CN101867392B - Method, equipment and system for improving type B protection switching performance - Google Patents
Method, equipment and system for improving type B protection switching performance Download PDFInfo
- Publication number
- CN101867392B CN101867392B CN200910131690.3A CN200910131690A CN101867392B CN 101867392 B CN101867392 B CN 101867392B CN 200910131690 A CN200910131690 A CN 200910131690A CN 101867392 B CN101867392 B CN 101867392B
- Authority
- CN
- China
- Prior art keywords
- onu
- olt
- pon mouth
- information
- registration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a method, equipment and a system for improving type B protection switching performance. The method comprises: when an OLT has no fault, backing up the related information of a main PON port into a standby PON port and informing all ONUs of the fact that the OLT is in a type B protection state; when a fault is detected in the OLT, switching the main PON port to the standby PON port and sending a deregistration request to all ONU of the OLT; and after the OLT receiving re-registration requests of the ONUs, giving discovery windows in a whole period to all ONUs in a first authentication period and giving the discovery windows in part of the period to unregistered ONU in a subsequent authentication period till all ONUs finish re-registration. The equipment comprises an information backup unit, a deregistration request sending unit and a discovery window distribution unit. The method of the invention solves the problems of long switching time and unsatisfactory reliability of the prior art.
Description
Technical field
The present invention relates to communication technique field, relate in particular to a kind of method, equipment and system of the Type of raising B protection switching performance.
Background technology
As a kind of broadband access technology, EPON (Ethernet Passive Optical Network, Ethernet passive optical network) has started to enter the stage of large scale deployment, starts to enter various fields.Due to more especially higher to the reliability requirement client of business user, such as bank, electric power, therefore the clients such as large enterprises are higher to the requirement of reliability, just produced the resist technology of Type A, B, tri-kinds of main flows of C.Wherein Type B protection becomes with relatively low cost and high reliability the protected mode that operator favors most again, is illustrated in figure 1 the schematic diagram of Type B protection in prior art.
Typical Type B protection reversed process comprises: OLT (Optical Line Terminal; optical fiber cable termination) fault detected and carry out switch, ONU (Optical Network Unit; optical network unit) re-register and ranging process, OAM (Operation Administration and Maintenance, Operations, Administration and Maintenance) are found and expansion OAM discovery, ONU device authentication, OLT are carried out initial configuration to ONU.In the deployment of TypeB protection, the upper active and standby PON of OLT (Passive Optical Network, passive optical-fiber network) mouth is two different PON mouths, that is to say and have respectively different PON MAC (Media Access Control, medium access control) module and optical module, and in actual deployment, active and standby optical fiber is generally walked is all different paths, therefore can there is bigger difference in the length of these trunk optical fibers, differ at least several meters, phase difference kilometer at most, RTT (Round-Trip Time when yet the difference of device or the difference of fiber path all can cause the active and standby PON mouth of OLT to be found range to ONU, round-trip delay) value has relatively large deviation, once detecting the absolute difference of the new and old RTT value of a certain ONU, OLT surpasses OLT shutter in limited time, generation time is stabbed to drift error, OLT also will trigger because timestamp drift error being detected this ONU and separate registration.Once therefore switch, because OLT detects the equal life period stamp of all ONU drift error, all ONU that trigger under this splitter are separated to registration, these ONU are separated after registration, all can in finding window, attempt registering again.
Yet, on OLT, be not that each authorization cycles is found window, but just have one every several authorization cycles, find window, to facilitate, do not have the ONU of registration to register.Find the authorization cycles of window and the size of window itself, standard the inside all do not have to stipulate, but allows equipment vendor and operator decide, and conventionally finds that the size of window and authorization cycles all can set.In default situation, in order to adapt with actual conditions and to save as far as possible bandwidth, find that the authorization cycles of window generally all arranges longly, just generally to there will be discovery window through a lot of authorization cycles, and find that the size of window is also smaller.As shown in Figure 2, be the schematic diagram of the typical discovery procedure instantiation of OLT in EPON system.Wherein, in the first authorization cycles, give part and find window; In the second authorization cycles, the 3rd authorization cycles, all do not find window; In the period 4, give again part and find window.
