CN103916270B - The system for realizing Link State Pass Through function based on PTN, method and device - Google Patents
The system for realizing Link State Pass Through function based on PTN, method and device Download PDFInfo
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- H04L43/00—Arrangements for monitoring or testing data switching networks
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Abstract
The invention discloses a kind of system for realizing Link State Pass Through function, method and device based on PTN, it is related to PTN device field.System includes the access gateway AG equipment, the first provider edge equipment PE1, the first Provider Equipment P1, the second Provider Equipment P2, the second provider edge equipment PE2 and the business router SR equipment that are sequentially connected with.The present invention by CSF, CCM and RDI message mechanism of the original MPLS TP OAM of PTN device, can detect the exception of Link State, trigger switching for the network equipment；Service damage can not only be reduced, and LPT functions can be realized.The present invention will not produce extra functional module when using, and will not also produce extra expense, can not only simplify treatment mechanism, improve the treatment effeciency of equipment, and can reduce network construction cost and use cost.
Description
Technical field
The present invention relates to PTN（Packet Transport Network, Packet Transport Network）Apparatus field, and in particular to one
Plant the system for realizing Link State Pass Through function, method and device based on PTN.
Background technology
With NGN（Next Generation Network, next generation network）The trend of technology is ripe, SR（Service
Router, business router）Equipment, AG（Access Gateway, access gateway）Equipment has been widely used for soft exchanging network
The core layer of network.AG equipment is located at the Access Layer of flexible exchanging network, main mutual using PTN network between SR equipment and AG equipment
Connection.
In PTN network, the failure transmission between AG equipment and SR equipment mainly uses LPT（link-state pass
Through, Link State Pass Through）Functional realiey.LPT is by the Link-state Pass Through of network local terminal to network opposite end, network opposite end
Can be linked according to the state of network local terminal；LPT can detect and circulate a notice of the failure of Ethernet service user's sidelinks,
Can also detect and circulate a notice of the failure of middle point to point network.
When LPT is used, if local terminal link breaks down, user equipment can detect failure and enable backup link automatically,
Attempt to be communicated with the user equipment of opposite end using backup link；The fault message of local terminal link is sent to opposite end net by LPT
Network edge device, correspondent network edge device closes user-side port immediately, the user equipment of network opposite end is detected failure
Occur, and then enable backup link, realize that network local terminal and network opposite end communicate on backup link with this.
But, existing LPT technologies typically realize the transmission of fault message, special LPT messages using special LPT messages
Need additionally to develop corresponding functional module, the time needed for developing functional module corresponding with special LPT messages is more long,
Use cost is not only increased, and it is more complicated to increase the treatment mechanism of functional module.
The content of the invention
For defect present in prior art, link shape is realized based on PTN it is an object of the invention to provide a kind of
System, the method and device of state break-through function, can not only simplify treatment mechanism when the present invention is used, improve the treatment effect of equipment
Rate, and network construction cost and use cost can be reduced.
