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    • 专利摘要:
    method and system for realizing reachability of the destination route in the access ring of the packet transport network. The present invention relates to a method of accessibility of the access ring destination route of a packet transport network (ptn). the method comprises the link function between an address resolution protocol module (arp) and a static route module which is defined in a three-layer interface of a convergence node, the convergence node automatically updates the route input static discovery that matches a destination address of an access node according to the arp entry discovered about each access node; and the convergence node reports a current discovered static route entry that matches the access node's destination address to a central node and to the other networks according to a dynamic route protocol. the present invention also refers to a system of accessibility of a destination route in an access ring of a ptn at the same time. by applying the method and system of the present invention, where breaks occur simultaneously in the connections between the access nodes of the access ring and the synchronization line between the convergence nodes, all access nodes associated with another node of convergence can communicate normally with the central node and other networks, so as to improve the failure resilience of the access node in ptn.
    公开号:BR112012022549B1
    申请号:R112012022549-9
    申请日:2010-11-12
    公开日:2021-06-01
    发明作者:Wei Li；Daofeng Liu
    申请人:Zte Corporation；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    [001] The present invention refers to the Packet Transport Network (PTN) technology, in particular, to a method and a system to perform accessibility of a destination route in an access ring of a PTN. BACKGROUND OF THE INVENTION
    [002] In several existing PTNs, such as telecommunications networks and corporate networks, an access ring model is generally adopted to ensure that a service is not interrupted in the forward link nodes due to a single node failure. Specifically, Figure 1 is a diagram showing a topological structure of an access ring model in a PTN, as shown in Figure 1, a two-layer ring network is formed by the interconnection between the nodes of an access ring of two layers and a synchronization wire between convergence nodes 1 and 2; where each node of the two-layer access ring is configured with a destination address, the destination address is on the same network segment with a three-layer interface address of a node connected to a three-layer route ring. For example, as shown in Figure 1, two ports of a convergence node 1 that are linked with the two-layer access ring are configured in a Virtual Local Area Network (VLAN) 100 and VLAN 100 is configured with an address of three layers 100.1.1.253/24, while two convergence node 2 ports that are connected with the two-layer access ring are configured in a VLAN 100 and VLAN 100 is configured with a three-layer address: 100.1.1.254/24 ; node 1 of the two-layer access ring is configured with a VLAN 100 and a three-layer address 100.1.1.1/24, and node 2 of the two-layer access ring is configured with a VLAN 100 and a three-layer address layers 100.1.1.2/24, and so on, access node N is configured with a VLAN 100 and a three-layer address 100.1.1.N/24.
    [003] Before using the PTN network, the following is still required to complete the operation:
    [004] a Spanning Tree Protocol (STP) is initiated at two-layer access ring access nodes, and STP transparent transmission is initiated at convergence nodes 1 and 2 of the two-layer access ring; when the two-layer access ring access nodes are turned on, a cycle is blocked by the STP to ensure that no transmission congestion occurs on the two-layer access ring, where transmission congestion means that data messages are transmitted circularly and constantly in the two-layer access ring so as to form a congestion and occupy the entire bandwidth of the link;
    [005] Dual gateway default routes are configured on all access nodes of the two-layer access ring, so information can be posted on the convergence nodes and then posted on a central node on a convergence ring and in the other networks through two convergence nodes; and
    [006] the interconnection of the three-layer interface is configured and a three-layer route protocol is started at the three-layer ring nodes of the route, where direct routes and static routes are reconfigured at convergence nodes 1 and 2 connected to the two-layer access ring in a dynamic route protocol.
    [007] As can be seen in Figure 1, when the break occurs, the connections between the access nodes of the two-layer access ring or for the synchronized transfer between convergence nodes 1 and 2, all access nodes of the Two-layer access ring can easily access a convergence node, a central node and other networks. However, when disconnection of the links between the access nodes of the two-layer access ring happens and for the synchronized transfer between convergence nodes 1 and 2 at the same time, since the interfaces of convergence nodes 1 and 2 linked with the two-layer access ring are configured with two addresses on the same network segment, only one of the routes calculated by the central node and the other networks by the dynamic route protocol is selected. Therefore, the route can only reach one of the convergence nodes, that is, convergence node 1 or 2, and thus the central node and the other networks do not have routes to all access nodes associated with the another the convergence node, so all access nodes associated with the other convergence node normally cannot communicate with the central node and the other networks. SUMMARY OF THE INVENTION
    [008] In view of this, the main objective of the invention disclosed here is to provide a method and a system to perform accessibility of a destination route in an access ring of a PTN, in order to overcome the defect that some access nodes they cannot communicate with the external network when there are breaks in the links between the access nodes of an access ring and a synchronization wire between the convergence nodes at the same time.
