CN102377605B - Method for implementing double-returning protection of packet transport network (PTN) equipment by using combination of multiple protection modes - Google Patents
Method for implementing double-returning protection of packet transport network (PTN) equipment by using combination of multiple protection modes Download PDFInfo
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Abstract
The invention relates to a method for implementing double-returning protection of packet transport network (PTN) equipment by using a combination of multiple protection modes. A main line and a spare line of radio network controller (RNC) equipment are respectively connected with two different PTN nodes in a PTN network to form a main path and a spare path; protection of services is realized by LSP1+1/1:1 in the PTN network, and protection of services is realized by a link 1+1/1:1 consisting of the two PTN nodes and the RNC equipment between the PTN network and the RNC equipment; and when the connection in the PTN network and the connection between the PTN network and the RNC equipment fail at the same time, protection of the services is realized by combining the LSP1+1/1:1 protection and the link 1+1/1:1 protection. By the method, full-path protection of the services of the RNC equipment borne by the PTN network is realized, the defects when the PTN network protects the services of the RNC equipment are overcome by connecting the two PTN nodes and the RNC equipment and combining multiple protection modes, and the security of the services of the RNC equipment is well ensured.
Description
Technical field
The present invention relates to the APS(Automatic Protection Switching of PTN network, APS) resist technology field is that a kind of kinds of protect mode of utilizing combines the method that realizes PTN equipment dual-homing protection specifically.
Background technology
PTN(Packet Transport Network, Packet Transport Network) equipment is that to utilize the standardized Packet Transport Network technology T_MPLS(of International Telecommunications Union (ITU-T) be a subset of multiprotocol label switching MPLS, removed without connecting IP-based forwarding, increase OAM(Operation Administration Maintenance) end to end, OAM is the management work to network: operation Operation, manage Administration, safeguard the abbreviation of Maintenance) or a kind of Packet Transport Network equipment of realizing of PTN technology.
The transmission network of PTN equipment composition is (referred to as PTN network, each PTN equipment that forms PTN network is called PTN node), solve traditional SDH(Synchronous Digital Hierarchy, SDH (Synchronous Digital Hierarchy)) in the shortcoming that exposes inefficiency take packet switching in main network environment.PTN equipment has connection-oriented data retransmission mechanism, multiple service supporting, stronger extension of network, abundant OAM(according to the actual needs of carrier network operation; conventionally the management work of network is divided into 3 large classes: operate (Operation), management (Administration), safeguard (Maintenance); be called for short OAM), strict QoS(Quality of Service, service quality) technical characterictic such as network protection of mechanism and 50ms.
The above feature of PTN network, has well met 3G(3G (Third Generation) Moblie technology) requirement of network, become the main transmission bearer network of 3G network.
RNC(Radio Network Controller, radio network controller) equipment is a key network element of 3G network, is connected with PTN equipment (being PTN node).
In the protected mode of business, ITU-T defined looped network protection standard G.8132 with linear protection standard G.8131.
The various protected modes of the PTN network developing on the basis of these two kinds of protective standards have well solved the protection problem of PTN network internal business.But being connected between PTN network and RNC equipment is a weak link.Because RNC equipment is not supported the protection of above two standards, can only support the link 1+1/1:1 protection that does not simply need complicated OAM expense to support.
As shown in Figure 1; rectangle icon representation PTN equipment in figure (is PTN node; A～G totally seven PTN nodes in figure); oval icon representation RNC equipment; in figure, dashed bars represents respectively the backup path of PTN network LSP1+1/1:1 protection; the backup path of link 1+1/1:1 protection between PTN node D and RNC equipment, the solid line bar corresponding with dashed bars represents the primary path of business.Conventional link 1+1/1:1 protection is point-to-point protection, and the standby usage circuit of RNC equipment is all connected with same PTN node, and RNC equipment and this PTN node coordinate realizes by link 1+1 protection the protection being connected between RNC equipment and PTN network.PTN network internal realizes the protection to PTN network internal vocational work path by label switching path LSP 1+1/1:1 protection.This mode is two kinds of protections by the division of labor a part of path of each protection, is a kind of simple combination, separate, and its maximum defect is exactly that business can be interrupted when with the PTN node power-off of RNC equipment connection.Hence one can see that, utilizes the basic protected mode of existing PTN network also to have the problem that cannot well protect the RNC appliance services of carrying on PTN network, and particularly, when the PTN node failure of PTN network and RNC equipment connection, RNC appliance services can be interrupted.
