CN103746891B - A kind of guard method of looped network access service, apparatus and system - Google Patents
A kind of guard method of looped network access service, apparatus and system Download PDFInfo
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- CN103746891B CN103746891B CN201310723758.3A CN201310723758A CN103746891B CN 103746891 B CN103746891 B CN 103746891B CN 201310723758 A CN201310723758 A CN 201310723758A CN 103746891 B CN103746891 B CN 103746891B
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Abstract
The embodiment of the invention discloses a kind of guard method of looped network access service, apparatus and system, the realization of wherein method includes：First node receives service message；First node determines whether itself is that the service message goes out link point, if be last node in current forwarding channel；If it is determined that first node goes out link point for the service message, and be not last node in current forwarding channel, then replicate the next node that the service message is transmitted to current forwarding channel, and the service message decapsulate to obtain user data, to user data described in target node.The dual-homing protection of looped network protection and network side is same level in this embodiment scheme（All it is looped network level）, the problem of therefore providing a kind of protection scheme of new looped network access service, and solve because looped network protection and dual-homing protection are in protection superposition caused by different levels are realized and the problem of protect overlapping, and waste PW OAM and APS resources.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of guard method of looped network access service, apparatus and system.
Background technology
Requirement with operator to network reliability, redundancy ability is stepped up, and existing network is for looped network protection and dual homed
The demand of protection is all the more strong.
Current looped network protection and dual-homing protection scheme have three kinds, specific as follows：
Option A, only exist looped network protection.
Option b, only exist dual-homing protection（I.e.：The protection of dual-homed access service）.
Scheme C, while there is looped network protection and dual-homing protection.
There was only the looped network protection of network side in option A, business side is singly to return form, it is impossible to ensure the protection of business side；Side
Case B is dual-homing protection scene, existing network side protection, also there is business side protection, but network side is only supported to Single Point of Faliure
Effectively protection；Although scheme C has been provided simultaneously with network side and business side protection, can support effective guarantor to two point or multipoint fault
Shield, but looped network protection and dual-homing protection are realized respectively in Internet and operation layer respectively, namely：Looped network protection and dual-homing protection
Different levels are realized, therefore looped network protection and dual-homing protection are superpositions, and the network side protection of dual-homing protection and business are one
One is corresponding, there is the overlapping situation of protection.The dual homed guarantor of a network side need to be configured by often configuring a business in dual-homed node
Shield, takes 4 pseudo-wires（Pseudo Wire, PW）Operation management maintainance（Operation,Administration and
Maintenance, OAM）Resource and 1 APS agreement（Automatic Protection Switching, APS）
Resource, therefore extra PW OAM and APS resources can be taken.
Based on Such analysis, there is the scheme of looped network protection and dual-homing protection, looped network protection and dual-homing protection simultaneously at present
It is to be superimposed and exist the problem of protecting overlapping, wastes PW OAM and APS resources.
The content of the invention
The embodiments of the invention provide a kind of guard method of looped network access service, apparatus and system, for providing one kind
The protection scheme of new looped network access service, and the problem of protection is superimposed and protects overlapping is solved, and waste PW OAM and APS
The problem of resource.
On the one hand the embodiment of the present invention provides a kind of guard method of looped network access service, including：
First node receives service message；
First node determines whether itself is that the service message goes out link point, if be in current forwarding channel most
Latter node；
If it is determined that first node goes out link point for the service message, and it is not last in current forwarding channel
Node, then replicate the next node that the service message is transmitted to current forwarding channel, and the service message is carried out
Decapsulation obtains user data, to user data described in target node, and the network node is the node outside looped network.
With reference to the implementation of one side, in the first possible implementation, methods described, in addition to：
If it is determined that first node goes out link point for the service message, and it is last section in current forwarding channel
Point, then to the service message decapsulate obtaining user data, to user data described in target node.
It is possible at second with reference to the first possible implementation of the implementation of one side, or one side
In implementation, the network node has two, described to include to user data described in target node：
The user data is forwarded respectively to two network nodes.
The aspect of the embodiment of the present invention two provides a kind of guard method of looped network access service, including：
Section Point receives user data；
Section Point is that the user data encapsulated tags obtain service message and configure forwarding channel；The forwarding channel
Indicate routing direction and two on the routing direction go out link point；
Section Point forwards the service message to the main channel that forwarding channel is indicated；
If Section Point detects main channel, direction is broken down, and is performed and is switched according to APS agreement, to
Alternate channel forwards the service message.
With reference to the implementation of two aspects, in the first possible implementation, methods described, in addition to：
During the service message is forwarded to alternate channel, if detecting main channel recovers normal, to main channel
Forward the service message.
The aspect of the embodiment of the present invention three provides a kind of guard method of looped network access service, including：
Network node determines whether master port and standby port communication are normal, and the master port is the network node and industry
The port that first on main channel that the forwarding channel of business message is indicated goes out the communication of link point；The standby port is the net
Second on main channel that network node is indicated with the forwarding channel of service message goes out the port that link point communicates；
If main side port communications are normal, the user data for going out link point from looped network is received from master port；
If master port communication failure, and standby port is normal, then received from standby port and go out link point from looped network
User data.
With reference to the implementation of three aspects, in the first possible implementation, described received from master port comes from ring
The user data for going out link point of net includes：
Open master port and receive the user data from master port, close standby port；Or, receive from master port
User data, and receive the user data from standby port；Then the user data from standby port is deleted；
It is described to include from the user data that goes out link point of the standby port reception from looped network：
Open standby port and receive the user data from standby port, close master port；Or, receive and come from master port
User data, and receive the user data from standby port；Then the user data from master port is deleted.
With reference to the implementation of three aspects, in second of possible implementation, ring is come from being received from standby port
That nets goes out during the user data of link point, and methods described also includes：
If it is normal to detect master port communication recovery, continue to receive the use for going out link point from looped network from standby port
User data, or, it is switched to from master port and receives the user data for going out link point from looped network.
The aspect of the embodiment of the present invention four provides a kind of node of looped network, including：
Message receiving unit, for receiving service message；
Node determining unit, for determining whether itself is that the service message goes out link point, if for current forwarding
Last node in passage；
Forwarding control subsystem, if determining to go out link point as the service message certainly for the node determining unit,
And be not last node in current forwarding channel, then replicate the service message and be transmitted to the next of current forwarding channel
Individual node；And the service message decapsulate to obtain user data, to user data described in target node.
With reference to the implementation of four aspects, in the first possible implementation, the forwarding control subsystem is additionally operable to
If the node determining unit determines that first node goes out link point for the service message, and be in current forwarding channel most
Latter node, then to the service message decapsulate obtaining user data, to user data described in target node.
