CN102377605A - 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 APS (Automatic Protection Switching, APS) the resist technology field of PTN network, is that a kind of kinds of protect mode of utilizing makes up 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 the sub-set of multiprotocol label switching MPLS; Removed and do not had the IP-based forwarding of connection; Increase OAM(Operation Administration Maintenance) end to end, OAM is to Network Management work: 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 that PTN equipment is formed (abbreviates the PTN network as; Each PTN equipment that constitutes the PTN network is called the PTN node); Solve traditional SDH (Synchronous Digital Hierarchy, SDH) exposes inefficiency in the network environment that with the packet switching is the master shortcoming.PTN equipment has connection-oriented data forwarding mechanism, multiple service supporting, stronger extension of network property, abundant OAM (according to the actual needs of carrier network operation; Usually Network Management work is divided into 3 big types: operate (Operation), management (Administration), safeguard (Maintenance); Abbreviation OAM), QoS (Quality of Service, the service quality) mechanism of strictness and the technical characterictics such as network protection of 50ms.
The above characteristic of PTN network has well satisfied the requirement of 3G (3G (Third Generation) Moblie technology) network, has 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, links to each other with PTN equipment (being the PTN node).
On the protected mode of business, ITU-T defined the looped network protection standard G.8132 with the linear protection standard G.8131.
The various protected modes of the PTN network that on the basis of these two kinds of protective standards, develops have well solved the professional protection problem of PTN network internal.But being connected between PTN network and the 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 among the figure (is the PTN node; A～G totally seven PTN nodes among the figure), oval icon representation RNC equipment, dashed bars is represented the backup path of PTN network LSP1+1/1:1 protection respectively among the figure; The backup path of link 1+1/1:1 protection between PTN node D and the RNC equipment, the solid line bar corresponding with dashed bars represented professional primary path.Conventional link 1+1/1:1 protection is point-to-point protection, and promptly the active and standby of RNC equipment all links to each other with same PTN node with circuit, and RNC equipment and this PTN node cooperate the protection through being connected between link 1+1 protection realization RNC equipment and the PTN network.The PTN network internal realizes the protection to PTN network internal vocational work path through label switching path LSP 1+1/1:1 protection.This mode is that two kinds of protections are respectively protected a part of path through the division of labor, is a kind of simple combination, and is separate, and its maximum defective is exactly when the PTN node outage that is connected with RNC equipment, professional can the interruption.Hence one can see that, utilizes the basic protected mode of existing P TN network also to have the problem that can't well protect the RNC appliance services of carrying on the PTN network, and particularly when PTN network during with PTN node failure that RNC equipment is connected, the RNC appliance services can be interrupted.
Summary of the invention
To the defective that exists in the prior art; The object of the present invention is to provide a kind of kinds of protect mode of utilizing to make up the method that realizes PTN equipment dual-homing protection; Realized RNC appliance services complete trails protection to the PTN network carrying; Utilize two PTN nodes to link to each other with RNC equipment, the mode that combines with the kinds of protect mode has solved the defective that PTN network protection RNC appliance services exists, and has well ensured the fail safe of RNC appliance services.
For reaching above purpose, the technical scheme that the present invention takes is:
A kind of kinds of protect mode of utilizing makes up the method that realizes PTN equipment dual-homing protection, it is characterized in that:
RNC equipment main with circuit and extension wire respectively with the PTN network in two different PTN nodes link to each other, and lead the PTN node that is connected with circuit and be called main road PTN node, the PTN node that is connected with extension wire is called and is equipped with road PTN node,
Main road PTN node and be equipped with road PTN node all through formation primary path and backup path between the target P TN node of PTN network and PTN business,
In the PTN network internal, realize professional protection through the LSP1+1/1:1 protection,
Between PTN network and RNC equipment, through main road PTN node, be equipped with the link 1+1/1:1 protection that road PTN node and RNC equipment forms and realize protection to business,
When the connection simultaneous faults between PTN network internal and PTN network and the RNC equipment, then LSP1+1/1:1 protection and two kinds of protections of link 1+1/1:1 protection join together to realize the protection to business.
