request The routing configuration information corresponding to the information.
- the notification that the routing information corresponding to the routing configuration information is invalid is sent;
- the redirector can notify all nodes managed by the redirector in time, or the node that subscribes to the routing configuration information, the previously subscribed routing indication information is invalid, or further sent new Route indication information, such that routing information stored in the relay Automatic, fast, and timely updates can be obtained, which avoids the consequences of forwarding the service request message according to the invalid route due to the failure to notify the routing information change in time, and the application of the message real-time and service quality requirements is high.
- the utility model overcomes the interruption of the application caused by the faulty service request, and ensures the correct forwarding of the service request message and improves the service quality compared with the prior art.
- FIG. 1 is a schematic structural diagram of a system of a Diameter redirect message in the prior art.
- FIG. 2 is a schematic structural diagram of Embodiment 1 of a redirector according to an embodiment of the present disclosure.
- FIG. 3 is a schematic structural diagram of Embodiment 2 of a redirector according to an embodiment of the present disclosure.
- FIG. 4 is a schematic structural diagram of Embodiment 1 of a relay according to an embodiment of the present disclosure.
- FIG. 5 is a schematic structural diagram of Embodiment 2 of a relay according to an embodiment of the present disclosure.
- FIG. 6 is a schematic structural diagram of Embodiment 3 of a relay according to an embodiment of the present invention.
- FIG. 7 is a schematic structural diagram of Embodiment 1 of a routing information configuration system according to an embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of Embodiment 2 of a routing information configuration system according to an embodiment of the present invention.
- FIG. 9 is a schematic structural diagram of Embodiment 3 of a routing information configuration system according to an embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of Embodiment 4 of a routing information configuration system according to an embodiment of the present invention.
- FIG. 11 is a basic flowchart of a method for updating routing information according to an embodiment of the present invention.
- FIG. 12 is a flowchart of Embodiment 1 of a method for updating routing information according to an embodiment of the present invention.
- FIG. 13 is a flowchart of Embodiment 2 of a method for updating routing information according to an embodiment of the present invention.
- FIG. 14 is a flowchart of Embodiment 3 of a method for updating routing information according to an embodiment of the present invention. detailed description
- a monitoring module is set in the redirector to monitor the change of the routing configuration information
- the routing request storage module may be further configured to store the address information of the intermediate node that subscribes to the routing information; when the routing configuration information changes, Proactively and timely notifying the intermediate node managed by the redirector or the intermediate node in which the routing information corresponding to the changed routing configuration information is requested, in time Delete the invalid routing information, or further update the invalid routing information, so as to timely disable the invalid routing information and update the routing information.
- Embodiments of the present invention are applicable to the AAA protocol, and are particularly applicable to the Diameter protocol.
- FIG. 2 is a schematic structural diagram of Embodiment 1 of a redirector according to an embodiment of the present invention.
- the redirector includes a route indication module 12, a route storage module 11, a monitoring module 13, and a notification module 14 that are sequentially connected.
- the routing storage module 11 is configured to store routing configuration information to each target node, and the routing configuration information may include routing information of each intermediate node to each target node.
- the routing indication module 12 is configured to receive a redirect request sent by each intermediate node. The message, according to the redirect request message, finds the corresponding route configuration information from the route storage module 11, and generates route indication information carrying the route information, so as to indicate how the intermediate node that sends the redirect request message routes the service request message.
- the monitoring module 13 is configured to monitor the change of the routing configuration information in the routing storage module 11, and obtain the new routing information corresponding to the changed new routing configuration information from the routing storage module 11; the notification module 14 is configured to The intermediate node managed by the redirector sends a notification that the routing information corresponding to the changed routing configuration information is invalid.
- new routing information in lieu of invalid routing information may also be sent to the intermediate node managed by the redirector.
- the monitoring module can monitor the change of the routing configuration information.
- the set notification module can notify the intermediate node managed by the redirector in time (ie: relay), avoiding the failure to notify the routing in time.
- the information changes and the service request message is forwarded according to the invalid route the result of the error message is caused.
- the application interruption caused by the wrong service request is overcome.
- FIG. 3 is a schematic structural diagram of a second embodiment of a redirector according to an embodiment of the present invention.
- the redirector further includes a route request storage module 15 connected to the route indication module 12 and the notification module 14, respectively.
- the address information of the intermediate node for storing the request routing information (ie, the redirect request message) and the routing configuration information corresponding to the routing information of the request; correspondingly, the notification module 14 is specifically configured to store in the storage module 15 according to the routing request.
- the redirector may further include a node aging detection module 16, which is respectively connected to the route request storage module 15 and the route indication module 12, and is configured to detect an active state of the intermediate node requesting routing information, that is, according to the intermediate node and the route indication module.
- the information exchange status of 12 the address information of the intermediate node stored in the route request storage module 15 that is not active for a predetermined period of time (ie, does not interact with the route indication module 12) and the routing information corresponding to the request Routing configuration information to avoid sending invalid information to aging (including both non-existent or long-term inactivity) intermediate nodes. In this way, unnecessary information transmission is avoided, the amount of information transmission is reduced, the workload of the redirector is reduced, the working efficiency is improved, and network traffic is also reduced.
- new routing information in lieu of invalid routing information may also be sent to the intermediate node managed by the redirector. After the new routing information is sent, the intermediate node can update the invalid routing information with the new routing information, thus ensuring the correct forwarding of the service request message and improving the quality of service.
- the route request storage module 15 can be integrally configured with the route storage module 11.
- FIG. 4 is a schematic structural diagram of a first embodiment of a relay according to an embodiment of the present invention.
- the relay is an intermediate node that forwards a service request message, and includes a forwarding module 21, a cache module 22, and a deletion module 24 that are sequentially connected.
- the query module 25 and the discarding module 26 are also connected to the query module 25.
- a timing module 23 connected to the cache module 22 and the deletion module 24 may be further included.
- the forwarding module 21 is configured to forward the service request message according to the routing information (the routing information carried in the routing indication information returned by the redirector or the routing information cached by the cache module 22); the cache module 22 is configured to cache the redirector.
- the routing information that is sent within the validity period; the routing information that can be cached by the redirector to the relay has a specified validity period. Therefore, the timing module 23 times the validity period of the routing information buffered by the cache module 22, when the validity period expires.
- the deletion module 24 is configured to delete the routing information that exceeds the validity period and the invalidation.
- the query module 25 is configured to query whether to subscribe to the invalid routing information after receiving the notification that the routing information sent by the redirector is invalid. if, The notification deleting module 24 deletes the invalid routing information cached by the cache module 22; if not, the notification of invalidation of the routing information is sent to the discarding module 26; the discarding module 26 is configured to discard the message unrelated to the routing information buffered by the cache module 22. , here, includes notification that the routing information is invalid.
- the query module can query whether to cache the invalid routing information, so as to ensure that the invalid routing information is correctly deleted.