It is possible at second with reference to the first possible implementation of the implementation of four aspects, or four aspects
In implementation, the network node has two, and the forwarding control subsystem is described for being forwarded respectively to two network nodes
User data.
The aspect of the embodiment of the present invention five provides a kind of node of looped network, including：
Data receipt unit, for receiving user data；
Encapsulation unit, the user data encapsulated tags for being received for the data receipt unit obtain service message and matched somebody with somebody
Put forwarding channel；The forwarding channel indicates routing direction and two on the routing direction go out link point；
Retransmission unit, the main channel for being indicated to forwarding channel forwards the service message that the encapsulation unit is obtained；If
Section Point detects main channel direction and broken down, then performs and switch according to APS agreement, turn to alternate channel
Send out service message described.
With reference to five aspect implementation, in the first possible implementation, the retransmission unit, be additionally operable to
Alternate channel is forwarded during the service message, if detecting main channel recovers normal, the business is forwarded to main channel
Message.
The aspect of the embodiment of the present invention six provides a kind of network node, and the network node is the node outside looped network, and it is special
Levy and be, including：
Port determining unit, for determining whether master port and standby port communication are normal, the master port is the net
First on main channel that network node is indicated with the forwarding channel of service message goes out the port that link point communicates；The standby end
Second on main channel that mouth indicates for the network node with the forwarding channel of service message goes out the port that link point communicates；
Data cell is received, if normal for main side port communications, received from master port and goes out link point from looped network
User data；If master port communication failure, and standby port is normal, then received from standby port and go out link point from looped network
User data.
With reference to the implementation of six aspects, in the first possible implementation, the reception data cell, including：
Port control unit and the first receiving unit, or, the second receiving unit and data selection unit；
The Port control unit, if normal for main side port communications, open master port and closes standby port；If main
Port communication failure, and standby port is normal, then closes master port and open standby port；
First receiving unit, for receiving the user data from master port from the master port of unlatching；Or, from opening
The standby port opened receives the user data from standby port；
Second receiving unit, for receiving the user data from master port, and receives the use from standby port
User data；
The data selection unit, if for master port communication failure, and standby port is normal, then is received described second
The user data from master port that unit is received is deleted；If main side port communications are normal, second receiving unit is received
User data from standby port delete.
With reference to the implementation of six aspects, in second of possible implementation, the reception data cell is additionally operable to
Going out during the user data of link point from looped network is being received from standby port, if detecting master port communication recovery just
Often, then continue to receive the user data for going out link point from looped network from standby port, or, it is switched to from master port reception
From the user data for going out link point of looped network.
The aspect of the embodiment of the present invention seven provides a kind of system of the protection of looped network access service, including：Include at least three
In the looped network of individual node, looped network comprising one enter link point, two go out link point；Network node, the network node is looped network
Outer node, it is described enter link point be looped network provided in an embodiment of the present invention node, it is described go out link point for the present invention implement
The node for the looped network that example is provided, the network node is network node provided in an embodiment of the present invention.
With reference to the implementation of seven aspects, in second of possible implementation, the network node has two；It is described
Go out link point for network node provided in an embodiment of the present invention.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：Quilt in the forwarding channel of the program
Be configured with more than one and go out link point, be not last node node will duplication service message continue on forwarding channel
Forwarded；So on this forwarding channel, each go out link point and can unseal service message to forward data to network control
Device processed.It follows that the dual-homing protection of looped network protection and network side is same level in this embodiment scheme（All it is looped network level
's）, therefore provide a kind of protection scheme of new looped network access service, and solve because looped network protection and dual-homing protection are in difference
The problem of protection is superimposed and protects overlapping caused by level is realized, and the problem of waste PW OAM and APS resources.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Figure 1A is present invention method schematic flow sheet；
Figure 1B is present invention method schematic flow sheet；
Fig. 1 C are present invention method schematic flow sheet；
Fig. 2 is that looped network protection service message of the embodiment of the present invention flows to schematic diagram；
Fig. 3 is that looped network protection service message of the embodiment of the present invention flows to schematic diagram；
Fig. 4 is that looped network protection service message of the embodiment of the present invention flows to schematic diagram；
Fig. 5 is that looped network protection service message of the embodiment of the present invention flows to schematic diagram；
Fig. 6 is that looped network protection service message of the embodiment of the present invention flows to schematic diagram；
Fig. 7 is that looped network protection service message of the embodiment of the present invention flows to schematic diagram；
Fig. 8 is that looped network protection service message of the embodiment of the present invention flows to schematic diagram；
Fig. 9 is the node structure schematic diagram of looped network of the embodiment of the present invention；
Figure 10 is the node structure schematic diagram of looped network of the embodiment of the present invention；
Figure 11 is network node structure schematic diagram of the embodiment of the present invention；
Figure 12 is network node structure schematic diagram of the embodiment of the present invention；
Figure 13 is network node structure schematic diagram of the embodiment of the present invention；
Figure 14 is looped network node structural representation of the embodiment of the present invention；
Figure 15 is looped network node structural representation of the embodiment of the present invention；
Figure 16 is network node structure schematic diagram of the embodiment of the present invention；
Figure 17 is system structure diagram of the embodiment of the present invention.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step it is described in detail, it is clear that described embodiment is only embodiment of the invention a part of, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
The embodiments of the invention provide a kind of guard method of looped network access service, as shown in Figure 1A, including：
101A：First node receives service message；
In order to distinguish the node on looped network, " first " and " second " has been used to make a distinction node, " first " and "
Two " are only used for distinguishing different types of node, should not be construed as other technologies implication.Wherein first node is link point, the
Two nodes are into link point.First node receive service message can be using looped network related protocol forwarding come business report
Text, subsequent embodiment will be described in more detail.
102A：First node determines whether itself is that above-mentioned service message goes out link point, if be current forwarding channel
In last node；
In this step, determine whether link point, can configure and determine according to the passage of service message, can follow
The regulation of the related protocol of looped network protection, will be described in more detail in subsequent embodiment.Above-mentioned current forwarding channel is
The corresponding forwarding channel of above-mentioned service message.At least two are configured with above-mentioned forwarding channel and goes out link point.Forwarding channel is matched somebody with somebody
Confidence breath indicates forward-path of the service message on looped network, such as will in the configuration information of the forwarding channel shown in Fig. 2
Following information can be configured：Service message has node 1,2 and 3 by node；And service message after ring on node 1 by
Node is followed successively by：1st, 2 and 3, and configuration node 3 is the information for link point.So node 2 can be according to forwarding channel
Configuration information determines that forwarding channel also has descendant node, namely：Also need to continue to forward；And node 3 will be logical according to forwarding
The configuration information in road is determined from as going out link point, and forwarding channel does not have descendant node, i.e.,：Node 3 is matched somebody with somebody for forwarding channel
Last node put.