    [009] To achieve the objective, the technical solution of the present disclosure is implemented as follows.
    [010] The invention provides a method to perform reachability of a destination route in a PTN access ring, including:
    [011] set a link function between an Address Resolution Protocol Module (ARP), and a static route module in a three-layer interface of a convergence node;
    [012] automatically update a discovered static route entry corresponding to a destination address of an access node by the convergence node according to an ARP entry discovered about each access node; and, reporting a current discovered route entry corresponding to the destination address of the access node to a central node and the other networks by the convergence node in accordance with a dynamic route protocol.
    [013] In the solution, before adjusting the link function between the ARP module and the static route module in the three-layer interface of the convergence node, the method can further include:
    [014] configure a virtual local area network (VLAN) and a destination address in an access node of a two-layer access ring; configure a Spanning Tree (STP) protocol and a dual gateway default route on the two-layer access ring access node; and configure Transparent STP transmission, a direct route and a static route on the convergence node connected to the node. access; and configure three-layer interface interconnection and dynamic route protocol on nodes of a three-layer route ring.
    [015] In the solution, the method can also include: updating, by the convergence node, the central node and other networks, the corresponding dynamic route entries in their respective dynamic route tables, after the central node and the other networks receive the report.
    [016] In the solution, automatically updating a discovered static route entry corresponding to a destination address of an access node by the convergence node in real time, according to an ARP entry discovered about each access node can be as follows: detect by the convergence node's ARP module whether a new ARP entry is added, and when there is a newly added ARP entry, also determine by the convergence node whether a destination address in the newly added ARP entry and whether a destination address three-layer interface of the convergence node are on the same network segment; if determined that they are on the same network segment, automatically add the static route entry corresponding to the access node's destination address of the access node by the convergence node according to the newly added ARP entry.
    [017] In the solution, the automatic update of a discovered static route entry corresponding to a destination address of an access node by the convergence node in real time, according to an ARP entry discovered about each access node can be next: detect by the convergence node's ARP module if an ARP entry is deleted; when an ARP entry is deleted, it also determines by the convergence node whether a destination address in the suppressed ARP entry and whether a convergence node's three-layer interface address are on the same network segment, if determined to be on the same network segment, automatically delete the static route entry corresponding to the access node destination address of the access node by the convergence node according to the suppressed ARP entry.
    [018] The disclosure also provides a system to perform reachability of a destination route in an access ring of a PTN, comprising: a convergence node and an access node, in which
    [019] the convergence node is configured to automatically update a discovered static route entry corresponding to the destination address of the access node in real time, according to an ARP entry discovered about each access node, and reports a route entry static current discovery corresponding to the access node's destination address for a central node and the other networks according to a dynamic route protocol; and
    [020] the access node is configured to be discovered by the ARP entry by the convergence node.
    [021] In the solution, the system can also include: the central node and the other networks, where
    [022] the central node is configured to receive the current discovered static route input corresponding to the destination address of the access node reported by the convergence node according to the dynamic route protocol, and
    [023] the other networks are configured to receive the current discovered static route input corresponding to the destination address of the access node reported by the convergence node according to the dynamic route protocol. In the solution, the convergence node can refer to more than two convergence nodes; the central node can refer to more than one central node; and the access node refers to more than two access nodes.
    [024] In the solution, the convergence node is additionally configured to update a corresponding dynamic route entry in a dynamic route table after the central node and the other networks receive the report;
    [025] the central node can also be configured to update a corresponding dynamic route entry in a dynamic route table, after the other networks and the exchange network itself receive the report, and
    [026] the other networks can also be configured to update the entries of the corresponding dynamic routes in dynamic route tables, after the central node and the other networks themselves receive the report.
    [027] In the solution, the convergence node. can also be configured to: after a convergence node's Address Resolution Protocol (ARP) Module detects that a new ARP entry is added or that an ARP entry is suppressed and an ARP entry is detected to be added or suppressed, determine whether a destination address in the deleted or added ARP entry and a convergence node's three-layer interface address are on the same network segment and, if determined to be on the same network segment, automatically add or delete the route entry static corresponding to the destination address of the access node according to the added ARP entry and reporting this to the central node and the other networks according to the dynamic route protocol.
