CN105681149B - Looped network protecting method and device - Google Patents
Looped network protecting method and device Download PDFInfo
- Publication number
- CN105681149B CN105681149B CN201511019128.3A CN201511019128A CN105681149B CN 105681149 B CN105681149 B CN 105681149B CN 201511019128 A CN201511019128 A CN 201511019128A CN 105681149 B CN105681149 B CN 105681149B
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- China
- Prior art keywords
- node
- business
- service aisle
- protection channel
- looped network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses looped network protecting method and devices, comprising: presets protection channel；When detecting failure, business transmission is switched to reversed pre-set protection channel by service aisle, to make business be transferred to the lower link point and lower ring using the protection channel.The technical solution provided through the invention, avoids the generation of the loop when upper link point is to the clockwise path of lower link point and anticlockwise path while breaking down, and avoids data transmission blocking.
Description
Technical field
The present invention relates to the communication technology, espespecially looped network protecting method and device.
Background technique
In order to improve the reliability of network, isolated fault, the cost for reducing to maintain equipment, Packet Transport Network (PTN,
Packet Transport Network) equipment needs realized in a manner of looped network data transmit.Wherein, more associations in Ring network technologies
Discuss Tag switching (MPLS-TP, Multiprotocol Label Switching-Transport Profile) technical application compared with
It is extensive.MPLS-TP technology realizes that the mode of looped network protection includes loopback (Wrapping) mode.
In Wrapping mode, looped network protection includes service aisle and protection channel, wherein service aisle includes up time
Needle service aisle and service aisle counterclockwise；Protecting channel includes protection channel and clockwise protection channel counterclockwise.Clockwise
Service aisle and counterclockwise protection channel form a looped network protection group, and service aisle counterclockwise is formed with protection channel clockwise
One looped network protection group realizes the load balancing of business transmission by two looped network protection groups.
Taking the example shown in figure 1, node A, node B, node C, node D, node E, node F form a looped network.With node C
For lower link point, then service aisle clockwise are as follows: D- > E- > F- > A- > B- > C protects channel counterclockwise are as follows: C- > B- > A- > F- >
E->D->C；Service aisle counterclockwise are as follows: B- > A- > F- > E- > D- > C protects channel clockwise are as follows: C- > D- > E- > F- > A- > B- >
C.As it can be seen that protection channel and protection channel counterclockwise are a closed rings clockwise.
Under normal circumstances, business is transferred to lower ring by service aisle clockwise or service aisle counterclockwise by upper link point
Node.Specifically, business packed has tunnel (Tunnel) label for indicating lower link point and transmits on ring for indicating
The ring label of the next node in path.Upper link point is based on Tunnel label and ring label for the downward ring node-node transmission of business.With
For Fig. 1, if business reaches lower link point C by ring on node F, by service aisle counterclockwise, i.e., transmission path be F- > E- >
D- > C (referring to the heavy line in Fig. 1).
In the case where link failure occurs, the business on service aisle is switched to reversed guarantor by the node to break down
It protects on channel, meanwhile, it will come on corresponding protection channel switching to reversed service aisle.Specifically, when node on the ring is suitable
Conterclockwise link breaks down, then service aisle clockwise is switched to protection channel counterclockwise, protects channel clockwise
It is switched to service aisle counterclockwise；When the anticlockwise link of node on the ring breaks down, then service aisle counterclockwise is fallen
Protection channel clockwise is changed to, protects channel switching to service aisle clockwise counterclockwise.It is transferred in looped network and occurs in business
It when at another node of failure, then switches the business on reversed service aisle, until being transferred to lower link point.As it can be seen that
Wrapping mode realizes that flow of the business at failure is reversed based on the coordination of the adjacent node of failure two sides, to complete
Pretection switch.
By taking Fig. 2 as an example, business is by ring on node F, the ring at lower link point C, and the link between node E and node D occurs
Failure.Business on service aisle counterclockwise is switched on protection channel clockwise by the node E to break down, and is transmitted always
Link failure is detected to node D, D, is switched the business on service aisle counterclockwise, until being transferred to lower link point C, that is, is passed
Defeated path is F- > E- > F- > A- > B- > C- > D- > C.
