CN108768816A - The polycyclic relaying configuration method and system of PTN looped network protections - Google Patents
The polycyclic relaying configuration method and system of PTN looped network protections Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
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Abstract
The invention discloses a kind of polycyclic relaying configuration method and system of PTN looped network protections, are related to PTN looped network protections field.This approach includes the following steps：To increase the intersecting ring configuration of respective entries in each ring of intersecting ring relationship newly, this is configured to the son configuration of ring configured in one piece, includes in every configuration：Intersecting ring KEY values, crossed node ID, intersecting ring set of tags；When LSP binds three or more rings, three retaining ring KEY values are configured for each LSP retaining rings：Upper words ring KEY values, this ring KEY values, lower words ring KEY values, ring KEY values are a kind of global index's values of ring configuration, and upper words ring is that LSP enters the ring passed through before this ring, this ring is this current ring, and lower words ring is the ring for continuing binding after LSP goes out ring from this ring.The present invention can realize that LSP binds the looped network protection under three or more the complex scenes of ring.
Description
Technical field
The present invention relates to PTN looped network protections fields, are specifically related to a kind of polycyclic relaying configuration method of PTN looped network protections
And system.
Background technology
With the continuous evolution of Internet era, network coverage rapid expansion, network bandwidth is also being continuously increased, people
It is more and more stronger to the dependence of network, network reliability plays more and more crucial effect in terms of promoting user experience.
In the case that early stage networking structure is single, portfolio is little, the linear protection of least unit can meet network can
By the basic demand of property, the demand for introducing the protection of different levels different type is not just so urgent.It is continuous with portfolio
Increase, it is contemplated that layered shaping is carried out to linear protection, the business of same paths same type is bundled to and comes together to protect
Protective switching, while can also realize the defencive function superposition of different levels, reliability is not only improved, but also improve treatment effeciency.
Increasingly sophisticated with group net topology, the defect of linear protection also gradually exposes, i.e. fault incidence relatively wide (one
Locating failure influences whole link).Looped network protection is switched at failure, just plays good supplementary function to linear protection.
The configuration of looped network protection is not dependent on matching for specific certain or certain business it is envisaged that specific networking topology situation
Path is set, the business in different paths can be bundled on the same ring.Looped network protection is in LSP (Label Switched
Path, label switched path) outer layer a kind of protection, compared with linear protection, it is advantageous that may be implemented batch switch, prop up
The disconnected fiber protection switching function of multiple spot, coverage smaller (only being switched at malfunctioning node both ends) etc. are held, simultaneously because online
Property protection outer layer, use can be superimposed with linear protection.The introducing of looped network protection makes network reliability be greatly improved.
PTN (Packet Transport Network, Packet Transport Network) corresponding standard of looped network protection function is
G.8132, newest standards update is in part of in August, 2017.Initial looped network protection scheme pertains only to monocycle function, on each node
It can only realize disturbance switching at one, increase bicyclic multipoint fault protection switch function later.But simple monocycle and bicyclic
Topology still has certain limitation in real networking, this is also one of the bottleneck for influencing looped network large scale deployment.Work as industry
In the case of the longer and existing net topology complexity in path of being engaged in, a business may pass through three even more rings, this when of letter
Single monocycle and bicyclic function cannot meet the needs of switching scene to greatest extent；In addition polycyclic topology is split as several
A monocycle and bicyclic combination also increase the complexity of configuring early period and late problems positioning to a certain extent.Such as
Where realize that looped network protection function becomes urgent technical problem to be solved in the field under the complex scene of three or more rings.
Invention content
The purpose of the invention is to overcome the shortcomings of above-mentioned background technology, a kind of polycyclic guarantor of PTN looped network protections is provided
Configuration method and system are protected, can realize that LSP binds the looped network protection function under three or more the complex scenes of ring.
The present invention provides a kind of polycyclic relaying configuration method of PTN looped network protections, includes the following steps：
To increase the intersecting ring configuration of respective entries in each ring of intersecting ring relationship newly, this is configured to the son of ring configured in one piece
It configures, includes in every configuration：Intersecting ring KEY values, crossed node ID, intersecting ring set of tags, intersecting ring KYE values are corresponding
The configuration index of intersecting ring, crossed node ID are number of the crossed node in ring, intersecting ring set of tags be under this ring ring it
Enter one group of ring label of the traffic assignments of intersecting ring afterwards；
When LSP binds three or more rings, three retaining ring KEY values are configured for each LSP retaining rings：Upper words ring KEY values, this ring
KEY values, lower words ring KEY values, ring KEY values are a kind of global index's values of ring configuration, and upper words ring is passed through before LSP enters this ring
A ring, this ring is this current ring, and lower words ring is the ring for continuing binding after LSP goes out ring from this ring.
Based on the above technical solution, it is further comprising the steps of after the LSP binds three or more rings：
Pretection switch is carried out to ring interior joint, detailed process is：
At the upper words node of upper words ring, LSP enters upper words ring in the node, stamps " above talking about ring " intersection corresponding with this ring
Ring label, it is intersecting ring set of tags to switch object, switch principle be G.8132 in monocycle switch principle；
At the upper words node of this ring, LSP words ring intersecting ring labels corresponding with this ring in the pop-up of this node carry out LSP
After Tag switching, this ring intersecting ring label corresponding with lower words ring is stamped；It is that monocycle switches and intersects ring switching to switch principle
Combination；
Symmetrically above another crossed node of words ring and this ring, LSP are talked about in node pop-up with node is talked about on this ring
Ring intersecting ring label corresponding with this ring stamps this ring intersecting ring mark corresponding with lower words ring after carrying out LSP label exchange
Label；It switches the monocycle that principle is intersecting ring set of tags and switches principle；
At the upper words node of lower words ring, LSP pops up this ring intersecting ring label corresponding with lower words ring in this node, carries out
After LSP label exchanges, the local ring label of lower words ring is stamped；It is the combination that monocycle switches and intersects ring switching to switch principle；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, LSP pops up this ring in the node
Intersecting ring label corresponding with lower words ring after carrying out LSP label exchange, stamps the local ring label of lower words ring；Switch principle
Principle is switched for the monocycle in G.8132；
The node of the non-ring of words up and down on the ring that business is passed through, the node are not present retaining ring relationship, switch principle and follow
G.8132 the monocycle in switches principle.