103A：If it is determined that first node goes out link point for above-mentioned service message, and be not in current forwarding channel most
Latter node, then replicate the next node that above-mentioned service message is transmitted to current forwarding channel, and to above-mentioned business report
Text decapsulate obtaining user data, and to the above-mentioned user data of target node, above-mentioned network node is the section outside looped network
Point.
Node outside looped network can be the destination node of user data that the decapsulation of link point obtains and go out link point it
Between path on first node.What this specific network node is, is not that the embodiment of the present invention is of interest.Rear
Will be with network node in continuous embodiment（Radio Network Controller, RNC）Carried out as the example of the network node
Explanation.
More than one is configured in the forwarding channel of scheme of the embodiment of the present invention and goes out link point, is not last node
Node will duplication service message continue on forwarding channel and forwarded；So on this forwarding channel, each go out ring
Node can unseal service message and forward data to network controller.It follows that in this embodiment scheme looped network protection and
The dual-homing protection of network side is same level（All it is looped network level）, therefore a kind of protection of new looped network access service is provided
Scheme, and the problem of protection is superimposed and protects overlapping is solved, PW OAM and APS resources can be saved.
Further, the first node in the present embodiment is also used as forwarding channel last as link point is gone out
Individual node is used, then the above method, in addition to：
If it is determined that first node goes out link point for above-mentioned service message, and it is last section in current forwarding channel
Point, then to above-mentioned service message decapsulate obtaining user data, to the above-mentioned user data of target node.
The embodiment of the present invention can also be in User Network Interface（User-Network Interface, UNI）Side configuration is double
Ownership protection, then above-mentioned network node has two, above-mentioned to include to the above-mentioned user data of target node：To two networks
Node forwards above-mentioned user data respectively.
The embodiment of the present invention additionally provides the guard method of another looped network access service, as shown in Figure 1B, including：
101B：Section Point receives user data；
102B：Section Point is that above-mentioned user data encapsulated tags obtain service message and configure forwarding channel；Above-mentioned turn
Hair passage indicates routing direction and two on above-mentioned routing direction go out link point；
103B：Section Point forwards above-mentioned service message to the main channel that forwarding channel is indicated；If Section Point is detected
Main channel direction is broken down, then performs and switch according to APS agreement, above-mentioned service message is forwarded to alternate channel.
More than one is configured in the forwarding channel of scheme of the embodiment of the present invention and goes out link point, is not last node
Node will duplication service message continue on forwarding channel and forwarded；So on this forwarding channel, each go out ring
Node can unseal service message and forward data to network controller.It follows that in this embodiment scheme looped network protection and
The dual-homing protection of network side is same level（All it is looped network level）, therefore a kind of protection of new looped network access service is provided
Scheme, and the problem of protection is superimposed and protects overlapping is solved, PW OAM and APS resources can be saved.
Further, the embodiment of the present invention additionally provides extensive using main channel during alternate channel forwarding service message
Multiple processing scheme, it is specific as follows：The above method, in addition to：
During above-mentioned service message is forwarded to alternate channel, if detecting main channel recovers normal, to main channel
Forward above-mentioned service message.
The embodiment of the present invention additionally provides the guard method of another looped network access service, as shown in Figure 1 C, including：
101C：Network node determines whether master port and standby port communication are normal, and above-mentioned master port is above-mentioned network section
First on main channel that point is indicated with the forwarding channel of service message goes out the port that link point communicates；Above-mentioned standby port is
Second on main channel that above-mentioned network node is indicated with the forwarding channel of service message goes out the port that link point communicates；
102C：If main side port communications are normal, the user data for going out link point from looped network is received from master port；If main
Port communication failure, and standby port is normal, then receives the user data for going out link point from looped network from standby port.
More than one is configured in the forwarding channel of scheme of the embodiment of the present invention and goes out link point, is not last node
Node will duplication service message continue on forwarding channel and forwarded；So on this forwarding channel, each go out ring
Node can unseal service message and forward data to network controller.Network controller goes out the data of link point transmission to two
Carry out choosing receipts.It follows that the dual-homing protection of looped network protection and network side is same level in this embodiment scheme（All it is looped network
Level）, therefore provide a kind of protection scheme of new looped network access service, and solve that protection superposition is overlapping with protecting to ask
Topic, can save PW OAM and APS resources.
Alternatively, it is above-mentioned to include from the user data that goes out link point of the master port reception from looped network：Master port is opened to connect
The user data from master port is received, standby port is closed；Or, the user data from master port is received, and reception comes from
The user data of standby port；Then the user data from standby port is deleted；
It is above-mentioned to include from the user data that goes out link point of the standby port reception from looped network：Open standby port and receive
From the user data of standby port, master port is closed；Or, the user data from master port is received, and receive from standby
The user data of port；Then the user data from master port is deleted.
Further, the embodiment of the present invention is additionally provided during choosing receives user data, and scheme is switched in fault recovery, tool
Body is as follows：Going out during the user data of link point from looped network is being received from standby port, in addition to：If detecting main side
Port communications recover normal, then continue to receive the user data for going out link point from looped network from standby port, or, be switched to from
Master port receives the user data for going out link point from looped network.
Following examples will be with based on multiprotocol label switching（Multi Protocol Label Switching, MPLS）
The dual-homed access service of looped network protection exemplified by illustrate.The present embodiment, realizes that 1 MPLS looped network protection of configuration supplies N bar industry
The device level redundancy backup of business access, while saving the OAM additionally taken due to protection superposition（Operation,
Administration and Maintenance, operation management maintainance）And APS（Automatic Protection
Switching, APS agreement）Resource.In the present embodiment, network node is with radio network controller（Radio
Network Controller, RNC）Exemplified by.
The main flow of the embodiment of the present invention is as follows：Based on business 2 sub- process descriptions of trend point：First, assume business from
Access side joint enters backward radio network controller（Radio Network Controller, RNC）Send, flow is：1st, it is based on
Looped network protection is forwarded；2nd, configure looped network protection Virtual Channel and replicate and forward by Virtual Channel；3rd, dual-homed node traffic forwarding；Should
Flow is the main point of application of the present invention.2nd, the opposite direction transmitting procedure of business is as follows：Business from RNC pass back to access side it
Flow is afterwards：After dual homed node access service, carry out being forwarded to access side according to looped network forwarding standard, the embodiment of the present invention is to this
It is not detailed.