On the basis of technique scheme, target P TN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 of target P TN node is the LSP1+1/1:1 protection of standard, is in state of activation all the time;
Main road PTN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 of main road PTN node is the LSP1+1/1:1 protection of standard, can between the state that activates and do not activate, switch according to online failure condition:
Under trouble-free situation, the LSP1+1/1:1 of main road PTN node protection is in state of activation, forms a complete LSP1+1/1:1 protection instance with the LSP1+1/1:1 protection that target P TN node is disposed; When occurring some fault scenes on the network, the LSP1+1/1:1 protection of main road PTN node can switch to not state of activation;
Be equipped with road PTN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 that is equipped with road PTN node is the LSP1+1/1:1 protection of standard, can between the state that activates and do not activate, switch according to online failure condition:
Under trouble-free situation, the LSP1+1/1:1 protection that is equipped with road PTN node is in not state of activation; When occurring some fault scenes on the network; The LSP1+1/1:1 protection of main road PTN node can switch to not state of activation; The LSP1+1/1:1 protection that is equipped with road PTN node simultaneously can switch to state of activation, forms a complete LSP1+1/1:1 protection with the LSP1+1/1:1 protection that target P TN node is disposed;
The link 1+1/1:1 protection of RNC device configuration standard,
Main road PTN node and road PTN node configuration link 1+1/1:1 protection are fully formed the link 1+1/1:1 protection of PTN network internal, with complete link 1+1/1:1 protection instance of link 1+1/1:1 protection composition of RNC equipment disposition.
On the basis of technique scheme, RNC equipment primary path links to each other with main road PTN node, RNC equipment sparing path be equipped with road PTN node and link to each other,
Main road PTN node and be equipped with road PTN node and utilize in the PTN network connection between two nodes to transmit separately and the make-and-break status information in path between the RNC equipment; And utilize the part of two connections of node in the PTN network of active and standby usefulness, cooperate together when switching in link 1+1/1:1 protection and realize professional active and standby switching with the path as link 1+1/1:1 protection backup path.
On the basis of technique scheme; The node of realizing the LSP1+1/1:1 protection is dynamic change; When the business of RNC equipment is during from main road PTN node to RNC equipment; Being that the combination of target P TN node and main road PTN node realizes the LSP1+1/1:1 protection, when the business of RNC equipment is when being equipped with road PTN node to RNC equipment, is target P TN node and be equipped with road PTN node combination and realize the LSP1+1/1:1 protection.
On the basis of technique scheme, when breaking down scene on the network, protect by following protection strategy:
When the PTN network internal breaks down, if fault occurs on the primary path of LSP1+1/1:1 protection, only trigger the 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 that disposes between PTN network and RNC equipment protection, a trigger link 1+1/1:1 protection, and do not trigger the LSP1+1/1:1 protection;
When the primary path of the primary path of LSP1+1/1:1 protection and link 1+1/1:1 protection breaks 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 makes up the method that realizes PTN equipment dual-homing protection; Realized RNC appliance services complete trails protection to the PTN network carrying; Utilize two PTN nodes to link to each other with RNC equipment; The mode that combines with the kinds of protect mode has solved the defective that PTN network protection RNC appliance services exists, and has well ensured the fail safe of RNC appliance services.
Description of drawings
The present invention has following accompanying drawing:
The network topological diagram that Fig. 1 uses basic label switching path LSP 1+1/1:1 protection and link 1+1,1:1 to protect;
Fig. 2 network topological diagram of the present invention;
Service path moves towards figure after Fig. 3 PTN network internal LSP1+1/1:1 primary path fault;
Service path moved towards figure after link 1+1/1:1 protected the primary path fault between Fig. 4 PTN network and the RNC equipment;
Service path moved towards figure after link 1+1/1:1 protected the primary path simultaneous faults between Fig. 5 PTN network internal LSP1+1/1:1 primary path primary path and PTN network and the RNC equipment;
Service path moves towards figure behind Fig. 6 main road PTN node failure.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explain.