Based on the above technical solution, in three retaining rings KEY values, there are this ring KEY of the LSP of retaining ring relationship
Value is not 0, and upper words ring KEY values and lower words ring KEY values are zero or non-zero according to actual conditions.
Based on the above technical solution, it is further comprising the steps of when the LSP binds three or more rings：Intersecting
At another crossed node of ring, the LSP next-hops of the LSP configuration informations of copy crossed node, duplication are this crossed node, real
Existing two intersections and the mutual protection of node.
Based on the above technical solution, at the upper words node of the upper words ring, upper words ring KEY values are zero, this ring KEY
Value and lower words ring KEY values are not zero；
At the upper words node of this ring, that is, at the lower words node of upper words ring, that is, the crossed node of upper words ring and this ring
Locate, upper words ring KEY values, this ring KEY values, the lower words ring KEY values on this node are not zero；
Another crossed node of ring and this ring is symmetrically above talked about with words node on this ring, there is duplication on the node
The upper words ring KEY values of LSP, the LSP of duplication are zero, this ring KEY values are consistent with before duplication with lower words ring KEY values；
At the upper words node of lower words ring, that is, at the lower words node of this ring, that is, the crossed node of this ring and lower words ring
Place, the upper words ring KEY values and this ring KEY values of this node are not zero, and lower words ring KEY values are zero；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, the node there are the duplication of LSP,
This ring KEY values of the LSP of duplication are not zero, and upper words ring KEY values and lower words ring KEY values are 0.
The present invention also provides a kind of polycyclic relaying configuration system of PTN looped network protections, including the first dispensing unit, second match
Unit is set, wherein：
First dispensing unit is used for：To increase the intersecting ring configuration of respective entries in each ring of intersecting ring relationship newly, this is matched
It is set to the son configuration of ring configured in one piece, includes in every configuration：Intersecting ring KEY values, crossed node ID, intersecting ring set of tags,
Intersecting ring KYE values are the configuration indexes of corresponding intersecting ring, and crossed node ID is number of the crossed node in ring, intersecting ring mark
Label group is one group of ring label of the traffic assignments for entering intersecting ring after ring under this ring；
Second dispensing unit is used for：When LSP binds three or more rings, three retaining ring KEY are configured for each LSP retaining rings
Value：Upper words ring KEY values, this ring KEY values, lower words ring KEY values, ring KEY values are a kind of global index's values of ring configuration, and upper words ring is
LSP enters the ring passed through before this ring, this ring is this current ring, and lower words ring is to continue to tie up after LSP goes out ring from this ring
Fixed ring.
Based on the above technical solution, which further includes pretection switch unit, and the pretection switch unit is used for：
After LSP binds three or more rings, pretection switch is carried out to ring interior joint, detailed process is：
At the upper words node of upper words ring, LSP enters upper words ring in the node, stamps " above talking about ring " intersection corresponding with this ring
Ring label, it is intersecting ring set of tags to switch object, switch principle be G.8132 in monocycle switch principle；
At the upper words node of this ring, LSP words ring intersecting ring labels corresponding with this ring in the pop-up of this node carry out LSP
After Tag switching, this ring intersecting ring label corresponding with lower words ring is stamped；It is that monocycle switches and intersects ring switching to switch principle
Combination；
Symmetrically above another crossed node of words ring and this ring, LSP are talked about in node pop-up with node is talked about on this ring
Ring intersecting ring label corresponding with this ring stamps this ring intersecting ring mark corresponding with lower words ring after carrying out LSP label exchange
Label；It switches the monocycle that principle is intersecting ring set of tags and switches principle；
At the upper words node of lower words ring, LSP pops up this ring intersecting ring label corresponding with lower words ring in this node, carries out
After LSP label exchanges, the local ring label of lower words ring is stamped；It is the combination that monocycle switches and intersects ring switching to switch principle；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, LSP pops up this ring in the node
Intersecting ring label corresponding with lower words ring after carrying out LSP label exchange, stamps the local ring label of lower words ring；Switch principle
Principle is switched for the monocycle in G.8132；
The node of the non-ring of words up and down on the ring that business is passed through, the node are not present retaining ring relationship, switch principle and follow
G.8132 the monocycle in switches principle.
Based on the above technical solution, in three retaining rings KEY values, there are this ring KEY of the LSP of retaining ring relationship
Value is not 0, and upper words ring KEY values and lower words ring KEY values are zero or non-zero according to actual conditions.
Based on the above technical solution, which further includes LSP configuration copied cells, and the LSP configurations replicate single
Member is used for：When LSP binds three or more rings, at another crossed node of intersecting ring, the LSP of copy crossed node matches confidence
The LSP next-hops of breath, duplication are this crossed node, realize two intersections and the mutual protection of node.
Based on the above technical solution, at the upper words node of the upper words ring, upper words ring KEY values are zero, this ring KEY
Value and lower words ring KEY values are not zero；
At the upper words node of this ring, that is, at the lower words node of upper words ring, that is, the crossed node of upper words ring and this ring
Locate, upper words ring KEY values, this ring KEY values, the lower words ring KEY values on this node are not zero；
Another crossed node of ring and this ring is symmetrically above talked about with words node on this ring, there is duplication on the node
The upper words ring KEY values of LSP, the LSP of duplication are zero, this ring KEY values are consistent with before duplication with lower words ring KEY values；
At the upper words node of lower words ring, that is, at the lower words node of this ring, that is, the crossed node of this ring and lower words ring
Place, the upper words ring KEY values and this ring KEY values of this node are not zero, and lower words ring KEY values are zero；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, the node there are the duplication of LSP,
This ring KEY values of the LSP of duplication are not zero, and upper words ring KEY values and lower words ring KEY values are 0.