However, when there is event in upper link point to the clockwise path of lower link point and anticlockwise path
When barrier, it is switched to due to the business on service aisle on reversed protection channel, meanwhile, it is transferred in looped network in business and event occurs
It when another node of barrier, then switches the business on reversed service aisle, then there have been loops.
By taking Fig. 3 as an example, business is by ring on node F, the ring at lower link point C, and the link between node E and node D occurs
Failure, the link between node A and node B also break down.Business is transferred to E from ring on node F, through service aisle counterclockwise
Business is switched to protection channel clockwise by service aisle counterclockwise since E point detects counter clockwise direction failure by point
On, and business is transferred to node A along protection channel clockwise；Since node A equally detects clockwise direction failure, because
Business is transferred to by this again by being protected on channel switching to service aisle counterclockwise clockwise, and along service aisle counterclockwise again
Node E.In this way, the business forms loop between node A, F, E.If, can at this point, upper link point F constantly has business input
Lead to data transmission blocking.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides looped network protecting method and device, cancellation loop and can keep away
Exempt from data transmission blocking.
In a first aspect, the embodiment of the present invention provides a kind of ring net protection method, comprising: preset protection channel；It is examining
When measuring link failure, business transmission is switched to reversed pre-set protection channel by service aisle, described in utilizing
Protection channel makes business be transferred to lower link point and lower ring.
Further, the pre-set protection channel terminates in lower link point.
Further, described that business transmission is switched to reversed pre-set protection channel by service aisle, specifically
It include: that business transmission is switched to reversed pre-set protection channel by service aisle using ring label.
Further, it is described by business transmission by service aisle be switched to reversed pre-set protection channel it
Afterwards, further includes: when detecting the link failure recovery, into Wait-to-Restore WTR state, and judge whether preset time arrives
It reaches；If preset time does not reach, business is set to be transferred to lower link point using the reversed pre-set protection channel；If
Preset time reaches, then business is transferred to lower link point using the service aisle.
Further, judge whether the preset time reaches using timer.
Second aspect, the embodiment of the present invention provide a kind of looped network protection device, comprising: setting unit and switch unit,
In: the setting unit, for presetting protection channel；The switch unit, for when detecting failure, business to be passed
It is defeated that the pre-set protection channel of the reversed setting unit is switched to by service aisle, to make industry using the protection channel
Business is transferred to lower link point and lower ring.
Further, the setting unit is specifically used for presetting the protection channel for terminating in lower link point.
Further, the switch unit is specifically used for: transmitting business using ring label and is switched to instead by service aisle
To pre-set protection channel.
Further, the switch unit is specifically used for: it is described business transmitted be switched to by service aisle it is reversed
After pre-set protection channel, if detecting link failure recovery, enter Wait-to-Restore WTR state, and judge default
Whether the time reaches；If preset time does not reach, it is transferred to business using the reversed pre-set protection channel
Lower link point；If preset time reaches, business is transferred to lower link point using the service aisle.
Further, the switch unit is specifically used for: judging whether preset time reaches using timer.
The third aspect, the embodiment of the present invention provide a kind of ring net protection method, applied to any node in looped network, packet
Include: the node receives the business datum transmitted in looped network；The node is if it is detected that the business datum is by the ring
The transmission link hair being located at after the node on the service aisle that service aisle in net on first direction transmits and described
The business datum is then switched to opposite to the first direction second in the looped network by raw failure by the service aisle
It is transmitted in protection channel on direction；The node is if it is detected that the business datum is by second described in the looped network
The transmission link being located at after the node on protection channel transfer on direction and described protection channel breaks down, then
Terminate the transmission of the business datum.
Further, the protection channel terminates in lower link point.
Further, the nodal test goes out the transmission link generation being located at after the node on the service aisle
Failure specifically includes: the nodal test goes out next node adjacent with the node on the service aisle and the node
Between transmission link break down；The nodal test goes out the chain being located at after the node on the protection channel
Road is broken down, and is specifically included: the nodal test goes out next node and institute adjacent with the node on the protection channel
The transmission link stated between node breaks down.