Following examples put up with above business from access side joint enter after enter respectively in terms of three into the flow that RNC is sent
Row describes in detail as follows：
First, forwarded based on looped network protection：
As shown in Fig. 2 the numbering 1~5 that circle is expressed as in looped network node, circle represents the sequence number of node, Fig. 2 is shown
The looped network of 5 node compositions.Fig. 2 is shown, and configures the looped network protection of 5 nodes, can be first by the way of artificial every
Individual node presses same order（As clockwise）Configure loopful nodal information（RingMap）, such as：Node 1 specifies 1,2,3,4,
5, node 2 specifies 2,3,4,5,1, by that analogy, and Fig. 3~Fig. 8 also uses the program in subsequent embodiment, therefore in subsequent implementation
No longer repeated one by one in example.The direction of arrow shown in Fig. 2 is moved towards for business, i.e. the routing direction of service message.Node 1 is into ring
Node, node 3 is link point.
During normal condition（I.e. looped network normal non-fault when）, it is illustrated in figure 3 the looped network protection forwarding process of multi-tag, base
The business trend configured in Fig. 2, user data（User Data）Enter ingress 1 from ring on looped network node 1, looped network node 1 is
User Data encapsulation PW, gap marker（tunnel）, looped network label（Spr label3）As service message to looped network node 2
Forwarding, carries out looped network label exchange in node 2, is then forwarded to looped network node 3, and Fig. 3 interior joints 3 are lower circling point, when message is arrived
Up to after node 3, looped network label, tunnel labels, pw labels are removed successively, are recovered User Data and are continued downward forwarding.Fig. 2 institutes
Label1~the label4 shown is ring memberses mark, is not offered as label value.In looped network protection, label indicates the object
Forward-path, pw tag representations customer service trend, tunnel tag representations are carried on the pw pseudo-wires trend on tunnel, ring mark
Label represent the trend for the tunnel being carried on ring.
If being broken down between the node 2 and node 3 on looped network, looped network protection will switch protection passage, as shown in Figure 4：
Service message walks to protect passage to be forwarded to node 3, and message encapsulation change is related in service message repeating process.Enter ring in node 1
Service message, forwarded from node 1 to node 5, node 5 carry out ring Tag switching, then forwarded to looped network node 4, looped network section
Point is carried out looped network label exchange and forwarded with backward looped network node 3, and Fig. 4 interior joints 3 are lower circling point, after message reaches node 3, according to
Secondary dismounting looped network label, tunnel labels, pw labels, recover User Data and continue downward forwarding.
Above example describes the label switching label encapsulation forwarded based on looped network protection in scheme, forwarding process
To follow the regulation of looped network protection related protocol.Tag switching is provided also in compliance with looped network protection related protocol in subsequent embodiment,
No longer implementing for Tag switching is illustrated one by one in formality embodiment Fig. 3~Fig. 8.
2nd, configure looped network protection Virtual Channel and replicate and forward by Virtual Channel, dual-homed node traffic forwarding：
In the present embodiment, configuration looped network protection Virtual Channel is specially：Configure ring dual homed Virtual Channel；Replicate and turn by Virtual Channel
Hair, and the dual-homed node traffic forwarding of ring.It is illustrated in fig. 5 shown below, basic network configuration is as follows：
A, configuration node 3 and node 4 are the dual-homed node of ring；I.e.：Node 3 and node 4 are that service message goes out link
Point（Also referred to as descend link point）.
B, it is configured to the corresponding void of SPR_VP_W in the ring dual homed of the dual-homed node 3 of ring work Virtual Channel SPR_VP_W, Fig. 5
The line direction of arrow.
C, ring dual homed work Virtual Channel arrive node 3 clockwise, are then extend to two lower circling points of the passage of node 4, i.e., one.
D, it is configured to the corresponding void of SPR_VP_P in ring dual-homing protection the Virtual Channel SPR_VP_P, Fig. 5 of the dual-homed node 4 of ring
The line direction of arrow.
E, ring dual-homing protection Virtual Channel arrive node 4 counterclockwise, are then extend to two lower circling points of the passage of node 3, i.e., one.
F, configuration UNI sides dual-homing protection（It is optional）；UNI sides is singly return in Fig. 5, i.e., one RNC（RNC_1）.
G, RNC node must be that protection is received in active and standby choosing.Because the dual-homed node 3 of ring and node 4 all send User to RNC
Data, RNC needs progress to select receipts to act, it is to avoid business is double to be received.
In above allocation plan, from the configuration requirement of above b, d：Looped network protection and network in this embodiment scheme
The dual-homing protection of side is same level（All it is looped network level）, and looped network protection and dual-homing protection in background technology
Tunnel APS, PW APS are different levels, are superpositions.
Configure, the forwarding process with regard to service message under various states is described as follows based on more than below：
1st, during normal condition, the routing direction of service message solid arrow direction as shown in Figure 5 is specific as follows：User
Data（User Data）Enter ingress 1 from ring on looped network node 1, looped network node 1 is User Data encapsulation pw, tunnel, ring
After dual homed Virtual Channel label, walk ring dual homed work Virtual Channel SPR_VP_W as service message and forwarded to looped network node 2, in node
2 carry out ring dual homed Virtual Channel Tag switching, then walk ring dual homed work Virtual Channel SPR_VP_W and are forwarded to looped network node 3, in Fig. 5
Node 3 is the dual-homed node of ring.After message reaches node 3, node 3 replicates a service message, swaps ring dual homed empty
The extension passage that ring dual homed work Virtual Channel SPR_VP_W is walked after channel labels is transmitted to the dual-homed peer node 4 of ring, then
Ring dual homed Virtual Channel label, tunnel, pw label are removed successively, are recovered User Data and are continued to forward to RNC_1.Meanwhile, ring is double
Home node 4 is received after the service message forwarded from ring dual homed work Virtual Channel SPR_VP_W extension passages, is removed successively
Ring dual homed Virtual Channel label, tunnel, pw label, recover User Data and continue to forward to RNC_1.That is the dual-homed He of node 3 of ring
Node 4 all sends User Data, RNC_1 equipment to RNC needs progress to select receipts to act, it is to avoid business is double to be received, it is assumed that node is received in choosing
3 messages sent.As shown in Figure 5.
2nd, when being broken down between node on the ring 2 and node 3, the routing direction of service message solid line arrow as shown in Figure 6
Head direction, it is specific as follows：User Data are from ring on node 1, and node 1, which is User Data encapsulation pw, tunnel, ring dual homed is empty leads to
Ring dual-homing protection Virtual Channel SPR_VP_P is walked after road label to forward to looped network node 5, and ring dual homed Virtual Channel label is carried out in node 5
Exchange, then walk ring dual-homing protection Virtual Channel SPR_VP_P and forwarded to looped network node 4, figure interior joint 4 is the dual-homed node of ring.When
Message is reached after node 4, and ring dual-homing protection Virtual Channel SPR_VP_P is walked after replicating a MESSAGE EXCHANGE ring dual homed Virtual Channel label
Extension passage is transmitted to the dual-homed peer node 3 of ring, and ring dual homed Virtual Channel label, tunnel, pw label are then removed successively,
Recover User Data to continue to forward to RNC_1.Meanwhile, the dual-homed node 3 of ring is received from ring dual-homing protection Virtual Channel SPR_VP_P
After the message that extension passage is forwarded, ring dual homed Virtual Channel label, tunnel, pw label are removed successively, recover User Data
Continue to forward to RNC.I.e. the dual-homed node 4 of ring and node 3 all send User Data, RNC_1 equipment to RNC_1 and carry out choosing receipts
The message that node 3 is sent is received in action, choosing, it is to avoid business is double to be received, while being avoided that service disconnection.