Compared with prior art, advantages of the present invention is as follows：
(1) present invention increases respective entries newly on the basis of monocycle and bicyclic function in each ring for being intersecting ring relationship
Intersecting ring configuration, this be configured to ring configured in one piece son configuration, every configuration in include：Intersecting ring KEY values, crossed node
ID, intersecting ring set of tags, intersecting ring KYE values are the configuration indexes of corresponding intersecting ring, and crossed node ID is crossed node in ring
Interior number, intersecting ring set of tags are one group of ring label of the traffic assignments for entering intersecting ring after ring under this ring；LSP is bound
When three or more rings, three retaining ring KEY values are configured for each LSP retaining rings：Upper words ring KEY values, this ring KEY values, lower words ring KEY
Value, ring KEY values are a kind of global index's values of ring configuration, and upper words ring is that LSP enters the ring passed through before this ring, this ring is
This current ring, lower words ring is the ring for continuing binding after LSP goes out ring from this ring.G.8132MPLS-TP, environmental protection is shared to standard
Shield scheme is extended and has been upgraded, and that is never mentioned in realization standard carries out the disconnected fine protection of polycyclic multiple spot as unit of tricyclic
Switch function, realize LSP bind the looped network protection function under the complex scene of multiple rings, effectively shorten looped network protection function from
The distance of theory into action, to accelerating the whole network deployment of looped network protection function to have very important meaning.
(2) present invention also enhances the ease for operation of configuration and the ease for maintenance of function while expanded function scene.
Description of the drawings
Fig. 1 is the configuration schematic diagram of three ring protections in the embodiment of the present invention.
Fig. 2 is the schematic diagram that each monocycle is switched in tricyclic in the embodiment of the present invention.
Fig. 3 is the bicyclic schematic diagram switched of this ring in tricyclic in the embodiment of the present invention.
Fig. 4 is to talk about the bicyclic schematic diagram switched of ring in the embodiment of the present invention in tricyclic down.
Fig. 5 is the configuration schematic diagram of four ring protections in the embodiment of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Embodiment 1
The shared rings of multiple MPLS-TP may be passed through on the paths LSP to be tied to LSP paragraph by paragraph for service path feature
On each looped network, the piecewise protection in the paths LSP may be implemented.It, can be in order to realize the disconnected fine defencive function of multiple spot to the greatest extent
Ring to being physically present overlapping relation is associated, and there may be associated rings to include lantern and downstream thereon with the same ring
Ring on the basis of the bicyclic protection that the embodiment of the present invention is mentioned in draft, provides a kind of polycyclic protection of PTN looped network protections and matches
Method is set, is included the following steps：
To increase the intersecting ring configuration of respective entries in each ring of intersecting ring relationship newly, this is configured to the son of ring configured in one piece
It configures, includes in every configuration：Intersecting ring KEY values, crossed node ID, intersecting ring set of tags, intersecting ring KYE values are corresponding
The configuration index of intersecting ring, crossed node ID are number of the crossed node in ring, intersecting ring set of tags be under this ring ring it
Enter one group of ring label of the traffic assignments of intersecting ring afterwards；
When LSP binds three or more rings, three retaining ring KEY values are configured for each LSP retaining rings：Upper words ring KEY values, this ring
KEY values, lower words ring KEY values, ring KEY values are a kind of global index's values of ring configuration, and upper words ring is passed through before LSP enters this ring
A ring, this ring is this current ring, and lower words ring is the ring for continuing binding after LSP goes out ring from this ring.
Embodiment 2
It is further comprising the steps of after LSP binds three or more rings on the basis of embodiment 1：
Pretection switch is carried out to ring interior joint, detailed process is：
At the upper words node of upper words ring, LSP enters upper words ring in the node, stamps " above talking about ring " intersection corresponding with this ring
Ring label, it is intersecting ring set of tags to switch object, switch principle be G.8132 in monocycle switch principle；
At the upper words node of this ring, LSP words ring intersecting ring labels corresponding with this ring in the pop-up of this node carry out LSP
After Tag switching, this ring intersecting ring label corresponding with lower words ring is stamped；It is that monocycle switches and intersects ring switching to switch principle
Combination；
Symmetrically above another crossed node of words ring and this ring, LSP are talked about in node pop-up with node is talked about on this ring
Ring intersecting ring label corresponding with this ring stamps this ring intersecting ring mark corresponding with lower words ring after carrying out LSP label exchange
Label；It switches the monocycle that principle is intersecting ring set of tags and switches principle；
At the upper words node of lower words ring, LSP pops up this ring intersecting ring label corresponding with lower words ring in this node, carries out
After LSP label exchanges, the local ring label of lower words ring is stamped；It is the combination that monocycle switches and intersects ring switching to switch principle；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, LSP pops up this ring in the node
Intersecting ring label corresponding with lower words ring after carrying out LSP label exchange, stamps the local ring label of lower words ring；Switch principle
Principle is switched for the monocycle in G.8132；
The node of the non-ring of words up and down on the ring that business is passed through, the node are not present retaining ring relationship, switch principle and follow
G.8132 the monocycle in switches principle.
Embodiment 3
It is not 0 there are this ring KEY values of the LSP of retaining ring relationship in three retaining ring KEY values on the basis of embodiment 2,
Upper words ring KEY values and lower words ring KEY values are zero or non-zero according to actual conditions.
