CN107592260A - VPWS BYPASS pretection switch method and system based on quick heavy-route - Google Patents

VPWS BYPASS pretection switch method and system based on quick heavy-route Download PDF

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Publication number
CN107592260A
CN107592260A CN201710862645.XA CN201710862645A CN107592260A CN 107592260 A CN107592260 A CN 107592260A CN 201710862645 A CN201710862645 A CN 201710862645A CN 107592260 A CN107592260 A CN 107592260A
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frr
vpws
bypass
dvp
route
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CN201710862645.XA
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CN107592260B (en
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孙小军
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Fiberhome Telecommunication Technologies Co Ltd
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Fiberhome Telecommunication Technologies Co Ltd
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Priority to CN201710862645.XA priority Critical patent/CN107592260B/en
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Priority to PCT/CN2018/102472 priority patent/WO2019056922A1/en
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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
    • H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention discloses a kind of VPWS BYPASS pretection switch method and system based on quick heavy-route, are related to packet tranmission techniques field, and this method comprises the following steps：Mark the FRR ID of all protection business；The OAM alarm statuses of each protection business are read, according to whether the FRR ID state values that warning information determines each protection business be present；Assemble the FRR ID state values of each protection business and write FRR list items.VP FRR mechanism is introduced in VPWS BYPASS forwarding processes, determines to be forwarded using main DVP or standby DVP according to FRR list items.The present invention can reduce switching time, and efficiency is switched in raising.