So, if in prior art because fault is switched, switch so that rear all ONU must compete that this just occurs every several authorization cycles simultaneously one find that window registers, the probability that at this time conflict occurs is than normally much larger, therefore all ONU under this splitter will all re-register the tediously long time of needs, even reach a second level.Owing to switching, rear ONU re-registers and ranging process is longer, causes all processes below all to need to re-start, and because these all ONU recover service traffics, forwards the time that needs the several seconds.
Never interrupt the demand of any business, in Type B protection, if when PON mouth or trunk optical fiber break down, the time of recovery should be less than 50ms.From upper surface analysis, the protection switch time of Type B is long, even reaches several seconds level, certainly will want so all application of broken clients, and this is unacceptable to client, also greatly reduces the meaning of this kind of protected mode.
Summary of the invention
The invention provides a kind of method, equipment and system of the Type of raising B protection switching performance, in order to solve the Type B protection switch time length existing in prior art, can not meet the problem of client's high reliability request.
A kind of method that improves Type B protection switching performance provided by the invention, is applied in the Ethernet passive optical network EPON system that comprises optical fiber cable termination OLT and optical network unit ONU, comprises the following steps:
A, when OLT does not break down, the relevant information of main passive optical-fiber network PON mouth is backuped to standby PON mouth, and notifies described in all ONU OLT under Type B guard mode;
B, when described OLT detects fault, main PON mouth is switched to standby PON mouth, and sends and separate registration requests to all ONU under described OLT;
C, described OLT receive after the registration request again of described ONU transmission, in the first authorization cycles, give the discovery window in whole cycle of all ONU, and in follow-up authorization cycles, give the discovery window in non-whole cycle of unregistered ONU, until all ONU all complete registration again.
Wherein, above-mentioned relevant information comprises: the configuration information of main PON mouth and state information, OAM finds and expansion OAM Discovery Status information, and the authentication information of ONU, state information and configuration information.
Method provided by the invention further has following characteristics:
The discovery window that gives the non-whole cycle of unregistered ONU in above-mentioned steps C in follow-up authorization cycles registers conflict random back algorithm by ONU and the actual test value of system is definite.
Above-mentioned steps C also comprises:
In other authorization cycles except the first authorization cycles, when described OLT gives the discovery window in non-whole cycle of unregistered ONU, for sending common Gate frame, the ONU that starts to register make it complete follow-up registration process simultaneously.
After above-mentioned steps C, also comprise: described OLT carries out regular traffic flow forwarding.
The present invention also provides a kind of optical fiber cable termination OLT, comprising:
Information back-up unit, for when OLT does not break down, backups to standby PON mouth by the relevant information of main passive optical-fiber network PON mouth, and notifies described in all ONU OLT under Type B guard mode;
Separate registration request transmitting element, for when described OLT detects fault, main PON mouth is switched to standby PON mouth, and all ONU under described OLT send solution registration request;
Find window allocation units, for receiving after the registration request again of described ONU transmission, in the first authorization cycles, give the discovery window in whole cycle of all ONU, and in follow-up authorization cycles, give the discovery window in non-whole cycle of unregistered ONU, until all ONU all complete registration again.
Wherein, the relevant information in above-mentioned hot standby unit specifically comprises:
The configuration information of main PON mouth and state information, OAM finds and expansion OAM Discovery Status information, and the authentication information of ONU, state information and configuration information.
Equipment provided by the invention further has following characteristics:
The discovery window that gives the non-whole cycle of unregistered ONU in described discovery window allocation units in follow-up authorization cycles registers conflict random back algorithm by ONU and the actual test value of system is definite.
Described discovery window allocation units, also for other authorization cycles except the first authorization cycles, make it complete follow-up registration process for the ONU that has started to register sends common Gate frame when giving the non-whole cycle discovery window of unregistered ONU.
Equipment provided by the invention also comprises:
Business Stream forwards recovery unit, for completing at all ONU after registration again, carries out regular traffic flow forwarding.