Embodiment 4
It is further comprising the steps of when LSP binds three or more rings on the basis of embodiment 3：In another phase of intersecting ring
It hands at node, the LSP configuration informations of copy crossed node, the LSP next-hops of duplication are this crossed node, realize two intersections
And the mutual protection of node.
Embodiment 5
On the basis of embodiment 4, at the upper words node of upper words ring, upper words ring KEY values are zero, this ring KEY values and lower words
Ring KEY values are not zero；
At the upper words node of this ring, that is, at the lower words node of upper words ring, that is, the crossed node of upper words ring and this ring
Locate, upper words ring KEY values, this ring KEY values, the lower words ring KEY values on this node are not zero；
Another crossed node of ring and this ring is symmetrically above talked about with words node on this ring, there is duplication on the node
The upper words ring KEY values of LSP, the LSP of duplication are zero, this ring KEY values are consistent with before duplication with lower words ring KEY values；
At the upper words node of lower words ring, that is, at the lower words node of this ring, that is, the crossed node of this ring and lower words ring
Place, the upper words ring KEY values and this ring KEY values of this node are not zero, and lower words ring KEY values are zero；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, the node there are the duplication of LSP,
This ring KEY values of the LSP of duplication are not zero, and upper words ring KEY values and lower words ring KEY values are 0.
Embodiment 6
The embodiment of the present invention 6 provides a kind of polycyclic relaying configuration system of PTN looped network protections, which includes the first configuration
Unit, the second dispensing unit, wherein：
First dispensing unit is used for：To increase the intersecting ring configuration of respective entries in each ring of intersecting ring relationship newly, this is matched
It is set to the son configuration of ring configured in one piece, includes in every configuration：Intersecting ring KEY values, crossed node ID, intersecting ring set of tags,
Intersecting ring KYE values are the configuration indexes of corresponding intersecting ring, and crossed node ID is number of the crossed node in ring, intersecting ring mark
Label group is one group of ring label of the traffic assignments for entering intersecting ring after ring under this ring；
Second dispensing unit is used for：When LSP binds three or more rings, three retaining ring KEY are configured for each LSP retaining rings
Value：Upper words ring KEY values, this ring KEY values, lower words ring KEY values, ring KEY values are a kind of global index's values of ring configuration, and upper words ring is
LSP enters the ring passed through before this ring, this ring is this current ring, and lower words ring is to continue to tie up after LSP goes out ring from this ring
Fixed ring.
Embodiment 7
On the basis of embodiment 6, the polycyclic relaying configuration system of PTN looped network protections further includes pretection switch unit, is protected
Protective switching unit is used for：
After LSP binds three or more rings, pretection switch is carried out to ring interior joint, detailed process is：
At the upper words node of upper words ring, LSP enters upper words ring in the node, stamps " above talking about ring " intersection corresponding with this ring
Ring label, it is intersecting ring set of tags to switch object, switch principle be G.8132 in monocycle switch principle；
At the upper words node of this ring, LSP words ring intersecting ring labels corresponding with this ring in the pop-up of this node carry out LSP
After Tag switching, this ring intersecting ring label corresponding with lower words ring is stamped；It is that monocycle switches and intersects ring switching to switch principle
Combination；
Symmetrically above another crossed node of words ring and this ring, LSP are talked about in node pop-up with node is talked about on this ring
Ring intersecting ring label corresponding with this ring stamps this ring intersecting ring mark corresponding with lower words ring after carrying out LSP label exchange
Label；It switches the monocycle that principle is intersecting ring set of tags and switches principle；
At the upper words node of lower words ring, LSP pops up this ring intersecting ring label corresponding with lower words ring in this node, carries out
After LSP label exchanges, the local ring label of lower words ring is stamped；It is the combination that monocycle switches and intersects ring switching to switch principle；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, LSP pops up this ring in the node
Intersecting ring label corresponding with lower words ring after carrying out LSP label exchange, stamps the local ring label of lower words ring；Switch principle
Principle is switched for the monocycle in G.8132；
The node of the non-ring of words up and down on the ring that business is passed through, the node are not present retaining ring relationship, switch principle and follow
G.8132 the monocycle in switches principle.
Embodiment 8
It is not 0 there are this ring KEY values of the LSP of retaining ring relationship in three retaining ring KEY values on the basis of embodiment 7,
Upper words ring KEY values and lower words ring KEY values are zero or non-zero according to actual conditions.
Embodiment 9
On the basis of embodiment 8, the polycyclic relaying configuration system of PTN looped network protections further includes LSP configuration copied cells,
LSP configuration copied cells are used for：When LSP binds three or more rings, at another crossed node of intersecting ring, copy intersection section
The LSP next-hops of the LSP configuration informations of point, duplication are this crossed node, realize two intersections and the mutual protection of node.
Embodiment 10
On the basis of embodiment 9, at the upper words node of upper words ring, upper words ring KEY values are zero, this ring KEY values and lower words
Ring KEY values are not zero；
At the upper words node of this ring, that is, at the lower words node of upper words ring, that is, the crossed node of upper words ring and this ring
Locate, upper words ring KEY values, this ring KEY values, the lower words ring KEY values on this node are not zero；
Another crossed node of ring and this ring is symmetrically above talked about with words node on this ring, there is duplication on the node
The upper words ring KEY values of LSP, the LSP of duplication are zero, this ring KEY values are consistent with before duplication with lower words ring KEY values；
At the upper words node of lower words ring, that is, at the lower words node of this ring, that is, the crossed node of this ring and lower words ring
Place, the upper words ring KEY values and this ring KEY values of this node are not zero, and lower words ring KEY values are zero；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, the node there are the duplication of LSP,
This ring KEY values of the LSP of duplication are not zero, and upper words ring KEY values and lower words ring KEY values are 0.
The principle of the embodiment of the present invention is illustrated in detail below.