Fourth aspect, the embodiment of the present invention provide a kind of looped network protection device, applied to any node in looped network, packet
It includes: receiving unit and detection unit, in which: the receiving unit, for receiving the business datum transmitted in looped network；The detection
Unit, for detecting that the received business datum of the receiving unit is logical by the work in the looped network on first direction
When the transmission link after the node on road transmission the and described service aisle breaks down, by the business datum
The protection channel being switched in second direction opposite to the first direction in the looped network by the service aisle is passed
It is defeated；Detecting that the received business datum of the receiving unit is by the protection channel in second direction described in the looped network
When the transmission link after the node on transmission and described protection channel breaks down, the business datum is terminated
Transmission.
Further, the protection channel terminates in lower link point.
Further, the detection unit is specifically used for: detecting that the received business datum of the receiving unit is logical
Cross the service aisle transmission in the looped network on first direction, and next section adjacent with the node on the service aisle
When link between point and the node breaks down, the business datum is switched in the looped network by the service aisle
It is transmitted in protection channel in second direction opposite to the first direction；Detecting the received industry of the receiving unit
Business data be by the protection channel transfer in second direction described in the looped network, and on the protection channel with the section
When link between the adjacent next node of point and the node breaks down, the transmission of the business datum is terminated.
The present invention provides looped network protecting method and devices, by presetting protection channel；It, will when detecting failure
Business transmission is switched to reversed pre-set protection channel by service aisle, transmit business using the protection channel
To lower link point and lower ring, avoid in upper link point to the clockwise path and anticlockwise road of lower link point
The generation of loop when diameter breaks down simultaneously, and avoid data transmission blocking.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the transmission path of looped network protection under normal circumstances in the prior art；
Fig. 2 is the transmission path in the case of link failure in the prior art；
Fig. 3 is that service aisle clockwise and service aisle counterclockwise generate in the case where breaking down simultaneously in the prior art
Loop；
Fig. 4 is a kind of flow chart of ring net protection method provided in an embodiment of the present invention；
Fig. 5 is the transmission path schematic diagram of embodiment one provided in an embodiment of the present invention；
Fig. 6 is the transmission path schematic diagram of embodiment two provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of looped network protection device provided in an embodiment of the present invention；
Fig. 8 is the flow chart of another ring net protection method provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of another looped network protection device provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
Step shown in the flowchart of the accompanying drawings can be in a computer system such as a set of computer executable instructions
It executes.Also, although logical order is shown in flow charts, and it in some cases, can be to be different from herein suitable
Sequence executes shown or described step.
Fig. 4 is a kind of flow chart of ring net protection method provided in an embodiment of the present invention, and the key step of this method describes
It is as follows:
Step 401: presetting protection channel；
Wherein, protection channel includes protection channel and counterclockwise protection channel clockwise.
Further, pre-set protection channel terminates in lower link point.
In this way, protection channel is no longer a closed ring, but as service aisle, terminate in lower link point.
For the scene shown in Fig. 1, setting to the protection channel of ring net protection method provided in an embodiment of the present invention in detail
It sets and is illustrated.In Fig. 1, node A, node B, node C, node D, node E, node F form a looped network, are with node C
Lower link point, the ring net protection method provided according to embodiments of the present invention create service aisle clockwise are as follows: and D- > E- > F- > A- >
B- > C protects channel counterclockwise: B- > A- > F- > E- > D- > C, service aisle counterclockwise: B- > A- > F- > E- > D- > C, protects clockwise
Protect channel: D- > E- > F- > A- > B- > C.
Due to Wrapping looped network in the prior art, channel is protected clockwise and channel is protected to be one counterclockwise and is closed
Ring.That is, business is when on protection channel clockwise and counterclockwise protection channel, reaching lower link point can not under
Ring, it is necessary to by that will protect on channel switching to reversed service aisle and the ring under service aisle.This step is not by up time
Needle protection channel and protection channel counterclockwise are set as a closed ring, but will protect channel and counterclockwise protection clockwise
Channel is arranged at lower link point termination, so that and business can directly descend ring in link point under reaching on protecting channel,
Without being switched on reversed service aisle again.
