CN102891787B - Looped network tunnel configuration method, business switch method and system based on overlapping trees - Google Patents
Looped network tunnel configuration method, business switch method and system based on overlapping trees Download PDFInfo
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- CN102891787B CN102891787B CN201110204020.7A CN201110204020A CN102891787B CN 102891787 B CN102891787 B CN 102891787B CN 201110204020 A CN201110204020 A CN 201110204020A CN 102891787 B CN102891787 B CN 102891787B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
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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
Abstract
The invention discloses a kind of looped network tunnel configuration method, business switch method and system based on overlapping trees, the lower link point of business configures the work tunnel protected each other and protection path based on overlapping trees as purpose node using on ring, including：Configure from the adjacent node of this node to the work tunnel of this node, and configured along the opposite direction of work tunnel from another adjacent node of this node to the protection path of this node clockwise or counterclockwise.The present invention utilizes the overlapping trees for the multipoint-to-point (MP2P) set up on ring; carry out multiple nodes on load-carrying ring and enter the business that ring goes out ring to same node; compared with prior art; avoid the complexity of configuration; distribute rationally, use the protection path of certain node up on ring to realize the transmission and protection to looped network business.
Description
Technical field
The present invention relates to looped network protection technical field, more particularly to a kind of looped network tunnel configuration side based on overlapping trees
Method, business switch method and system.
Background technology
Currently in looped network, for Wrapping (loopback) protection scheme in G.8132 standard, because the protection scheme is
One closed protective ring of each protected LSP (Label Switching Path, label switched path) correspondence, it configures work
Measure too greatly, switching action is relatively more, switches processing time also long.
The content of the invention
Present invention solves the technical problem that being to provide a kind of looped network tunnel configuration method based on overlapping trees, service switching
Method and system, optimization looped network configuration, realize the transmission and protection to looped network business.
In order to solve the above technical problems, the invention provides a kind of looped network tunnel configuration method based on overlapping trees, with
The lower link point of business is purpose node on ring, configures the work tunnel protected each other and protection path based on overlapping trees,
Including：
Configure clockwise or counterclockwise from the adjacent node of this node to the work tunnel of this node, and along described
The opposite direction of work tunnel is configured from another adjacent node of this node to the protection path of this node.
Further, the overlapping trees carrying industry of one or more nodes to same destination node from the ring
Business.
Further, the overlapping trees of the net loaded multiple multipoint-to-points (MP2P) of a physical rings.
Present invention also offers a kind of looped network business switching method based on overlapping trees, methods described includes：
The lower link point of business is purpose node using on ring, configure the work tunnel protected each other based on overlapping trees and
Protection path；
Link State on ring between each nodal test and adjacent node, when detecting Link State change, sends state
Notification packet is to other nodes on ring；
The node that the Link State changes or received the state change notification packet is detected, this node is judged
On enter ring business transmitting path whether by the Link State change influenceed, if it is, will be by the fault impact
Business is switched between the work tunnel and the protection path.
Further, methods described also includes：
Detect state change or receive the node of the state change notification packet, if it is determined that entering on this node
The transmitting path of the business of ring is not changed by the Link State to be influenceed, then continues the transmitting path progress according to the business
Transmission.
Further, the Link State changes, and specifically includes：Link or node failure, link or node failure disappear；
When nodal test to or according to the state change notification packet that receives learns that the Link State changes
During for link or node failure, impacted business is switched in protection path from work at present tunnel and transmitted；
When nodal test to or according to the state change notification packet that receives learns that the Link State changes
When being disappeared for link or node failure, then it will be switched to the business that is transmitted in protection path and be restored in work tunnel.
Further, methods described also includes：
When the Link State changes into link or node failure, it be incited somebody to action this by the upper link point of the fault impact business
The state change of node is to switch (Switch) state；
When the Link State changes into link or node failure disappearance, by the upper link point of the fault impact business
The state of this node is changed into idle (Idle) state by Switch states.