The configuration of intersecting ring relationship is handled：
G.8132 the bicyclic defencive function typical scene pointed out in standard is that binode intersects scene, at this time two intersection sections
Point is protected each other, to reach the irrealizable defencive function of monocycle function.
In order to achieve the purpose that two crossed nodes are protected each other, for each the intersecting ring (ring intersected with this ring (ring A)
B one group of across intersecting ring label) is distributed, can be into ring channel common the retaining ring LSP of ring B after words under ring A for marking, these
Set of tags is characterized in popping up (label action pop-up in two crossed nodes：POP), to reach mutual protection, therefore
The corresponding configuration of this group of label also needs to include crossed node information.
Therefore, the intersecting ring configuration of respective entries will be increased in each ring of intersecting ring relationship newly, this is configured to ring entirety
The son configuration of configuration, needs the information for including to be in every configuration：Intersecting ring KEY values, crossed node ID, intersecting ring set of tags,
Intersecting ring KYE values are the configuration indexes of corresponding intersecting ring；Crossed node ID refers to number of the crossed node in ring；Intersecting ring
Set of tags is one group of ring label of the traffic assignments that enter intersecting ring after ring under this ring.
LSP binds polycyclic retaining ring relationship configuration processing：
One retaining ring LSP when ring on a certain node, exist therewith incidence relation ring at most may there are three, i.e.,
The ring (ring A) talked about under this node, the ring (ring B) talked about from this node, the upper ring (ring C) talked about again after ring under ring B.Therefore
One LSP retaining ring needs to record three retaining ring KEY value informations, is referred to as：Upper words ring KEY values, this ring KEY values, lower words ring KEY
Value, ring KEY values are a kind of global index's values of ring configuration, upper words ring refer to LSP enter before this ring just past a ring,
This ring is exactly this present ring, and lower words ring refers to that ring that continue binding after LSP goes out ring from this ring, wherein there are retaining rings
This ring KEY value informations of the LSP of relationship must not be 0, and upper words ring KEY values and lower words ring KEY values can be with according to actual conditions
It is zero or non-zero.
In addition, when a LSP binds multiple rings, at another crossed node of intersecting ring, copy phase is needed
The LSP configuration informations of node are handed over, the LSP next-hops of duplication are this crossed node, to realize that two intersections and node are mutually protected
The purpose of shield.
The pretection switch processing of each representativeness node：
Each representativeness node mainly has following 6 kinds：
First, at the upper words node of upper words ring, it is zero that ring KEY values are talked about on the node, this ring KEY values and lower words ring KEY values are not
Be zero, LSP enters upper words ring in the node, stamps " above talking about ring " intersecting ring label corresponding with this ring, at specific state machine
The monocycle defencive function that reason mode is introduced in being similar to standard G.8132, is a difference in that the object of switching being directed to is intersecting ring mark
Label group specifically switches principle and switches principle with the monocycle in G.8132, no longer illustrates herein.
Second is that at the upper words node of this ring, that is, at the lower words node of upper words ring, that is, the intersection of upper words ring and this ring
At node, upper words ring KEY values, this ring KEY values, lower words ring KEY values on this node are not zero.LSP is in the pop-up of this node
It talks about ring intersecting ring label corresponding with this ring and stamps this ring intersecting ring mark corresponding with lower words ring after carrying out LSP label exchange
Label.It is specific switch principle be related to monocycle switch principle and it is bicyclic switch principle, it is intersecting ring label that wherein monocycle, which switches principle,
The monocycle of group switches principle.Bicyclic principle of switching is with reference to patent《A kind of bicyclic escape implementation method of PTN looped network protections and it is
System》, no longer illustrate again.
Third, with node symmetrically upper another crossed node for talking about ring and this ring is talked about on this ring, exists on the node and replicate
LSP, the upper words ring KEY values of the LSP of duplication are zero, this ring KEY values with it is lower words ring KEY values with duplication before it is consistent.LSP is at this
Intersecting ring label corresponding with this ring stamps this ring and lower words ring pair after carrying out LSP label exchange on words ring in node pop-up
The intersecting ring label answered.It is specific switch principle and pertain only to the monocycle of intersecting ring set of tags switch principle.
Fourth, at the upper words node of lower words ring, that is, at the lower words node of this ring, that is, the intersection of this ring and lower words ring
At node, the upper words ring KEY values and this ring KEY values of this node are not zero, and lower words ring KEY values are zero.LSP pops up this in this node
Ring intersecting ring label corresponding with lower words ring after carrying out LSP label exchange, stamps the local ring label of lower words ring.Specifically
It is that monocycle is switched and no longer illustrated with the upper words node of this ring with the combination for intersecting ring switching to switch principle.
Fifth, another crossed node with this ring of words point symmetry and lower words ring on lower words ring, there are LSP to answer for the node
System, the LSP of duplication this ring KEY values are not zero, and upper words ring KEY values and lower words ring KEY values are 0.LSP pops up this ring in the node
Intersecting ring label corresponding with lower words ring after carrying out LSP label exchange, stamps the local ring label of lower words ring.Switch principle
Principle is switched with the monocycle in G.8132.
Sixth, the node of the non-ring of words up and down on the ring that business is passed through, the node are not present retaining ring relationship, switch principle and abide by
Monocycle in following G.8132 switches principle.
It should be noted that when LSP polycyclic more than three of binding, place can be combined by model of tricyclic principle
Reason, has absolutely proved the extensive scope of application of this method.
It is shown in Figure 1, be followed successively by node " one two three the third fourth of second " on ring 1 from node 1 to node 6, on ring two from and section
Point 1 is followed successively by node " three four five ten the first and second " to node 6, and " 567890 " are followed successively by from node 1 to node 6 on ring 3,
LSP normal routes are node " one two three four five six seven eight ".