    [028] By the method and system to realize accessibility of a destination route in an access ring of a PTN, a convergence node reports a static route corresponding to a destination address of an access node to a central node and other networks according to a dynamic route protocol, so when disconnection between the access nodes of the access ring and the synchronized transfer between the convergence nodes happens at the same time, the central node and the other networks still have a route to all nodes of access nodes associated with the other convergence node, so that all access nodes associated with the other convergence node can normally communicate with the central node and the other networks, thus improving the ability of the access nodes in the PTN network to resist to a glitch. BRIEF DETAILED DESCRIPTION OF THE DRAWINGS
    [029] Figure 1 is a diagram that shows the topological structure of a PTN access ring model;
    [030] Figure 2 is a schematic diagram showing a flow of a method to perform reachability of a destination route in an access ring of a PTN of the present invention;
    [031] Figure 3 is a schematic diagram that shows a flow of a configured method before using a PTN;
    [032] Figure 4 is a schematic diagram showing a flow of a method to perform mode 1;
    [033] Figure 5 is a schematic diagram showing a flow of a method to perform mode 2;
    [034] Figure 6 is a schematic diagram that shows the structure of a system to perform reachability of a destination route in an access ring of a PTN of the present invention. DETAILED DESCRIPTION
    [035] The present invention will also be described below in conjunction with the drawings and specific embodiments in detail.
    [036] As shown in Figure 2, the method to achieve reachability of a destination route in a PTN access ring includes the following steps.
    [037] Step 201: A link function between an ARP module and a static route module is defined in a three-layer interface of a convergence node.
    [038] Here, the three-layer interface of the convergence node can be provided with a switch for the link between the ARP module and the static route module, and the link function can be performed after the switch is turned on.
    [039] The link function is performed specifically as follows: after finding an ARP entry on an access node, the ARP module automatically sends a message related to the ARP entry discovered on the access node to the static route module, and the static route module defines a static route entry corresponding to the destination address of the access node according to the ARP entry in the message after receiving the message.
    [040] Step 202: The convergence node automatically updates a discovered static route entry corresponding to the destination address of the access node according to an ARP entry discovered about each access node.
    [041] Here, taking as an example what is shown in the diagram of the topological structure of an access ring model of a PTN in figure 1, the convergence node 1 adds a static route entry corresponding to 100.1.1.1/32 for its own static route table after finding an ARP entry corresponding to 100.1.1.1 from access node 1, where 32 represents a 32-bit mask, and convergence node 1 finds the ARP entry corresponding to 100.1.1.1 from access node 1, this means that the ARP entry corresponding to 100.1.1.1 of an access node 1 exists in an ARP cache table in the ARP module of convergence node 1.
    [042] In the application, the convergence node automatically updates a discovered static route entry corresponding to a destination address of an access node in real time, according to an ARP entry discovered about each access node.
    [043] The ARP entry discovered about each access node refers to an ARP entry about each access node that is on the same network segment with the three-layer interface of the convergence node; the ARP module of the first convergence node detects whether a three-layer interface in an ARP entry to be discovered about an access node is on the same network segment with the three-layer interface of the convergence node, if they are on the same network segment. network, then the ARP entry is discovered, otherwise the ARP entry about the access node is discarded.
    [044] Step 203: The convergence node reports a current discovered static route entry corresponding to the destination address of the access node to a central node and the other networks according to a dynamic route protocol.
    [045] Here, after the central node and other networks receive the report, the convergence node, the central node and the other networks update the corresponding dynamic route entries in their respective dynamic route tables.
    [046] The convergence node may send a current discovered static route entry message corresponding to the destination address of the access node to the central node and other networks to report the static route to them.
    [047] The convergence node reports the entry of the static route corresponding to the destination address of the access node to the central node and to the other networks in real time according to the dynamic route protocol, therefore, when the disconnection of the 1Links between the access ring access nodes and the synchronized transfer between the convergence nodes, at the same time, the central node and the other networks can also have a route to all access nodes associated with another convergence node, from so that all access nodes associated with another convergence node can communicate normally with the central node and the other networks.
    [048] Before step 201, as shown in figure 3, the method further includes the following steps.