Summary of the invention
For the defect existing in prior art; the object of the present invention is to provide a kind of kinds of protect mode of utilizing to combine the method that realizes PTN equipment dual-homing protection; realized the RNC appliance services complete trails protection to the PTN network carrying; utilize two PTN nodes to be connected with RNC equipment; the defect that has solved the existence of PTN network protection RNC appliance services by the mode that kinds of protect mode combines, has well ensured the fail safe of RNC appliance services.
For reaching above object, the technical scheme that the present invention takes is:
Utilize kinds of protect mode to combine a method that realizes PTN equipment dual-homing protection, it is characterized in that:
The primary circuit of RNC equipment and extension wire respectively the PTN node different from PTN network two are connected, and are called main road PTN node with the PTN node of primary connection, and the PTN node being connected with extension wire is called standby road PTN node,
Main road PTN node He Bei road PTN node is all by forming primary path and backup path between PTN network and the target P TN node of PTN business,
In PTN network internal, by LSP1+1/1:1, protect the protection of the business of realization,
Between PTN network and RNC equipment, by the link 1+1/1:1 protection of main road PTN node, standby road PTN node and RNC equipment composition, realize the protection to business,
When connection simultaneous faults between PTN network internal and PTN network and RNC equipment, LSP1+1/1:1 protection and two kinds of protections of the link 1+1/1:1 protection protection of realization to business of joining together.
On the basis of technique scheme, target P TN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 protection that the LSP1+1/1:1 of target P TN node is standard, all the time in state of activation;
Main road PTN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 protection that the LSP1+1/1:1 of main road PTN node is standard, can between the state activating and do not activate, switch according to online failure condition:
In trouble-free situation, the LSP1+1/1:1 of main road PTN node protects in state of activation, the complete LSP1+1/1:1 protection example of LSP1+1/1:1 protection composition configuring with target P TN node; When there is some fault scenes on network, the LSP1+1/1:1 protection of main road PTN node can be switched to not state of activation;
Standby road PTN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 protection that the LSP1+1/1:1 of standby road PTN node is standard, can between the state activating and do not activate, switch according to online failure condition:
In trouble-free situation, the LSP1+1/1:1 protection of standby road PTN node is in state of activation not; When there is some fault scenes on network, the LSP1+1/1:1 protection of main road PTN node can be switched to not state of activation, the simultaneously LSP1+1/1:1 protection of standby road PTN node can be switched to state of activation, the complete LSP1+1/1:1 protection of LSP1+1/1:1 protection composition configuring with target P TN node;
The link 1+1/1:1 protection of RNC device configuration standard,
Main road PTN node He Bei road PTN node configuration link 1+1/1:1 protection, the link 1+1/1:1 protection of composition PTN network internal, with the complete link 1+1/1:1 protection example of one of the link 1+1/1:1 protection composition of RNC equipment configuration.
On the basis of technique scheme, RNC equipment primary path is connected with main road PTN node, and Yu Bei road, RNC equipment sparing path PTN node is connected,
Main road PTN node He Bei road PTN node utilizes the connection between two nodes in PTN network to transmit separately and the make-and-break status information in path between RNC equipment; and utilize the part of the connection of two nodes of standby usage in PTN network as link 1+1/1:1 protection backup path, when link 1+1/1:1 protection is switched, coordinate together the switching that realizes business standby usage path.
On the basis of technique scheme; the node of realizing LSP1+1/1:1 protection is dynamic change; when the business of RNC equipment is during from main road PTN node to RNC equipment; that target P TN node and the combination of main road PTN node realize LSP1+1/1:1 protection; when the business Shi Congbei road of RNC equipment PTN node is during to RNC equipment, be that the PTN node combination of target P TN node He Bei road realizes LSP1+1/1:1 protection.
On the basis of technique scheme, when breaking down scene on network, by following protection strategy, protect:
When PTN network internal breaks down, if fault occurs on the primary path of LSP1+1/1:1 protection, only trigger LSP1+1/1:1 protection, and not trigger link 1+1/1:1 protection;
When the primary path goes wrong of the link 1+1/1:1 protection configuring between PTN network and RNC equipment, a trigger link 1+1/1:1 protection, and do not trigger LSP1+1/1:1 protection;
When the primary path of LSP1+1/1:1 protection and the primary path of link 1+1/1:1 protection break down simultaneously, trigger LSP1+1/1:1 protection and link 1+1/1:1 simultaneously and protect;
When main road PTN node failure, trigger LSP1+1/1:1 protection and link 1+1/1:1 protection simultaneously.