Intersecting ring relationship (node three and node second be crossed node) is configured to ring 1 and ring 2, to ring 2 and the configuration intersection of ring 3
Ring relationship (node five and node ten be crossed node).
Increase following intersecting ring configuration in entire topology：
(1) ring 1：
Configure entry one：Intersecting ring KEY values 2, crossed node KEY values (3,4), crossed node set of tags (8001,8002,
8003,8004)；
Intersecting ring KEY values refer to corresponding intersecting ring index；Crossed node ID is number of the crossed node in this ring, intersection
Ring is binode intersection, therefore there are two crossed node ID；Crossed node set of tags has 4 altogether, is respectively：Work clockwise
Label, protects label, protects label counterclockwise work tap counterclockwise clockwise.
(2) ring 2：
Configure entry one：Intersecting ring KEY values 1, crossed node KEY values (6,1), crossed node set of tags (8005,8006,
8007,8008)；
Configure entry two：Intersecting ring KEY values 3, crossed node KEY values (3,4), crossed node set of tags (8009,8010,
8011,8012)；
(3) ring 3：
Configure entry one：Intersecting ring KEY values 2, crossed node KEY values (6,1), crossed node set of tags (8013,8014,
8015,8016)；
Note：Crossed node format description is (crossed node 1, crossed node 2), and crossed node set of tags format description is
(work tap clockwise, work tap counterclockwise protect label, protect label counterclockwise clockwise).
Due to being related to the exchange of local ring label on ring 3, it is assumed that on ring 3 to the set of tags of the words of node 10 time for (401,
402,403,404)。
Before LSP retaining rings, in node one PUSH (indentation) LSP label, go out LSP label in eight POP of node (pop-up), remaining
Node, that is, node 234567 is performed both by LSP label SWAP (exchange) actions.
After LSP binds three rings simultaneously, intermediate node on ring, i.e. node two on ring 1, the node four on ring 2, ring 3
On node six any action no longer is executed to LSP label, only ring label is swapped, the retaining ring relationship of remaining typical node
And respective action is described as follows：
(1) node one：
LSP next-hop nodes are node two, and retaining ring is configured to：(0,1,2)；
LSP is on node PUSH after LSP label, while intersecting ring work tap 8001 on PUSH again, or after switching
Protection label 8004；
(2) node three：
LSP next-hop nodes are node four, and retaining ring is configured to：(1,2,3)；
LSP carries out LSP label SWAP, while intersecting ring work on PUSH again after POP goes out work tap 8001 on this node
Make label 8009, or the protection label 8012 after switching；
(3) node second：
LSP next-hop nodes are node three, and retaining ring is configured to：(0,2,3)；
LSP carries out LSP label SWAP, while intersecting ring work on PUSH again after POP goes out to protect label 8004 on this node
Make label 8009, or the protection label 8012 after switching；
(4) node five：
LSP next-hop nodes are node six, and retaining ring is configured to：(2,3,0)；
LSP carries out LSP label SWAP, while monocycle work PUSH on again after POP goes out work tap 8009 on this node
Label 401, or the protection label 404 after switching；
(5) node ten：
LSP next-hop nodes are node five, and retaining ring is configured to：(0,3,0)；
LSP carries out LSP label SWAP, while monocycle work mark on PUSH again after node POP goes out to protect label 8012
Label 401, or the protection label 404 after switching；
(6) node eight：
For LSP after the protection label 404 after node POP goes out work tap 401 or switches, POP goes out LSP label,
Business at the lower words node under talk about；
Note：Retaining ring configuration format explanation is (above talking about ring KEY values, this ring KEY values, lower words ring KEY values).
Illustrate the realization of the switch function in each ring with reference to Fig. 2-4：
There is the scene of failure at one in each ring in Fig. 2, at this time if being only configured with linear protection, it is possible that active and standby
All failure service disconnection as a result, still can normally be switched for ring protection business, the realization specifically switched is described as follows：
(1) in ring 1：
After node two detects failure, execution is switched, and label is transformed into protection label 8004 by work tap 8001, protects
Protect label POP at node second；
(2) in ring 2：
LSP ring labels 8009 on PUSH at the node second, since the failure between node first and node ten does not influence the LSP
Primary path node second 345 on ring 2, therefore work tap 8009 arrives five POP of node；
(3) in ring 3：
Node five detects that failure execution is switched, and LSP is pressed into protection label 404 at node five, finally in lower words node
POP goes out ring label 404 at node eight, while POP goes out LSP label, realizes the normal lower words of business.
Only the bicyclic switch function of ring 2 is illustrated in Fig. 3, principle is switched in remaining path with Fig. 2's.In ring 2,
LSP POP at node three go out intersecting ring work tap 8001, then carry out LSP label SWAP, are detecting distal end escape judgement
Escape operation is executed after condition, intersection ring protection label 8004 reenters ring 1 on PUSH, and POP falls intersecting ring at node second
Label 8004, and LSP label SWAP is carried out, then since there are failures between node three and second, monocycle occurs and switches, intersecting ring
Protection label 8012 subsequently enters ring 3 in node second PUSH in ten POP of node.
Principle is switched in remaining path with Fig. 2's only to be illustrated to the bicyclic switch function type on ring 3 in Fig. 4.In ring 3,
LSP POP at node five fall intersecting ring label 8009, carry out LSP label SWAP, are executed after detecting proximal end escape Rule of judgment
Escape operation, intersection ring protection label 8012 reenters ring 2 on PUSH, after POP falls intersecting ring label 8012 at the node ten
LSP label SWAP is carried out, subsequently enters ring 3, local ring protection label 404 is in ten PUSH of node, and in eight POP of node, business exists
It is talked about under the node.