3rd, when the link between node on the ring 3 and RNC_1 breaks down, the routing direction of service message is as shown in Figure 7
Solid arrow direction, it is specific as follows：The forwarding of network side looped network is similar with forwarding under normal circumstances, differs only in node 3 and forwards
User Data RNC_1 can not receive, the present embodiment is repeated no more to this flow.In business side, RNC_1 detects link
Failure triggering is switched, now RNC_1 is switched to standby port and selects the business that node 4 is sent of receiving, it is to avoid service disconnection.Can from above
Know：Service message is that node 3 is copied to node 4 by ring dual homed Virtual Channel, therefore is related to service path switching.In Fig. 7 institutes
The business side shown has RNC_1 and RNC_2, and because the link between node 3 and RNC_2 is normal, therefore RNC_2 does not switch, RNC_2
The business that node 3 is sent can be received, the business that node 4 is sent can be also received, the business for receiving original route can be still selected, because
This is not related to service path switching.It can thus be appreciated that a MPLS ring in the embodiment of the present invention is available for N（N≥2）Individual service access
And the conclusion that business is independent of each other.
4th, when node failure occurs for the dual-homed node 3 of ring, the routing direction of service message solid arrow as shown in Figure 8
Direction, it is specific as follows：Network side is forwarded and network side failure（Shown in Fig. 6）In the case of forward similar, repeat no more；Difference is
Node 3 will be unable to receive message and E-Packet to TNC_1.Link failure triggering is detected in business side RNC_1 to switch, now
RNC is switched to standby port and selects the business that node 4 is sent of receiving, it is to avoid service disconnection.Forwarding process is as shown below.Explanation：By
In the whole node failure of node 3, therefore node 3 can not receive the report sent by node 4 by the ring dual-homing protection Virtual Channel of extension
Text.
It is described above the idiographic flow by Virtual Channel duplication and forwarding and the dual-homed node traffic forwarding of ring, the present embodiment
Additionally provide business side and select being implemented as follows for debit's case：
1st, when network side fault recovery, business side of the embodiment of the present invention selects debit's formula constant, and network side can be according to ring
Net protective standard is recovered.
In the present embodiment, if configuration looped network protection is recovery formula, when looped network protection switchback is to during work, business is by just
Reason condition is forwarded, and is walked ring dual homed work Virtual Channel and is sent to RNC, the dual-homed node 3 of ring carries out copy packet and is sent to peer node
4, and it is transmitted to RNC.Peer node 4 is received after message, also issues RNC, and RNC carries out choosing receipts, is related to service path switching；Phase
Instead, switchback does not occur for network side, and service path is constant.
2nd, when business side fault recovery, this programme network side is constant, when business side detects fault recovery, is divided into two kinds
Situation：Recovery formula and Non revertive.If recovering formula, then RNC switchbacks carry out business reception to master port, and the dual-homed section of ring is received in choosing
The message that point 3 is sent, this will be related to service path switching；Otherwise, switchback does not occur for RNC, and message is received in standby port, and ring is received in choosing
The message that dual homed node 4 is sent, then service path is constant.
The embodiment of the present invention is based on G.8132 ring protection, has filled up currently without the dual-homed access based on MPLS ring protections
Blank, the present invention can realize the service access based on MPLS ring protections Yu dual-homed same level.
The embodiment of the present invention additionally provides a kind of node of looped network, and the node of the looped network is used as link point is gone out, such as Fig. 9
It is shown, including：
Message receiving unit 901, for receiving service message；
Node determining unit 902, for determining whether itself is that above-mentioned service message goes out link point, if to work as forward
Send out last node in passage；
Forwarding control subsystem 903, if determining to go out ring as above-mentioned service message certainly for above-mentioned node determining unit 902
Node, and be not last node in current forwarding channel, then replicate above-mentioned service message and be transmitted to current forwarding channel
Next node；And above-mentioned service message decapsulate to obtain user data, to the above-mentioned user of target node
Data, above-mentioned network node is the node outside looped network.
More than one is configured in the forwarding channel of scheme of the embodiment of the present invention and goes out link point, is not last node
Node will duplication service message continue on forwarding channel and forwarded；So on this forwarding channel, each go out ring
Node can unseal service message and forward data to network controller.It follows that in this embodiment scheme looped network protection and
The dual-homing protection of network side is same level（All it is looped network level）, therefore a kind of protection of new looped network access service is provided
Scheme, and the problem of protection is superimposed and protects overlapping is solved, PW OAM and APS resources can be saved.
Further, above-mentioned forwarding control subsystem 903, if being additionally operable to above-mentioned node determining unit 902 determines first node
Go out link point for above-mentioned service message, and be last node in current forwarding channel, then above-mentioned service message is entered
Row decapsulation obtains user data, to the above-mentioned user data of target node.
Alternatively, above-mentioned network node has two, above-mentioned forwarding control subsystem 903, for distinguishing to two network nodes
Forward above-mentioned user data.
The embodiment of the present invention additionally provides the node of another looped network, as shown in Figure 10, including：
Data receipt unit 1001, for receiving user data；
Encapsulation unit 1002, the user data encapsulated tags for being received for above-mentioned data receipt unit 1001 obtain business
Message simultaneously configures forwarding channel；Above-mentioned forwarding channel indicates routing direction and two on above-mentioned routing direction go out link
Point；
Retransmission unit 1003, the main channel for being indicated to forwarding channel forwards the business that above-mentioned encapsulation unit 1002 is obtained
Message；If Section Point detects main channel, direction is broken down, and is performed and is switched according to APS agreement, to standby
Passage forwards above-mentioned service message.
More than one is configured in the forwarding channel of scheme of the embodiment of the present invention and goes out link point, is not last node
Node will duplication service message continue on forwarding channel and forwarded；So on this forwarding channel, each go out ring
Node can unseal service message and forward data to network controller.It follows that in this embodiment scheme looped network protection and
The dual-homing protection of network side is same level（All it is looped network level）, therefore a kind of protection of new looped network access service is provided
Scheme, and the problem of protection is superimposed and protects overlapping is solved, PW OAM and APS resources can be saved.