- the discarding module 26 acts as an additional function when discarding the notification of the invalidation of the routing information according to the indication of the querying module 25.
- the new routing information that replaces the invalid routing information may be discarded at the same time, that is, the message discarded by the discarding module 26 and not related to the routing information buffered by the cache module 22, including the notification of the invalidation of the routing information and the replacement of the invalid routing information.
- New routing information may be discarded at the same time, that is, the message discarded by the discarding module 26 and not related to the routing information buffered by the cache module 22, including the notification of the invalidation of the routing information and the replacement of the invalid routing information.
- FIG. 5 is a schematic structural diagram of a relay embodiment 2 according to an embodiment of the present invention.
- the relay further includes an update module 27, which is respectively connected to the query module 25 and the cache module 22, and cached in the cache module 22.
- the corresponding routing information buffered by the cache module 22 is updated with the new routing information sent by the redirector.
- the update module can update the invalid routing information to the new routing information, thereby ensuring that the relay forwards the service request message correctly, quickly, and timely, and improves the quality of service.
- FIG. 6 is a schematic structural diagram of a third embodiment of a relay according to an embodiment of the present invention.
- the method includes a forwarding module 21, a cache module 22, a deletion module 24, and an update module 27 connected to the cache module 22.
- the functions of the respective modules are the same as those of the respective modules in the above embodiment. The difference is that, when the routing information cached by the cache module 22 sent by the redirector fails, the update module 27 directly updates the corresponding invalid routing information cached by the cache module 22 by using the new routing information sent by the redirector.
- the query routing module 22 does not need to query whether the corresponding routing information is stored, which reduces the time for querying the routing information and improves the message forwarding efficiency.
- FIG. 7 is a schematic structural diagram of Embodiment 1 of a routing information configuration system according to an embodiment of the present invention, where
- the routing information configuration system includes a redirector and a relay for the communication connection.
- the redirector uses the redirector shown in FIG. 2, and the relay uses the relay shown in FIG. 4, and the forwarding module 21 in the relay communicates with the routing indication module 12 in the redirector to indicate the routing direction.
- the module 12 requests the routing information, and receives the routing indication information returned by the routing indication module 12;
- the querying module 25 in the relay communicates with the notification module 14 in the redirector, and receives the notification that the routing information sent by the notification module 14 is invalid. , to query whether the expired routing information is subscribed.
- the relay in this embodiment may also not include the timing module 23.
- FIG. 8 is a schematic structural diagram of Embodiment 2 of a routing information configuration system according to an embodiment of the present invention.
- the notification module 14 further has a function of sending new routing information instead of invalid routing information; correspondingly, Following the relay shown in Figure 5.
- FIG. 9 is a schematic structural diagram of Embodiment 3 of a routing information configuration system according to an embodiment of the present invention.
- the redirector uses the redirector shown in FIG. 3, and the relay adopts the prior art. That is, it is composed of a forwarding module 21, a cache module 22, a deletion module 24, and a timing module 23, which are sequentially connected.
- the forwarding module 21 is in communication with the routing indication module 12 to request routing information from the routing indication module 12 and receive routing.
- the routing indication information returned by the module 12 is indicated; the notification module 14 is connected to the deletion module 24.
- the notification module 14 sends a notification to the deletion module 24 that the routing information of the relay cache is invalid, and the deletion module 24 deletes the cached and invalid routing information in the cache module 22 according to the notification of the failure of the routing information sent by the notification module 14.
- the relay in this embodiment may also not include the timing module 23.
- FIG. 10 is a schematic structural diagram of Embodiment 4 of a routing information configuration system according to an embodiment of the present invention, where the notification module 14 has a notification for invalidating routing information to a relay requesting invalid routing information and replacing the invalid routing information.
- the function of the new routing information correspondingly, the relay adopts the relay shown in FIG. 6, and the update module 27 communicates with the notification module 14 to notify the new routing information sent by the module 14 to update the cache module 22, Corresponding routing information for invalidation.
- the redirector may also adopt an embodiment that does not include the node aging detecting module 16; the routing request storage module 15 and the routing storage module 11 may be integrally configured. It is assumed that the relay of the present invention receives a service request message sent by a client. Since the routing information is not found in the cache module 22, it is not known how to forward the service request message to the target node, and the default route configuration of the relay is configured as a redirect. The device sends a redirect request to the redirector. After receiving the redirect request, the redirector queries the stored route configuration information, obtains the routing information of the target node, and generates routing instruction information carrying the routing information.
- the routing indication information also specifies the validity period of the routing information, that is, the routing information can be cached within the validity period; after the relay caches the routing information, when the relay receives the same service request message sent by the client during the validity period, The service request message can be directly forwarded according to the previously cached routing information, and the redirection request does not need to be resent to obtain the routing information. Only when the validity of the routing information expires or the routing node fails, the relay deletes the invalid routing information and initiates a redirect request to the redirector. During the validity of the routing information, if the routing configuration information that is centrally configured in the redirector changes, the foregoing system provided by the present invention can notify the relay in time to update the routing information.
- FIG. 11 is a flowchart of a method for updating routing information according to an embodiment of the present invention.
- the method includes the following steps: Step 101: When monitoring the change of routing configuration information, sending a notification that the routing information corresponding to the routing configuration information is invalid;
- Step 102 Delete the cached invalid routing information according to the notification that the routing information is invalid.
- the corresponding routing information failure notification is sent, and the invalid routing information is deleted in time, thereby avoiding the failure to notify the routing information change in time and forwarding the service request message according to the invalid routing message.
- the consequence of the message overcomes the interruption of the application caused by the wrong service request in the application where the real-time interaction of the message and the quality of service are high.
- FIG. 12 is a flowchart of Embodiment 1 of a method for updating routing information according to an embodiment of the present invention.
- the embodiment may be implemented based on the routing information configuration system shown in FIG. 7, which specifically includes the following steps:
- step 201 when the monitoring module 13 detects the change of the routing configuration information stored in the routing storage module 11, the notification module 14 sends a notification to the querying module 25 that the routing information corresponding to the routing configuration information is invalid, and the notification may be only a route.
- the domain or application involved in the information has changed;
- Step 202 The query module 25 queries whether the invalid routing information is cached in the cache module 22. If yes, the notification deleting module 24 deletes the invalid routing information in the cache module 22, and then performs step 203; otherwise, the notification that the routing information is invalidated is forwarded to the discarding module 26, and then step 204 is performed; Step 203, the deleting module 24 deletes the cache. The expired routing information cached in module 22, and then step 205 is performed;
- Step 204 The discarding module 26 discards the notification that the routing information is invalid.
- Step 205 the end.
- step 201 when the notification of the invalidation of the routing information is sent, the new routing information that replaces the invalid routing information may be simultaneously sent; correspondingly, in step 202, for example, the cache module 22 If the cached routing information is cached, the query module 25 sends the notification of the invalidation of the routing information and the new routing information to the update module 27; Step 203 corresponds to: the update module 27 replaces the cached cache in the cache module 22 with the new routing information. The invalid routing information is used to update the routing information.