The present invention is illustrated by base unit of tricyclic, also can be applicable in the polycyclic scene more than three rings, difference
Place is to have more several rings, and will to have more several upper words ring KEY values, this ring KEY values, lower words ring KEY values to similar node three equal
The retaining ring crossed node that is not zero and with its symmetrical crossed node node second, it is identical as tricyclic to switch principle.
On the basis of three rings, often increase a ring, a pair of intersecting node can be increased, but bind the information and three of ring
Ring is similar, that is, still it is only necessary to know that the parameter of three rings, i.e. this ring KEY values, upper words ring KEY on each crossed node
Value, lower words ring KEY values, this has mark, the configuration of node five and node ten, with node three and node in the Fig. 5 of document end
Second it is similar, only corresponding KEY values number is different according to present position, for polycyclic, often increases a ring, Jiu Huixin
Increase crossed node of a pair of of node three as node second, there is universality in this way, extend to polycyclic scene.
Those skilled in the art can be carry out various modifications to the embodiment of the present invention and modification, if these modifications and change
For type within the scope of the claims in the present invention and its equivalent technologies, then these modifications and variations are also in protection scope of the present invention
Within.
The prior art that the content not being described in detail in specification is known to the skilled person.
Claims (10)
1. a kind of polycyclic relaying configuration method of PTN looped network protections, which is characterized in that include the following steps：
To increase the intersecting ring configuration of respective entries in each ring of intersecting ring relationship newly, which matches
It sets, includes in every configuration：Intersecting ring KEY values, crossed node ID, intersecting ring set of tags, intersecting ring KYE values are corresponding phases
The configuration index of cross ring, crossed node ID is number of the crossed node in ring, after intersecting ring set of tags is the ring under this ring
Into one group of ring label of the traffic assignments of intersecting ring；
When LSP binds three or more rings, three retaining ring KEY values are configured for each LSP retaining rings：Upper words ring KEY values, this ring KEY
Value, lower words ring KEY values, ring KEY values are a kind of global index's values of ring configuration, and upper words ring is passed through before LSP enters this ring
One ring, this ring are this current rings, and lower words ring is the ring for continuing binding after LSP goes out ring from this ring.
2. the polycyclic relaying configuration method of PTN looped network protections as described in claim 1, it is characterised in that：The LSP bindings three
It is further comprising the steps of after a above ring：
Pretection switch is carried out to ring interior joint, detailed process is：
At the upper words node of upper words ring, LSP enters upper words ring in the node, stamps " above talking about ring " intersecting ring mark corresponding with this ring
Label, it is intersecting ring set of tags to switch object, switch principle be G.8132 in monocycle switch principle；
At the upper words node of this ring, LSP words ring intersecting ring labels corresponding with this ring in the pop-up of this node carry out LSP label
After exchange, this ring intersecting ring label corresponding with lower words ring is stamped；It is the group that monocycle switches and intersects ring switching to switch principle
It closes；
With another crossed node that node symmetrically upper words ring and this ring are talked about on this ring, LSP in the node pop-up words ring and
The corresponding intersecting ring label of this ring stamps this ring intersecting ring label corresponding with lower words ring after carrying out LSP label exchange；?
It changes the monocycle that principle is intersecting ring set of tags and switches principle；
At the upper words node of lower words ring, LSP pops up this ring intersecting ring label corresponding with lower words ring in this node, carries out LSP marks
After label exchange, the local ring label of lower words ring is stamped；It is the combination that monocycle switches and intersects ring switching to switch principle；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, LSP pops up this ring under in the node
The corresponding intersecting ring label of ring is talked about, after carrying out LSP label exchange, stamps the local ring label of lower words ring；Switching principle is
G.8132 the monocycle in switches principle；
The node of the non-ring of words up and down on the ring that business is passed through, the node are not present retaining ring relationship, switch principle and follow G.8132
In monocycle switch principle.
3. the polycyclic relaying configuration method of PTN looped network protections as claimed in claim 2, it is characterised in that：Three retaining rings
It is not 0 there are this ring KEY values of the LSP of retaining ring relationship, upper words ring KEY values and lower words ring KEY values are according to practical feelings in KEY values
Condition is zero or non-zero.
4. the polycyclic relaying configuration method of PTN looped network protections as claimed in claim 3, it is characterised in that：The LSP bindings three
It is further comprising the steps of when a above ring：At another crossed node of intersecting ring, the LSP of copy crossed node matches confidence
The LSP next-hops of breath, duplication are this crossed node, realize two intersections and the mutual protection of node.
5. the polycyclic relaying configuration method of PTN looped network protections as claimed in claim 4, it is characterised in that：The upper words ring
At upper words node, upper words ring KEY values are zero, this ring KEY values and lower words ring KEY values are not zero；
At the upper words node of this ring, that is, at the lower words node of upper words ring, that is, at the crossed node of upper words ring and this ring, this
Upper words ring KEY values, this ring KEY values, lower words ring KEY values on node are not zero；
Another crossed node of ring and this ring is symmetrically above talked about with words node on this ring, there is the LSP replicated on the node, again
The upper words ring KEY values of the LSP of system are zero, this ring KEY values are consistent with before duplication with lower words ring KEY values；
At the upper words node of lower words ring, that is, at the lower words node of this ring, that is, at the crossed node of this ring and lower words ring, this
The upper words ring KEY values and this ring KEY values of node are not zero, and lower words ring KEY values are zero；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, there are the duplications of LSP for the node, replicate
This ring KEY values of LSP be not zero, upper words ring KEY values and lower words ring KEY values are 0.