The present invention also provides a kind of Ethernet passive optical network system EPON, comprises optical fiber cable termination OLT and optical network unit ONU, wherein,
Described OLT, for when OLT does not break down, backups to standby PON mouth by the relevant information of main passive optical-fiber network PON mouth, and notifies described in all ONU OLT under Type B guard mode; When described OLT detects fault, main PON mouth is switched to standby PON mouth, and all ONU under described OLT send solution registration request; When described OLT receives the registration request again of described ONU transmission, in the first authorization cycles, give the discovery window in whole cycle of all ONU, and in follow-up authorization cycles, give the discovery window in non-whole cycle of unregistered ONU, until all ONU all complete registration again;
Described ONU, for when OLT detects fault, receives the solution registration request of described OLT, separates registration, and sends registration request again; After having registered again, all ONU carry out general traffics forwarding.
Wherein, described relevant information comprises:
The configuration information of main PON mouth and state information, OAM finds and expansion OAM Discovery Status information, and the authentication information of ONU, state information and configuration information.
Compared with prior art, the present invention has the following advantages:
Method provided by the invention; relevant information by the main PON mouth of backup before OLT does not break down arrives standby PON mouth; when having fault to occur; make that OLT can complete rapidly switch, ONU can complete rapidly register flow path again; simultaneously; ONU is when again registering; OLT can will find that window moment widens; and discovery window is set in follow-up authorization cycles; greatly saved and switched the required time, solved Type B protection switch time long and can not meet the problem of client's high reliability request.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be introduced simply below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is Type B protection schematic diagram in prior art;
Fig. 2 is OLT discovery procedure instantiation schematic diagram in EPON system in prior art;
Fig. 3 is a kind of flow chart that improves the method for Type B protection switching performance provided by the invention;
Fig. 4 realizes reversed process flow chart in OLT side in the embodiment of the present invention;
Fig. 5 is OLT discovery procedure instantiation schematic diagram in the embodiment of the present invention;
Fig. 6 realizes reversed process flow chart in ONU side in the embodiment of the present invention;
Fig. 7 is the structure chart of a kind of optical fiber cable termination OLT provided by the invention;
Fig. 8 is a kind of Ethernet passive optical network EPON system construction drawing provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides method, the equipment and system of a kind of Type of raising B protection switching performance, in order to solve, in prior art, exist Type B protection switch time long and can not meet the problem of client's high reliability request.
The invention provides a kind of method of the Type of raising B protection switching performance; the method is that typical discovery procedure in prior art is improved; the time that after switching over shortening, ONU re-registers and finds range, the flow chart of concrete the method as shown in Figure 3, comprises the following steps:
Step S301, when OLT does not break down, the relevant information of main PON mouth is backuped to standby PON mouth, and notifies described in all ONU OLT under Type B guard mode.
Wherein, relevant information specifically comprises: the configuration information of main PON mouth and state information, OAM finds and expansion OAM Discovery Status information, and the authentication information of ONU, state information and configuration information.
Step S302, when OLT detects fault, main PON mouth is switched to standby PON mouth, and sends and separate registration requests to all ONU under OLT.
Step S303, OLT receive after the registration request again of ONU transmission, in the first authorization cycles, give the discovery window in whole cycle of all ONU, and in follow-up authorization cycles, give the discovery window in non-whole cycle of unregistered ONU, until all ONU all complete registration again.
Wherein, the discovery window that gives the non-whole cycle of unregistered ONU in this step in follow-up authorization cycles registers conflict random back algorithm by ONU and the actual test value of system is definite.
And in this step, in other authorization cycles except the first authorization cycles, when OLT gives the discovery window in non-whole cycle of unregistered ONU, for sending common Gate frame, the ONU that starts to register make it complete follow-up registration process simultaneously.
After step S303, OLT carries out regular traffic flow forwarding.
By method provided by the invention; relevant information by the main PON mouth of backup before OLT does not break down arrives standby PON mouth; when having fault to occur; make that OLT can complete rapidly switch, ONU can complete rapidly register flow path again; simultaneously; ONU is when again registering; OLT can will find that window moment widens; and discovery window was set in the follow-up cycle; greatly saved and switched the required time, solved Type B protection switch time long and can not meet the problem of client's high reliability request.