The kinds of protect mode of utilizing of the present invention makes up the method that realizes PTN equipment dual-homing protection; The network topology structure that adopts is as shown in Figure 2; The dashed bars several kinds of professional operating paths of back of representing to break down among the figure, the operating path of business when the solid line bar corresponding with dashed bars represented fault-free, embodiment illustrated in fig. 2 in; The PTN network has seven PTN node A～G, and concrete technical scheme of the present invention is following:
RNC equipment main with circuit and extension wire respectively with the PTN network in two different PTN nodes link to each other; Be called main road PTN node (main road PTN node both had been meant PTN node D in Fig. 2) with the main PTN node that is connected with circuit; The PTN node that is connected with extension wire is called road PTN node (be equipped with road PTN node and in Fig. 2, both be meant PTN node E) fully
Main road PTN node be equipped with road PTN node all through formation primary path and backup path between PTN network and the professional target P TN node (target P TN node both had been meant PTN node A in Fig. 2, also can be described as the professional node of words down),
In the PTN network internal, realize professional protection through the LSP1+1/1:1 protection,
Between PTN network and RNC equipment, through main road PTN node, be equipped with the link 1+1/1:1 protection that road PTN node and RNC equipment forms and realize protection to business,
When the connection simultaneous faults between PTN network internal and PTN network and the RNC equipment, then LSP1+1/1:1 protection and two kinds of protections of link 1+1/1:1 protection join together to realize the protection to business.
Among the present invention; The PTN network is connected two different PTN nodes with the active and standby usefulness of RNC equipment; Article one, business is protected by two kinds of protections simultaneously; Realized complete trails protection through the different network type appliance services, when supporting the many places fault to the protection of business, when supporting the outage of PTN network main road PTN node to the protection of business.
With shown in Figure 2 is embodiment, and among this embodiment, the RNC appliance services concrete configuration of the PTN network carrying is following:
1) the 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, and the PTN node E that is connected with RNC equipment is called road PTN node fully,
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, is in state of activation all the time;
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 of main road PTN node is the LSP1+1/1:1 protection of standard, can between the state that activates and do not activate, switch according to online failure condition:
Under trouble-free situation, the LSP1+1/1:1 of main road PTN node protection is in state of activation, forms a complete LSP1+1/1:1 protection instance with the LSP1+1/1:1 protection that target P TN node is disposed; When occurring some fault scenes on the network (fault scenes sees for details following with corresponding protection strategy), the LSP1+1/1:1 protection of main road PTN node can switch to not state of activation;
4) be equipped with road PTN node (PTN node E) configuration LSP1+1/1:1 protection, the primary path of protection is A-B-C-D-E, and backup path is A-G-F-C-D-E; The LSP1+1/1:1 that is equipped with road PTN node is the LSP1+1/1:1 protection of standard, can between the state that activates and do not activate, switch according to online failure condition:
Under trouble-free situation, the LSP1+1/1:1 protection that is equipped with road PTN node is in not state of activation; When occurring some fault scenes on the network (fault scenes sees for details following with corresponding protection strategy); The LSP1+1/1:1 protection of main road PTN node can switch to not state of activation; The LSP1+1/1:1 protection that is equipped with road PTN node simultaneously can switch to state of activation, forms a complete LSP1+1/1:1 protection with the LSP1+1/1:1 protection that target P TN node is disposed;
5) the link 1+1/1:1 of RNC device configuration standard protection, primary path is for arriving the RNC-D direction, and backup path is the RNC-E direction;
6) main road PTN node and road PTN node configuration link 1+1/1:1 protection fully; Form the link 1+1/1:1 protection of PTN network internal; Primary path is D-RNC, and backup path is D-E-RNC, forms a complete link 1+1/1:1 protection instance with the link 1+1/1:1 protection of RNC equipment disposition.
Main road PTN node with the difference of the link 1+1/1:1 protection of link 1+1/1:1 protection that is equipped with road PTN node configuration and standard is: this protection is not to be accomplished by a node; But complement each other to form the link 1+1/1:1 protection configuration of PTN network internal by two PTN nodes, form a complete link 1+1/1:1 protection instance with the RNC equipment interconnection.
More than the LSP1+1/1:1 protection of configuration with link 1+1/1:1 protection combine that any fault of appearance can ensure service security on the RNC appliance services operating path that just can realize the carrying of PTN equipment.
Among the present invention, link 1+1/1:1 protection utilizes 3 nodes to realize that said 3 nodes are: main road PTN node be equipped with road PTN node, and RNC equipment.