    [049] Step 301: A two-tier access ring access node is configured with a VLAN and a destination address, and then Step 302 is performed.
    [050] Here, the configuration of a destination address is the configuration of a three-layer address, and a configured three-layer address, and a three-layer interface address of a node linked with a three-layer route ring are on the same network segment. For example, as shown in Figure 1, two ports of convergence node 1 that are linked with a two-layer access ring are configured in a VLAN 100 and VLAN 100 has a three-layer address 100.1.1.253/24, while two Convergence Node 2 ports, which are linked with a two-layer access ring, are configured in a VLAN 100 and VLAN 100 has a three-layer address 100.1.1.254/24; node 1 of the two-layer access ring is configured with VLAN 100 and a three-layer address 100.1.1.1/24, and node 2 of the two-layer access ring is configured with VLAN 100 and a three-layer address : 100.1.1.2/24, and so on, access node N is configured with VLAN 100 and a three-layer address: 100.1.1.N/24.
    [051] Step 302: A dual gateway default route and an STP are configured on the two-layer access ring access nodes, and STP transparent transmission, direct routes, and static routes are configured on the convergence nodes connected with the access nodes; and then, Step 303 is performed.
    [052] Here, configuring a dual gateway default route means configuring two default routes, ie two convergence nodes and the default routes function reside in: if no route matches a destination address a route table If an access node is found, the access node sends a data packet to the two convergence nodes.
    [053] Direct route can be specifically configured to report a LAN segment to other nodes by dynamic route protocol, and
    [054] the static route is allocated at a fixed Internet Protocol (IP) address to a Media Access Control (MAC), corresponding to a node to guide the transmission of message data.
    [055] Step 303: Three-layer interface bonding and dynamic route protocol are configured on the three-layer route ring nodes.
    [056] Here, the three-layer route ring nodes include: convergence nodes, a central node and other networks, where the other networks can be a mobile network, or Internet or similar, and the dynamic route protocol is specifically used to automatically compute an optimal path for data transmission by exchanging information between the three-layer route ring nodes according to the function provided by the dynamic route protocol, so as to obtain a dynamic route table.
    [057] In the PTN, the convergence node discovers an ARP entry on each access node in real time according to the connection status of the access ring access nodes, therefore, there can be two circumstances: add or delete the destination route. Mod 1
    [058] For the case of adding a destination route, the modality describes a process of giving a report to a central node and the other networks through a convergence node, whose execution is as shown in Figure 4, which includes the following steps.
    [059] Step 401: Three-layer interface interconnect and a dynamic route protocol are configured on nodes of a three-layer route ring, and then Step 402 is performed.
    [060] Here, the nodes of the three-layer route ring include: the convergence nodes, a central node and other networks, where said other networks can be a cellular, Internet or similar network.
    [061] Step 402: A dual gateway default route and an STP are configured on an access node of a two-layer access ring, STP transparent transmission, a direct route and a static route are configured on a convergence node connected with access nodes; and then step 403 is performed.
    [062] Step 403: The link function between the ARP module and a static route module is set on three-layer interfaces of the convergence nodes, and then Step 404 is performed.
    [063] Step 404: Convergence node ARP module detects if a new ARP entry is added, if there is a newly added ARP entry, Step 405 is executed, otherwise the current processing flow ends.
    [064] Here, the access node sends an ARP request to the convergence node after being connected to the PTN, and then the convergence node returns an ARP response corresponding to the access node and adds a corresponding ARP entry in its ARP cache table itself after receiving the ARP request, and when the ARP module discovers that there is an ARP entry added to the ARP cache table, Step 405 is performed.
    [065] Step 405: The highest convergence node additionally determines whether the destination address in the added ARP entry and whether the convergence node's three-layer interface address are on the same network segment, when determined to be on the same network segment, Step 406 is performed, otherwise the current processing flow ends.
    [066] Here, the process to determine whether the destination address in the added ARP entry and the three-layer interface address of the convergence node are on the same network segment is as follows: determine whether the destination IP address in the ARP entry added is the same as the convergence node's three-tier interface, if they are the same then they are determined to be on the same network segment, and Step 406 is executed, otherwise the current processing flow ends.