Below by a specific embodiment, elaborate the specific implementation process of raising Type B protection switching performance method provided by the invention.
The method of concrete the present embodiment realization raising Type B protection switching performance is switched implementation procedure as shown in Figure 4 OLT side, comprises the following steps:
Step S401, when fault does not occur; namely under normal circumstances; OLT need to find the configuration information of main PON mouth and some state informations, OAM and expansion OAM Discovery Status information, ONU device authentication information, state information and configuration information backup to standby PON mouth during by main PON cause for gossip, also need simultaneously by expansion OAM notify all ONU its under Type B guard mode.
Wherein, the configuration information of main PON mouth and state information comprise LLID (Logical Link Identity, LLID) information that each ONU distributes, dynamic multicast forwarding-table item etc.It should be noted that owing to constantly can only having a PON mouth luminous at any one therefore at this moment only have main PON eloquence energy luminous, the standby PON mouth in stand-by state only can not be luminous to receive light.
Step S402, OLT carry out fault detect, when fault being detected, start immediately and switch flow process, realize from main PON mouth and are switched to standby PON mouth.
Wherein, the to the effect that active and standby PON mouth of fault detect and the situation of active and standby optical fiber, this part detection is mainly the situation of detection hardware device and optical fiber, detection module be take the functional parts such as FPGA or CPLD as main, once there therefore have fault to occur to detect the time used to be just shorter, can be controlled in 20ms.
It should be noted that, when fault initiating being detected, switch after flow process, main PON mouth stops luminous and can only receive light, and standby PON mouth enters normal transmitting-receiving light state immediately.
Step S403, ONU find range again, and because OLT is from main PON mouth is switched to standby PON mouth, all ONU will stab drift error by time of occurrence, make OLT send and separate registration requests to all ONU.
Step S404, after OLT receives the registration request again that all ONU send, start to find flow process, in the first authorization cycles, give the discovery window in whole cycle, in follow-up authorization cycles, give the discovery window in non-whole cycle of unregistered ONU, until all ONU all complete and register.Wherein, OLT is to finding in follow-up authorization cycles that the distribution of window is registered conflict random back algorithm by ONU and actual test value is determined.
Below by a concrete example, above-mentioned window assigning process is described, in this example, OLT takes three authorization cycles can realize registering again of all ONU.Certainly, the above-mentioned a kind of concrete condition that just the invention provides method, except the discovery window that other authorization cycles of the first authorization cycles give can be divided as the case may be, and not only limits to above-mentioned a kind of situation.
In above-mentioned example, OLT finds schematic diagram as shown in Figure 5, and detailed process is:
(1) start first authorization cycles, now the standby PON mouth in OLT can be covered with the whole cycle to allow all ONU have fully again hour of log-on and chance by finding that window enlarges to.Through this first week after date, there is most of ONU to start to have carried out registration alternately with OLT.
(2) start second authorization cycles, send Gate frame so that these ONU carry out follow-up registration process to the ONU that has started to register, due to first authorization cycles of process, most of ONU has started to register alternately with OLT, therefore by ONU, register conflict random back theory and actual test value, again give the discovery window in 1/4th cycles of unregistered ONU to facilitate the ONU registration that does not also have registration to come up.Through these two authorization cycles overwhelming majority ONU, started registration.
(3) start the 3rd authorization cycles, send Gate frame so that the ONU that has started to register carries out follow-up registration process now to the ONU that has started registration, due to process the first two authorization cycles, overwhelming majority ONU has started to register alternately with OLT, therefore by ONU, register conflict random back algorithm and actual test value, continue the discovery window in 1/8th cycles that gave to facilitate the ONU not registered extremely individually to start registration.
After above-mentioned three specific cycles, very large owing to finding in the first authorization cycles that window draws, therefore between ONU, competition is found window and to produce the possibility of conflict just very little, and then just all ONU all can be completed to registration within several continuous cycles, in the follow-up cycle, just can carry out bandwidth authorizing and discovery procedure according to discovery procedure of the prior art.