Further, above-mentioned retransmission unit 1003, is additionally operable to during above-mentioned service message is forwarded to alternate channel, if
Detect main channel and recover normal, then forward above-mentioned service message to main channel.
The embodiment of the present invention additionally provides a kind of network node, and above-mentioned network node is the node outside looped network, such as Figure 11 institutes
Show, including：
Port determining unit 1101, for determining whether master port and standby port communication are normal, above-mentioned master port is upper
First stated on the main channel that network node is indicated with the forwarding channel of service message goes out the port that link point communicates；It is above-mentioned standby
It is that above-mentioned network node goes out what link point communicated with second on the main channel of the forwarding channel instruction of service message with port
Port；
Data cell 1102 is received, if normal for main side port communications, received from master port and goes out link from looped network
The user data of point；If master port communication failure, and standby port is normal, then is received from standby port and go out link from looped network
The user data of point.
More than one is configured in the forwarding channel of scheme of the embodiment of the present invention and goes out link point, is not last node
Node will duplication service message continue on forwarding channel and forwarded；So on this forwarding channel, each go out ring
Node can unseal service message and forward data to network controller.It follows that in this embodiment scheme looped network protection and
The dual-homing protection of network side is same level（All it is looped network level）, therefore a kind of protection of new looped network access service is provided
Scheme, and the problem of protection is superimposed and protects overlapping is solved, PW OAM and APS resources can be saved.
Alternatively, above-mentioned reception data cell 1102, including：
As shown in figure 12, the receiving unit 1202 of Port control unit 1201 and first, or, as shown in figure 13, second connects
Receive unit 1301 and data selection unit 1302；
Above-mentioned Port control unit 1201, if normal for main side port communications, open master port and closes standby port；
If master port communication failure, and standby port is normal, then closes master port and open standby port；
Above-mentioned first receiving unit 1202, for receiving the user data from master port from the master port of unlatching；Or,
The user data from standby port is received from the standby port of unlatching；
Above-mentioned second receiving unit 1301, standby port is come from for receiving the user data from master port, and receiving
User data；
Above-mentioned data selection unit 1302, if for master port communication failure, and standby port is normal, then by above-mentioned second
The user data from master port that receiving unit 1301 is received is deleted；If main side port communications are normal, above-mentioned second is received
The user data from standby port that unit 1301 is received is deleted.
Further, above-mentioned reception data cell 1102, is additionally operable to going out link from standby port reception from looped network
During the user data of point, if detecting master port communication recovery normally, continue to receive from looped network from standby port
Go out the user data of link point, or, it is switched to from master port and receives the user data for going out link point from looped network.
The embodiment of the present invention additionally provides a kind of looped network node, as shown in figure 14, including：Receiver 1401, transmitter
1402nd, processor 1403 and memory 1404；
Wherein, above-mentioned processor 1403, for receiving service message by receiver 1401；Determine whether itself is above-mentioned
Service message goes out link point, if be last node in current forwarding channel；If it is determined that from as above-mentioned business report
Literary goes out link point, and is not last node in current forwarding channel, then replicates above-mentioned service message and pass through transmitter
1402 are transmitted to the next node of current forwarding channel, and above-mentioned service message decapsulate to obtain user data,
By transmitter 1402 to the above-mentioned user data of target node, above-mentioned network node is the node outside looped network.
More than one is configured in the forwarding channel of scheme of the embodiment of the present invention and goes out link point, is not last node
Node will duplication service message continue on forwarding channel and forwarded；So on this forwarding channel, each go out ring
Node can unseal service message and forward data to network controller.It follows that in this embodiment scheme looped network protection and
The dual-homing protection of network side is same level（All it is looped network level）, therefore a kind of protection of new looped network access service is provided
Scheme, and the problem of protection is superimposed and protects overlapping is solved, PW OAM and APS resources can be saved.
Further, above-mentioned processor 1403, is additionally operable to if it is determined that going out link point as above-mentioned service message certainly, and be
Last node in current forwarding channel, then to above-mentioned service message decapsulate obtaining user data, pass through transmitting
Device 1402 is to the above-mentioned user data of target node.
Alternatively, above-mentioned network node has two, above-mentioned processor 1403, for by transmitter 1402 to network node
Above-mentioned user data is forwarded to include：For forwarding above-mentioned user data respectively to two network nodes by transmitter 1402.
The embodiment of the present invention additionally provides another looped network node, as shown in figure 15, including：Receiver 1501, transmitter
1502nd, processor 1503 and memory 1504；
Wherein, processor 1503, for receiving user data by receiver 1501；For above-mentioned user data encapsulated tags
Obtain service message and configure forwarding channel；Above-mentioned forwarding channel indicate routing direction and on above-mentioned routing direction two
It is individual go out link point；Above-mentioned service message is forwarded to the main channel that forwarding channel is indicated by transmitter 1502；If Section Point is examined
Measure main channel direction to break down, then perform and switch according to APS agreement, led to by transmitter 1502 to standby
Road forwards above-mentioned service message.
More than one is configured in the forwarding channel of scheme of the embodiment of the present invention and goes out link point, is not last node
Node will duplication service message continue on forwarding channel and forwarded；So on this forwarding channel, each go out ring
Node can unseal service message and forward data to network controller.It follows that in this embodiment scheme looped network protection and
The dual-homing protection of network side is same level（All it is looped network level）, therefore a kind of protection of new looped network access service is provided
Scheme, and the problem of protection is superimposed and protects overlapping is solved, PW OAM and APS resources can be saved.
Further, above-mentioned processor 1503, is additionally operable to during above-mentioned service message is forwarded to alternate channel, if inspection
Measure main channel and recover normal, then above-mentioned service message is forwarded to main channel by transmitter 1502.
The embodiment of the present invention additionally provides another network node, and above-mentioned network node is the node outside looped network, such as Figure 16
It is shown, including：Receiver 1601, transmitter 1602, processor 1603 and memory 1604；
Wherein, processor 1603, for determining whether master port and standby port communication are normal, above-mentioned master port is above-mentioned
First on main channel that network node is indicated with the forwarding channel of service message goes out the port that link point communicates；It is above-mentioned standby
Port is second on the main channel that above-mentioned network node is indicated with the forwarding channel of service message and goes out the end that link point communicates
Mouthful；If main side port communications are normal, the user data for going out link point from looped network is received from master port by receiver 1601；
If master port communication failure, and standby port is normal, then is received by receiver 1601 from standby port and go out ring from looped network
The user data of node.