To achieve the above objectives, the present invention is adopted the technical scheme that：It is a kind of that Link State Pass Through work(is realized based on PTN
Can system, including be sequentially connected with access gateway AG equipment, the first provider edge equipment PE1, the first Provider Equipment P1,
Second Provider Equipment P2, the second provider edge equipment PE2 and business router SR equipment；
When network failure betides UNI user sides, PE1 sends to AG equipment communication failure information；PE1 starts pseudo-wire
PW layers of Client Signal Fail CSF processing modules；Judge that Link State breaks down, PW layers of PE1 of CSF processing modules are continuous
Generation type TYPE field is 000 CSF signals, PE1 by CSF signals and corresponding service message, by P1 and P2 send to
The communication of PE2, PE2 interruption U NI sides, communication failure information is sent to SR equipment；AG equipment and SR equipment switch communication service
To reserve link, AG equipment and SR equipment are communicated by reserve link；
When network failure betides NNI network sides, PE1 sends out PW layers of continuity detection message CCM by P1 and P2
Deliver to PE2；PE2 sends to PE1 PW layers of CCM by P2 and P1；Whether detection PE1, PE2 receives CCM respectively,
If PE1, PE2 do not receive CCM, PE1 reports continuity detection-loss of connectivity CC-LOC information to user, PE1
The communication of interruption U NI sides simultaneously sends communication failure information to AG equipment；PE2 reports CC-LOC information to user, PE2 interruption Us NI
The communication of side simultaneously sends communication failure information to SR equipment；AG equipment and SR equipment switch to reserve link, AG communication service
Equipment and SR equipment are communicated by reserve link；
If PE1 receives CCM, PE2 and do not receive CCM, PE2 reports CC-LOC information to user, the communication of PE2 interruption U NI sides,
And send communication failure information to SR equipment；PE2 sends remote bug and indicates RDI information, PE1 to interrupt by P2 and P1, to PE1
The communication of UNI sides simultaneously sends communication failure information to AG equipment；AG equipment and SR equipment switch to standby chain communication service
Road, AG equipment and SR equipment are communicated by reserve link；
If PE1 does not receive CCM, PE2 and receives CCM, PE1 reports CC-LOC information to user, the communication of PE1 interruption U NI sides,
And send communication failure information to AG equipment；PE1 sends RDI information by P1 and P2 to PE2, the communication of PE2 interruption U NI sides,
And send communication failure information to SR equipment；AG equipment and SR equipment switch to reserve link, AG equipment and SR communication service
Equipment is communicated by reserve link.
A kind of method for realizing Link State Pass Through function based on PTN for being applied to said system, comprises the following steps：
A, the position for determining network failure generation, if network failure betides UNI sides, go to step B, if network failure is sent out
NNI sides are born in, step D is gone to；
B, PE1 send to AG equipment communication failure information；PE1 starts PW layers of CSF processing modules；Judge Link State
Break down, PW layers of PE1 of CSF processing modules continuously generate the CSF signals that TYPE field is 000, PE1 by CSF signals and
Corresponding service message, is sent to PE2 by P1 and P2, goes to step C；
The communication of C, PE2 interruption U NI sides, communication failure information is sent to SR equipment；AG equipment and SR equipment are by communication industry
Business is switched to reserve link, and AG equipment and SR equipment are communicated by reserve link；
D, PE1 send to PE2 PW layers of continuity detection message CCM by P1 and P2；PE2 passes through PW layers of CCM
P2 and P1 are sent to PE1；Whether detection PE1, PE2 receives CCM respectively,
If PE1, PE2 do not receive CCM, PE1 reports CC-LOC information to user, the communication of PE1 interruption U NI sides and to
AG equipment sends communication failure information；PE2 reports CC-LOC information to user, the communication of PE2 interruption U NI sides and to SR equipment
Send communication failure information；Go to step E；
If PE1 receives CCM, PE2 and do not receive CCM, PE2 reports CC-LOC information to user, the communication of PE2 interruption U NI sides,
And send communication failure information to SR equipment；PE2 sends RDI information by P2 and P1 to PE1, the communication of PE1 interruption U NI sides,
And send communication failure information to AG equipment；Go to step E；
If PE1 does not receive CCM, PE2 and receives CCM, PE1 reports CC-LOC information to user, the communication of PE1 interruption U NI sides,
And send communication failure information to AG equipment；PE1 sends RDI information by P1 and P2 to PE2, the communication of PE2 interruption U NI sides,
And send communication failure information to SR equipment；Go to step E；
E, AG equipment and SR equipment switch to reserve link communication service, and AG equipment and SR equipment are logical by reserve link
Letter.
Judge that Link State breaks down including below scheme on the basis of such scheme, in step B：Detection link letter
Number whether lose, if so, then Link State breaks down, otherwise Link State does not break down, detect that link signal is again
No loss.
On the basis of such scheme, the communication of PE2 interruption Us NI sides includes below scheme in step C：Disconnect PE2 user
The port connection of side.
On the basis of such scheme, the communication of PE2 interruption Us NI sides includes below scheme in step C：Close the use of PE2
Family side sends laser.
On the basis of such scheme, if PE1, PE2 receive CCM in step D, continue to detect whether PE1, PE2 receive
CCM。
On the basis of such scheme, the communication of PE1 interruption Us NI sides includes below scheme in step D：Disconnect PE1 user
The port connection of side；The communication of PE2 interruption Us NI sides includes below scheme in step D：Disconnect the port connection of PE2 user sides.