Certainly, if also have unregistered ONU in a certain instantiation after three authorization cycles, OLT can continue to register conflict random back algorithm and actual test value by ONU and finds window, until all ONU all complete registration again.
Step S405, after all ONU all succeed in registration, OLT no longer carries out that follow-up OAM finds and a series of processes such as expansion OAM discoverys, directly enters into Business Stream forwarding state.
In sum, OAM between active and standby PON mouth is found OLT side and expansion OAM discovery, ONU device authentication, OLT are carried out the information such as initial configuration and backed up to ONU, by this process, with regard to not needing, because of PON link down overlong time, must again shake hands or configure, thereby reversed process is shortened greatly.Meanwhile, the registration relating in the present embodiment and ranging process are all that ASIC (Application SpecificIntegrated Circuit, application-specific integrated circuit (ASIC)) chip completes, and therefore can allow the time do very shortly.
The method of the raising Type B protection switching performance that concrete the present embodiment provides is switched implementation procedure as shown in Figure 6 in ONU side, comprises the following steps:
Step S601, when fault does not occur, ONU learns under its state in Type B protection by expansion OAM.
Step S602, when OLT detects fault, be switched to standby PON mouth, because all ONU will stab drift error by time of occurrence, cause OLT to send and separate registration request, when ONU receives after the solution registration request of OLT, separate registration and send immediately the request that re-registers.
Step S603, treat all ONU re-register after and known its under Type B protection, ONU is switched to the normal forwarding state of Business Stream immediately.This step makes ONU can not need again to carry out OAM discovery and expands the operations such as OAM discovery, device authentication, configuration restore.
The method that the embodiment of the present invention provides, by the configuration information of main PON mouth and state information, OAM are found before not breaking down and the configuration information of expansion OAM Discovery Status, ONU device authentication information and state and ONU etc., carry out Hot Spare, make when fault occurs, after ONU re-registers, ONU can be switched to the normal forwarding state of Business Stream immediately, do not need again to carry out the operations such as OAM discovery and expansion OAM discovery, device authentication, configuration restore, greatly improved and switched efficiency; Simultaneously, when ONU registers again, standby PON mouth enlarges to discovery window to be covered with whole authorization cycles, hour of log-on and the chance of ONU have been increased, and through a plurality of authorization cycles, all find window continuously, make all ONU be accomplished registration process again, further shorten hour of log-on.So the implementation method of the switching performance providing by the present embodiment, has solved Type B protection switch time long and can not meet the problem of client's high reliability request.
The present invention also provides a kind of optical fiber cable termination OLT, as shown in Figure 7, specifically comprises:
Information back-up unit 710, for when OLT does not break down, backups to standby PON mouth by the relevant information of main passive optical-fiber network PON mouth, and notifies described in all ONU OLT under Type B guard mode;
Separate registration request transmitting element 720, for when OLT detects fault, main PON mouth is switched to standby PON mouth, and all ONU under OLT send solution registration request;
Find window allocation units 730, for receiving after the registration request again of ONU transmission, in the first authorization cycles, give the discovery window in whole cycle of all ONU, and in follow-up authorization cycles, give the discovery window in non-whole cycle of unregistered ONU, until all ONU all complete registration again.
Wherein, the relevant information in information back-up unit 710, the relevant information of main passive optical-fiber network PON mouth being backuped in standby PON mouth is specially: the configuration information of main PON mouth and state information, OAM finds and expansion OAM Discovery Status information, and the authentication information of ONU, state information and configuration information.
The discovery window that gives respectively the non-whole cycle of unregistered ONU in above-mentioned discovery window allocation units 730 in follow-up authorization cycles registers conflict random back algorithm by ONU and the actual test value of system is definite.
And above-mentioned discovery window allocation units 730, also for other authorization cycles except the first authorization cycles, make it complete follow-up registration process for the ONU that has started to register sends common Gate frame when giving the non-whole cycle discovery window of unregistered ONU.
Concrete, equipment provided by the invention also further comprises: Business Stream forwards recovery unit 740, for completing at all ONU after registration again, carries out regular traffic flow forwarding.