More than one is configured in the forwarding channel of scheme of the embodiment of the present invention and goes out link point, is not last node
Node will duplication service message continue on forwarding channel and forwarded；So on this forwarding channel, each go out ring
Node can unseal service message and forward data to network controller.Network controller goes out the data of link point transmission to two
Carry out choosing receipts.It follows that the dual-homing protection of looped network protection and network side is same level in this embodiment scheme（All it is looped network
Level）, therefore provide a kind of protection scheme of new looped network access service, and solve that protection superposition is overlapping with protecting to ask
Topic, can save PW OAM and APS resources.
Alternatively, above-mentioned processor 1603, link is gone out for being received by receiver 1601 from master port from looped network
The user data of point includes：The user data from master port is received for opening master port by receiver 1601, is closed standby
Use port；Or, the user data from master port is received by receiver 1601, and receive the number of users from standby port
According to；Then the user data from standby port is deleted；
Above-mentioned processor 1603, for receiving the use for going out link point from looped network from standby port by receiver 1601
User data includes：Open standby port and the user data from standby port is received by receiver 1601, close master port；Or
Person, receives the user data from master port, and receive the user data from standby port by receiver 1601；Then delete
Except the user data from master port.
Further, above-mentioned processor 1603, ring is gone out being received by receiver 1601 from standby port from looped network
During the user data of node, if it is normal to be additionally operable to detect master port communication recovery, continue through receiver 1601 from
Standby port receives the user data for going out link point from looped network, or, it is switched to from master port and is connect by receiver 1601
Receive the user data for going out link point from looped network.
The embodiment of the present invention additionally provides a kind of system of the protection of looped network access service, as shown in figure 17, including：Comprising
In the looped network of at least three nodes, looped network comprising one enter link point 1701, two go out link point 1702；Network node 1703,
Above-mentioned network node is the node outside looped network, wherein, it is above-mentioned enter link point 1701 for as shown in the embodiment of the invention shown in Figure 10
Node, it is above-mentioned go out link point be the node of Fig. 9 as shown in the embodiment of the invention, above-mentioned network node is such as the embodiment of the present invention
The network node of any one of shown Figure 11~12.Can also be as follows：It is above-mentioned enter link point 1701 be such as embodiment of the present invention institute
Node shown in diagram 15, it is above-mentioned go out link point 1702 be the node of Figure 14 as shown in the embodiment of the invention, above-mentioned network node
1703 be the network node of Figure 16 as shown in the embodiment of the invention.Go out link point, the number of network node 1703 corresponding to different
There can be one or two.
More than one is configured in the forwarding channel of scheme of the embodiment of the present invention and goes out link point, is not last node
Node will duplication service message continue on forwarding channel and forwarded；So on this forwarding channel, each go out ring
Node can unseal service message and forward data to network controller.Network controller goes out the data of link point transmission to two
Carry out choosing receipts.It follows that the dual-homing protection of looped network protection and network side is same level in this embodiment scheme（All it is looped network
Level）, therefore provide a kind of protection scheme of new looped network access service, and solve that protection superposition is overlapping with protecting to ask
Topic, can save PW OAM and APS resources.
It is worth noting that, in above-described embodiment, included unit is simply divided according to function logic,
But above-mentioned division is not limited to, as long as corresponding function can be realized；In addition, the specific name of each functional unit
Only to facilitate mutually distinguishing, the protection domain being not intended to limit the invention.
In addition, one of ordinary skill in the art will appreciate that realizing all or part of step in above-mentioned each method embodiment
It can be by program to instruct the hardware of correlation to complete, corresponding program can be stored in a kind of computer-readable recording medium
In, storage medium mentioned above can be read-only storage, disk or CD etc..
The present invention preferably embodiment is these are only, but protection scope of the present invention is not limited thereto, it is any
Those familiar with the art the change that can readily occur in or replaces in the technical scope that the embodiment of the present invention is disclosed
Change, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claim
Enclose and be defined.
Claims (16)
1. a kind of guard method of looped network access service, it is characterised in that including：
First node receives service message；
The first node determines whether itself is that the service message goes out link point, if be in current forwarding channel most
Latter node；
If it is determined that the first node goes out link point for the service message, and it is not last in current forwarding channel
Node, then replicate the next node that the service message is transmitted to current forwarding channel, and the service message is carried out
Decapsulation obtains user data, to user data described in target node, and the network node is the node outside looped network；
Wherein, the current forwarding channel is Section Point to the first node and extends to the ring pair of the next node
Return Virtual Channel, the Section Point is used to receive user data and generates the service message according to the user data, described
Next node goes out link point for another of the service message, and the first node and next node composition ring are double
Home node, and it is dual-homed to the network node, the first node, the Section Point and next node position
In the looped network.
2. method according to claim 1, it is characterised in that the network node has two, described to target node
The user data includes：
The user data is forwarded respectively to two network nodes.
3. a kind of guard method of looped network access service, it is characterised in that including：
Section Point receives user data；
The Section Point is that the user data encapsulated tags obtain service message and configure forwarding channel；The forwarding channel
Indicate routing direction and two on the routing direction go out link point, it is described two go out link point go out ring including first
Node and second goes out link point；
The Section Point forwards the service message to the main channel that forwarding channel is indicated；
If the Section Point detects main channel direction and broken down, perform and switch according to APS agreement, to
Alternate channel forwards the service message；
Wherein, the main channel is that the Section Point goes out link point to described first and extend to described second to go out link point
Ring dual homed Virtual Channel, the alternate channel is that the Section Point goes out link point to described second and extend to described first to go out ring
The ring dual homed Virtual Channel of node, described first, which goes out link point and described second, goes out the link point composition dual-homed node of ring, and double
Belong to network node, the network node is the node outside looped network, shown first go out link point, described second go out link point and
The Section Point is located in the looped network.
4. method according to claim 3, it is characterised in that also include：
During the service message is forwarded to alternate channel, if detecting main channel recovers normal, forwarded to main channel
The service message.
5. a kind of guard method of looped network access service, it is characterised in that including：
Network node determines whether master port and standby port communication are normal, and the master port is the network node and business report
First on main channel that the forwarding channel of text is indicated goes out the port of link point communication；The standby port is the network node
Second on main channel indicated with the forwarding channel of service message goes out the port that link point communicates；
If main side port communications are normal, the user data for going out link point from looped network is received from master port；
If master port communication failure, and standby port is normal, then receives the user for going out link point from looped network from standby port
Data；
Wherein, the main channel is that Section Point goes out link point to described first and extends to the described second ring pair for going out link point
Return Virtual Channel, described first, which goes out link point and described second, goes out the link point composition dual-homed node of ring, and dual-homed described in
Network node, the network node is the node outside looped network, and the Section Point is used to receive user data and used according to described
User data generates the service message, and shown first goes out link point, described second goes out link point and the Section Point is located at institute
State in looped network.