On the basis of such scheme, the communication of PE1 interruption Us NI sides includes below scheme in step D：Close the use of PE1
Family side sends laser；The communication of PE2 interruption Us NI sides includes below scheme in step D：The user side for closing PE2 sends laser
Device.
A kind of device for realizing Link State Pass Through function based on PTN for being applied to the above method, including failure occurs
Determining module, UNI sidelinks condition judgment module, UNI sides reserve links communication module, NNI sidelinks condition judgment module and
NNI sides reserve link communication module；
Failure occur determining module respectively with UNI sidelinks condition judgment module, NNI sidelinks condition judgment module phases
Even, UNI sidelinks condition judgment module is connected with UNI sides reserve link communication module, NNI sidelinks condition judgment module and
NNI sides reserve link communication module is connected；
There is determining module in failure, be used for：Determine the position that network failure occurs, if network failure betides UNI sides, to
UNI sidelinks condition judgment module sends fault-signal；If network failure betides NNI sides, sent out to NNI sides CSF opening modules
Send fault-signal；
UNI sidelinks condition judgment modules, are used for：After receiving the fault-signal that failure occurs determining module transmission, PE1 will
Communication failure information is sent to AG equipment；PE1 starts PW layers of CSF processing modules；Judge that Link State breaks down, PE1's
PW layers of CSF processing modules continuously generate the CSF signals that TYPE field is 000, PE1 by CSF signals and corresponding service message,
Sent to PE2 by P1 and P2, signal of communication is sent to UNI sides reserve link communication module；
UNI sides reserve link communication module, is used for：After receiving the signal of communication that UNI sidelinks condition judgment module sends,
The communication of PE2 interruption U NI sides, communication failure information is sent to SR equipment；AG equipment and SR equipment switch to standby communication service
With link, AG equipment and SR equipment are communicated by reserve link；
NNI sidelinks condition judgment modules, are used for：PE1 sends PW layers of continuity detection message CCM by P1 and P2
To PE2；PE2 sends to PE1 PW layers of CCM by P2 and P1；Whether detection PE1, PE2 receives CCM respectively,
If PE1, PE2 do not receive CCM, PE1 reports CC-LOC information to user, the communication of PE1 interruption U NI sides and to
AG equipment sends communication failure information；PE2 reports CC-LOC information to user, the communication of PE2 interruption U NI sides and to SR equipment
Send communication failure information；Signal of communication is sent to NNI sides reserve link communication module；
If PE1 receives CCM, PE2 and do not receive CCM, PE2 reports CC-LOC information to user, the communication of PE2 interruption U NI sides,
And send communication failure information to SR equipment；PE2 sends RDI information by P2 and P1 to PE1, the communication of PE1 interruption U NI sides,
And send communication failure information to AG equipment；Signal of communication is sent to NNI sides reserve link communication module；
If PE1 does not receive CCM, PE2 and receives CCM, PE1 reports CC-LOC information to user, the communication of PE1 interruption U NI sides,
And send communication failure information to AG equipment；PE1 sends RDI information by P1 and P2 to PE2, the communication of PE2 interruption U NI sides,
And send communication failure information to SR equipment；Signal of communication is sent to NNI sides reserve link communication module；
NNI sides reserve link communication module, is used for：After receiving the signal of communication that NNI sidelinks condition judgment module sends,
AG equipment and SR equipment switch to reserve link communication service, and AG equipment and SR equipment are communicated by reserve link.
Compared with prior art, the advantage of the invention is that：
When user side of the invention or network side break down, user side and network side can be original by PTN device
CSF, CCM and RDI message mechanism of MPLS-TP OAM, detect the exception of Link State and in time by Link State abnormal information
Network side or user side are transferred to, and then trigger the network equipment（AG equipment and SR equipment）Switch；Industry can not only be reduced
Business is damaged, and can realize LPT functions.Compared with the special LPT messages for needing extra development function module in the prior art,
The present invention will not produce extra functional module when using, and will not also produce extra expense, can not only simplify treatment mechanism,
The treatment effeciency of raising equipment, and network construction cost and use cost can be reduced.