By equipment provided by the invention; relevant information by the main PON mouth of backup before OLT does not break down arrives standby PON mouth; when having fault to occur; make that OLT can complete rapidly switch, ONU can complete rapidly register flow path again; simultaneously; ONU is when again registering; OLT can will find that window moment widens; and discovery window was set in the follow-up cycle; greatly saved and switched the required time, solved Type B protection switch time long and can not meet the problem of client's high reliability request.
The present invention also provides a kind of Ethernet passive optical network system EPON, as shown in Figure 8, comprises optical fiber cable termination OLT 810 and optical network unit ONU 820, wherein,
OLT 810, for when OLT does not break down, the relevant information of main passive optical-fiber network PON mouth backuped to standby PON mouth, and notify described in all ONU OLT under Type B guard mode; When described OLT detects fault, main PON mouth is switched to standby PON mouth, and all ONU under described OLT send solution registration request; When OLT receives the registration request again of ONU transmission, in the first authorization cycles, give the discovery window in whole cycle of all ONU, and in follow-up authorization cycles, give the discovery window in non-whole cycle of unregistered ONU, until all ONU all complete registration again;
ONU 820, for when OLT detects fault, receive the solution registration request of OLT, separate registration, and send registration request again; After having registered again, all ONU carry out general traffics forwarding.
Wherein, above-mentioned relevant information is specially: the configuration information of main PON mouth and state information, OAM finds and expansion OAM Discovery Status information, and the authentication information of ONU, state information and configuration information.
By system provided by the invention; relevant information by the main PON mouth of backup before OLT does not break down arrives standby PON mouth; when having fault to occur; make that OLT can complete rapidly switch, ONU can complete rapidly register flow path again; simultaneously; ONU is when again registering; OLT can will find that window moment widens; and discovery window was set in the follow-up cycle; greatly saved and switched the required time, solved Type B protection switch time long and can not meet the problem of client's high reliability request.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (12)
1. a method that improves Type B protection switching performance, is applied in the Ethernet passive optical network EPON system that comprises optical fiber cable termination OLT and optical network unit ONU, it is characterized in that, comprises the following steps:
A, when OLT does not break down, the relevant information of main passive optical-fiber network PON mouth is backuped to standby PON mouth, and notifies described in all ONU OLT under Type B guard mode;
B, when described OLT detects fault, main PON mouth is switched to standby PON mouth, and sends and separate registration requests to all ONU under described OLT;
C, described OLT receive after the registration request again of described ONU transmission, in the first authorization cycles, give the discovery window in whole cycle of all ONU, and in follow-up authorization cycles, give the discovery window in non-whole cycle of unregistered ONU, until all ONU all complete registration again.
2. the method for claim 1, is characterized in that, described relevant information comprises:
The configuration information of main PON mouth and state information, OAM finds and expansion OAM Discovery Status information, and the authentication information of ONU, state information and configuration information.
3. method as claimed in claim 1 or 2, is characterized in that, the discovery window that gives the non-whole cycle of unregistered ONU in described step C in follow-up authorization cycles registers conflict random back algorithm by ONU and the actual test value of system is definite.
4. method as claimed in claim 3, is characterized in that, described step C also comprises:
In other authorization cycles except the first authorization cycles, when described OLT gives the discovery window in non-whole cycle of unregistered ONU, for sending common Gate frame, the ONU that starts to register make it complete follow-up registration process simultaneously.
5. method as claimed in claim 4, is characterized in that, after described step C, also comprises:
Described OLT carries out regular traffic flow forwarding.
6. an optical fiber cable termination OLT, is characterized in that, comprising:
Information back-up unit, for when OLT does not break down, backups to standby PON mouth by the relevant information of main passive optical-fiber network PON mouth, and notifies described in all ONU OLT under Type B guard mode;
Separate registration request transmitting element, for when described OLT detects fault, main PON mouth is switched to standby PON mouth, and all ONU under described OLT send solution registration request;
Find window allocation units, for receiving after the registration request again of described ONU transmission, in the first authorization cycles, give the discovery window in whole cycle of all ONU, and in follow-up authorization cycles, give the discovery window in non-whole cycle of unregistered ONU, until all ONU all complete registration again.