- FIG. 13 is a flowchart of Embodiment 2 of a method for updating routing information according to an embodiment of the present invention.
- the implementation may be implemented based on the routing information configuration system shown in FIG. 9, which specifically includes the following steps:
- Step 301 When the monitoring module 13 detects the change of the routing configuration information stored in the routing storage module 11, the notification module 14 queries the routing request storage module 15 for the intermediate node requesting the routing information corresponding to the changed routing configuration information. Address information, and sending, according to the address information, a notification that the routing information corresponding to the routing configuration information is invalid to the deleting module 24 in the intermediate node;
- Step 302 The deleting module 24 deletes the invalid routing information cached in the cache module 22.
- FIG. 14 is a flowchart of Embodiment 3 of a method for updating routing information according to an embodiment of the present invention.
- the implementation may be implemented based on the routing information configuration system shown in FIG. 10, which specifically includes the following steps:
- Step 401 When the monitoring module 13 detects the change of the routing configuration information stored in the routing storage module 11, the notification module 14 receives the new routing information corresponding to the new routing configuration information sent by the monitoring module 13, and stores the routing request from the routing request.
- the module 15 queries the address information of the intermediate node that requests the routing information corresponding to the changed routing configuration information, and sends a notification of the invalidation of the routing information corresponding to the routing configuration information to the update module 27 in the intermediate node according to the address information, and New routing information;
- the update module 27 updates the corresponding, expired routing information cached in the cache module 22 with the new routing information.
- the node aging detecting module 16 can also detect the active state of the intermediate node of the request routing information stored in the routing request storage module 15 in real time, and it does not have a route for more than a predetermined period of time.
- the instruction module 12 exchanges information, the address information of the intermediate node stored in the route request storage module 15 and the routing configuration information corresponding to the route information requested by the routing module are deleted, so as to avoid sending invalid information to the aging intermediate node, thereby reducing the network load.
- the invalid routing information can be deleted in time, which avoids the consequences of forwarding the service request message according to the invalid route due to the failure to notify the routing information change in time, and the real-time and service shield of the message interaction.
- the application interruption caused by the faulty service request is overcome; the cached routing information can be updated automatically, quickly and in time, the correct forwarding of the service request message is ensured, and the service quality is improved.