The kinds of protect mode of utilizing of the present invention combines the method that realizes PTN equipment dual-homing protection; realized the RNC appliance services complete trails protection to the PTN network carrying; utilize two PTN nodes to be connected with RNC equipment; the defect that has solved the existence of PTN network protection RNC appliance services by the mode that kinds of protect mode combines, has well ensured the fail safe of RNC appliance services.
Accompanying drawing explanation
The present invention has following accompanying drawing:
Fig. 1 is used the network topological diagram of basic label switching path LSP 1+1/1:1 protection and link 1+1,1:1 protection;
Fig. 2 network topological diagram of the present invention;
After Fig. 3 PTN network internal LSP1+1/1:1 primary path fault, service path moves towards figure;
Between Fig. 4 PTN network and RNC equipment, after link 1+1/1:1 protection primary path fault, service path moves towards figure;
Between Fig. 5 PTN network internal LSP1+1/1:1 primary path primary path and PTN network and RNC equipment, after link 1+1/1:1 protection primary path simultaneous faults, service path moves towards figure;
After Fig. 6 main road PTN node failure, service path moves towards figure.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The kinds of protect mode of utilizing of the present invention combines the method that realizes PTN equipment dual-homing protection; the network topology structure adopting as shown in Figure 2; in figure dashed bars represent to break down after several operating paths of business; the operating path of business when the solid line bar corresponding with dashed bars represents fault-free; in embodiment illustrated in fig. 2; PTN network has seven PTN node A～G, and concrete technical scheme of the present invention is as follows:
The primary circuit of RNC equipment and extension wire respectively the PTN node different from PTN network two are connected, be called main road PTN node (main road PTN node had both referred to PTN node D in Fig. 2) with the PTN node of primary connection, the PTN node being connected with extension wire is called standby road PTN node (standby road PTN node had both referred to PTN node E in Fig. 2)
Main road PTN node He Bei road PTN node all forms primary path and backup path between the target P TN node (target P TN node had both referred to PTN node A in Fig. 2, also can be described as under business and talked about node) by PTN network and business,
In PTN network internal, by LSP1+1/1:1, protect the protection of the business of realization,
Between PTN network and RNC equipment, by the link 1+1/1:1 protection of main road PTN node, standby road PTN node and RNC equipment composition, realize the protection to business,
When connection simultaneous faults between PTN network internal and PTN network and RNC equipment, LSP1+1/1:1 protection and two kinds of protections of the link 1+1/1:1 protection protection of realization to business of joining together.
In the present invention; PTN network and the standby usage of RNC equipment are connected to two different PTN nodes; article one, business is protected by two kinds of protections simultaneously; realized the complete trails protection through different network type appliance services; protection to business while supporting many places fault, the protection to business while supporting the power-off of PTN network main road PTN node.
Figure 2 shows that embodiment, in this embodiment, the RNC appliance services concrete configuration of the PTN network carrying is as follows:
1) vocational work path is A-B-C-D-RNC, the operating path of business when this is fault-free; PTN node A is called target P TN node, and PTN node D is called main road PTN node, is called standby road PTN node with the PTN node E of RNC equipment connection,
2) target P TN node (PTN node A) configuration LSP1+1/1:1 protection, primary path is A-B-C-D, backup path is A-G-F-E-D; The LSP1+1/1:1 of target P TN node is the LSP1+1/1:1 protection of standard, all the time in state of activation;
3) main road PTN node (PTN node D) configuration LSP1+1/1:1 protection, the primary path of protection is A-B-C-D, backup path is A-G-F-E-D; The LSP1+1/1:1 protection that the LSP1+1/1:1 of main road PTN node is standard, can between the state activating and do not activate, switch according to online failure condition:
In trouble-free situation, the LSP1+1/1:1 of main road PTN node protects in state of activation, the complete LSP1+1/1:1 protection example of LSP1+1/1:1 protection composition configuring with target P TN node; When there is some fault scenes on network (fault scenes and corresponding protection strategy refer to following), the LSP1+1/1:1 protection of main road PTN node can be switched to not state of activation;
4) standby road PTN node (PTN node E) configuration LSP1+1/1:1 protection, the primary path of protection is A-B-C-D-E, backup path is A-G-F-C-D-E; The LSP1+1/1:1 protection that the LSP1+1/1:1 of standby road PTN node is standard, can between the state activating and do not activate, switch according to online failure condition:
In trouble-free situation, the LSP1+1/1:1 protection of standby road PTN node is in state of activation not; When there is some fault scenes on network (fault scenes and corresponding protection strategy refer to following), the LSP1+1/1:1 protection of main road PTN node can be switched to not state of activation, the simultaneously LSP1+1/1:1 protection of standby road PTN node can be switched to state of activation, the complete LSP1+1/1:1 protection of LSP1+1/1:1 protection composition configuring with target P TN node;
5) the link 1+1/1:1 of RNC device configuration standard protection, primary path is for arriving RNC-D direction, and backup path is RNC-E direction;
6) main road PTN node He Bei road PTN node configuration link 1+1/1:1 protection; the link 1+1/1:1 protection of composition PTN network internal; primary path is D-RNC, and backup path is D-E-RNC, with the complete link 1+1/1:1 protection example of one of the link 1+1/1:1 protection composition of RNC equipment configuration.