6. method according to claim 5, it is characterised in that described to receive the use for going out link point from looped network from master port
User data includes：
Open master port and receive the user data from master port, close standby port；Or, receive the user from master port
Data, and receive the user data from standby port；Then the user data from standby port is deleted；
It is described to include from the user data that goes out link point of the standby port reception from looped network：
Open standby port and receive the user data from standby port, close master port；Or, receive the use from master port
User data, and receive the user data from standby port；Then the user data from master port is deleted.
7. method according to claim 5, it is characterised in that receiving the use for going out link point from looped network from standby port
During user data, in addition to：
If it is normal to detect master port communication recovery, continue to receive the number of users for going out link point from looped network from standby port
According to, or, it is switched to from master port and receives the user data for going out link point from looped network.
8. a kind of first node of looped network, it is characterised in that including：
Message receiving unit, for receiving service message；
Node determining unit, for determining whether itself is that the service message goes out link point, if be current forwarding channel
In last node；
Forwarding control subsystem, if determine to go out link point as the service message certainly for the node determining unit, and not
It is last node in current forwarding channel, then replicates next section that the service message is transmitted to current forwarding channel
Point；And the service message decapsulate to obtain user data, to user data described in target node；
Wherein, the current forwarding channel is Section Point to the first node and extends to the ring pair of the next node
Return Virtual Channel, the Section Point is used to receive user data and generates the service message according to the user data, described
Next node goes out link point for another of the service message, and the first node and next node composition ring are double
Home node, and it is dual-homed to the network node, the first node, the Section Point and next node position
In the looped network.
9. first node according to claim 8, it is characterised in that the network node has two, and the forwarding control is single
Member, for forwarding the user data respectively to two network nodes.
10. a kind of Section Point of looped network, it is characterised in that including：
Data receipt unit, for receiving user data；
Encapsulation unit, the user data encapsulated tags for being received for the data receipt unit obtain service message and configured to turn
Send out passage；The forwarding channel indicates routing direction and two on the routing direction go out link point, described two
Go out link point and go out link point and second including first to go out link point；
Retransmission unit, the main channel for being indicated to forwarding channel forwards the service message that the encapsulation unit is obtained；If described
Section Point detects main channel direction and broken down, then performs and switch according to APS agreement, turn to alternate channel
Send out service message described；
Wherein, the main channel is that the Section Point goes out link point to described first and extend to described second to go out link point
Ring dual homed Virtual Channel, the alternate channel is that the Section Point goes out link point to described second and extend to described first to go out ring
The ring dual homed Virtual Channel of node, described first, which goes out link point and described second, goes out the link point composition dual-homed node of ring, and double
Belong to network node, the network node is the node outside looped network, shown first go out link point, described second go out link point and
The Section Point is located in the looped network.
11. Section Point according to claim 10, it is characterised in that
The retransmission unit, is additionally operable to during the service message is forwarded to alternate channel, if detecting main channel recovery
Normally, then the service message is forwarded to main channel.
12. a kind of network node, the network node is the node outside looped network, it is characterised in that including：
Port determining unit, for determining whether master port and standby port communication are normal, the master port is the network section
First on main channel that point is indicated with the forwarding channel of service message goes out the port that link point communicates；The standby port is institute
Second stated on the main channel that network node is indicated with the forwarding channel of service message goes out the port that link point communicates；
Data cell is received, if normal for main side port communications, the user for going out link point from looped network is received from master port
Data；If master port communication failure, and standby port is normal, then receives the user for going out link point from looped network from standby port
Data；
Wherein, the main channel is that Section Point goes out link point to described first and extends to the described second ring pair for going out link point
Return Virtual Channel, described first, which goes out link point and described second, goes out the link point composition dual-homed node of ring, and dual-homed described in
Network node, the network node is the node outside looped network, and the Section Point is used to receive user data and used according to described
User data generates the service message, and shown first goes out link point, described second goes out link point and the Section Point is located at institute
State in looped network.
13. the network node according to claim 12, it is characterised in that the reception data cell, including：
Port control unit and the first receiving unit, or, the second receiving unit and data selection unit；
The Port control unit, if normal for main side port communications, open master port and closes standby port；If master port
Communication failure, and standby port is normal, then closes master port and open standby port；
First receiving unit, for receiving the user data from master port from the master port of unlatching；Or, from unlatching
Standby port receives the user data from standby port；
Second receiving unit, for receiving the user data from master port, and receives the number of users from standby port
According to；
The data selection unit, if for master port communication failure, and standby port is normal, then by second receiving unit
The user data from master port received is deleted；If main side port communications are normal, by coming that second receiving unit is received
Deleted from the user data of standby port.
14. the network node according to claim 12, it is characterised in that
The reception data cell, is additionally operable to receiving the user data process for going out link point from looped network from standby port
In, if detecting master port communication recovery normally, continue to receive the number of users for going out link point from looped network from standby port
According to, or, it is switched to from master port and receives the user data for going out link point from looped network.
15. a kind of system of the protection of looped network access service, including：Include and one is included in the looped network of at least three nodes, looped network
It is individual enter link point, two go out link point, it is characterised in that it is described enter link point be claim 10 or 11 described in second section
Point, it is described go out link point be claim 8 described in first node；The system also includes claim 12 to 14 any one
Described network node.
16. the system according to claim 15, it is characterised in that
The network node has two；It is described go out link point be claim 9 described in first node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310723758.3A CN103746891B (en) | 2013-12-24 | 2013-12-24 | A kind of guard method of looped network access service, apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310723758.3A CN103746891B (en) | 2013-12-24 | 2013-12-24 | A kind of guard method of looped network access service, apparatus and system |
Publications (2)
| Publication Number | Publication Date |
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| CN103746891A CN103746891A (en) | 2014-04-23 |
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| CN101072237A (en) * | 2007-03-01 | 2007-11-14 | 中兴通讯股份有限公司 | Eth-loop intelligent protection method |
| CN101102268A (en) * | 2007-08-03 | 2008-01-09 | 华为技术有限公司 | IP loop network, IP loop network routing device and packet forwarding method |
| CN102882757A (en) * | 2012-09-25 | 2013-01-16 | 华为技术有限公司 | Point-to-multipoint service protecting method for ring network and upper ring node in ring network |
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| CN101072237A (en) * | 2007-03-01 | 2007-11-14 | 中兴通讯股份有限公司 | Eth-loop intelligent protection method |
| CN101102268A (en) * | 2007-08-03 | 2008-01-09 | 华为技术有限公司 | IP loop network, IP loop network routing device and packet forwarding method |
| CN102882757A (en) * | 2012-09-25 | 2013-01-16 | 华为技术有限公司 | Point-to-multipoint service protecting method for ring network and upper ring node in ring network |
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