Further, methods described also includes：
Service message is when upper ring is forwarded using press-in (PUSH) looped network tunnel label stacked manner, i.e. under described
Link point and the traffic direction of work tunnel are pressed into the tunnel label of (PUSH) overlapping trees, are forwarded along looped network, described
Ring under lower link point ejection (POP) tunnel label carry out business.
Further, the work tunnel each other protected and protection path of the configuration based on overlapping trees, including：
Configure clockwise or counterclockwise from the adjacent node of this node to the work tunnel of this node, and along described
The opposite direction of work tunnel is configured from another adjacent node of this node to the protection path of this node；
Wherein, overlapping trees carrying from the ring one or more nodes to same destination node business,
The overlapping trees of the net loaded multiple multipoint-to-points (MP2P) of one physical rings.
Further, the business of the overlapping trees carrying, including：VPN (VPN) business of single layer label,
Label switched path (LSP) business, the IP without label or Ethernet (Eth) business of multilayer labels.
Further, the work tunnel and the protection path support the last two jump to eject (PHP).
Present invention also offers a kind of looped network tunnel configuration system based on overlapping trees, including：Path configuration module,
The path configuration module is used for, and the lower link point of business is configured in such a way as purpose node using on ring
The work tunnel protected each other and protection path based on overlapping trees：Configure clockwise or counterclockwise from this node
Adjacent node to this node work tunnel, and along the work tunnel opposite direction configuration from this node another is adjacent
Protection path of the node to this node.
Present invention also offers a kind of looped network business switching system based on overlapping trees, the system includes：
Path configuration module, the lower link point of business configures the guarantor each other based on overlapping trees as purpose node using on ring
The work tunnel and protection path of shield；
State detection module, for detecting the Link State between this node and adjacent node；
State advertisement module, for when the state detection module detects Link State and changed, sending state change
Notification packet is to other nodes on ring；
Service switching module, when changing for detecting Link State or receive the state change notification packet,
Judging whether the transmitting path for entering the business of ring on this node is changed by the Link State is influenceed, if it is, will be by institute
State fault impact business and switched between the work tunnel and the protection path.
Further, the service switching module is additionally operable to, and is detected state change or is received the state change
During notification packet, influenceed if it is determined that the transmitting path for entering the business of ring on this node is not changed by the Link State, then
Continuation is transmitted according to the transmitting path of the business.
Further, the state detection module is used for, and detects the following change of Link State：Link or node failure,
Link or node failure disappear；
The service switching module is used for, when detecting or obtained according to the state change notification packet received
When knowing that the Link State changes into link or node failure, impacted business is switched to protection tunnel from work at present tunnel
Transmitted on road；When detecting or learn that the Link State is changed into according to the state change notification packet received
When link or node failure disappearance, then it will be switched to the business that is transmitted in protection path and be restored in work tunnel.
Further, the service switching module is additionally operable to, when the Link State changes into link or node failure,
Influenceed if it is determined that the transmitting path for entering the business of ring on this node is changed by the Link State, then by the state of this node
Change into and switch (Switch) state；When the Link State changes into link or node failure disappearance, by the state of this node
Idle (Idle) state is changed into by Switch states.
Further, the path configuration module is used for, and the lower link point of business is purpose node using on ring, according to following
Mode configures the work tunnel protected each other and protection path based on overlapping trees：Configure clockwise or counterclockwise from
The adjacent node of this node to this node work tunnel, and along the work tunnel opposite direction configuration from the another of this node
Protection path of one adjacent node to this node；
Wherein, overlapping trees carrying from the ring one or more nodes to same destination node business,
The overlapping trees of the net loaded multiple multipoint-to-points (MP2P) of one physical rings.