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Description
重定向器、 中继、 路由信息配置系统及更新方法 技术领域
本发明涉及通信领域中的消息发送技术, 尤其是重定向器、 中继、 路由信 息配置系统及更新方法。 背景技术
AAA指的是 Authentication (认证 )、 Authorization (授权)与 Accounting (计费)。 自网络诞生以来, 认证、 授权以及计费体制 (AAA )就成为其运营的 基础。 远程访问拨号用户服务( Remote Access Dial up User Service, RADIUS ) 协议是目前最常用的认证计费协议之一, 它简单安全, 易于管理, 扩展性好, 所以得到广泛应用。 但是由于协议本身的缺陷, 比如基于 UDP ( user datagram protocol, 用户数据报协议) 的传输、 简单的丢包机制、 没有关于重传的规定和 集中式计费服务, 都使得它不太适应当前网络的发展, 需要进一步改进。 直径 ( Diameter )协议(Diameter协议是 RADIUS协议的升级版本) 包括基本协议, 网络接入服务(NAS )协议, 可扩展鉴别 (Extensible Authentication Protocol, EAP )协议,移动 IP ( Mobile Internet Protocol, MIP )协议,密码消息语法( CMS ) 协议等。 Diameter协议支持移动 IP、 NAS请求和移动代理的认证、 授权和计费 工作, Diameter 协议的实现与 RADIUS 类似, 也是采用属性值对 ( Attribute-Value-Pair, AVP ), 即 Attribute-Length-Value三元组形式来实现, 但 是其中详细规定了错误处理, 失败恢复机制, 采用 TCP/SCTP ( Transmission Control Protocol/Stream Control Transmission Protocol,传输控制协议 /流量控制传 输协议)协议, 支持分布式计费, 克服了 RADIUS的许多缺点, 是最适合未来 通信系统的 AAA协议,已被 IETF的 AAA工作组作为下一代的 AAA协议标准。
在 Diameter协议中, 包括多种类型的 Diameter节点。 除了 Diameter客户端 和 Diameter服务器夕卜 , 还有 Diameter中继、 Diameter代理、 Diameter重定向器
和 Diameter协议转换器。 Diameter中继,能够从 Diameter请求消息中提取信息, 再根据 Diameter基于域的路由表的内容决定消息发送的下一跳 Diameter节点。 Diameter中继只对过往消息进行路由信息的修改, 而不改动消息中的其他内容。 Diameter代理, 根据 Diameter路由表的内容决定消息发送的下一跳 Diameter节 点。 此外, Diameter代理能够修改消息中的相应内容。 Diameter重定向器, 不 对消息进行应用层的处理, 它统一处理 Diameter 消息的路由配置。 当一个 Diameter节点按照配置将一个不知道如何路由的请求消息发给 Diameter重定向 器时, 重定向器将根据其详尽的路由配置信息, 把路由指示信息加入到请求消 息的响应里,从而明确地通知该 Diameter节点的下一跳 Diameter节点。 Diameter 协议转换器,主要用于实现 RADIUS与 Diameter,或者安全控管的协定( Terminal Access Controller Access Control System, TACACS+ )与 Diameter之间的协议转 换。 上述各种 Diameter节点, 通过配置、 或自动发现、 能力协商建立网络连接, 组成一个 Diameter网络。
在大规模的 AAA应用中, 随着 Diameter节点的增加, 配置管理任务会相 当繁瑣。 为此, Diameter协议提供了动态发现节点、 能力协商等机制, 增强了 协议的灵活性, 方便了配置和管理。 Diameter重定向是一种简化路由、 提供集 中式配置的有效方法, 其在路由需要集中配置的情况下非常有用。 重定向器为 一个集团的所有成员提供服务, 且不需要负责域间消息中继的任务。 这种方案 的优势在于, 当某个成员的结构发生变化时, 无需集团向它的成员提供路由更 新。
图 1所示为现有技术 Diameter重定向消息的系统结构示意图, Diameter客 户端(如网络接入服务器)为用户 bob@example.com产生一个业务请求消息, 并将该业务请求消息发送给其 Diameter 中继, 假设该 Diameter 中继属于 example.net域, 该中继的 Diameter路由表中没有 example.com的路由入口, 并 且其缺省路由配置为 Diameter重定向器, 此时, Diameter中继向 Diameter重定 向器发起重定向请求消息, Diameter重定向器查询其存储的路由配置信息, 获
取可处理 Diameter客户端发送的业务请求消息的 Diameter服务器的联系方式信 息, 并通过重定向响应将该 Diameter服务器的联系方式信息返回给 Diameter中 继, Diameter中继便根据联系方式信息, 与 Diameter服务器建立传输连接, 将 业务请求消息发送给 Diameter服务器。 图 1 中 Diameter中继的下一跳节点为 Diameter服务器, 若该 Diameter中继的下一跳节点为另一 Diameter中继, 则相 应的, 通过重定向请求消息获取该另一 Diameter中继的联系方式信息。
按照 RFC3588基本协议, Diameter重定向器接收到 Diameter中继发送的重定 向请求消息后, 查询其中存储的路由配置信息, 据此生成重定向响应并返回给 Diameter中继, 该重定向响应包含路由信息, 该路由信息表示为, 重定向主机使 用属性值对 ( Redirect-Host-Usage AVP ) 和重定向最大緩存时间属性值对 ( Redirect-Max-Cache-Time AVP ) 的形式, 其中, Redirect-Host-Usage AVP为 枚举型, 用以指示 Diameter中继对本条重定向响应内容的使用方法; Redirect-Max-Cache-Time AVP用以指示 Diameter中继为重定向主机创建的对等 端表和基于域的路由表的有效期。这两个 AVP为 Diameter中继如何处理重定向路 由信息提供指导。 两个 AVP的使用方法请参考表 1。
表 1中, Redirect-Host-Usage AVP的取值为缺省模式 DONT— CACHE(O)时, 表示重定向响应的接收者不要对此重定向响应生成的路由信息进行緩存, 暗示 后续所有与相应重定向请求相同的消息都要向重定向器进行请求, 以获取重定 向信息。 Redirect-Host-Usage AVP的其它值表示接收该重定向响应的 Diameter中
继可以緩存收到的重定向消息, 可以基于某个域、 某个应用、 某些会话、 某些 用户, 在一段时间内 (由 Redirect-Max-Cache-Time AVP的值指定) , 直接按照 该重定向消息指定的路由信息进行转发, 不需要重新向重定向器请求; 而在 Redirect-Max-Cache- Time期满后,才会删除緩存中的重定向路由信息,并重新向 重定向器发送重定向请求消息。