Description

VPWS BYPASS pretection switch method and system based on quick heavy-route
Technical field
The present invention relates to packet tranmission techniques field, and in particular to a kind of VPWS BYPASS based on quick heavy-route are protected Protective switching method and system.
Background technology
VPWS (Virtual Private Wire Service, virtual pseudo wires service), is a kind of L2VPN technologies.VPWS BYPASS namely VPWS bypasses, are a kind of VPWS protection techniques.
The course of work of VPWS BYPASS pretection switch is as follows：Application program is in APS (Automatic Protection Switching, APS) OAM (Operations, Administration, and are read in thread Maintenance Operations, Administration and Maintenances) alarm, OAM, which is alerted, mainly includes APS, CV (Connectivity Verification, detection of connectivity) and CSF (Client Signal Fail, Client Signal Fail) alarms, according to these OAM alarms, which are adjudicated and perform service protection, switches, and then updates APS states.Service protection switch function is mainly in APS threads Complete, in addition the acquisition for the relatively not high alarm of other requirement of real-time, state and performance is then in low priority line Performed in journey.In the case of configuring a plurality of business, by said process, business is carried out one by one for the action of pretection switch.
But the OAM such as existing CV, CSF alarm list items are all that an entry only includes an OAM Information, list item utilization rate It is low.In addition when execution is switched, call the api interface function provided by driving to carry out SVP to DVP binding again by application layer and move Make, thus perform N bars VPWS switch need carry out 3N time again binding action.Although this scheme is realized simply, in business entry It can also meet carrier class requirement in the case that number is few.But then since it is desired that read-write is substantial amounts of when business configuration amount is big NP (Network Processor, network processing unit) list items and make switching time long, its CPU usage also accordingly increases.
The content of the invention
For defect present in prior art, it is an object of the invention to provide one kind can reduce switching time, improve Switch the VPWS BYPASS pretection switch methods based on quick heavy-route of efficiency.
To achieve the above objectives, the present invention adopts the technical scheme that：
A kind of VPWS BYPASS pretection switch methods based on quick heavy-route, this method comprise the following steps：
Mark the FRR ID of all protection business；
The OAM alarm statuses of each protection business are read, according to whether warning information be present determines each protection business FRR ID state values；
Assemble the FRR ID state values of each protection business and write FRR list items；And
VP FRR mechanism is introduced in VPWS BYPASS forwarding processes, is determined according to FRR list items using main DVP or standby DVP Forwarded.
On the basis of above-mentioned technical proposal, VP FRR mechanism, VPWS are introduced in VPWS BYPASS forwarding processes BYPASS forwarding processes search SVP, enable VP FRR, search FRR ID using FRR TABLE, are selected according to FRR ID state values Main DVP or standby DVP are forwarded.
, should if the OAM alarm statuses of any protection business have warning information on the basis of above-mentioned technical proposal The FRR ID state values of protection business are designated as 1, if warning information is not present, the FRR ID state values of the protection business are designated as 0。
On the basis of above-mentioned technical proposal, FRR TABLE search FRR ID, if FRR ID are 1, are entered from standby DVP Row forwarding, if FRR ID are 1, forwarded from main DVP.
On the basis of above-mentioned technical proposal, methods described also includes the step of increase OAM alerts the instance number of list item.
On the basis of above-mentioned technical proposal, the instance number of increase OAM alarm list items, OAM is set to alert each bar of list item The instance number that mesh is included maximizes.
On the basis of above-mentioned technical proposal, the instance number that each entry of FRR list items is included maximizes.
It is an object of the invention to provide one kind can reduce switching time, improve switch efficiency based on quick heavy-route VPWS BYPASS pretection switch systems.
To achieve the above objectives, the present invention adopts the technical scheme that：
A kind of VPWS BYPASS pretection switch systems based on quick heavy-route, including：
Mark module, it is used for the FRR ID for marking all protection business；
Read module, it is used for the OAM alarm statuses for reading each protection business；
Judging module, it is used to judge that OAM alarm statuses whether there is warning information, and determines each protection business FRR ID state values；
Module is assembled, it is used to assemble the FRR ID state values of each protection business and writes FRR list items；And
Execution module, it is included in the VP FRR mechanism introduced in VPWS BYPASS forwarding processes, and the execution module Determine to be forwarded using main DVP or standby DVP according to FRR list items.
On the basis of above-mentioned technical proposal, the system also includes list item optimization module, and the list item optimization module is used In the instance number of increase OAM alarm list items.
On the basis of above-mentioned technical proposal, the execution module is NP chips.
Compared with prior art, the advantage of the invention is that：
(1) the VPWS BYPASS pretection switch methods based on quick heavy-route of the invention, are compared with traditional mode, Traditional mode does not introduce VP FRR mechanism, without DVP FRR functions, there was only 1 DVP in the hard tables of SVP, in the absence of active and standby DVP, will refresh the hard tables of SVP in the case that DVP changes, and a VPWS BYPASS business has 3 VP, N bars VPWS BYPASS business there is 3*N VP, when this 3*N SVP DVP changes, it is necessary to it is hard to refresh 3*N SVP Table.VP FRR mechanism is introduced in the present invention, possesses DVP FRR functions, active and standby DVP and FRR in the hard tables of SVP be present, by FRR ID state values determine primary DVP or standby DVP, N bar VPWS BYPASS business only need N number of FRR, and one time FRR list items refresh 64 FRR state can be updated, because a FRR state only accounts for a bit, only needs to refresh N/64 hard table.From And switching time is greatly reduced, improve and switch efficiency.