Brief description of the drawings
Fig. 1 be the embodiment of the present invention in PTN user sides break down after realize reserve link communication structural representation；
Fig. 2 be the embodiment of the present invention in PTN network side break down after realize reserve link communication structural representation.
Specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Referring to shown in Fig. 1, Fig. 2, the system for realizing Link State Pass Through function based on PTN in the embodiment of the present invention,
Including the AG being sequentially connected with（Access gateway, access gateway）Equipment, PE1（Provider Edge1, the first operator side
Edge equipment）、P1（First Provider Equipment）、P2（Second Provider Equipment）、PE2（Provider Edge2, the second operator side
Edge equipment）And SR（Service router, full-service router）Equipment.
The method for realizing Link State Pass Through function based on PTN in the embodiment of the present invention, comprises the following steps：
S1：The position that network failure occurs is determined, if network failure betides UNI sides（User side）, step S2 is gone to, if
Network failure betides NNI sides（Network side）, go to step S7.
S2：Shown in Figure 1, PE1 sends to AG equipment communication failure information；PE1 starts PW（Pseudo Wire, it is pseudo-
Line）The CSF of layer（Customer Signal Failure, Client Signal Fail）Processing module, goes to step S3.
S3：Whether detection Link State breaks down, if link signal is lost, Link State breaks down, and goes to step
Rapid S4；If Link State is not lost, Link State does not break down, and re-executes step S3.
S4：The CSF processing modules of PW layers of PE1 continuously generate TYPE（Type）Field is 000 CSF signals, and PE1 will
CSF signals and corresponding service message, are sent to PE2 by P1 and P2, go to step S5.
S5：The communication of PE2 interruption U NI sides, communication failure information is sent to SR equipment, goes to step S6.
The communication of PE2 interruption U NI sides includes below scheme：Disconnect the port connection of PE2 user sides；Or close PE2's
User side sends laser.
S6：AG equipment and SR equipment switch to reserve link communication service, and AG equipment and SR equipment pass through reserve link
Communication.
S7：Shown in Figure 2, PE1 is by PW layers of CCM（Continuous Check Message, continuity detection disappears
Breath）Sent to PE2 by P1 and P2；PE2 sends to PE1 PW layers of CCM by P2 and P1.
S8：Whether detection PE1, PE2 receives CCM respectively, if PE1, PE2 receive CCM, link failure does not occur in centre
The network link of point-to-point, re-executes step S8；
If PE1, PE2 do not receive CCM, there is the network link in middle point-to-point, go to step S9 in link failure；
If PE1 receives CCM, PE2 and do not receive CCM, PE1 cannot send CCM, go to step S10；
If PE1 does not receive CCM, PE2 and receives CCM, PE2 cannot send CCM, go to step S11.
S9：PE1 reports CC-LOC（Continuous Check-Loss of Connectivity, continuity detection-even
The general character is lost）Information sends communication failure information to user, the communication of PE1 interruption U NI sides and to AG equipment；
PE2 reports CC-LOC information to user, and the communication of PE2 interruption U NI sides simultaneously sends communication failure letter to SR equipment
Breath；Go to step S12.
S10：PE2 reports CC-LOC information to user, and the communication of PE2 interruption U NI sides simultaneously sends communication failure to SR equipment
Information；
PE2 sends RDI by P2 and P1 to PE1（Remote bug is indicated）Information, the communication of PE1 interruption U NI sides and to
AG equipment sends communication failure information；Go to step S12.
S11：PE1 reports CC-LOC information to user, and the communication of PE1 interruption U NI sides simultaneously sends communication failure to AG equipment
Information；
PE1 sends RDI information by P1 and P2 to PE2, and the communication of PE2 interruption U NI sides simultaneously sends communication to SR equipment
Fault message；Go to step S12.
S12：AG equipment and SR equipment switch to reserve link communication service, and AG equipment and SR equipment pass through reserve link
Communication.