按照上述方法, 在重定向器返回的重定向响应中, 当 Redirect-Host-Usage AVP的取值不是 DONT—CACHE ( 0 ) 时, 即: 在某段时间内可以缓存对端基于 某个域或应用的路由信息, 在后续的该时间段内, 所有具有相应路由的业务消 息 , 都可以直接发送到緩存的路由信息指定的下一跳节点 Redirect-Host, 而不重 新向重定向器进行重定向请求。 这种情况下, 当重定向器中的路由配置信息发 生变化时, 无法通知之前发送过重定向请求消息的节点, 只有在重定向路由信 息期满或下一跳 Diameter节点 Redirect-Host出现故障导致无法处理业务消息时, 先前发送重定向请求消息的节点才会重新向重定向器发起重定向请求消息, 来 获取新的路由信息, 在对消息交互实时性及服务质量要求较高的应用场合下, 现有技术等待重定向路由信息有效期满而自动失效的方法无法被接受, 会导致 应用的中断, 从而引起服务质量的下降。 发明内容
本发明实施例提供重定向器、 中继、 路由信息配置系统及更新方法, 用以 现有技术中当重定向器中的路由配置信息发生变化时, 无法通知之前发送过重 定向请求消息的节点, 只能等待重定向路由信息有效期满而自动失效, 从而会 导致应用的中断, 引起服务质量的下降的问题。
本发明实施例提供的一种重定向器, 包括用于存储到各目标节点的路由配 置信息的路由存储模块, 和与该路由存储模块连接的路由指示模块, 该路由指 示模块用于查询路由配置信息, 并根据该路由配置信息生成携带路由信息的路 由指示信息, 还包括:
监测模块, 与所迷路由存储模块连接, 用于监测所述路由配置信息的变化; 通知模块, 与所述监测模块连接, 用于向所述重定向器管理的中间节点发 送变化的路由配置信息对应的路由信息失效的通知。
本发明实施例提供的一种中继, 包括用于根据路由信息转发业务请求消息 的转发模块, 和与所迷转发模块连接的、 用于緩存所述路由信息的緩存模块, 和与所述緩存模块连接的、 用于删除失效的路由信息的删除模块, 还包括: 丢弃模块, 用于丢弃路由信息失效的通知;
查询模块, 分别与所述丟弃模块、 所述緩存模块及所述删除模块连接, 用 于查询是否订阅了失效的路由信息, 若是, 则通知删除模块删除该失效的路由 信息; 若否, 则将所述路由信息失效的通知发送给所述丟弃模块。
本发明实施例提供的另一种中继, 包括用于根据路由信息转发业务请求消 息的转发模块, 和与所述转发模块连接的、 用于緩存所述路由信息的緩存模块, 和与所述緩存模块连接的、 用于删除失效的路由信息的删除模块, 还包括: 更新模块, 与所述緩存模块连接, 用于以新的路由信息更新所述緩存模块 中存储的相应的失效的路由信息。
本发明实施例提供的一种路由信息配置系统, 包括重定向器与中继, 所述 重定向器包括用于存储到各目标节点的路由配置信息的路由存储模块, 和与该 路由存储模块连接的、 用于查询路由配置信息并根据该路由配置信息生成携带 路由信息的路由指示信息的路由指示模块; 所述中继包括与所述路由指示模块 连接的、 用于根据路由信息转发业务请求消息的转发模块, 和与所述转发模块 连接的、 用于緩存所述路由信息的緩存模块, 和与所述緩存模块连接的、 用于 删除失效的路由信息的删除模块, 所述重定向器还包括:
监测模块, 与所述路由存储模块连接, 用于监测所述路由配置信息的变化; 通知模块, 与所述监测模块连接, 用于向所述重定向器管理的中间节点发 送变化的路由配置信息对应的路由信息失效的通知;
所述中继还包括:
丢弃模块, 用于丟弃路由信息失效的通知;
查询模块, 分别与所述丢弃模块、 所述緩存模块及所述删除模块连接, 与 所述通知模块通信连接, 用于查询是否订阅了失效的路由信息, 若是, 则通知 删除模块删除该失效的路由信息; 若否, 则将所述路由信息失效的通知发送给 所述丢弃模块。
本发明实施例提供的另一种路由信息配置系统, 包括重定向器与中继, 所 述重定向器包括用于存储到各目标节点的路由配置信息的路由存储模块, 和与 该路由存储模块连接的、 用于查询路由配置信息并才 据该路由配置信息生成携 带路由信息的路由指示信息的路由指示模块; 所述中继包括与所述路由指示模 块连接的、 用于根据路由信息转发业务请求消息的转发模块, 和与所述转发模 块连接的、 用于緩存所述路由信息的緩存模块, 和与所述緩存模块连接的、 用 于删除失效的路由信息的删除模块, 所述重定向器还包括:
监测模块, 与所述路由存储模块连接, 用于监测所述路由配置信息的变化; 通知模块, 与所述监测模块连接, 与所述删除模块通信连接, 用于向请求 路由信息的中间节点发送变化的路由配置信息对应的路由信息失效的通知; 路由请求存储模块, 分别与所述路由指示模块及所述通知模块连接, 用于 存储请求路由信息的中间节点的地址信息以及与该请求的路由信息对应的路由 配置信息。
本发明实施例提供的一种路由信息更新的方法, 包括:
监测到路由配置信息的变化时, 发送所述路由配置信息对应的路由信息失 效的通知;
根据所述通知删除所述失效的路由信息。
基于上述技术方案, 本发明实施例具有以下有益的技术效果:
当重定向器中的路由配置信息发生变化时, 重定向器可及时通知该重定向 器管理的所有节点, 或者其中订阅该路由配置信息的节点, 之前订阅的路由指 示信息失效, 或者进一步发送新的路由指示信息, 使得中继中存储的路由信息
可以得到自动、 快速、 及时的更新, 避免了由于不能及时通知路由信息变化而 按照失效路由转发业务请求消息引起错发业务消息的后果, 在对消息交互实时 性及服务质量要求较高的应用场合下, 克服了由于错发业务请求引起的应用的 中断, 与现有技术相比, 保证了业务请求消息的正确转发, 提高了服务质量。 附图说明
图 1为现有技术 Diameter重定向消息的系统结构示意图。
图 2为本发明实施例提供的重定向器实施例一的结构示意图。
图 3为本发明实施例提供的重定向器实施例二的结构示意图。
图 4为本发明实施例提供的中继实施例一的结构示意图。
图 5为本发明实施例提供的中继实施例二的结构示意图。
图 6为本发明实施例提供的中继实施例三的结构示意图。
,图 7为本发明实施例提供的路由信息配置系统实施例一的结构示意图。 图 8为本发明实施例提供的路由信息配置系统实施例二的结构示意图。 ' 图 9为本发明实施例提供的路由信息配置系统实施例三的结构示意图。 图 10为本发明实施例提供的路由信息配置系统实施例四的结构示意图。 图 11为本发明实施例提供的路由信息更新方法的基本流程图。
图 12为本发明实施例提供的路由信息更新方法实施例一的流程图。
图 13为本发明实施例提供的路由信息更新方法实施例二的流程图。
图 14为本发明实施例提供的路由信息更新方法实施例三的流程图。 具体实施方式
本发明实施例在重定向器中设置监测模块, 来监测路由配置信息的变化, 还可以进一步设置路由请求存储模块, 来存储订阅路由信息的中间节点的地址 信息; 当路由配置信息发生变化时, 主动、 及时通知该重定向器所管理的中间 节点或者其中请求过与变化的路由配置信息对应的路由信息的中间节点, 及时
删除失效的路由信息, 或进一步更新失效的路由信息, 实现及时停用失效的路 由信息、 更新路由信息。 本发明的各实施例适用于 AAA协议, 尤其适用于 Diameter协议。