    [067] For example, if a destination IP address of an access node is 100.1.1.1/24, and an IP address of a three-layer interface of a convergence node is 100.1.1.253/24, it is considered that the destination IP address of the access node is the same as that of the three-layer interface of the convergence node, and, that the IP address of the access node is 200.1.1.1/24, and the IP address of the convergence node convergence node's three-layer interface is 100.1.1.253/24, it is considered that the access node's destination IP address is different from those of the convergence node's three-layer interface.
    [068] Only an access address of an access node that is on the same network segment with a three-layer interface address of a convergence node can be discovered by the convergence node, that is, only one destination address from an access node on the same network segment can be added to an ARP entry in the convergence node's ARP cache table. Generally, a destination address of an access node that is not on the same network segment with a three-layer interface address of a convergence node can never be discovered by the convergence node; and this step is performed so as to ensure that a destination address added to an ARP entry is on the same network segment with a three-layer interface address of a convergence node.
    [069] Step 406: The convergence node automatically adds the static route entry corresponding to the destination address of the access node according to the newly added ARP entry, and then Step 407 is performed.
    [070] Step 407: Convergence node reports static route added to central node and other networks according to dynamic route protocol, then current processing flow ends.
    [071] Here, the convergence node can send a static route entry added message corresponding to the destination address of the access node to the central node and other networks to report the static route to them.
    [072] After the central node and the other networks receive the report, the convergence node, the central node and the other networks add dynamic route entries corresponding to the static route in their respective dynamic route tables. Modality 2
    [073] For the case of exclusion of a destination route, the modality describes a process to give a report to a central node and the other networks through a convergence node, whose execution is as shown in figure 5, which includes the following phases.
    [074] Step 501: Three-layer interface interconnect and a dynamic route protocol are configured on nodes of a three-layer route ring, and then step 502 is performed.
    [075] Here, the three-layer route ring nodes include:
    [076] convergence nodes, central node and other networks, where said other networks can be a cellular network, Internet or the like.
    [077] Step 502: A dual gateway default route and an STP are configured on an access node of a two-layer access ring, and STP transparent transmission, a direct route and a static route are configured on a convergence node connected with the access node; and Step 503 is performed.
    [078] Step 503: The three-tier interface of the deconverging node is provided with a link function between the ARP module and a static route module, and then Step 504 is performed.
    [079] Step 504: Convergence node ARP module detects if an ARP entry is suppressed, if an ARP entry is suppressed, Step 505 is executed, otherwise the current processing flow ends.
    [080] Here, the convergence node's ARP module sets a timer for each ARP entry in an ARP cache table and the timer is fired when an ARP entry is not used within a certain period of time, usually within 30 seconds . After a period of time expires, the convergence node sends an ARP request to an access node, and then the ARP modules delete the ARP entry in the ARP cache table if the convergence node does not receive an ARP response from the access node. , and then Step 505 is performed. In general, the duration of the timer is 15 to 20 minutes.
    [081] Step 505: The convergence node also determines whether a destination address in the ARP entry suppressed on the same network segment with a three layer interface address of the convergence node, if they are on the same network segment, then the Step 506 is executed, otherwise the current processing stream ends.
    [082] Here, the process for determining whether the destination address in the suppressed ARP entry is on the same network segment with the three-layer interface address of the convergence node is: determining whether the destination IP address in the suppressed ARP entry is the same as that of the convergence node's three-layer interface, if they are the same, then it is determined that they are on the same network segment, and Step 506 is executed, otherwise the current processing flow ends.
    [083] For example, if an access node's destination IP address is 100.1.1.1/24, and the convergence node's three-layer interface IP address is 100.1.1.253/24, it is considered that the Access node destination IP address is the same as that of the three-layer interface of the convergence node, and, if the IP address of the access node is 200.1.1.1/24, and the IP address of the three-layer interface Convergence node layers is 100,1.1.253/24, it is considered that the destination IP address of the access node is different from that of the three layer interface of the convergence node.
    [084] Only a destination address of an access node that is on the same network segment with a three-layer interface address of a convergence node can be discovered by the convergence node, that is, only one destination address from an access node on the same network segment can be added to an ARP entry in the convergence node's ARP cache table. Generally, a destination address of an access node that is not on the same network segment with a three-layer interface address of a convergence node can never be discovered by the convergence node, and this step is intended to ensure that the destination address in the suppressed ARP entry is on the same network segment with the three-layer interface address of the convergence node.
    [085] Step 506: The convergence node automatically deletes an entry from the static route corresponding to the destination address of the access node according to the suppressed ARP entry, and then Step 507 is performed.