Using above-mentioned technical proposal of the present invention, that is, the overlapping trees for the multipoint-to-point (MP2P) set up on ring are utilized, come
Multiple nodes enter the business that ring goes out ring to same node on load-carrying ring；The technology is compared with prior art, it is to avoid the complexity of configuration
Property, distribute rationally, use the protection path of certain node up on ring to realize the transmission and protection to looped network business.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the loop network topology structure schematic diagram according to prior art；
Fig. 2 is the comprising modules schematic diagram of the Ring protection system of the embodiment of the present invention；
Fig. 3 is the service switching schematic diagram of the malfunction of the embodiment of the present invention；
Fig. 4 is the service switching schematic diagram of the failure vanishes of the embodiment of the present invention；
The schematic flow sheet that Fig. 5 switches for the looped network business of the embodiment of the present invention.
Embodiment
The looped network business switching method that present embodiment is provided, is mainly included the following steps that：
Step one, the lower link point of business is configured based on overlapping trees clockwise and anticlockwise as purpose node using on ring
Work tunnel, the two tunnels are protected each other；
Specifically, for each lower link point, first along ring clockwise or counterclockwise from the adjacent of this node
Node to this node work tunnel (being equal to path), meanwhile, set up one from this section along the opposite direction of work tunnel
Protection path of another adjacent node of point to this node；
Wherein, between described work tunnel and protection path it is mutual protection relation, that is to say, that one in a tunnel
Part resource as a direction work tunnel；Another part resource is acted on as the protection path of another opposite direction；
It is assumed that being made up of on ring N number of node, then 2N tunnels are at most needed altogether.
Every section of link all startup separators are detected (such as on step 2, ring：CC＆CV, BFD etc.), when a certain nodal test on ring
State to Link State or peer node changes, then is sent immediately along the direction of the remote failure of ring to other nodes
State change notification packet is (such as：R-APS etc.)；
Step 3, when other nodes receive the state change notification packet on ring or this node itself detects state hair
After changing, judge whether the business that ring is gone up on this node produces influence, if having an impact, carry out the switching of transmitting path；
Otherwise, transmitted still according to original transmitting path；
Specifically, when node on the ring detects failure or receives the failure generation that other nodes on ring are sent to this node
State change notification packet when, then the node will determine which business for clicking and entering ring from this section is affected, by failure shadow
Loud business, correspondence protection path will be switched to from original work tunnel and will be transmitted；It is impregnable enter ring business, then still
Transmitted in work tunnel；When failure adjacent node detects or is advertised failure vanishes on ring, then guarantor will be switched to originally
Shield transmits business on tunnel, returns in work tunnel and transmits again.
In addition, while above-mentioned steps three, in addition to following process step：When node on the ring detects failure or reception
When other nodes are sent to the state change notification packet of this node on to ring, if it is determined that the Link State changes into link
Or enter on node failure, and this node ring business transmitting path by the Link State change influenceed, then by this node
State switch to Switch from Idle states and (switch) state；And when link or node failure disappear, by the state of this node by
Switch states become Idle states.
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
As shown in Fig. 2 the looped network business switching system that the present embodiment is provided mainly includes following four module：Path is configured
Module, state detection module, state advertisement module and service switching module.Wherein, the major function of each module is described as follows：
Path configuration module, be mainly used in for each node on ring configure one from adjacent node along the clockwise of ring or
Counterclockwise to work tunnel on this node, in addition, in opposite direction adjacent from this node for work tunnel configuration one
Another node to the protection path of this node protect the work tunnel.And this work tunnel and protection path
Between mutual protection relation, that is to say, that the last part resource in each tunnel is used for work tunnel, and another part resource is used for
To another, work tunnel in opposite direction is protected；
State detection module, is mainly used in the failure by link layer between the node of two direct neighbors connections on looped network
Detection messages, detect the state of this section of link.
For example, by detecting that (Continuity Check and Connectivity Verification connect CC＆CV
Continuous property detection and connective confirmation) BFD (Bidirectional Forwarding Detection, two-way converting detection) message
Deng to detect Link State.