RNC equipment primary path links to each other with main road PTN node (PTN node D), RNC equipment sparing path be equipped with road PTN node (PTN node E) and link to each other.Main road PTN node and be equipped with road PTN node utilize in the PTN network connection between two nodes transmit separately with RNC equipment between the make-and-break status information that is connected; And utilize main road PTN node and be equipped with road PTN node and in the PTN network, be connected a part, cooperate together when switching in link 1+1/1:1 protection and realize professional active and standby switching with the path as link 1+1/1:1 protection backup path.
Among the present invention, LSP1+1/1:1 protection realizes that at 3 nodes said 3 nodes are: target P TN node (PTN node A), main road PTN node (PTN node D) and road PTN node (PTN node E) fully.
The node of realizing the LSP1+1/1:1 protection is dynamic change; When the business of RNC equipment is during from main road PTN node to RNC equipment; Be that the combination of target P TN node and main road PTN node realizes the LSP1+1/1:1 protection; When the business of RNC equipment is when being equipped with road PTN node to RNC equipment, be target P TN node and be equipped with road PTN node combination and realize the LSP1+1/1:1 protection.
When the present invention has realized the outage of main road PTN node to the protection of business.Among the present invention, protection mutually combines with link 1+1/1:1 for LSP1+1/1:1 protection, and the acting in conjunction realization is to the protection of business, and the coordination system of original creation is arranged 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 a target P TN node and two nodes that are connected with RNC equipment (main road PTN node with road PTN node) fully.Under different fault scenes, form the LSP1+1/1:1 protection for one in target P TN node and two and the RNC equipment connected node.
2: link 1+1/1:1 protection is disposed between PTN network and RNC equipment; The PTN network is not a node configuration link 1+1/1:1; But two all configuration link 1+1/:1 protections of the node that is connected with RNC; Two nodes cooperatively interact, and common the realization protected with the link 1+1/1:1 of RNC equipment interconnection.
The basic link 1+1/1:1 of 3:RNC equipment disposition protection, its collocation method and the Switchover mechanism configuration when following a PTN node to link to each other is identical.
4: when the PTN network internal breaks down,, only trigger the LSP1+1/1:1 protection, and do not trigger the link 1+1/1:1 protection between PTN network and the RNC equipment if fault occurs on the primary path of LSP1+1/1:1 protection.
5: when the primary path goes wrong of the link 1+1/1:1 that disposes between PTN network and RNC equipment protection, a trigger link 1+1/1:1 protection, and do not trigger the LSP1+1/1:1 protection.
6: when the primary path of the primary path of LSP1+1/1:1 protection and link 1+1/1:1 protection breaks 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 a plurality of nodes cooperatively interacts and two kinds of modes that protected mode cooperatively interacts; Realized complete trails protection, accomplished to occur on the professional primary path any fault and can realize protection business to the RNC appliance services of the PTN network carrying.And this protected mode does not have specific (special) requirements to RNC equipment, only needs the basic link 1+1/1:1 protection of configuration to get final product, and is the practical applications that does not yet influence this guard method under the situation of devices from different manufacturers intercommunication at PTN network and RNC equipment.
Specify the present invention below in conjunction with Fig. 3～6 and the concrete treatment mechanism under the various failure conditions occurs at network:
Treatment mechanism when 1) the PTN network internal breaks down on the vocational work path
As shown in Figure 3; When the connection between the B-C node on the operating path of business is broken down; When the primary path of LSP1+1/1:1 protection just broke down, the LSP1+1/1:1 protection of A node and D node was in state of activation, and the LSP1+1/1:1 protection of this fault triggering A node and D node is switched; Professional trend is changed to the backup path A-G-F-E-D of LSP1+1/1:1 protection in PTN network inscribe, and professional complete operating path becomes the A-G-F-E-D-RNC shown in the figure dashed bars.Connection on the professional operating path between the B-C node is broken down, and only triggers the LSP1+1/1:1 protection, can trigger link 1+1/1:1 protection.
2) treatment mechanism that the connection between PTN equipment and the RNC equipment is broken down on the vocational work path
As shown in Figure 4, the connection on the vocational work path between PTN network and the RNC equipment is broken down, and when the primary path of link 1+1/1:1 protection just breaks down, triggers the link 1+1/1:1 protection between PTN network and the RNC equipment:
(1) the 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) link 1+1/1:1 protection takes place after the link 1+1/1:1 primary path fault and switches in the D node detection, and business is mail to the D-E direction, and the connection through D-E is with D-RNC path failure information notice E node simultaneously;
(3) the E node receives and link 1+1/1:1 protection also takes place after the D-RNC path failure information switches, and will mail to the E-RNC direction from the business that the D node receives.