图 2所示为本发明实施例提供的重定向器实施例一的结构示意图, 该重定 向器包括依次连接的路由指示模块 12、 路由存储模块 11、 监测模块 13与通知 模块 14。 其中, 路由存储模块 11用于存储到各目标节点的路由配置信息, 该路 由配置信息可以包括各中间节点到各目标节点的路由信息; 路由指示模块 12用 于接收各中间节点发送的重定向请求消息, 根据该重定向请求消息, 从路由存 储模块 11中查找到对应的路由配置信息, 据此生成携带路由信息的路由指示信 息, 以指示发送重定向请求消息的中间节点如何将业务请求消息路由到目标节 点; 监测模块 13用于监测路由存储模块 11 中路由配置信息的变化, 还可以从 路由存储模块 11中获取变化后的新的路由配置信息对应的新的路由信息; 通知 模块 14用于向重定向器管理的中间节点发送变化的路由配置信息对应的路由信 息失效的通知。 此外, 作为通知模块 14的附加功能, 还可以向重定向器管理的 中间节点发送代替失效的路由信息的新的路由信息。
设置监测模块可以监测到路由配置信息的变化情况, 当监测到路由配置信 息变化时,设置的通知模块可以及时通知重定向器管理的中间节点(即: 中继), 避免了由于不能及时通知路由信息变化而按照失效路由转发业务请求消息引起 错发业务消息的后果, 在对消息交互实时性及服务质量要求较高的应用场合下, 克服了由于错发业务请求引起的应用的中断。
图 3所示为本发明实施例提供的重定向器实施例二的结构示意图, 该实施 例中, 重定向器还包括路由请求存储模块 15 , 其分别与路由指示模块 12及通知 模块 14连接, 用于存储请求路由信息(即: 重定向请求消息)的中间节点的地 址信息以及与该请求的路由信息对应的路由配置信息; 相应的, 通知模块 14具 体用于根据路由请求存储模块 15中存储的中间节点的地址信息与路由配置信息 的对应关系, 向请求失效的路由信息的中间节点发送路由信息失效的通知, 而
不用向重定向器管理的所有中间节点发送路由信息失效的通知。 此外, 重定向 器还可以包括节点老化检测模块 16,分别与路由请求存储模块 15及路由指示模 块 12连接, 用于检测请求路由信息的中间节点的活动状态, 即: 根据中间节点 与路由指示模块 12的信息交互状态, 删除路由请求存储模块 15中存储的、 超 过预定的时间段未活动的 (即: 未与路由指示模块 12交互信息)的中间节点的 地址信息以及与该请求的路由信息对应的路由配置信息, 以避免向老化的 (包 括已经不存在或者长时间不活动两种情况) 中间节点发送无效信息。 这样, 就 避免了不必要的信息发送, 减少了信息发送量, 减轻了重定向器的工作负担, 提高了其工作效率; 同时, 也减少了网络流量。
图 3中, 作为通知模块 14的附加功能, 还可以向重定向器管理的中间节点 发送代替失效的路由信息的新的路由信息。 发送新的路由信息后, 中间节点便 可以以新的路由信息更新失效的路由信息, 这样, 就保证了业务请求消息的正 确转发, 提高了服务质量。
另外, 实际应用中, 路由请求存储模块 15可以与路由存储模块 11一体设 置。
图 4所示为本发明实施例提供的中继实施例一的结构示意图, 该中继即为 转发业务请求消息的中间节点, 其包括依次连接的转发模块 21、 緩存模块 22、 删除模块 24、 查询模块 25与丢弃模块 26, 緩存模块 22还与查询模块 25连接。 另夕卜,还可以包括分别与緩存模块 22及删除模块 24连接的计时模块 23。其中, 转发模块 21用于根据路由信息(重定向器返回的路由指示信息中携带的路由信 息或者緩存模块 22緩存的有效期内的路由信息)转发业务请求消息; 緩存模块 22用于緩存重定向器发送的处于有效期内的路由信息; 由于重定向器向中继发 送的可以緩存的路由信息都有指定的有效期, 因此,计时模块 23对緩存模块 22 緩存的路由信息的有效期进行计时, 当有效期满时, 通知删除模块 24; 删除模 块 24用于删除超过有效期以及失效的路由信息; 查询模块 25在收到重定向器 发送的路由信息失效的通知后, 用于查询是否订阅该失效的路由信息, 若是,
则通知删除模块 24删除緩存模块 22緩存的该失效的路由信息; 若否, 则将路 由信息失效的通知发送给丢弃模块 26; 丢弃模块 26用于丢弃与緩存模块 22緩 存的路由信息无关的消息, 此处, 包括路由信息失效的通知。
当重定向器向所有管理的中间节点发送某一路由信息失效的通知时, 查询 模块可以查询是否緩存该失效的路由信息, 从而可以保证正确删除失效的路由 信息。
若重定向器发送路由信息失效的通知时, 还同时发送了代替失效的路由信 息的新的路由信息, 则丢弃模块 26在根据查询模块 25的指示丟弃路由信息失 效的通知时, 作为附加功能, 还可以同时丟弃代替失效的路由信息的新的路由 信息, 即丟弃模块 26丟弃的与緩存模块 22緩存的路由信息无关的消息, 包括 路由信息失效的通知与代替失效的路由信息的新的路由信息。
图 5所示为本发明实施例提供的中继实施例二的结构示意图,该实施例中, 中继还包括更新模块 27, 其分别与查询模块 25及缓存模块 22连接, 在緩存模 块 22緩存了重定向器发送的失效的路由信息的情况下, 以重定向器发送的新的 路由信息更新緩存模块 22緩存的相应的失效的路由信息。
更新模块可以将失效的路由信息更新为新的路由信息,从而确保中继正确、 快速、 及时地转发业务请求消息, 提高服务质量。
图 6所示为本发明实施例提供的中继实施例三的结构示意图, 其包括依次 连接的转发模块 21、 緩存模块 22、 删除模块 24, 以及与緩存模块 22连接的更 新模块 27, 另外, 还可以包括分别与緩存模块 22及删除模块 24连接的计时模 块 23。 该实施例中, 各模块的功能与上述实施例中各相应模块的功能相同。 不 同的是, 在重定向器发送的緩存模块 22中緩存的路由信息失效的情况下, 由更 新模块 27直接以重定向器发送的新的路由信息更新緩存模块 22緩存的相应的 失效的路由信息, 而不需查询緩存模块 22中是否存储了相应的路由信息, 减少 了查询路由信息的时间, 提高了消息转发效率。
图 7所示为本发明实施例提供的路由信息配置系统实施例一的结构示意图,
该路由信息配置系统包括通信连接的重定向器与中继。其中,重定向器采用图 2 所示的重定向器, 中继采用图 4所示的中继, 中继中的转发模块 21与重定向器 中的路由指示模块 12通信连接, 以向路由指示模块 12请求路由信息, 并接收 路由指示模块 12返回的路由指示信息; 中继中的查询模块 25与重定向器中的 通知模块 14通信连接, 接收到通知模块 14发送的路由信息失效的通知后, 来 查询是否订阅了失效的路由信息。该实施例中的中继也可以不包括计时模块 23。
图 8所示为本发明实施例提供的路由信息配置系统实施例二的结构示意图, 该实施例中, 通知模块 14还具有发送代替失效的路由信息的新的路由信息的功 能; 相应的, 中继采用图 5所示的中继。
图 9所示为本发明实施例提供的路由信息配置系统实施例三的结构示意图, 该实施例中, 重定向器采用图 3 所示的重定向器, 而中继采用的是现有技术, 即: 其由依次连接的转发模块 21、 緩存模块 22、 删除模块 24与计时模块 23构 成, 其中, 转发模块 21与路由指示模块 12通信连接, 以向路由指示模块 12请 求路由信息, 并接收路由指示模块 12返回的路由指示信息; 通知模块 14与删 除模块 24连接。 通知模块 14向删除模块 24发送中继缓存的某一路由信息失效 的通知, 删除模块 24根据通知模块 14发送的路由信息失效的通知, 删除緩存 模块 22中緩存的、 失效的路由信息。 该实施例中的中继也可以不包括计时模块 23。
图 10所示为本发明实施例提供的路由信息配置系统实施例四的结构示意 图, 其中, 通知模块 14具有同时向请求失效的路由信息的中继发送路由信息失 效的通知以及代替失效的路由信息的新的路由信息的功能; 相应的, 中继采用 图 6所示的中继, 更新模块 27与通知模块 14通信连接, 以通知模块 14发送的 新的路由信息更新緩存模块 22中存储的、 失效的相应路由信息。
在图 9或图 10所示的路由信息配置系统中,重定向器也可以采用不包括节 点老化检测模块 16的实施例; 路由请求存储模块 15与路由存储模块 11可以一 体设置。