Step 402: when detecting link failure, business transmission being switched to by service aisle reversed pre-set
Channel is protected, to make business be transferred to lower link point and lower ring using protection channel.
You need to add is that link failure includes that one direction breaks down i.e. in upper link point to the clockwise of lower link point
Service aisle or service aisle counterclockwise break down and twocouese breaks down i.e. in upper link point to the up time of lower link point
The case where needle service aisle and service aisle counterclockwise break down.Wherein, service aisle include service aisle clockwise and
Service aisle counterclockwise.
Reversed pre-set protection channel refers to contrary with the service aisle of the enterprising industry business transmission of looped network
Protect channel.Specifically, if business transmission carries out on service aisle clockwise, protection channel reversed at this time is the inverse time
Needle protects channel；If business transmission carries out on service aisle counterclockwise, protection channel reversed at this time is protection clockwise
Channel.
In practical applications, business transmission can choose as needed transmits on service aisle clockwise, can also select
It selects and is transmitted on service aisle counterclockwise.The load point of service aisle clockwise and service aisle counterclockwise for business transmission
Load.
Here, ring can directly be descended in link point under reaching on protecting channel due to business, business need to only be passed
It is defeated that reversed pre-set protection channel is switched to by service aisle, business transmission can be completed, without the prior art for another example
Like that, protection channel switching is led to reverse operation while business transmission being switched to reverse protection channel by service aisle
Road.In this way, avoiding the formation of Wrapping looped network intermediate ring road.
Further, business transmission is switched to reversed pre-set protection channel by service aisle, specifically included:
Business transmission is switched to reversed pre-set protection channel by service aisle using ring label.
For example, service aisle clockwise is denoted as Rcw, and that protects channel counterclockwise is denoted as Rap, work counterclockwise
That makees channel is denoted as Raw, and that protects channel clockwise is denoted as Rcp.In this way, node A is in every channel by taking node A as an example
On ring label it is corresponding are as follows: Rcw_A, Rap_A, Raw_A, Rcp_A.So, node E transmits business by service aisle counterclockwise
It is switched to protection channel clockwise, can be realized by the way that ring label is exchanged for Rcp_F by Raw_E.
Further, after business transmission is switched to reversed pre-set protection channel by service aisle, also
It include: into Wait-to-Restore (WTR, Wait To Restore) state, and to judge default when detecting link failure recovery
Whether the time reaches；If preset time does not reach, business is set to be transferred to lower link using reversed pre-set protection channel
Point；If preset time reaches, business is transferred to lower link point using service aisle.
Preferably, judge whether preset time reaches, specifically include: judging whether preset time reaches using timer.
Embodiment one
Below shown in Fig. 5 for scene, the case where one direction breaks down, i.e., in upper link point to lower link point
When service aisle clockwise or service aisle counterclockwise break down, ring net protection method provided in an embodiment of the present invention is carried out
It is described in detail.As shown in figure 5, business, by ring on node F, the ring at lower link point C, the link between node E and node D occurs
Failure, method include:
Step 501: presetting service aisle clockwise are as follows: D- > E- > F- > A- > B- > C protects channel counterclockwise: B- >
A- > F- > E- > D- > C, service aisle counterclockwise: B- > A- > F- > E- > D- > C protects channel clockwise: D- > E- > F- > A- > B- >
C；
Step 502: business ring on node F is transmitted using service aisle business counterclockwise and reaches node E；
Step 503: node E detects anticlockwise link failure, and business is transmitted to be fallen by service aisle counterclockwise
Change to protection channel clockwise；
Step 504: node E makes business be transferred to lower link point C using protection channel clockwise, and at lower link point C
Ring.
As can be seen that ring net protection method provided in an embodiment of the present invention is utilized, transmission path F- > E- > F- > A- > B- >
C no longer passes through node D as Fig. 2 and is looped back on service aisle, in this way, reducing the redundant path of business transmission, saves
Network bandwidth, improves switching performance.