6. a kind of polycyclic relaying configuration system of PTN looped network protections, which is characterized in that including the first dispensing unit, the second configuration
Unit, wherein：
First dispensing unit is used for：To increase the intersecting ring configuration of respective entries in each ring of intersecting ring relationship newly, this is configured to
The son of ring configured in one piece configures, and includes in every configuration：Intersecting ring KEY values, crossed node ID, intersecting ring set of tags, intersection
Ring KYE values are the configuration indexes of corresponding intersecting ring, and crossed node ID is number of the crossed node in ring, intersecting ring set of tags
For after the ring under this ring enter intersecting ring traffic assignments one group of ring label；
Second dispensing unit is used for：When LSP binds three or more rings, three retaining ring KEY values are configured for each LSP retaining rings：On
Talk about ring KEY values, this ring KEY values, lower words ring KEY values, ring KEY values are a kind of global index's values that ring configures, upper words ring be LSP into
Enter the ring passed through before this ring, this ring is this current ring, and lower words ring is to continue binding after LSP goes out ring from this ring
Ring.
7. the polycyclic relaying configuration system of PTN looped network protections as claimed in claim 6, it is characterised in that：The system further includes
Pretection switch unit, the pretection switch unit are used for：
After LSP binds three or more rings, pretection switch is carried out to ring interior joint, detailed process is：
At the upper words node of upper words ring, LSP enters upper words ring in the node, stamps " above talking about ring " intersecting ring mark corresponding with this ring
Label, it is intersecting ring set of tags to switch object, switch principle be G.8132 in monocycle switch principle；
At the upper words node of this ring, LSP words ring intersecting ring labels corresponding with this ring in the pop-up of this node carry out LSP label
After exchange, this ring intersecting ring label corresponding with lower words ring is stamped；It is the group that monocycle switches and intersects ring switching to switch principle
It closes；
With another crossed node that node symmetrically upper words ring and this ring are talked about on this ring, LSP in the node pop-up words ring and
The corresponding intersecting ring label of this ring stamps this ring intersecting ring label corresponding with lower words ring after carrying out LSP label exchange；?
It changes the monocycle that principle is intersecting ring set of tags and switches principle；
At the upper words node of lower words ring, LSP pops up this ring intersecting ring label corresponding with lower words ring in this node, carries out LSP marks
After label exchange, the local ring label of lower words ring is stamped；It is the combination that monocycle switches and intersects ring switching to switch principle；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, LSP pops up this ring under in the node
The corresponding intersecting ring label of ring is talked about, after carrying out LSP label exchange, stamps the local ring label of lower words ring；Switching principle is
G.8132 the monocycle in switches principle；
The node of the non-ring of words up and down on the ring that business is passed through, the node are not present retaining ring relationship, switch principle and follow G.8132
In monocycle switch principle.
8. the polycyclic relaying configuration system of PTN looped network protections as claimed in claim 7, it is characterised in that：Three retaining rings
It is not 0 there are this ring KEY values of the LSP of retaining ring relationship, upper words ring KEY values and lower words ring KEY values are according to practical feelings in KEY values
Condition is zero or non-zero.
9. the polycyclic relaying configuration system of PTN looped network protections as claimed in claim 8, it is characterised in that：The system further includes
LSP configures copied cells, and the LSP configurations copied cells are used for：When LSP binds three or more rings, in another phase of intersecting ring
It hands at node, the LSP configuration informations of copy crossed node, the LSP next-hops of duplication are this crossed node, realize two intersections
And the mutual protection of node.
10. the polycyclic relaying configuration system of PTN looped network protections as claimed in claim 9, it is characterised in that：The upper words ring
At upper words node, upper words ring KEY values are zero, this ring KEY values and lower words ring KEY values are not zero；
At the upper words node of this ring, that is, at the lower words node of upper words ring, that is, at the crossed node of upper words ring and this ring, this
Upper words ring KEY values, this ring KEY values, lower words ring KEY values on node are not zero；
Another crossed node of ring and this ring is symmetrically above talked about with words node on this ring, there is the LSP replicated on the node, again
The upper words ring KEY values of the LSP of system are zero, this ring KEY values are consistent with before duplication with lower words ring KEY values；
At the upper words node of lower words ring, that is, at the lower words node of this ring, that is, at the crossed node of this ring and lower words ring, this
The upper words ring KEY values and this ring KEY values of node are not zero, and lower words ring KEY values are zero；
With another crossed node of this ring of words point symmetry and lower words ring on lower words ring, there are the duplications of LSP for the node, replicate
This ring KEY values of LSP be not zero, upper words ring KEY values and lower words ring KEY values are 0.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035712A (en) * | 2009-09-29 | 2011-04-27 | 华为技术有限公司 | Multiprotocol label exchanged ring network protection method, device and system |
| CN103684951A (en) * | 2012-08-31 | 2014-03-26 | 中国移动通信集团公司 | Ring network protection method and system |
| US20150381420A1 (en) * | 2014-06-30 | 2015-12-31 | Juniper Networks, Inc. | Path protection for ring-based multi-protocol label switched paths |
| CN105915371A (en) * | 2016-04-07 | 2016-08-31 | 烽火通信科技股份有限公司 | PTN ring network protection double-ring escape realization method and system |
-
2018
- 2018-05-18 CN CN201810481413.4A patent/CN108768816B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035712A (en) * | 2009-09-29 | 2011-04-27 | 华为技术有限公司 | Multiprotocol label exchanged ring network protection method, device and system |
| CN103684951A (en) * | 2012-08-31 | 2014-03-26 | 中国移动通信集团公司 | Ring network protection method and system |
| US20150381420A1 (en) * | 2014-06-30 | 2015-12-31 | Juniper Networks, Inc. | Path protection for ring-based multi-protocol label switched paths |
| CN105915371A (en) * | 2016-04-07 | 2016-08-31 | 烽火通信科技股份有限公司 | PTN ring network protection double-ring escape realization method and system |
Non-Patent Citations (1)
| Title |
|---|
| 洪菁岑: ""PTN设备环网保护机制的研究与实现"", 《中国优秀硕士学位论文全文数据库-信息科技辑》 * |
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