The link 1+1/1:1 protection of main road PTN node He Bei road PTN node configuration with the difference of the link 1+1/1:1 protection of standard is: this protection is not to be completed by a node; but by two PTN nodes, complemented each other to form the link 1+1/1:1 protection configuration of PTN network internal, form a complete link 1+1/1:1 protection example with RNC equipment interconnection.
More than the LSP1+1/1:1 of configuration protection and link 1+1/1:1 protection group are combined on the RNC appliance services operating path that just can realize the carrying of PTN equipment and occur that any fault can ensure the safety of business.
In the present invention, link 1+1/1:1 protection utilizes 3 nodes to realize, and described 3 nodes are: main road PTN node He Bei road PTN node, and RNC equipment.
RNC equipment primary path is connected with main road PTN node (PTN node D), and Yu Bei road, RNC equipment sparing path PTN node (PTN node E) is connected.Main road PTN node He Bei road PTN node utilizes the connection between two nodes in PTN network to transmit separately and the make-and-break status information being connected between RNC equipment; and utilize the part of the connection of main road PTN node He Bei road PTN node in PTN network as link 1+1/1:1 protection backup path, when link 1+1/1:1 protection is switched, coordinate together the switching that realizes business standby usage path.
In the present invention, LSP1+1/1:1 protection realizes at 3 nodes, and described 3 nodes are: target P TN node (PTN node A), main road PTN node (PTN node D) He Bei road PTN node (PTN node E).
The node of realizing LSP1+1/1:1 protection is dynamic change; when the business of RNC equipment is during from main road PTN node to RNC equipment; that target P TN node and the combination of main road PTN node realize LSP1+1/1:1 protection; when the business Shi Congbei road of RNC equipment PTN node is during to RNC equipment, be that the PTN node combination of target P TN node He Bei road realizes LSP1+1/1:1 protection.
Protection to business when the present invention has realized the power-off of main road PTN node.In the present invention, LSP1+1/1:1 protection and link 1+1/1:1 protection mutually combine, and acting in conjunction realizes the protection to business, has the coordination system of original creation between two kinds of protections:
1:LSP1+1/1:1 protection is not to be configured in two PTN nodes, but is configured in 3 PTN nodes, and the node of configuration LSP1+1/1:1 protection is target P TN node and two nodes (main road PTN node He Bei road PTN node) with RNC equipment connection.Under different fault scenes, the composition LSP1+1/1:1 protection in target P TN node and two and RNC equipment connection node.
2: link 1+1/1:1 protection configures between PTN network and RNC equipment; PTN network is not a node configuration link 1+1/1:1; but two all configuration link 1+1/:1 protections of the node being connected with RNC; two nodes cooperatively interact, and common realization with the link 1+1/1:1 of RNC equipment interconnection protected.
3:RNC equipment configures basic link 1+1/1:1 protection, and the configuration when being connected with a PTN node of its collocation method and Switchover mechanism is identical.
4: when PTN network internal breaks down, if fault occurs on the primary path of LSP1+1/1:1 protection, only trigger LSP1+1/1:1 protection, and do not trigger the link 1+1/1:1 protection between PTN network and RNC equipment.
5: when the primary path goes wrong of the link 1+1/1:1 protection configuring between PTN network and RNC equipment, a trigger link 1+1/1:1 protection, and do not trigger LSP1+1/1:1 protection.