State advertisement module, the module is mainly used in when state detection module detects Link State and changed, then
Produce a state change notification packet, along ring on be sent to node on the ring away from the direction of failure, until under failure
Swim node；
Wherein, state change notification packet can be using such as：R-APS(Ring-Automatic Protection
Switching, looped network automatic protection switching) message etc..
Service switching module, the shape that other nodes are sended over is changed or receives according to Link State is detected
State changes notification packet (such as：R-APS etc.) after, the link or node changed according to generating state judges whether to entering on this node
The business of ring produces influence, if having an impact, is operated between tunnel and protection path and switches over；Otherwise, then still exist
Transmitted on original tunnel.
Further, state detection module is used for, and detects the following change of Link State：Link or node failure, link
Or node failure disappears；
Service switching module is used for, when detecting or learn link shape according to the state change notification packet received
When state changes into link or node failure, impacted business is switched in protection path from work at present tunnel and transmitted；When
Detect or learn that Link State changes into link or node failure disappears according to the state change notification packet received
When, then it will be switched to the business that is transmitted in protection path and be restored in work tunnel.
Further, service switching module is additionally operable to, when Link State changes into link or node failure, if it is determined that
Enter the transmitting path of the business of ring on this node is influenceed by Link State change, then by the state change of this node for
Change (Switch) state；When Link State changes into link or node failure disappearance, the state of this node is changed by Switch states
It is changed into idle (Idle) state.
In addition, a kind of looped network tunnel configuration system based on overlapping trees is additionally provided in the embodiment of the present invention, including road
Footpath configuration module, the path configuration module is used for, and the lower link point of business is configured in such a way as purpose node using on ring
The work tunnel protected each other and protection path based on overlapping trees：Configure clockwise or counterclockwise from this node
Adjacent node to this node work tunnel, and along the work tunnel opposite direction configuration from this node another is adjacent
Protection path of the node to this node.
Wherein, overlapping trees carrying from the ring one or more nodes to same destination node business,
The overlapping trees of the net loaded multiple multipoint-to-points (MP2P) of one physical rings.
Below by by taking the processing of network shown in Fig. 3 and Fig. 4 as an example, the specific implementation to the looped network business switching of the present invention
Journey is described in detail.Wherein, the business carried on looped network can be VPN (the Virtual Private of single layer label
Network, VPN) business or multilayer labels LSP service, the even IP without label or Eth (with
Too net) business, etc..
For looped network business, it realizes that the main process of looped network business switching is described as follows：
1) for first with D points in the network shown in Fig. 3, if its work tunnel is configured to its counter clockwise direction (C-
B-A-F-E-D), the protection path corresponding to it is clockwise direction E-F-A-B-C-D.
Or, work tunnel can also be configured to clockwise (E-F-A-B-C-D), its corresponding protection path is
C-B-A-F-E-D。
If 2) by business 1 (LSP service or IP operation or PW business) and business 2 (LSP, IP, PW) business respectively from ring
Upper node A and B enters ring, then on ring under non-failure conditions, then business 1 and business 2 are entered row label in A and B points respectively and exchanged
Afterwards, such as：Business 1：20- ＞ 30, business 2：After 50- ＞ 60, then C-B-A-F-E-D transmission in same work tunnel is pressed into, its
The structure chart of message is as shown in table 1 below after encapsulation.
The message encapsulation format of table 1
| Tunnel Label (path) |
| (service label) LSP Label (IP Header, PW Label) |
| PDU |
Wherein, Tunnel Label：Represent outer layer forward-path label；
LSP Label：Represent on ring is entered, the business is LSP service, then on link point is entered, carry out LSP label friendship
Change after (swap), then be pressed into outer layer tunnel Tunnel Label, transmitted in outer layer tunnel；
IP Header：Represent when on link point is entered, it is IP operation to be directly accessed into, then is directly pressed into IP operation
Outer layer tunnel Tunnel Label, are transmitted in outer layer tunnel；
PW Label：Represent on link point is entered, access be pseudo wire emulation business (such as：ATM, ETH, TDM etc.),
Then after link point progress local service processing (NSP) is originally entered, stamp after corresponding PW Label, then be pressed into outer layer tunnel
Tunnel Label, are transmitted in outer layer tunnel；
PDU：Refer to the content of the specific packaged business in the inside.