    [086] Step 507: The convergence node deletes a dynamic route entry corresponding to the static route from a dynamic route table and informs this to the central node and other networks according to the dynamic route protocol, and then the current processing stream ends.
    [087] Here, the convergence node can send a message of the excluded static route entry corresponding to the destination address of the access node to the central node and other networks to report the static route to them.
    [088] The central node and other networks suppress the corresponding dynamic route entries for the static route from their respective dynamic route tables after receiving the report.
    [089] To perform the method, as shown in Figure 6, the present invention further provides a system to perform the reachability of a destination route in an access ring of a PTN, including: a convergence node 61 and a node of access 62, where the convergence node 61 is configured to automatically update a discovered static route entry corresponding to the destination address of the access node according to an ARP entry discovered about each access node, and report a discovered static route entry current corresponding to the destination address of the central node's access node and the other networks according to a dynamic route protocol;
    [090] here, the three-layer interface of the convergence node 61 is provided with a link function between the ARP module and a static route module.
    [091] It should be noted that convergence node 61 refers to more than two convergence nodes 61.
    [092] Access node 62 is configured to be discovered by the ARP entry by convergence node 61.
    [093] Here, it should be noted that access node 62 refers to more than two access nodes.
    [094] The system may further include a central node 63, other networks 64, wherein the central node 63 is configured to receive the input of the current discovered static route corresponding to the destination address of the access node reported by the convergence node 61 of according to the dynamic route protocol.
    [095] Here, it should be noted that the central node 63 refers to more than one.
    [096] The other networks 64 are configured to receive the current discovered static route input corresponding to the destination address of the access node reported by the convergence node 61 according to the dynamic route protocol.
    [097] Convergence node 61 is further configured to:
    [098] an ARP module of convergence node 61 detects whether a new ARP entry is added or an ARP entry is suppressed, if an ARP entry is detected to be added or suppressed, the convergence node 61 also determines whether the destination address in the Added or deleted ARP entry and a convergence node's three-layer interface address are on the same network segment, if determined to be on the same network segment, the convergence node automatically adds or deletes an entry from the corresponding static route to the destination address of the access node according to the added ARP entry and reports this to the central node 63 and the other networks 64 according to the dynamic route protocol.
    [099] The convergence node 61 is also configured with STP transparent transmission, a direct route and a static route, and additionally configured with the interconnection of the three layer interface and the dynamic route protocol;
    [100] Access node 62 is also configured with a VLAN and a destination address, as well as an STP and a default gateway route;
    [101] the central node 63 is further configured with the interconnection of the three-layer interface and the dynamic route protocol, and
    [102] the other 64 networks are still configured with the interconnection of the three-layer interface and the dynamic route protocol.
    [103] convergence node 61 is also configured to update a corresponding dynamic route entry in a dynamic route table after central node 63 and the other networks 64 receive the report;
    [104] the central node 63 is also configured to update a corresponding dynamic route entry in a dynamic route table after the other networks 64 and the central node 63 themselves receive the report, and
    [105] the other networks 64 are also configured to update the corresponding dynamic route entries in the dynamic route tables after central node 63 and other networks 64 receive the report.
    [106] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection thereof; any modifications, substitutions, equivalences, and improvements are within the spirit and principles of the present invention and, therefore, shall be considered to fall within the scope of protection of the present invention.