Embodiment two
Below shown in Fig. 6 for scene, in the case where twocouese breaks down, i.e., in upper link point to lower link point
Service aisle clockwise and in the case that service aisle counterclockwise breaks down, looped network provided in an embodiment of the present invention is protected
Maintaining method is described in detail.As shown in fig. 6, business is by ring on node F, the ring at lower link point C, between node E and node D
Link break down, the link between node A and node B breaks down, and method includes:
Step 601: presetting service aisle clockwise are as follows: D- > E- > F- > A- > B- > C protects channel counterclockwise: B- >
A- > F- > E- > D- > C, service aisle counterclockwise: B- > A- > F- > E- > D- > C protects channel clockwise: D- > E- > F- > A- > B- >
C；
Step 602: business is transferred to node E using service aisle counterclockwise by business ring on node F；
Step 603: node E detects anticlockwise link failure, and business is transmitted to be fallen by service aisle counterclockwise
Change to protection channel clockwise；
Step 604: node E makes business be transferred to node A using protection channel clockwise；
Step 605: when node A detects clockwise link failure, business being abandoned.
Here, business can only be transmitted and be switched to protection channel counterclockwise by service aisle clockwise by node A, and can not incite somebody to action
Protect channel switching to service aisle counterclockwise clockwise.That is, at this moment node A can only be passed using protection channel clockwise
Defeated business, if clockwise link failure can not be to next node-node transmission, node A abandons business, to avoid loop
It generates.
Embodiment three
For continuing the scene shown in Fig. 6, in the case where twocouese breaks down and restores, the embodiment of the present invention is mentioned
The ring net protection method of confession is described in detail, and method includes:
Step 606: when node A detects the link failure recovery between node A and node B, into WTR state；
Step 607: if node A receives the message that failure is not eliminated between node E and node D, thening follow the steps 608；If
When node A receives the message of Failure elimination between node E and node D, 609 are thened follow the steps；
Step 608: so that business is transferred to lower link point C using protection channel clockwise.
Step 609: entering WTR state, and before preset time arrival, transmit business using protection channel clockwise
To lower link point C；When preset time reaches, business is transferred to lower link point C using service aisle counterclockwise.
The technical solution of the looped network protection of cancellation loop provided by the invention terminates in lower link point by presetting
Protect channel；When detecting failure, business transmission is switched to reversed pre-set protection channel by service aisle, benefit
So that business is transferred to the lower link point and lower ring with the protection channel, avoids the up time in upper link point to lower link point
The generation of loop when the path in needle direction and anticlockwise path are broken down simultaneously.
Fig. 7 is a kind of structural schematic diagram of looped network protection device provided in an embodiment of the present invention, which includes: that setting is single
Member 701 and switch unit 702, in which:
The setting unit 701, for presetting protection channel；
The switch unit 702, for business being transmitted and is switched to reversed set by service aisle when detecting failure
The pre-set protection channel of unit 701 is set, to make business be transferred to lower link point and lower ring using the protection channel.
Further, the setting unit 701 is specifically used for: presetting the protection channel for terminating in lower link point.
Further, the switch unit 702 is specifically used for: transmitting business using ring label and is switched to by service aisle
Reversed pre-set protection channel.
Further, the switch unit 702 is specifically used for: being switched to reversely in described transmit business by service aisle
Pre-set protection channel after, if detecting link failure recovery, enter Wait-to-Restore WTR state, and judge pre-
If whether the time reaches；If preset time does not reach, transmit business using the reversed pre-set protection channel
To lower link point；If preset time reaches, business is transferred to lower link point using the service aisle.
Further, the switch unit 702 is specifically used for: judging whether preset time reaches using timer.
Fig. 8 is the flow chart of another ring net protection method provided in an embodiment of the present invention, and this method is applied in looped network
Any node, key step is described as follows:
Step 801: node receives the business datum transmitted in looped network；
Step 802: node if it is detected that business datum be transmitted by service aisle in looped network on first direction and
The transmission link after the node on service aisle breaks down, then business datum is switched to ring by service aisle
It is transmitted in protection channel in net in the second direction opposite with first direction；Node is if it is detected that business datum is to pass through ring
Protection channel transfer and on protection channel the transmission link generation event being located at after the node in net in second direction
Barrier, then terminate the transmission of business datum.