It only carries out exchange (swap) operation of outer layer tunnel label in node on the ring, and goes out on link point D to eject at it
After outer layer label 300, the processing corresponding with the progress of the business of business 2 of business 1 directly to the inside.
For example, for LSP service, then first ejecting (POP) outer layer Tunnel label, then carry out the inside LSP
Label goes out ring after exchanging (Swap)；If for IP operation, ejecting after (POP) outer layer Tunnel Label, directly according to the inside
Information on IP Header packet header, carries out out ring processing；If for PW business, then first ejecting (POP) outer layer Tunnel Label
Afterwards, then eject after (POP) PW Label, the processing such as encapsulation of artificial service is carried out according to PW Label, then go out ring operation.
3) as shown in Figure 3, when node on the ring E or F detect link or node failure, the node E of failure is detected
Or F, then it will generate state change notification packet (such as：R-APS etc.) other nodes on ring are sent to along the direction of ring, and will be right
Enter the service switching by fault impact of ring on this node to transmit to protection path (E-F-A-B-C-D)；
4) when other nodes receive the state change notification packet of failure generation on ring, business 1 and business 2 are (in figure
By taking LSP service as an example) enter from node A and B on ring, due to being influenceed by E-F link failures, then business 1 and business 2 are distinguished
Carried out from A and B node after service label exchange, such as：Business 1：20- ＞ 30, business 2：After 50- ＞ 60, its is pressed directly into right
The protection path E-F-A-B-C-D transmission answered；Until reaching its ring egress D, after ejection outer layer protection tunnel label 401, directly
Connect and business 1 and the business of business 2 of the inside etc. are handled；
5) when failure vanishes on ring, as shown in figure 4, when link failure disappears between F and E, then node F or E are detected
During failure vanishes, then the original business transmitted from protection path on E-F-A-B-C-D on this node is returned into work again
Make C-B-A-F-E-D on tunnel to transmit；Meanwhile, the node E or F of state change are detected, the state of a failure vanishes is generated
Change notification packet, along the direction of ring, be sent to other nodes on ring.
6), then will be original on respective node when other nodes receive the state change notification packet of the failure vanishes on ring
The ring business that enters transmitted from protection path is transmitted on switch operating tunnel again.
7) and for business 1 and business 2, it is pressed into its work tunnel C-B-A-F-E- from A and B points respectively again
D gets on, and goes out until being sent to it after link point D, after ejection outer operative tunnel label 300, further according to the business 1 and industry of the inside
The different service types of business 2 are handled accordingly.
Wherein, when the business for entering ring is transmitted in work tunnel (or protection path), when being sent to work tunnel in business
In road/protection path during the last two jump, outer layer tunnel label can be ejected (PHP), directly send the business transmitted
Go out link point to business, continue to transmit.
Fig. 5 shows the handling process of the looped network business switching method of the embodiment of the present invention, as shown in figure 5, the flow bag
Include：
Step 101, each egress configuration work tunnel and protection path on ring.
Step 102, fault detect message is periodically sent on every section of link.
Step 103, judge whether to detect Link State change, if it is, performing step 104, otherwise, perform step
105。
Step 104, state change notification packet is immediately generated, other nodes on ring are sent to.
Step 105, state advertisement is periodically sent.
Step 106, node on the ring detects or received other state change notification packets.
Step 107, judge whether to be changed into malfunction from normal condition, if it is, performing step 108, otherwise, perform
Step 109.
Step 108, each node sends impacted service switching to protection path, and performs step 110.
Step 109, ring business recovery is entered on each node to work tunnel.
Step 110, go out link point and receive business from work tunnel or protection path.