In S9~S11, the communication of PE1 interruption U NI sides includes below scheme：Disconnect the port connection of PE1 user sides；Or
The user side for closing PE1 sends laser.The communication of PE2 interruption U NI sides includes below scheme：Disconnect the port of PE2 user sides
Connection；Or close the user side transmission laser of PE2.
The device for realizing Link State Pass Through function based on PTN in the embodiment of the present invention, including failure determines
Module, UNI sidelinks condition judgment module, UNI sides reserve links communication module, NNI sidelinks condition judgment module and NNI sides
Reserve link communication module.
Failure occur determining module respectively with UNI sidelinks condition judgment module, NNI sidelinks condition judgment module phases
Even, UNI sidelinks condition judgment module is connected with UNI sides reserve link communication module, NNI sidelinks condition judgment module and
NNI sides reserve link communication module is connected.
There is determining module in failure, be used for：Determine the position that network failure occurs, if network failure betides UNI sides, to
UNI sidelinks condition judgment module sends fault-signal；If network failure betides NNI sides, sent out to NNI sides CSF opening modules
Send fault-signal.
UNI sidelinks condition judgment modules, are used for：After receiving the fault-signal that failure occurs determining module transmission, PE1 will
Communication failure information is sent to AG equipment；PE1 starts PW layers of CSF processing modules；Judge that Link State breaks down, PE1's
PW layers of CSF processing modules continuously generate the CSF signals that TYPE field is 000, PE1 by CSF signals and corresponding service message,
Sent to PE2 by P1 and P2, signal of communication is sent to UNI sides reserve link communication module.
UNI sides reserve link communication module, is used for：After receiving the signal of communication that UNI sidelinks condition judgment module sends,
The communication of PE2 interruption U NI sides, communication failure information is sent to SR equipment；AG equipment and SR equipment switch to standby communication service
With link, AG equipment and SR equipment are communicated by reserve link.
NNI sidelinks condition judgment modules, are used for：PE1 sends PW layers of continuity detection message CCM by P1 and P2
To PE2；PE2 sends to PE1 PW layers of CCM by P2 and P1；Whether detection PE1, PE2 receives CCM respectively,
If PE1, PE2 do not receive CCM, PE1 reports CC-LOC information to user, the communication of PE1 interruption U NI sides and to
AG equipment sends communication failure information；PE2 reports CC-LOC information to user, the communication of PE2 interruption U NI sides and to SR equipment
Send communication failure information；Signal of communication is sent to NNI sides reserve link communication module.
If PE1 receives CCM, PE2 and do not receive CCM, PE2 reports CC-LOC information to user, the communication of PE2 interruption U NI sides,
And send communication failure information to SR equipment；PE2 sends RDI information by P2 and P1 to PE1, the communication of PE1 interruption U NI sides,
And send communication failure information to AG equipment；Signal of communication is sent to NNI sides reserve link communication module.
If PE1 does not receive CCM, PE2 and receives CCM, PE1 reports CC-LOC information to user, the communication of PE1 interruption U NI sides,
And send communication failure information to AG equipment；PE1 sends RDI information by P1 and P2 to PE2, the communication of PE2 interruption U NI sides,
And send communication failure information to SR equipment；Signal of communication is sent to NNI sides reserve link communication module.