Link 1+1/1:1 protection all takes place in three nodes switch after, professional primary path D-RNC from link 1+1/1:1 protection switches to backup path D-E-RNC, professional operating path becomes and is depicted as A-B-C-D-E – RNC like Fig. 4 dashed bars.Connection between the D-RNC equipment the trigger link 1+1/1:1 protection of breaking down does not trigger the LSP1+1/1:1 protection.
After link 1+1/1:1 protection took place, the D node had become professional pass-thru node in the PTN network internal from the following words node of business, and the E node becomes professional following words node.When link 1+1/1:1 protection was switched, D node LSP1+1/1:1 protection can switch to not state of activation, and E node LSP1+1/1:1 protection can switch to state of activation.A complete LSP1+1/1:1 protection is formed in the LSP1+1/1:1 protection of A node and E node configuration.
3) the PTN network internal breaks down on the vocational work path, the treatment mechanism the when connection between PTN network and the RNC equipment is also broken down
As shown in Figure 5 working does that the PTN network internal breaks down on the path, and the connection between PTN network and the RNC equipment is also broken down, and the sequencing that takes place according to fault has two kinds of handling processes:
The fault of A, PTN network internal takes place earlier, takes place after the connection fault between PTN network and the RNC equipment
(1) the PTN network internal breaks down the back with failure condition 1) said, trigger the LSP1+1/1:1 protection and switch, professional operating path becomes A-G-F-E-D shown in Fig. 3 dashed bars;
(2) after the connection between PTN network and the RNC equipment was also broken down, the D node switched to not state of activation with LSP1+1/1:1, and the connection fault message with D-RNC sends to the E node simultaneously;
(3) after the E node receives the connection fault message of D-RNC; Trigger link 1+1/1:1 protection is switched, and business is switched to the subsequent use direction E-RNC that link 1+1/1:1 protects, and the E node activates the LSP1+1/1:1 protection simultaneously; The E node detection is switched after LSP1+1/1:1 protection primary path fault; LSP1+1/1:1 protection switches to backup path A-G-F-E with business, and whole reversed process is accomplished, professional work the path become A-G-F-E-RNC shown in Fig. 5 dashed bars.
Connection fault between B, PTN network and the RNC equipment takes place earlier, takes place after the PTN network internal fault
(1) after the connection fault between PTN network and the RNC equipment with failure condition 2) said; Trigger link 1+1/1:1 protection; Professional operating path becomes A-B-C-D-E-RNC shown in Fig. 4 dashed bars; D node LSP1+1/1:1 protection simultaneously switches to not state of activation, and E node LSP1+1/1:1 protection switches to state of activation.
(2) after the PTN network internal breaks down again, trigger the LSP1+1/1:1 protection of A node and E node and switch, the LSP1+1/1:1 protection switches to backup path A-G-F-E, and professional operating path becomes the A-G-F-E-RNC. shown in Fig. 5 dashed bars
In sum; The PTN network internal breaks down on the vocational work path; When the connection between PTN network and the RNC equipment is also broken down, both triggered the LSP1+1/1:1 protection of PTN network internal and switched, the link 1+1/1:1 protection that also triggers between PTN network and the RNC equipment is switched; Two kinds of protections cooperatively interact, and have realized the protection to business jointly.
4) treatment mechanism during main road PTN node failure
As shown in Figure 6, during D node on the vocational work path (main road PTN node) fault, both triggered the LSP1+1/1:1 protection, also trigger link 1+1/1:1 protection, its concrete handling process is following:
(1) the E node detection activates the LSP1+1/1:1 protection behind the D node failure, because of the 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 the 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.Professional operating path becomes the A-G-F-E-RNC shown in Fig. 6 dashed bars.
In sum, during main road PTN node failure, trigger LSP1+1/1:1 protection simultaneously and switch with link 1+1/1:1 protection and switch, two kinds of protections cooperatively interact, and have realized the protection to business jointly.