Wherein, above-mentioned work tunnel and protection path can support PHP.
It these are only that the present invention's is preferable to carry out case, be not intended to limit the invention, the present invention can also have other
Various embodiments, in the case of without departing substantially from spirit of the invention and its essence, those skilled in the art can be according to this hair
It is bright to make various corresponding changes and deformation, but these corresponding changes and deformation should all belong to appended claims of the invention
Protection domain.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be shown to be performed different from order herein
The step of going out or describe, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
Claims (11)
1. a kind of looped network business switching method based on overlapping trees, it is characterised in that methods described includes：
The lower link point of business configures the work tunnel protected each other based on overlapping trees and protection as purpose node using on ring
Tunnel；The work tunnel each other protected and protection path of the configuration based on overlapping trees, including：Along clockwise or counterclockwise
Direction configure from the adjacent node of this node to the work tunnel of this node, and along the work tunnel opposite direction configuration from
Protection path of another adjacent node of this node to this node；
Link State on ring between each nodal test and adjacent node, when detecting Link State change, sends state advertisement
Message is to other nodes on ring；
The node that the Link State changes or received the state change notification packet is detected, judges to enter on this node
Whether the transmitting path of the business of ring is changed by the Link State is influenceed, if it is, will be by fault impact business in institute
State and switched between work tunnel and the protection path；
Detect state change or receive the node of the state change notification packet, if it is determined that entering ring on this node
The transmitting path of business is not changed by the Link State to be influenceed, then continues to be passed according to the transmitting path of the business
Send.
2. the method as described in claim 1, it is characterised in that
The Link State changes, and specifically includes：Link or node failure, link or node failure disappear；
When nodal test learns that the Link State changes into chain to or according to the state change notification packet that receives
When road or node failure, impacted business is switched in protection path from work at present tunnel and transmitted；
When nodal test learns that the Link State changes into chain to or according to the state change notification packet that receives
When road or node failure disappearance, then it will be switched to the business that is transmitted in protection path and be restored in work tunnel.
3. method as claimed in claim 2, it is characterised in that methods described also includes：
When the Link State changes into link or node failure, by the fault impact business upper link point by this node
State change to switch (Switch) state；
When the Link State changes into link or node failure disappearance, it be incited somebody to action this by the upper link point of the fault impact business
The state of node changes into idle (Idle) state by Switch states.
4. the method as described in claim 1, it is characterised in that methods described also includes：
Service message is when upper ring is forwarded using press-in (PUSH) looped network tunnel label stacked manner, i.e. according to the lower link
Point and the traffic direction of work tunnel are pressed into the tunnel label of (PUSH) overlapping trees, are forwarded along looped network, the lower ring
Ring under node ejection (POP) tunnel label carry out business.
5. method as claimed in claim 1 or 2, it is characterised in that
Overlapping trees carrying from the ring one or more nodes to the business of same destination node, a physical rings
The overlapping trees of net loaded multiple multipoint-to-points (MP2P).
6. method as claimed in claim 5, it is characterised in that
The business of the overlapping trees carrying, including：VPN (VPN) business of single layer label, the mark of multilayer labels
Switching path (LSP) business of label, the IP without label or Ethernet (Eth) business.
7. method as claimed in claim 5, it is characterised in that
The work tunnel and the protection path support the last two jump to eject (PHP).
8. a kind of looped network business switching system based on overlapping trees, it is characterised in that the system includes：
Path configuration module, the lower link point of business is purpose node using on ring, configuration protecting each other based on overlapping trees
Work tunnel and protection path；
The path configuration module is used for, and the lower link point of business is purpose node using on ring, and configuration in such a way is based on
The work tunnel protected each other and protection path of overlapping trees：Configure clockwise or counterclockwise from the adjacent of this node
Node to this node work tunnel, and along the opposite direction configuration of the work tunnel from another adjacent node of this node
To the protection path of this node；
State detection module, for detecting the Link State between this node and adjacent node；
State advertisement module, for when the state detection module detects Link State and changed, sending state change notice
Message is to other nodes on ring；
Service switching module, when changing for detecting Link State or receive the state change notification packet, judges
Whether by Link State change influenceed, if it is, will be by failure shadow if entering the transmitting path of the business of ring on this node
The business of sound is switched between the work tunnel and the protection path；
The service switching module is additionally operable to, when detecting state change or receiving the state change notification packet, such as
Fruit, which judges that the transmitting path for entering the business of ring on this node is not changed by the Link State, to be influenceed, then is continued according to the industry
The transmitting path of business is transmitted.