假设本发明的中继接收到一条客户端发送的业务请求消息, 由于在緩存模 块 22中未找到路由信息, 不知如何向目标节点转发该业务请求消息, 该中继的 缺省路由配置为重定向器, 则其向重定向器发送重定向请求; 重定向器接收到 重定向请求后, 查询其存储的路由配置信息, 获取到目标节点的路由信息, 并 生成携带该路由信息的路由指示信息, 该路由指示信息还指定路由信息的有效 期, 即可以在该有效期内緩存该路由信息; 中继缓存该路由信息后, 在其有效 期内, 中继接收到客户端发送的相同的业务请求消息时, 便可根据之前緩存的 路由信息直接转发该业务请求消息, 而不需要重新发送重定向请求来获取路由 信息。 只有在路由信息的有效期满, 或者出现路由节点出现故障时, 中继才会 删除无效的路由信息, 重新向重定向器发起重定向请求。 在路由信息的有效期 间, 若重定向器中集中配置的路由配置信息发生变化时, 便可通过本发明提供 的上述系统及时通知中继, 以实现对路由信息的更新。
图 11所示为本发明实施例提供的路由信息更新方法的基本流程图,其包括: 步骤 101 ,监测到路由配置信息的变化时,发送该路由配置信息对应的路由 信息失效的通知;
步骤 102, 根据路由信息失效的通知, 删除緩存的失效的路由信息。
当监测到路由配置信息发生变化时, 便发出相应的路由信息失效的通知, 及时删除失效的路由信息, 避免了由于不能及时通知路由信息变化而按照失效 路由转发业务请求消息弓 I起错发业务消息的后果, 在对消息交互实时性及服务 质量要求较高的应用场合下, 克服了由于错发业务请求引起的应用的中断。
图 12所示为本发明实施例提供的路由信息更新方法实施例一的流程图,该 实施例可基于图 7所示的路由信息配置系统实现, 其具体包括以下步骤:
步骤 201,当监测模块 13监测到路由存储模块 11中存储的路由配置信息的 发生变化时, 通知模块 14向查询模块 25发送该路由配置信息对应的路由信息 失效的通知, 该通知可以仅仅是路由信息涉及的域或应用发生了变化;
步骤 202, 查询模块 25查询緩存模块 22中是否緩存有该失效的路由信息,
如是, 则通知删除模块 24删除緩存模块 22中该失效的路由信息, 然后执行步 驟 203; 否则, 将路由信息失效的通知转发给丢弃模块 26, 然后执行步骤 204; 步驟 203 ,删除模块 24删除緩存模块 22中緩存的失效的路由信息,然后执 行步骤 205;
步骤 204, 丢弃模块 26丟弃路由信息失效的通知;
步驟 205 , 结束。
基于图 8所示的路由信息配置系统, 步驟 201中, 发送路由信息失效的通 知时, 还可以同时发送代替该失效的路由信息的新的路由信息; 相应的, 步骤 202中,如緩存模块 22中緩存有失效的路由信息,则查询模块 25将路由信息失 效的通知与新的路由信息发送给更新模块 27; 步骤 203相应为: 更新模块 27以 新的路由信息替换缓存模块 22中緩存的相应的、 失效的路由信息, 实现对路由 信息的更新。
图 13所示为本发明实施例提供的路由信息更新方法实施例二的流程图,该 实施例可基于图 9所示的路由信息配置系统实现, 其具体包括以下步骤:
步骤 301 ,当监测模块 13监测到路由存储模块 11中存储的路由配置信息的 发生变化时, 通知模块 14从路由请求存储模块 15中查询请求与变化的路由配 置信息对应的路由信息的中间节点的地址信息, 并根据该地址信息, 向该中间 节点中的删除模块 24发送该路由配置信息对应的路由信息失效的通知;
步骤 302, 删除模块 24删除緩存模块 22中緩存的失效的路由信息。
图 14所示为本发明实施例提供的路由信息更新方法实施例三的流程图,该 实施例可基于图 10所示的路由信息配置系统实现, 其具体包括以下步骤:
步骤 401 ,当监测模块 13监测到路由存储模块 11中存储的路由配置信息的 发生变化时, 通知模块 14接收监测模块 13发送的与新的路由配置信息对应的 新的路由信息, 从路由请求存储模块 15中查询请求与变化的路由配置信息对应 的路由信息的中间节点的地址信息, 并根据该地址信息, 向该中间节点中的更 新模块 27发送该路由配置信息对应的路由信息失效的通知以及新的路由信息;
步骤 402, 更新模块 27以新的路由信息更新緩存模块 22中緩存的相应的、 失效的路由信息。
在图 13与图 14所示的实施例中,节点老化检测模块 16还可以实时检测路 由请求存储模块 15中存储的请求路由信息的中间节点的活动状态, 在其超过预 定的时间段未与路由指示模块 12交互信息时, 删除路由请求存储模块 15中存 储的该中间节点的地址信息以及其请求的路由信息对应的路由配置信息, 以避 免向老化的中间节点发送无效信息, 从而减轻网络负担。
本发明实施例总的有益效果:
路由配置信息发生变化时, 可以及时删除失效的路由信息, 避免了由于不 能及时通知路由信息变化而按照失效路由转发业务请求消息引起错发业务消息 的后果, 在对消息交互实时性及服务盾量要求较高的应用场合下, 克服了由于 错发业务诸求引起的应用的中断; 可以自动、 快速、 及时地更新緩存的路由信 息, 保证了业务请求消息的正确转发, 提高了服务质量。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发 明的精神和范围。 这样, 倘若本发明的这些修改和变型属 于本发明权利要求及 其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。
Claims
1、一种重定向器, 包括用于存储到各目标节点的路由配置信息的路由存储 模块, 和与该路由存储模块连接的路由指示模块, 该路由指示模块用于查询路 由配置信息, 并根据该路由配置信息生成携带路由信息的路由指示信息, 其特 征在于还包括:
监测模块, 与所述路由存储模块连接, 用于监测所述路由配置信息的变化; 通知模块, 与所述监测模块连接, 用于向所述重定向器管理的中间节点发 送变化的路由配置信息对应的路由信息失效的通知。
2、根据权利要求 1所述的重定向器,其特征在于所述监测模块进一步用于-. 获取变化后的新的路由配置信息对应的新的路由信息; 所述通知模块进一步用 于: 向所述重定向器管理的中间节点发送代替失效的路由信息的新的路由信息。
3、根据权利要求 1所述的重定向器,其特征在于还包括路由请求存储模块, 分别与所述路由指示模块及所述通知模块连接, 用于存储请求路由信息的中间 节点的地址信息以及与该请求的路由信息对应的路由配置信息; 所述通知模块 用于: 向请求路由信息的中间节点发送变化的路由配置信息对应的路由信息失 效的通知。
4、根据权利要求 3所述的重定向器,其特征在于所述监测模块进一步用于: 获取变化后的新的路由配置信息对应的新的路由信息; 所述通知模块进一步用 于: 向请求路由信息的中间节点发送代替失效的路由信息的新的路由信息。
5、根据权利要求 3或 4所述的重定向器, 其特征在于还包括节点老化检测 模块, 分别与所述路由请求存储模块及所述路由指示模块连接, 用于检测请求 路由信息的中间节点的活动状态, 以及删除所述路由请求存储模块中存储的、 超过预定的时间段未活动的中间节点的地址信息以及与该请求的路由信息对应 的路由配置信息。
6、根据权利要求 3或 4所述的重定向器, 其特征在于所述路由请求存储模 块与所述路由存储模块一体设置。
7、 一种中继, 包括用于根据路由信息转发业务请求消息的转发模块, 和与 所述转发模块连接的、 用于緩存所述路由信息的緩存模块, 和与所述緩存模块 连接的、 用于删除失效的路由信息的删除模块, 其特征在于还包括:
丢弃模块, 用于丟弃路由信息失效的通知;