NNI sides reserve link communication module, is used for：After receiving the signal of communication that NNI sidelinks condition judgment module sends,
AG equipment and SR equipment switch to reserve link communication service, and AG equipment and SR equipment are communicated by reserve link.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
On the premise of the principle of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (9)
1. a kind of system for realizing Link State Pass Through function based on PTN, it is characterised in that：Including the access network being sequentially connected with
Close AG equipment, the first provider edge equipment PE1, the first Provider Equipment P1, the second Provider Equipment P2, the second operator side
Edge equipment PE2 and business router SR equipment；
When network failure betides UNI user sides, PE1 sends to AG equipment communication failure information；PE1 starts PW layers of pseudo-wire
Client Signal Fail CSF processing modules；Judge that Link State breaks down, PW layers of PE1 of CSF processing modules are continuously generated
Type TYPE field is 000 CSF signals, and PE1 sends to PE2 CSF signals and corresponding service message by P1 and P2,
The communication of PE2 interruption U NI sides, communication failure information is sent to SR equipment；AG equipment and SR equipment switch to standby communication service
With link, AG equipment and SR equipment are communicated by reserve link；
When network failure betides NNI network sides, PE1 by PW layers of continuity detection message CCM by P1 and P2 send to
PE2；PE2 sends to PE1 PW layers of CCM by P2 and P1；Whether detection PE1, PE2 receives CCM respectively,
If PE1, PE2 do not receive CCM, PE1 reports continuity detection-loss of connectivity CC-LOC information to user, and PE1 is interrupted
The communication of UNI sides simultaneously sends communication failure information to AG equipment；PE2 reports CC-LOC information to user, PE2 interruption U NI sides
Communicate and send communication failure information to SR equipment；AG equipment and SR equipment switch to reserve link, AG equipment communication service
Communicated by reserve link with SR equipment；
If PE1 receives CCM, PE2 and do not receive CCM, PE2 reports CC-LOC information to user, the communication of PE2 interruption U NI sides and to
SR equipment sends communication failure information；PE2 sends remote bug and indicates RDI information, PE1 interruption Us NI by P2 and P1, to PE1
The communication of side simultaneously sends communication failure information to AG equipment；AG equipment and SR equipment switch to reserve link, AG communication service
Equipment and SR equipment are communicated by reserve link；
If PE1 does not receive CCM, PE2 and receives CCM, PE1 reports CC-LOC information to user, the communication of PE1 interruption U NI sides and to
AG equipment sends communication failure information；PE1 sends RDI information by P1 and P2 to PE2, the communication of PE2 interruption U NI sides and to
SR equipment sends communication failure information；AG equipment and SR equipment switch to reserve link, AG equipment and SR equipment communication service
Communicated by reserve link.
2. a kind of method for realizing Link State Pass Through function based on PTN for being applied to system described in claim 1, its feature
It is to comprise the following steps：
A, the position for determining network failure generation, if network failure betides UNI sides, go to step B, if network failure is betided
NNI sides, go to step D；
B, PE1 send to AG equipment communication failure information；PE1 starts PW layers of CSF processing modules；Judge that Link State occurs
Failure, PW layers of PE1 of CSF processing modules continuously generate the CSF signals that TYPE field is 000, and PE1 is by CSF signals and corresponding
Service message, sent to PE2 by P1 and P2, go to step C；
The communication of C, PE2 interruption U NI sides, communication failure information is sent to SR equipment；AG equipment and SR equipment fall communication service
Reserve link is shifted to, AG equipment and SR equipment are communicated by reserve link；
D, PE1 send to PE2 PW layers of continuity detection message CCM by P1 and P2；PE2 by PW layers of CCM by P2 and
P1 is sent to PE1；Whether detection PE1, PE2 receives CCM respectively,
If PE1, PE2 do not receive CCM, PE1 reports CC-LOC information to user, and the communication of PE1 interruption U NI sides simultaneously sets to AG
Preparation send communication failure information；PE2 reports CC-LOC information to user, and the communication of PE2 interruption U NI sides simultaneously sends to SR equipment
Communication failure information；Go to step E；
If PE1 receives CCM, PE2 and do not receive CCM, PE2 reports CC-LOC information to user, the communication of PE2 interruption U NI sides and to
SR equipment sends communication failure information；PE2 sends RDI information by P2 and P1 to PE1, the communication of PE1 interruption U NI sides and to
AG equipment sends communication failure information；Go to step E；
If PE1 does not receive CCM, PE2 and receives CCM, PE1 reports CC-LOC information to user, the communication of PE1 interruption U NI sides and to
AG equipment sends communication failure information；PE1 sends RDI information by P1 and P2 to PE2, the communication of PE2 interruption U NI sides and to
SR equipment sends communication failure information；Go to step E；
E, AG equipment and SR equipment switch to reserve link communication service, and AG equipment and SR equipment are communicated by reserve link.
3. the method for realizing Link State Pass Through function of PTN is based on as claimed in claim 2, it is characterised in that：In step B
Judge that Link State breaks down including below scheme：Whether detection link signal is lost, if so, then Link State occurs event
Barrier, otherwise Link State does not break down, and detects whether link signal is lost again.