6: when the primary path of LSP1+1/1:1 protection and the primary path of link 1+1/1:1 protection break down simultaneously, trigger LSP1+1/1:1 protection and link 1+1/1:1 simultaneously and protect.
7: when main road PTN node failure, trigger LSP1+1/1:1 protection and link 1+1/1:1 protection simultaneously.
What the present invention adopted is on the basic basis that protected mode LSP1+1/1:1 protects and link 1+1/1:1 protects of PTN equipment; carrying out multiple nodes cooperatively interacts and two kinds of modes that protected mode cooperatively interacts; realized the complete trails protection of the RNC appliance services to the PTN network carrying, accomplished to occur that any fault can realize the protection to business on business primary path.And this protected mode without specific (special) requirements, only need to configure basic link 1+1/1:1 protection to RNC equipment, the engineering that does not also affect this guard method in the situation that PTN network and RNC equipment are devices from different manufacturers intercommunication is applied.
Below in conjunction with Fig. 3～6, describe the present invention in detail and occur the concrete treatment mechanism under various failure conditions at network:
1) treatment mechanism when PTN network internal breaks down on vocational work path
As shown in Figure 3; when the connection between B-C node on the operating path of business is broken down; when namely LSP1+1/1:1 protection primary path breaks down; the LSP1+1/1:1 of A node and D node protects in state of activation; this fault triggers the LSP1+1/1:1 protection of A node and D node and switches; the trend of business is switched to the backup path A-G-F-E-D of LSP1+1/1:1 protection in PTN network, and the complete operating path of business becomes the A-G-F-E-D-RNC as shown in figure dashed bars.Connection on the operating path of business between B-C node is broken down, and only triggers LSP1+1/1:1 protection, can trigger link 1+1/1:1 protection.
2) treatment mechanism that on vocational work path, the connection between PTN equipment and RNC equipment is broken down
As shown in Figure 4, the connection on vocational work path between PTN network and RNC equipment is broken down, and when the primary path of namely link 1+1/1:1 protection breaks down, triggers the link 1+1/1:1 protection between PTN network and RNC equipment:
(1) RNC equipment Inspection is switched after link 1+1/1:1 protection primary path goes wrong, switches the business to link 1+1/1:1 protection backup path RNC-E direction;
(2) D node detects that link 1+1/1:1 protection occurring after link 1+1/1:1 primary path fault switches, and business is mail to D-E direction, and the connection by D-E is by D-RNC path failure information notice E node simultaneously;
(3) E node receives and link 1+1/1:1 protection also occurs after D-RNC path failure information and switch, and the business receiving from D node is mail to E-RNC direction.
All there is link 1+1/1:1 protection in three nodes switch after, business is switched to backup path D-E-RNC from the primary path D-RNC of link 1+1/1:1 protection, the operating path of business becomes and is depicted as A-B-C-D-E – RNC as Fig. 4 dashed bars.Connection between D-RNC equipment the trigger link 1+1/1:1 protection of breaking down, does not trigger LSP1+1/1:1 protection.
Occur after link 1+1/1:1 protection, D node has become business pass-thru node at PTN network internal words node from business, and E node becomes the lower words node of business.When link 1+1/1:1 protection is switched, D node LSP1+1/1:1 protection can be switched to not state of activation, and E node LSP1+1/1:1 protection can be switched to state of activation.Complete LSP1+1/1:1 protection of LSP1+1/1:1 protection composition of A node and the configuration of E node.
3) on vocational work path, PTN network internal breaks down, the treatment mechanism when connection between PTN network and RNC equipment is also broken down
The PTN network internal on operating path of being engaged in as shown in Figure 5 breaks down, and the connection between PTN network and RNC equipment is also broken down, and the sequencing occurring according to fault has two kinds of handling processes:
The fault of A, PTN network internal first occurs, and after the connection fault between PTN network and RNC equipment, occurs
(1) PTN network internal break down after with failure condition 1) described in, trigger LSP1+1/1:1 protection and switch, the operating path of business becomes A-G-F-E-D as shown in Fig. 3 dashed bars;
(2) after the connection between PTN network and RNC equipment is also broken down, D node is switched to not state of activation by LSP1+1/1:1, the connection fault message of D-RNC is sent to E node simultaneously;
(3) E node receives after the connection fault message of D-RNC; trigger link 1+1/1:1 protection is switched; business is switched to the standby direction E-RNC of link 1+1/1:1 protection; E node activates LSP1+1/1:1 protection simultaneously; E node is switched after LSP1+1/1:1 protection primary path fault being detected; LSP1+1/1:1 protection is switched to backup path A-G-F-E by business, and whole reversed process completes, the work of business path become A-G-F-E-RNC as shown in Fig. 5 dashed bars.