The content of not doing in this specification to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (5)
1. one kind is utilized the kinds of protect mode to make up the method that realizes PTN equipment dual-homing protection, it is characterized in that:
RNC equipment main with circuit and extension wire respectively with the PTN network in two different PTN nodes link to each other, and lead the PTN node that is connected with circuit and be called main road PTN node, the PTN node that is connected with extension wire is called and is equipped with road PTN node,
Main road PTN node and be equipped with road PTN node all through formation primary path and backup path between the target P TN node of PTN network and PTN business,
In the PTN network internal, realize professional protection through the LSP1+1/1:1 protection,
Between PTN network and RNC equipment, through main road PTN node, be equipped with the link 1+1/1:1 protection that road PTN node and RNC equipment forms and realize protection to business,
When the connection simultaneous faults between PTN network internal and PTN network and the RNC equipment, then LSP1+1/1:1 protection and two kinds of protections of link 1+1/1:1 protection join together to realize the protection to business.
2. the kinds of protect mode of utilizing as claimed in claim 1 makes up the method that realizes PTN equipment dual-homing protection, it is characterized in that:
Target P TN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 of target P TN node is the LSP1+1/1:1 protection of standard, is in state of activation all the time;
Main road PTN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 of main road PTN node is the LSP1+1/1:1 protection of standard, can between the state that activates and do not activate, switch according to online failure condition:
Under trouble-free situation, the LSP1+1/1:1 of main road PTN node protection is in state of activation, forms a complete LSP1+1/1:1 protection instance with the LSP1+1/1:1 protection that target P TN node is disposed; When occurring some fault scenes on the network, the LSP1+1/1:1 protection of main road PTN node can switch to not state of activation;
Be equipped with road PTN node configuration LSP1+1/1:1 protection, the LSP1+1/1:1 that is equipped with road PTN node is the LSP1+1/1:1 protection of standard, can between the state that activates and do not activate, switch according to online failure condition:
Under trouble-free situation, the LSP1+1/1:1 protection that is equipped with road PTN node is in not state of activation; When occurring some fault scenes on the network; The LSP1+1/1:1 protection of main road PTN node can switch to not state of activation; The LSP1+1/1:1 protection that is equipped with road PTN node simultaneously can switch to state of activation, forms a complete LSP1+1/1:1 protection with the LSP1+1/1:1 protection that target P TN node is disposed;
The link 1+1/1:1 protection of RNC device configuration standard,
Main road PTN node and road PTN node configuration link 1+1/1:1 protection are fully formed the link 1+1/1:1 protection of PTN network internal, with complete link 1+1/1:1 protection instance of link 1+1/1:1 protection composition of RNC equipment disposition.
3. the method for utilizing the kinds of protect mode to make up to realize PTN equipment dual-homing protection as claimed in claim 2, it is characterized in that: RNC equipment primary path links to each other with main road PTN node, and RNC equipment sparing path links to each other with road PTN node fully,
Main road PTN node and be equipped with road PTN node and utilize in the PTN network connection between two nodes to transmit separately and the make-and-break status information in path between the RNC equipment; And utilize the part of two connections of node in the PTN network of active and standby usefulness, cooperate together when switching in link 1+1/1:1 protection and realize professional active and standby switching with the path as link 1+1/1:1 protection backup path.
4. the kinds of protect mode of utilizing as claimed in claim 2 makes up the method that realizes PTN equipment dual-homing protection; It is characterized in that: the node of realizing the LSP1+1/1:1 protection is dynamic change; When the business of RNC equipment is during from main road PTN node to RNC equipment; Being that the combination of target P TN node and main road PTN node realizes the LSP1+1/1:1 protection, when the business of RNC equipment is when being equipped with road PTN node to RNC equipment, is target P TN node and be equipped with road PTN node combination and realize the LSP1+1/1:1 protection.
5. the kinds of protect mode of utilizing as claimed in claim 2 makes up the method that realizes PTN equipment dual-homing protection, it is characterized in that, when breaking down scene on the network, protects by following protection strategy:
When the PTN network internal breaks down, if fault occurs on the primary path of LSP1+1/1:1 protection, only trigger the 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 that disposes between PTN network and RNC equipment protection, a trigger link 1+1/1:1 protection, and do not trigger the LSP1+1/1:1 protection;
When the primary path of the primary path of LSP1+1/1:1 protection and link 1+1/1:1 protection breaks 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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