4. the method for realizing Link State Pass Through function of PTN is based on as claimed in claim 2, it is characterised in that：In step C
The communication of PE2 interruption U NI sides includes below scheme：Disconnect the port connection of PE2 user sides.
5. the method for realizing Link State Pass Through function of PTN is based on as claimed in claim 2, it is characterised in that：In step C
The communication of PE2 interruption U NI sides includes below scheme：The user side for closing PE2 sends laser.
6. the method for realizing Link State Pass Through function of PTN is based on as claimed in claim 2, it is characterised in that：In step D
If PE1, PE2 receive CCM, continue to detect whether PE1, PE2 receive CCM.
7. the method for realizing Link State Pass Through function of PTN is based on as claimed in claim 2, it is characterised in that：In step D
The communication of PE1 interruption U NI sides includes below scheme：Disconnect the port connection of PE1 user sides；PE2 interruption Us NI sides in step D
Communication includes below scheme：Disconnect the port connection of PE2 user sides.
8. the method for realizing Link State Pass Through function of PTN is based on as claimed in claim 2, it is characterised in that：In step D
The communication of PE1 interruption U NI sides includes below scheme：The user side for closing PE1 sends laser；PE2 interruption Us NI sides in step D
Communication include below scheme：The user side for closing PE2 sends laser.
9. a kind of device for realizing Link State Pass Through function based on PTN for being applied to claim 2 methods described, its feature
It is：There is determining module, UNI sidelinks condition judgment module, UNI sides reserve links communication module, NNI side chains including failure
Line state judge module and NNI sides reserve link communication module；
Determining module and be connected with UNI sidelinks condition judgment module, NNI sidelinks condition judgment modules respectively in failure, UNI there is
Sidelinks condition judgment module is connected with UNI sides reserve link communication module, and NNI sidelinks condition judgment module is standby with NNI sides
It is connected with link communication module；
There is determining module in failure, be used for：The position that network failure occurs is determined, if network failure betides UNI sides, to UNI
Sidelinks condition judgment module sends fault-signal；If network failure betides NNI sides, to NNI sidelinks condition judgment modules
Send fault-signal；
UNI sidelinks condition judgment modules, are used for：After receiving the fault-signal that failure occurs determining module transmission, PE1 will communicate
Fault message is sent to AG equipment；PE1 starts PW layers of CSF processing modules；Judge that Link State breaks down, PW layers of PE1
CSF processing modules continuously generate the CSF signals that TYPE field is 000, PE1 passes through CSF signals and corresponding service message
P1 and P2 are sent to PE2, and signal of communication is sent to UNI sides reserve link communication module；
UNI sides reserve link communication module, is used for：After receiving the signal of communication that UNI sidelinks condition judgment module sends, PE2
The communication of interruption U NI sides, communication failure information is sent to SR equipment；AG equipment and SR equipment switch to standby chain communication service
Road, AG equipment and SR equipment are communicated by reserve link；
NNI sidelinks condition judgment modules, are used for：PE1 by PW layers of continuity detection message CCM by P1 and P2 send to
PE2；PE2 sends to PE1 PW layers of CCM by P2 and P1；Whether detection PE1, PE2 receives CCM respectively,
If PE1, PE2 do not receive CCM, PE1 reports CC-LOC information to user, and the communication of PE1 interruption U NI sides simultaneously sets to AG
Preparation send communication failure information；PE2 reports CC-LOC information to user, and the communication of PE2 interruption U NI sides simultaneously sends to SR equipment
Communication failure information；Signal of communication is sent to NNI sides reserve link communication module；
If PE1 receives CCM, PE2 and do not receive CCM, PE2 reports CC-LOC information to user, the communication of PE2 interruption U NI sides and to
SR equipment sends communication failure information；PE2 sends RDI information by P2 and P1 to PE1, the communication of PE1 interruption U NI sides and to