Connection fault between B, PTN network and RNC equipment first occurs, and after PTN network internal fault, occurs
(1) after the connection fault between PTN network and RNC equipment with failure condition 2) described in; trigger link 1+1/1:1 protection; the operating path of business becomes A-B-C-D-E-RNC as shown in Fig. 4 dashed bars; D node LSP1+1/1:1 protection is simultaneously switched to not state of activation, and E node LSP1+1/1:1 protection is switched to state of activation.
(2) after PTN network internal breaks down again, trigger the LSP1+1/1:1 protection of A node and E node and switch, LSP1+1/1:1 protection is switched to backup path A-G-F-E, and the operating path of business becomes the A-G-F-E-RNC. as shown in Fig. 5 dashed bars
In sum; on vocational work path, PTN network internal breaks down; when the connection between PTN network and RNC equipment is also broken down; both having triggered the LSP1+1/1:1 protection of PTN network internal switches; also the link 1+1/1:1 protection triggering between PTN network and RNC equipment is switched; two kinds of protections cooperatively interact, and have jointly realized the protection to business.
4) treatment mechanism during main road PTN node failure
As shown in Figure 6, during D node on vocational work path (main road PTN node) fault, both triggered LSP1+1/1:1 protection, also trigger link 1+1/1:1 protection, its concrete handling process is as follows:
(1) E node detects after D node failure, activates LSP1+1/1:1 protection, because D node failure causes E node LSP1+1/1:1 protection primary path fault, triggers E node LSP1+1/1:1 protection and switches;
(2) D node failure, triggers A node LSP1+1/1:1 protection and switches, and LSP1+1/1:1 protection is switched to backup path A-G-F-E;
(3) D node failure, causes D-RNC to connect fault, triggers the link 1+1/1:1 protection of RNC equipment and switches, and switches the business to link 1+1/1:1 protection backup path RNC-E direction;
(4) D node failure, triggers the link 1+1/1:1 protection of E node and switches, and switches the business to link 1+1/1:1 protection backup path RNC-E.The operating path of business becomes the A-G-F-E-RNC as shown in Fig. 6 dashed bars.
In sum, during main road PTN node failure, trigger LSP1+1/1:1 protection simultaneously and switch the protection with link 1+1/1:1 and switch, two kinds of protections cooperatively interact, and have jointly realized the protection to business.
The content not being described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (4)
1. utilize kinds of protect mode to combine a method that realizes PTN equipment dual-homing protection, it is characterized in that:
The primary circuit of RNC equipment and extension wire respectively the PTN node different from PTN network two are connected, and are called main road PTN node with the PTN node of primary connection, and the PTN node being connected with extension wire is called standby road PTN node,
Main road PTN node He Bei road PTN node is all by forming primary path and backup path between PTN network and the target P TN node of PTN business,
In PTN network internal, by LSP1+1/1:1, protect the protection of the business of realization,
Between PTN network and RNC equipment, by the link 1+1/1:1 protection of main road PTN node, standby road PTN node and RNC equipment composition, realize the protection to business,
When connection simultaneous faults between PTN network internal and PTN network and RNC equipment, LSP1+1/1:1 protection and two kinds of protections of the link 1+1/1:1 protection protection of realization to business of joining together;
Target P TN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 protection that the LSP1+1/1:1 of target P TN node is standard, all the time in state of activation;
Main road PTN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 protection that the LSP1+1/1:1 of main road PTN node is standard, can between the state activating and do not activate, switch according to online failure condition:
In trouble-free situation, the LSP1+1/1:1 of main road PTN node protects in state of activation, the complete LSP1+1/1:1 protection example of LSP1+1/1:1 protection composition configuring with target P TN node; When there is some fault scenes on network, the LSP1+1/1:1 protection of main road PTN node can be switched to not state of activation;
Standby road PTN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 protection that the LSP1+1/1:1 of standby road PTN node is standard, can between the state activating and do not activate, switch according to online failure condition:
In trouble-free situation, the LSP1+1/1:1 protection of standby road PTN node is in state of activation not; When there is some fault scenes on network, the LSP1+1/1:1 protection of main road PTN node can be switched to not state of activation, the simultaneously LSP1+1/1:1 protection of standby road PTN node can be switched to state of activation, the complete LSP1+1/1:1 protection of LSP1+1/1:1 protection composition configuring with target P TN node;
The link 1+1/1:1 protection of RNC device configuration standard,
Main road PTN node He Bei road PTN node configuration link 1+1/1:1 protection, the link 1+1/1:1 protection of composition PTN network internal, with the complete link 1+1/1:1 protection example of one of the link 1+1/1:1 protection composition of RNC equipment configuration.