(2) the VPWS BYPASS pretection switch methods based on quick heavy-route of the invention, OAM alarm list items are carried out Optimization, maximize the instance number that each entry of OAM alarm list items is included.So as to improve list item utilization rate, reduce Read the number of hardware table item.
Brief description of the drawings
Fig. 1 is the flow chart of the VPWS BYPASS pretection switch methods based on quick heavy-route in the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Shown in Figure 1, the present invention provides a kind of VPWS BYPASS pretection switch methods based on quick heavy-route, should Method comprises the following steps：
S1. the FRR ID of all protection business are marked；
FRR (Fast Reroute, quick heavy-route) is intended to after link in network or node failure, is that these are important Node or link backup protection is provided, realize quick heavy-route, influence when reducing link or node failure to flow, make stream Amount realizes fast quick-recovery.
A protection business corresponds to a FRR ID in the present invention, and each protection traffic differentiation can come after mark.
S2. the OAM alarm statuses of each protection business are read, according to whether warning information be present determines each protection business FRR ID state values；
OAM (Operation Administration and Maintenance), according to the reality of carrier network operation Border is needed, and the management work of network generally is divided into 3 major classes：Operate (Operation), management (Administration), Safeguard (Maintenance), abbreviation OAM.The main prediction for completing commodity network and business progress of operation, plan and match somebody with somebody Put work；Safeguard the regular job activity of the progress such as test and the fault management mainly to network and its business.
OAM alarms in the present invention mainly include CV alarms and CSF alarms, are alerted in the OAM for obtaining each protection business After state, you can determine the FRR ID state values of each protection business.If the specifically, OAM alarm statuses of any protection business Warning information be present, then the FRR ID state values of the protection business are designated as 1, if warning information is not present, by the protection industry The FRR ID state values of business are designated as 0.
S3. the FRR ID state values of each protection business are assembled and write FRR list items；
Associated protection business can be distributed as far as possible in assembling at same group, the different types of protection of different levels Traffic assignments are in different groups.
S4. VP FRR mechanism is introduced in VPWS BYPASS forwarding processes, is determined to use main DVP or standby according to FRR list items DVP is forwarded.
The present invention introduces VP FRR mechanism, VP FRR (virture port fast in VPWS BYPASS forwarding processes Re-route, the empty quick heavy-route in port), there is active and standby DVP in it, can select active and standby DVP according to FRR ID state values (destination virture port, purpose virtual port).VPWS BYPASS forwarding processes search SVP (source first Virture port, source virtual port), VP FRR are enabled, FRR ID are searched using FRR TABLE, according to FRR ID state values Main DVP or standby DVP are selected to be forwarded.Specifically, when FRR TABLE search FRR ID, if FRR ID are 1, standby DVP is selected Forwarded, if FRR ID are 1, forwarded from main DVP.
In addition, in order to improve list item utilization rate, the number for reading hardware table item is reduced, the method in the present invention also includes increasing The step of adding the instance number of OAM alarm list items.The instance number of OAM alarm list items can be increased, make each of OAM alarm list items The instance number that entry is included maximizes.Specifically, for alerting list item for CV, 1bit represents an example, one 64bit entry then represents 64 examples.List item is alerted for CSF, 2bit represents an example, and 64bit entry is then Represent 32 examples.Instance number maximizes CV alarm list items and CSF alarm list items can be found in Tables 1 and 2.
Table 1CV alerts list item
Bit63 Bit62 Bit61 ... ... ... ... Bit2 Bit1 Bit0
CV63 CV62 CV61 ... ... ... ... CV2 CV1 CV0
Table 2CSF alerts list item
Similarly, the instance number that each entry of the FRR list items in step S3 is included can also be maximized, for FRR List item, 1bit represent an example, and 64bit entry then represents 64 examples.It for details, reference can be made to table 3.
Table 3FRR list items
Bits63 Bits62 Bits61 ... ... ... ... Bits2 Bits1 Bits0
FRR63 FRR62 FRR61 ... ... ... ... FRR2 FRR1 FRR0
In summary, traditional mode does not introduce VP FRR mechanism, without DVP FRR functions, only has in the hard tables of SVP 1 DVP, in the absence of active and standby DVP, the hard tables of SVP, a VPWS BYPASS business will be refreshed in the case that DVP changes There are 3 VP, N bar VPWS BYPASS business there is 3*N VP, when this 3*N SVP DVP changes, just need Refresh the hard tables of 3*N SVP.VP FRR mechanism is introduced in the present invention, possesses DVP FRR functions, exists in the hard tables of SVP active and standby DVP and FRR, primary DVP is determined by FRR ID state values or standby DVP, N bar VPWS BYPASS business only need it is N number of FRR, a FRR list item refresh the state that can update 64 FRR, because a FRR state only accounts for a bit, only needed Refresh N/64 hard table.So as to greatly reduce switching time, improve and switch efficiency.
The present invention also provides a kind of VPWS BYPASS pretection switch systems based on quick heavy-route, including：Mark mould Block, read module, judging module, assembling module and execution module.
Wherein, mark module, it is used for the FRR ID for marking all protection business；
Read module, it is used for the OAM alarm statuses for reading each protection business；
Judging module, it is used to judge that OAM alarm statuses whether there is warning information, and determines each protection business FRR ID state values；
Module is assembled, it is used to assemble the FRR ID state values of each protection business and writes FRR list items；And
Execution module, it is included in the VP FRR mechanism introduced in VPWS BYPASS forwarding processes, and the execution module Determine to be forwarded using main DVP or standby DVP according to FRR list items.Specifically, the execution module in the present invention is NP chips.
System in the present invention also includes list item optimization module, and list item optimization module is used for the reality for increasing OAM alarm list items Number of cases.
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 the protection of the present 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 (10)