    权利要求:
    Claims (9)
    [0001]
    1. Method for achieving accessibility of a destination route in an access ring of a packet transport network, PTN, CHARACTERIZED by the fact that a two-layer ring network is formed by the interconnection between at least two access nodes (62 ) in a two-layer access ring and a synchronization wire between at least two convergence nodes (61); where each access node (62) in the two-layer access ring is configured with a destination address on the same network segment with a three-layer interface address of a node connected to a three-layer route ring, which comprises at least two convergence nodes (61), a central node (63) and other networks (64); a Spanning Tree Protocol, STP, is configured on at least two access nodes (62) of the two-tier access ring, and STP transparent transmission is configured on at least two convergence nodes (61) of the access ring. two layers; Dual gateway default routes are configured on at least two access nodes (62) of the two-tier access ring, so that information can be posted on at least two convergence nodes (61) and then posted on one. central node (63) and in the other networks (64) through at least two convergence nodes (61); three-layer interface interconnect and a three-layer route protocol are configured on the three-layer ring nodes of the route; and direct routes and static routes are reconfigured in at least two convergence nodes (61) connected to the two-layer access ring in a dynamic route protocol; and the method comprises: setting a link function between an Address Resolution Protocol Module, ARP, and a static route module on a three-layer interface of each of the at least two convergence nodes (61, 201, 403 , 503); automatically update a discovered static route entry corresponding to a destination address of an access node (62) by each of the at least two convergence nodes (61) in real time according to an ARP entry discovery about each access node (62, 202); and, reporting, by each of the at least two convergence nodes (61) according to a dynamic route protocol, an entry of the current discovered static route corresponding to the destination address of the access node (62) to a central node ( 63) and the other networks (64, 203, 407, 507), in which the adjustment of the link function between the ARP module and the static route module in the three-layer interface of each of the at least two convergence nodes ( 61), and automatically update the discovered static route entry corresponding to a destination address of an access node (62) by each of the at least two convergence nodes (61) in real time, according to an ARP discovery entry on each access node (62), comprises: detecting, by the ARP module of each of the at least two convergence nodes (61), whether a three-layer interface at an ARP input on an access node (62) is in a same network segment with the three-layer interface of each of the at least two nodes of convergence (61), and in response to the detection that the two three-layer interfaces are on the same network segment, find the ARP entry; after finding the ARP entry on the access node (62), automatically send, by the module ARP, a message related to the ARP input about the access node (62) to the static route module, where the access node (62) is on a same network segment with the three layer interface of each of the at least two convergence nodes; and sending, by the static route module, the static route entry corresponding to the destination address of the access node (62) according to the ARP entry in the message after receiving the message.
    [0002]
    2. Method, according to claim 1, CHARACTERIZED by the fact that it additionally comprises: updating, by at least two convergence nodes (61), the central node (63) and other networks (64), the corresponding dynamic route entries in their respective dynamic route tables, after the central node (63) and the other networks (64) receive the report.
    [0003]
    3. Method according to claim 1, CHARACTERIZED by the fact that the automatic update of a discovered static route entry corresponding to a destination address of an access node (62) by each of the at least two convergence nodes (61) in real time, according to an ARP entry discovered about each access node (62) is as follows: detect by the ARP module of each of the at least two convergence nodes (61), whether a new ARP entry is added (404), and when there is a newly added ARP entry, also determine, by each of the at least two convergence nodes (61), whether a destination address in the newly added ARP entry and whether an interface address of three layers of each of the at least two convergence nodes (61) are in the same network segment (405); if it is determined that they are on the same network segment, automatically add, by each of the at least two convergence nodes (61) according to the newly added ARP entry, the static route entry corresponding to the destination address of the node of access (62, 406).
    [0004]
    4. Method according to claim 1, CHARACTERIZED by the fact that the automatic update of a discovered static route entry corresponding to a destination address of an access node (62) by each of the at least two convergence nodes (61) in real time, according to an ARP entry discovered about each access node (62) is as follows: detect, by the ARP module of each of the at least two convergence nodes (61), whether an ARP entry is excluded (504); when an ARP entry is deleted, also determine, by each of the at least two convergence nodes (61), whether a destination address in the ARP entry is suppressed and a three-layer interface address from each of the at least two convergence nodes. convergence (61) are on the same network segment (505), if it is determined that they are on the same network segment, automatically delete, by each of the at least two convergence nodes (61) according to the deleted ARP entry, the static route entry corresponding to the destination address of the access node (62, 506).