2. the kinds of protect mode of utilizing as claimed in claim 1 combines the method that realizes PTN equipment dual-homing protection, it is characterized in that: RNC equipment primary path is connected with main road PTN node, and Yu Bei road, RNC equipment sparing path PTN node is connected,
Main road PTN node He Bei road PTN node utilizes the connection between two nodes in PTN network to transmit separately and the make-and-break status information in path between RNC equipment; and utilize the part of the connection of two nodes of standby usage in PTN network as link 1+1/1:1 protection backup path, when link 1+1/1:1 protection is switched, coordinate together the switching that realizes business standby usage path.
3. the kinds of protect mode of utilizing as claimed in claim 1 combines the method that realizes PTN equipment dual-homing protection; it is characterized in that: the node of realizing LSP1+1/1:1 protection is dynamic change; when the business of RNC equipment is during from main road PTN node to RNC equipment; that target P TN node and the combination of main road PTN node realize LSP1+1/1:1 protection; when the business Shi Congbei road of RNC equipment PTN node is during to RNC equipment, be that the PTN node combination of target P TN node He Bei road realizes LSP1+1/1:1 protection.
4. the kinds of protect mode of utilizing as claimed in claim 1 combines the method that realizes PTN equipment dual-homing protection, it is characterized in that, when breaking down scene on network, by following protection strategy, protects:
When PTN network internal breaks down, if fault occurs on the primary path of LSP1+1/1:1 protection, only trigger LSP1+1/1:1 protection, and not trigger link 1+1/1:1 protection;
When the primary path goes wrong of the link 1+1/1:1 protection configuring between PTN network and RNC equipment, a trigger link 1+1/1:1 protection, and do not trigger LSP1+1/1:1 protection;
When the primary path of LSP1+1/1:1 protection and the primary path of link 1+1/1:1 protection break down simultaneously, trigger LSP1+1/1:1 protection and link 1+1/1:1 simultaneously and protect;
When main road PTN node failure, trigger LSP1+1/1:1 protection and link 1+1/1:1 protection simultaneously.
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| CN102916842A (en) * | 2012-11-06 | 2013-02-06 | 烽火通信科技股份有限公司 | Method for implementing PTN (Packet Transport Network) equipment double-returning protection by overlaying various protection modes |
| CN102916843B (en) * | 2012-11-19 | 2015-09-30 | 烽火通信科技股份有限公司 | PTN network is utilized to carry the link protection implementation method of point-to-point private line service |
| CN105281927A (en) * | 2014-05-28 | 2016-01-27 | 中兴通讯股份有限公司 | Method and device for multilink protection switching |
| CN104660451B (en) * | 2015-02-28 | 2018-02-06 | 山东华辰泰尔信息科技股份有限公司 | A kind of across disk guard method based on PTN tunnels |
| CN106452813B (en) * | 2015-08-10 | 2020-05-29 | 中兴通讯股份有限公司 | Method, device and system for packet transport network hybrid configuration dual-homing protection switching |
| CN108023754A (en) * | 2016-10-31 | 2018-05-11 | 中国移动通信集团广东有限公司 | A kind of implementation method and device of dual homed group main-standby nodes negotiation mechanism |
| CN107592259B (en) * | 2017-09-21 | 2019-12-03 | 烽火通信科技股份有限公司 | Flow switching method in a kind of VRRP protection scene |
| CN108234200B (en) * | 2017-12-21 | 2019-08-27 | 中国联合网络通信集团有限公司 | Communication processing method and device based on access ring |
| CN110391841A (en) * | 2018-04-16 | 2019-10-29 | 中兴通讯股份有限公司 | A kind of dual-homing protection method, apparatus and dual-homing protection network |
| CN108984397B (en) * | 2018-06-26 | 2021-02-23 | 南京大学 | Black box fault injection method and system and medium equipment |
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