9. system as claimed in claim 8, it is characterised in that
The state detection module is used for, and detects the following change of Link State：Link or node failure, link or node failure
Disappear；
The service switching module is used for, when detecting or learn institute according to the state change notification packet received
When stating Link State and changing into link or node failure, impacted business is switched in protection path from work at present tunnel
Transmission；When detecting or learn that the Link State changes into link according to the state change notification packet received
Or during node failure disappearance, then will be switched to the business that is transmitted in protection path and be restored in work tunnel.
10. system as claimed in claim 9, it is characterised in that
The service switching module is additionally operable to, when the Link State changes into link or node failure, if it is determined that this section
Enter the transmitting path of the business of ring on point is influenceed by Link State change, then is to switch by the state change of this node
(Switch) state；When the Link State changes into link or node failure disappearance, by the state of this node by Switch states
Change into idle (Idle) state.
11. system as claimed in claim 8, it is characterised in that
Overlapping trees carrying from the ring one or more nodes to the business of same destination node, a physical rings
The overlapping trees of net loaded multiple multipoint-to-points (MP2P).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204020.7A CN102891787B (en) | 2011-07-20 | 2011-07-20 | Looped network tunnel configuration method, business switch method and system based on overlapping trees |
| PCT/CN2012/077242 WO2013010423A1 (en) | 2011-07-20 | 2012-06-20 | Shared path-based ring network tunnel configuration method, and service switching method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204020.7A CN102891787B (en) | 2011-07-20 | 2011-07-20 | Looped network tunnel configuration method, business switch method and system based on overlapping trees |
Publications (2)
| Publication Number | Publication Date |
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| CN102891787A CN102891787A (en) | 2013-01-23 |
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| CN105099748A (en) * | 2014-05-23 | 2015-11-25 | 中兴通讯股份有限公司 | Method and system for migrating business tunnel |
| CN105591898A (en) * | 2014-10-21 | 2016-05-18 | 中兴通讯股份有限公司 | Tunnel protection method and tunnel protection device based on shared tunnels |
| CN106304202B (en) * | 2015-05-18 | 2019-04-30 | 中兴通讯股份有限公司 | The band width control method and device shared based on tunnel |
| US10110475B2 (en) | 2015-07-16 | 2018-10-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Restoration method for an MPLS ring network |
| CN107528759B (en) * | 2016-06-22 | 2021-10-08 | 中兴通讯股份有限公司 | Service processing method, service ring-out node and ring network |
| CN107592251A (en) * | 2016-07-08 | 2018-01-16 | 中兴通讯股份有限公司 | The method of shared ring transannular networking structure and transannular Business Stream forwarding |
| CN110440391B (en) * | 2019-08-07 | 2020-10-27 | 珠海格力电器股份有限公司 | Loop network protection method and air conditioning system |
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| CN1747439A (en) * | 2005-10-14 | 2006-03-15 | 杭州华为三康技术有限公司 | Fault treating method for phase switching loop of automatic protection system of Ethernet |
| CN101227370A (en) * | 2008-02-05 | 2008-07-23 | 中兴通讯股份有限公司 | Method for processing fault of transferring multi-protocol label switch sharing protection ring |
| CN101594191A (en) * | 2008-05-27 | 2009-12-02 | 华为技术有限公司 | The guard method of shared link interlinking ring network, system and interlink node |
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