    [0005]
    5. System to perform accessibility of a destination route in an access ring of a packet transport network, PTN, CHARACTERIZED by comprising: at least two convergence nodes (61) and at least two access nodes (62), wherein a two-layer ring network is formed by interconnecting between at least two access nodes (62) in a two-layer access ring and a synchronization wire between at least two convergence nodes (61); where each access node (62) in the two-layer access ring is configured with a destination address on the same network segment with a three-layer interface address of a node connected to a three-layer route ring, which comprises at least two convergence nodes (61), a central node (63) and other networks (64); a Spanning Tree Protocol, STP, is configured on at least two access nodes (62) of the two-layer access ring, and STP transparent transmission is configured on at least two convergence nodes (61) of the access ring. two-tier access; Dual gateway default routes are configured on at least two access nodes (62) of the two-tier access ring, so that information can be posted on at least two convergence nodes (61) and then posted on one. central node (63) and in the other networks (64) through at least two convergence nodes (61); three-layer interface interconnection and a three-layer route protocol are configured on the route's three-layer ring nodes; and direct routes and static routes are reconfigured in at least two convergence nodes (61) connected to the two-layer access ring in a dynamic route protocol, wherein each of the at least two convergence nodes (61) is configured to: adjust a link function between an Address Resolution Protocol Module, ARP, and a static route module on a three-layer interface of each of the at least two convergence nodes (61); automatically update an entry of the discovered static route corresponding to the destination address of an access node (62) in real time, according to an ARP entry discovered about each access node (62), and reporting, according to a dynamic route protocol, a entry of the current discovered static route corresponding to the destination address from the access node (62) to the central node (63) and the other networks (64), where each of the at least two convergence nodes (61) is configured to adjust the function of the link between the ARP module and the static route module at the three-layer interface of each of the at least two convergence nodes (61), and automatically update the discovered static route entry corresponding to the destination address of an access node (62) in real time, according to an ARP entry discovered on each access node (62), by: detecting, by the ARP module of each of the at least two convergence nodes (61), if a three-layer interface on an ARP entry about an access node (62) is on the same network segment with the three-layer interface of each of the at least two convergence nodes (61), and in response to detection that the two three-layer interfaces are in a same network segment, find the ARP entry; after finding the ARP entry about the access node (62), automatically send, by the ARP module, a message related to the ARP entry about the access node (62) to the static route module, in which the access node (62 ) are on the same network segment with the three-layer interface of each of the at least two convergence nodes; and sending, by the static route module, the static route entry corresponding to the destination address of the access node (62) according to the ARP entry in the message after receiving the message.
    [0006]
    6. System according to claim 5, CHARACTERIZED by further comprising the central node (63) and the other networks (64), wherein the central node (63) is configured to receive the input of the current discovered static route corresponding to the destination address of the access node (62) reported by each of the at least two convergence nodes (61) according to the dynamic route protocol, and the other networks (64) are configured to receive static route discovery input current corresponding to the destination address of the access node (62) reported by each of the at least two convergence nodes (61) according to the dynamic route protocol.
    [0007]
    System according to claim 6, CHARACTERIZED in that the central node (63) comprises at least one central node (63).
    [0008]
    8. System according to claim 7, CHARACTERIZED by the fact that each of the at least two convergence nodes (61) is additionally configured to update a corresponding dynamic route entry in a dynamic route table after the central node ( 63) and the other networks (64) receive the report; the central node (63) is also configured to update a corresponding dynamic route entry in a dynamic route table, after the other networks (64) and the central network by themselves receive the report, and the other networks (64) are also configured to update the corresponding dynamic route entries in dynamic route tables, after the central node (63) and the other networks (64) themselves receive the report.
    [0009]
    9. System, according to any one of claims 5 to 8, CHARACTERIZED by the fact that each of the at least two convergence nodes (61) is also configured to: after the ARP module of each of the at least two nodes of convergence (61) detect that a new ARP entry is added or that an ARP entry is suppressed and an ARP entry is detected to be added or suppressed, determine whether a destination address in the suppressed or added ARP entry and an interface address of three layers of each of the at least two convergence nodes (61) are on the same network segment, automatically adding or suppressing the static route entry corresponding to the destination address of the access node (62).
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    CN101771618B|2014-04-09|
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    EP2533475A1|2012-12-12|
    WO2011110029A1|2011-09-15|
    EP2533475B1|2018-01-03|
    RU2012137184A|2014-04-20|
    BR112012022549A2|2018-08-14|
    CN101771618A|2010-07-07|
    RU2526749C2|2014-08-27|
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    法律状态:
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-01-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-03-03| B15K| Others concerning applications: alteration of classification|Free format text: A CLASSIFICACAO ANTERIOR ERA: H04L 12/00 Ipc: H04L 12/437 (2006.01), H04L 12/46 (2006.01), H04L |
    2021-05-04| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-01| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 12/11/2010, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201010122773.9|2010-03-11|
    CN201010122773.9A|CN101771618B|2010-03-11|2010-03-11|Host routing reachable method and system in access ring of packet transport network|
    PCT/CN2010/078661|WO2011110029A1|2010-03-11|2010-11-12|Method and system for host route reachability in packet transport network access ring|
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