It should be noted that if first direction is clockwise, then the second direction opposite with first direction is the inverse time
Needle direction；If first direction is counterclockwise, then the second direction opposite with first direction is clockwise.
You need to add is that the transmission link being located at after the node on service aisle, is working as in service aisle
The transmission link being located at after the node in preceding transmission direction is located at institute on the current transmission direction including service aisle
State the transmission link between each adjacent two node after node；Protect the chain being located at after the node on channel
Road is the transmission link being located at after the node on the current transmission direction in protection channel, including working as protection channel
The transmission link between each adjacent two node after the node in preceding transmission direction.For example, in conjunction with Fig. 5
It is shown, business by ring on node F, through anticlockwise service aisle at lower link point C ring, transmission path are as follows: F- > E- >
D- > C, then being located at the transmission link after node E on service aisle in the counterclockwise direction, including between node E to node D
Transmission link and node D to node C between transmission link.
Further, protection channel terminates in lower link point.
Here, since channel setting will be protected to terminate in lower link point, so that under business reaches on protection channel
Ring can be directly descended when link point, without being switched on reversed service aisle again as prior art.
Further, the transmission link after the node that nodal test goes out on service aisle breaks down, and has
Body includes: that the link that goes out between next node and node adjacent with node on service aisle of nodal test breaks down；Node
Detect that the transmission link after the node on protection channel breaks down, specifically include: nodal test goes out to protect
Link on channel between the next node adjacent with node and node breaks down.
Fig. 9 is the structural schematic diagram of another looped network protection device provided in an embodiment of the present invention, which is applied to ring
Any node in net, comprising: receiving unit 901 and detection unit 902, in which:
Receiving unit 901, for receiving the business datum transmitted in looped network；
Detection unit 902, for detecting that the received business datum of receiving unit 901 is by first direction in looped network
On service aisle transmission and the transmission link being located at after the node on service aisle when breaking down, by business number
It is transmitted according to the protection channel being switched in second direction opposite with first direction in looped network by service aisle；It is detecting
The received business datum of receiving unit 901 is by the protection channel transfer in looped network in second direction and protects on channel
When transmission link after the node breaks down, the transmission of business datum is terminated.
Further, protection channel terminates in lower link point.
Further, detection unit 902 is specifically used for: detecting that the received business datum of receiving unit 901 is to pass through
What the service aisle in looped network on first direction transmitted, and between next node and node adjacent with node on service aisle
When link breaks down, the guarantor that business datum is switched to by service aisle in second direction opposite with first direction in looped network
It is transmitted in shield channel；Detecting that the received business datum of receiving unit 901 is by the protection in looped network in second direction
Channel transfer, and when the link on channel between the next node and node adjacent with node being protected to break down, terminate industry
The transmission for data of being engaged in.
Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and use
Embodiment is not intended to limit the invention.Technical staff in any fields of the present invention is taken off not departing from the present invention
Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (12)
1. a kind of ring net protection method is applied to Wrapping mode characterized by comprising
Preset protection channel；
When detecting link failure, business transmission is switched to reversed pre-set protection channel by service aisle, with
Business is set to be transferred to lower link point and lower ring using the protection channel；
When detecting that link failure occurs in twocouese clockwise and anticlockwise, in test point discarding traffic；
The pre-set protection channel terminates in lower link point.
2. ring net protection method according to claim 1, which is characterized in that described transmit business is switched by service aisle
To reversed pre-set protection channel, specifically include:
Business transmission is switched to reversed pre-set protection channel by service aisle using ring label.
3. ring net protection method according to claim 1, which is characterized in that transmit to be fallen by service aisle by business described
It changes to after reversed pre-set protection channel, further includes:
When detecting the link failure recovery, into Wait-to-Restore WTR state, and judge whether preset time reaches；If
Preset time does not reach, then so that business is transferred to lower link point using the reversed pre-set protection channel；If default
Time reaches, then business is transferred to lower link point using the service aisle.
4. ring net protection method according to claim 3, which is characterized in that judge that the preset time is using timer
No arrival.