AG equipment sends communication failure information；Signal of communication is sent to NNI sides reserve link communication module；
If PE1 does not receive CCM, PE2 and receives CCM, PE1 reports CC-LOC information to user, the communication of PE1 interruption U NI sides and to
AG equipment sends communication failure information；PE1 sends RDI information by P1 and P2 to PE2, the communication of PE2 interruption U NI sides and to
SR equipment sends communication failure information；Signal of communication is sent to NNI sides reserve link communication module；
NNI sides reserve link communication module, is used for：After receiving the signal of communication that NNI sidelinks condition judgment module sends, AG sets
Standby and SR equipment switches to reserve link communication service, and AG equipment and SR equipment are communicated by reserve link.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108449.XA CN103916270B (en) | 2014-03-21 | 2014-03-21 | The system for realizing Link State Pass Through function based on PTN, method and device |
| PCT/CN2015/071917 WO2015139534A1 (en) | 2014-03-21 | 2015-01-30 | System, method and apparatus for achieving link-state pass through function based on ptn |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410108449.XA CN103916270B (en) | 2014-03-21 | 2014-03-21 | The system for realizing Link State Pass Through function based on PTN, method and device |
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| CN103916270A CN103916270A (en) | 2014-07-09 |
| CN103916270B true CN103916270B (en) | 2017-06-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103916270B (en) * | 2014-03-21 | 2017-06-13 | 烽火通信科技股份有限公司 | The system for realizing Link State Pass Through function based on PTN, method and device |
| CN105429841B (en) * | 2014-09-15 | 2020-01-07 | 中兴通讯股份有限公司 | NNI PING implementation method and device |
| CN104660451B (en) * | 2015-02-28 | 2018-02-06 | 山东华辰泰尔信息科技股份有限公司 | A kind of across disk guard method based on PTN tunnels |
| CN108055145B (en) * | 2017-11-13 | 2021-08-31 | 广东电网有限责任公司广州供电局 | PTN network fault transfer method and system |
| CN112468394B (en) * | 2019-09-09 | 2022-09-27 | 中国移动通信有限公司研究院 | Protection switching method, node equipment and storage medium |
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| CN101662398A (en) * | 2009-10-14 | 2010-03-03 | 烽火通信科技股份有限公司 | Method for transferring alarm of client access link in transmission system |
| CN102282805A (en) * | 2011-05-26 | 2011-12-14 | 华为技术有限公司 | Method for service protection and access device |
| CN102624568A (en) * | 2012-04-11 | 2012-08-01 | 中兴通讯股份有限公司 | Method and device for noticing failure state of side link in access circuit |
| CN102916843A (en) * | 2012-11-19 | 2013-02-06 | 烽火通信科技股份有限公司 | Link protection implementation method for bearing point-to-point private line service by PTN (Packet Transport Network) network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938419A (en) * | 2010-09-10 | 2011-01-05 | 中兴通讯股份有限公司 | Link state delivery method and device of packet transport network |
| CN102468977B (en) * | 2010-11-19 | 2016-03-30 | 中兴通讯股份有限公司 | The guard method of Packet Transport Network and device |
| CN102812750B (en) * | 2012-02-10 | 2015-08-19 | 华为技术有限公司 | Fault handling method, grouping conveying network and node in grouping conveying network |
| CN103580931A (en) * | 2013-11-25 | 2014-02-12 | 烽火通信科技股份有限公司 | Link protection method for PTN (Packet Transport Network) carrying point-to-point private line service |
| CN103916270B (en) * | 2014-03-21 | 2017-06-13 | 烽火通信科技股份有限公司 | The system for realizing Link State Pass Through function based on PTN, method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101662398A (en) * | 2009-10-14 | 2010-03-03 | 烽火通信科技股份有限公司 | Method for transferring alarm of client access link in transmission system |
| CN102282805A (en) * | 2011-05-26 | 2011-12-14 | 华为技术有限公司 | Method for service protection and access device |
| CN102624568A (en) * | 2012-04-11 | 2012-08-01 | 中兴通讯股份有限公司 | Method and device for noticing failure state of side link in access circuit |
| CN102916843A (en) * | 2012-11-19 | 2013-02-06 | 烽火通信科技股份有限公司 | Link protection implementation method for bearing point-to-point private line service by PTN (Packet Transport Network) network |
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| WO2015139534A1 (en) | 2015-09-24 |
| CN103916270A (en) | 2014-07-09 |
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