查询模块, 分别与所述丟弃模块、 所述緩存模块及所述删除模块连接, 用 于查询是否订阅了失效的路由信息, 若是, 则通知删除模块删除该失效的路由 信息; 若否, 则将所述路由信息失效的通知发送给所述丟弃模块。
8、 根据权利要求 7所迷的中继, 其特征在于还包括计时模块, 分别与所述 緩存模块及所述删除模块连接, 用于对所述緩存模块緩存的路由信息的有效期 进行计时, 在有效期满时通知所述删除模块删除该有效期满的路由信息。
9、 根据权利要求 7所迷的中继, 其特征在于所述丢弃模块进一步用于: 丢 弃代替失效的路由信息的新的路由信息。
10、 根据权利要求 7、 8或 9所述的中继, 其特征在于还包括更新模块, 分 别与所述查询模块及所述緩存模块连接, 用于以新的路由信息更新所述緩存模 块中存储的相应的失效的路由信息。
11、 一种中继, 包括用于根据路由信息转发业务请求消息的转发模块, 和 与所述转发模块连接的、 用于緩存所述路由信息的緩存模块, 和与所述緩存模 块连接的、 用于删除失效的路由信息的删除模块, 其特征在于还包括:
更新模块, 与所述緩存模块连接, 用于以新的路由信息更新所述緩存模块 中存储的相应的失效的路由信息。
12、 根据权利要求 11所述的中继, 其特征在于还包括计时模块, 分别与所 述緩存模块及所述删除模块连接, 用于对所述緩存模块缓存的路由信息的有效 期进行计时, 在有效期满时通知所述删除模块删除该有效期满的路由信息。
13、 一种路由信息配置系统, 包括重定向器与中继, 所述重定向器包括用 于存储到各目标节点的路由配置信息的路由存储模块, 和与该路由存储模块连 接的、 用于查询路由配置信息并根据该路由配置信息生成携带路由信息的路由
指示信息的路由指示模块; 所述中继包括与所述路由指示模块连接的、 用于根 据路由信息转发业务请求消息的转发模块, 和与所述转发模块连接的、 用于緩 存所述路由信息的緩存模块, 和与所述緩存模块连接的、 用于删除失效的路由 信息的删除模块, 其特征在于所述重定向器还包括:
监测模块, 与所述路由存储模块连接, 用于监测所述路由配置信息的变化; 通知模块, 与所述监测模块连接, 用于向所述重定向器管理的中继发送变 化的路由配置信息对应的路由信息失效的通知;
所述中继还包括:
丢弃模块, 用于丟弃路由信息失效的通知;
查询模块, 分别与所述丢弃模块、 所述緩存模块及所述删除模块连接, 与 所述通知模块通信连接, 用于查询是否订阅了失效的路由信息, 若是,, 则通知 删除模块删除该失效的路由信息; 若否, 则将所述路由信息失效的通知发送给 所述丟弃模块。
14、根据权利要求 13所述的路由信息配置系统, 其特征在于所述中继还包 括计时模块, 分别与所述緩存模块及所迷删除模块连接, 用于对所述緩存模块 緩存的路由信息的有效期进行计时, 在有效期满时通知所述删除模块删除该有 效期满的路由信息。
15、 根据权利要求 13或 14所述的路由信息配置系统, 其特征在于所述监 测模块进一步用于: 获取变化后的新的路由配置信息对应的新的路由信息; 所 述通知模块进一步用于: 向所述重定向器管理的中继发送代替失效的路由信息 的新的路由信息; 所述中继还包括更新模块, 分别与所述查询模块及所述緩存 模块连接, 用于以新的路由信息更新所述緩存模块中存储的相应的失效的路由 信息。
16、 一种路由信息配置系统, 包括重定向器与中继, 所述重定向器包括用 于存储到各目标节点的路由配置信息的路由存储模块, 和与该路由存储模块连 接的、 用于查询路由配置信息并根据该路由配置信息生成携带路由信息的路由
指示信息的路由指示模块; 所述中继包括与所述路由指示模块连接的、 用于根 据路由信息转发业务请求消息的转发模块, 和与所述转发模块连接的、 用于緩 存所述路由信息的緩存模块, 和与所述緩存模块连接的、 用于删除失效的路由 信息的删除模块, 其特征在于所述重定向器还包括:
监测模块, 与所述路由存储模块连接, 用于监测所述路由配置信息的变化; 通知模块, 与所述监测模块连接, 与所述删除模块通信连接, 用于向请求 路由信息的中继发送变化的路由配置信息对应的路由信息失效的通知;
路由请求存储模块, 分别与所述路由指示模块及所述通知模块连接, 用于 存储请求路由信息的中继的地址信息以及与该倩求的路由信息对应的路由配置 信息。
17、根据权利要求 16所述的路由信息配置系统, 其特征在于所述中继还包 括计时模块, 分别与所述緩存模块及所述删除模块连接, 用于对所述緩存模块 緩存的路由信息的有效期进行计时, 在有效期满时通知所述删除模块删除该有 效期满的路由信息。
18、 根据权利要求 16或 17所述的路由信息配置系统, 其特征在于所述监 测模块进一步用于: 获取变化后的新的路由配置信息对应的新的路由信息; 所 述通知模块进一步用于: 向请求路由信息的中继发送代替失效的路由信息的新 的路由信息; 所述中继还包括更新模块, 与所述緩存模块连接, 与所述通知模 块通信连接, 用于以新的路由信息更新所述緩存模块中存储的相应的失效的路 由信息。
19、 根据权利要求 16或 17所述的路由信息配置系统, 其特征在于所述重 定向器还包括节点老化检测模块, 分别与所述路由请求存储模块及所述路由指 示模块连接, 用于检测请求路由信息的中继的活动状态, 以及删除所述路由请 求存储模块中存储的、 超过预定的时间段未活动的中继的地址信息以及与该请 求的路由信息对应的路由配置信息。
20、 根据权利要求 16或 17所述的路由信息配置系统, 其特征在于所述路
由请求存储模块与所述路由存储模块一体设置。
21、 一种路由信息更新的方法, 其特征在于包括:
监测到路由配置信息的变化时, 发送所述路由配置信息对应的路由信息失 效的通知;
根据所述通知删除所述失效的路由信息。
22、 根据权利要求 21所述的路由信息更新的方法, 其特征在于删除所'述失 效的路由信息包括: 查询是否订阅所述失效的路由信息, 若是, 则删除所述失 效的路由信息; 若否, 则丟弃所述路由信息失效的通知。
23、 根据权利要求 21所述的路由信息更新的方法, 其特征在于监测到路由 配置信息的变化时, 发送所述路由配置信息对应的路由信息失效的通知包括: 监测到路由配置信息的变化时, 查询请求变化的路由配置信息对应的路由信息 的中间节点的地址信息, 并根据该地址信息向所述中间节点发送所述路由配置 信息对应的路由信息失效的通知。
24、 根据权利要求 22或 23所述的路由信息更新的方法, 其特征在于发送 所述路由配置信息对应的路由信息失效的通知时, 进一步包括: 发送代替该失 效的路由信息的新的路由信息。
25、 根据权利要求 24所述的路由信息更新的方法, 其特征在于删除所述失 效的路由信息包括: 以所述新的路由信息更新所述失效的路由信息。
26、 根据权利要求 23或 25所述的路由信息更新的方法, 其特征在于还包 括: 检测请求路由信息的中间节点的活动状态, 并删除预先存储的超过预定的 时间段未活动的中间节点的地址信息以及其请求的路由信息对应的路由配置信 息。
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EP2107725B1 (en) | 2018-09-05 |
EP2107725A4 (en) | 2010-03-31 |
CN101212420B (zh) | 2010-09-29 |
CN101212420A (zh) | 2008-07-02 |
EP2107725A1 (en) | 2009-10-07 |
US9118598B2 (en) | 2015-08-25 |
US20090185494A1 (en) | 2009-07-23 |
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