  1. A kind of 1. VPWS BYPASS pretection switch methods based on quick heavy-route, it is characterised in that this method includes following step Suddenly：
    Mark the FRR ID of all protection business；
    The OAM alarm statuses of each protection business are read, according to whether the FRR that warning information determines each protection business be present ID state values；
    Assemble the FRR ID state values of each protection business and write FRR list items；And
    VP FRR mechanism is introduced in VPWS BYPASS forwarding processes, determines to carry out using main DVP or standby DVP according to FRR list items Forwarding.
  2. 2. the VPWS BYPASS pretection switch methods based on quick heavy-route as claimed in claim 1, it is characterised in that： VP FRR mechanism is introduced in VPWS BYPASS forwarding processes, VPWS BYPASS forwarding processes search SVP, enable VP FRR, profit FRR ID are searched with FRR TABLE, select main DVP or standby DVP to be forwarded according to FRR ID state values.
  3. 3. the VPWS BYPASS pretection switch methods based on quick heavy-route as claimed in claim 2, it is characterised in that：If There is warning information in the OAM alarm statuses of any protection business, then the FRR ID state values of the protection business are designated as into 1, if not Warning information be present, then the FRR ID state values of the protection business are designated as 0.
  4. 4. the VPWS BYPASS pretection switch methods based on quick heavy-route as claimed in claim 3, it is characterised in that：FRR TABLE searches FRR ID, if FRR ID are 1, is forwarded from standby DVP, if FRR ID are 1, is turned from main DVP Hair.
  5. 5. the VPWS BYPASS pretection switch methods based on quick heavy-route as claimed in claim 1, it is characterised in that：Institute State the step of method also includes the instance number of increase OAM alarm list items.
  6. 6. the VPWS BYPASS pretection switch methods based on quick heavy-route as claimed in claim 5, it is characterised in that：Increase Add the instance number of OAM alarm list items, maximize the instance number that each entry of OAM alarm list items is included.
  7. 7. the VPWS BYPASS pretection switch methods based on quick heavy-route as claimed in claim 1, it is characterised in that：Will The instance number that each entry of FRR list items is included maximizes.
  8. A kind of 8. VPWS BYPASS pretection switch systems based on quick heavy-route, it is characterised in that including：
    Mark module, it is used for the FRR ID for marking all protection business；
    Read module, it is used for the OAM alarm statuses for reading each protection business；
    Judging module, it is used to judge that OAM alarm statuses whether there is warning information, and determines the FRR ID of each protection business State value；
    Module is assembled, it is used to assemble the FRR ID state values of each protection business and writes FRR list items；And
    Execution module, it is included in the VP FRR mechanism introduced in VPWS BYPASS forwarding processes, and the execution module according to FRR list items determine to be forwarded using main DVP or standby DVP.
  9. 9. the VPWS BYPASS pretection switch systems based on quick heavy-route as claimed in claim 8, it is characterised in that：Institute Stating system also includes list item optimization module, and the list item optimization module is used for the instance number for increasing OAM alarm list items.
  10. 10. the VPWS BYPASS pretection switch systems based on quick heavy-route as claimed in claim 8, it is characterised in that：Institute It is NP chips to state execution module.
CN201710862645.XA 2017-09-22 2017-09-22 VPWS BYPASS protection switching method and system based on fast rerouting Active CN107592260B (en)

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PCT/CN2018/102472 WO2019056922A1 (en) 2017-09-22 2018-08-27 Fast rerouting-based vpws bypass protection switching method and system

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