5. a kind of looped network protection device is applied to Wrapping mode characterized by comprising setting unit and switch unit,
Wherein:
The setting unit, for presetting protection channel；
The switch unit, for when detecting failure, business transmission to be switched to the reversed setting by service aisle
The pre-set protection channel of unit, to make business be transferred to lower link point and lower ring using the protection channel；It is also used to
When detecting that link failure occurs in twocouese clockwise and anticlockwise, in test point discarding traffic；
The setting unit is specifically used for presetting the protection channel for terminating in lower link point.
6. looped network protection device according to claim 5, which is characterized in that the switch unit is specifically used for:
Business transmission is switched to reversed pre-set protection channel by service aisle using ring label.
7. looped network protection device according to claim 5, which is characterized in that the switch unit is specifically used for:
It is described by business transmission reversed pre-set protection channel is switched to by service aisle after, if detecting link
Fault recovery then enters Wait-to-Restore WTR state, and judges whether preset time reaches；If preset time does not reach, utilize
The reversed pre-set protection channel makes business be transferred to lower link point；If preset time reaches, the work is utilized
Make channel and business is transferred to lower link point.
8. looped network protection device according to claim 7, which is characterized in that the switch unit is specifically used for:
Judge whether preset time reaches using timer.
9. a kind of ring net protection method, applied to any node in looped network characterized by comprising
The node receives the business datum transmitted in looped network；
The node if it is detected that the business datum be transmitted by service aisle in the looped network on first direction and
The transmission link after the node on the service aisle breaks down, then by the business datum by the work
It is transmitted in protection channel in the channel switching second direction opposite to the first direction into the looped network；
The node is if it is detected that the business datum is by the protection channel transfer in second direction described in the looped network
And it is described protection channel on be located at the node after transmission link break down, then terminate the biography of the business datum
It is defeated；
The protection channel terminates in lower link point.
10. ring net protection method according to claim 9, which is characterized in that
The transmission link after the node that the nodal test goes out on the service aisle breaks down, specific to wrap
Include: the nodal test goes out the chain between next node adjacent with the node on the service aisle and the node
It breaks down on road；
The transmission link after the node that the nodal test goes out on the protection channel breaks down, specific to wrap
Include: the nodal test goes out the chain on the protection channel between the next node adjacent with the node and the node
It breaks down on road.
11. a kind of looped network protection device, applied to any node in looped network characterized by comprising receiving unit and detection
Unit, in which:
The receiving unit, for receiving the business datum transmitted in looped network；
The detection unit, for detecting that the received business datum of the receiving unit is by first party in the looped network
It, will when the transmission link after the node on upward service aisle transmission the and described service aisle breaks down
The business datum is switched to the guarantor in second direction opposite to the first direction in the looped network by the service aisle
It is transmitted in shield channel；Detecting that the received business datum of the receiving unit is by second direction described in the looped network
On protection channel transfer and the transmission link being located at after the node on protection channel when breaking down, terminate
The transmission of the business datum；
The protection channel terminates in lower link point.
12. looped network protection device according to claim 11, which is characterized in that the detection unit is specifically used for:
Detecting that the received business datum of the receiving unit is passed by the service aisle in the looped network on first direction
It is defeated, and when the link between next node adjacent with the node on the service aisle and the node breaks down,
The business datum is switched in second direction opposite to the first direction in the looped network by the service aisle
It is transmitted in protection channel；Detecting that the received business datum of the receiving unit is by second party described in the looped network
Upward protection channel transfer, and on the protection channel between the next node adjacent with the node and the node
When link breaks down, the transmission of the business datum is terminated.
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| CN108337144A (en) * | 2017-01-20 | 2018-07-27 | 中国移动通信集团公司 | The metropolitan areas TD-LTE return network, path protecting method |
| CN109639549B (en) * | 2017-10-09 | 2021-11-05 | 中兴通讯股份有限公司 | Method for realizing ring network protection and ring network protection system |
| CN113162834A (en) * | 2020-01-07 | 2021-07-23 | 华为技术有限公司 | Data transmission method, equipment and system |
| CN117424777B (en) * | 2023-12-18 | 2024-03-05 | 西安神西电气有限责任公司 | Looped network redundancy control method and system based on distributed logic control |
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