7. optical fiber cable termination OLT as claimed in claim 6, is characterized in that, the relevant information in described information back-up unit specifically comprises:
The configuration information of main PON mouth and state information, OAM finds and expansion OAM Discovery Status information, and the authentication information of ONU, state information and configuration information.
8. the optical fiber cable termination OLT as described in claim 6 or 7, it is characterized in that, the discovery window that gives the non-whole cycle of unregistered ONU in described discovery window allocation units in follow-up authorization cycles registers conflict random back algorithm by ONU and the actual test value of system is definite.
9. optical fiber cable termination OLT as claimed in claim 8, it is characterized in that, described discovery window allocation units, also for other authorization cycles except the first authorization cycles, make it complete follow-up registration process for the ONU that has started to register sends common Gate frame when giving the non-whole cycle discovery window of unregistered ONU.
10. optical fiber cable termination OLT as claimed in claim 9, is characterized in that, described optical fiber cable termination OLT also comprises:
Business Stream forwards recovery unit, for completing at all ONU after registration again, carries out regular traffic flow forwarding.
11. 1 kinds of Ethernet passive optical network EPON systems, comprise optical fiber cable termination OLT and optical network unit ONU, it is characterized in that,
Described OLT, for when OLT does not break down, backups to standby PON mouth by the relevant information of main passive optical-fiber network PON mouth, and notifies described in all ONU OLT under Type B guard mode; When described OLT detects fault, main PON mouth is switched to standby PON mouth, and all ONU under described OLT send solution registration request; When described OLT receives the registration request again of described ONU transmission, in the first authorization cycles, give the discovery window in whole cycle of all ONU, and in follow-up authorization cycles, give the discovery window in non-whole cycle of unregistered ONU, until all ONU all complete registration again;
Described ONU, for when OLT detects fault, receives the solution registration request of described OLT, separates registration, and sends registration request again; After having registered again, all ONU carry out general traffics forwarding.
12. systems as claimed in claim 11, is characterized in that, described relevant information comprises:
The configuration information of main PON mouth and state information, OAM finds and expansion OAM Discovery Status information, and the authentication information of ONU, state information and configuration information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910131690.3A CN101867392B (en) | 2009-04-15 | 2009-04-15 | Method, equipment and system for improving type B protection switching performance |
| PCT/CN2009/075919 WO2010118619A1 (en) | 2009-04-15 | 2009-12-24 | Method, device and system for improving the performance of type b protection switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910131690.3A CN101867392B (en) | 2009-04-15 | 2009-04-15 | Method, equipment and system for improving type B protection switching performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101867392A CN101867392A (en) | 2010-10-20 |
| CN101867392B true CN101867392B (en) | 2014-11-05 |
Family
ID=42958973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910131690.3A Active CN101867392B (en) | 2009-04-15 | 2009-04-15 | Method, equipment and system for improving type B protection switching performance |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101867392B (en) |
| WO (1) | WO2010118619A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986719A (en) * | 2010-11-19 | 2011-03-16 | 杭州开鼎科技有限公司 | Method for expanding registered frame in EPON system |
| CN102487466B (en) * | 2010-12-03 | 2015-08-12 | 中兴通讯股份有限公司 | The method and system of the transmission data under a kind of full guard pattern in EPON |
| CN102098593A (en) * | 2011-02-23 | 2011-06-15 | 华为技术有限公司 | Method for performing uplink registration in Ethernet passive optical network (EPON) system and remote equipment |
| CN102209037B (en) * | 2011-06-15 | 2014-03-26 | 华为技术有限公司 | Media access control address switching method, network equipment and user equipment |
| CN102255658B (en) * | 2011-07-05 | 2016-09-28 | 中兴通讯股份有限公司 | The method and device that a kind of 100GE ethernet signal transmits in optical transfer network |
| CN102281158A (en) * | 2011-08-23 | 2011-12-14 | 大唐移动通信设备有限公司 | Line fault processing method and device |
| CN102801467A (en) * | 2012-08-20 | 2012-11-28 | 深圳市共进电子股份有限公司 | Device and method for implementing dual optical fiber protection switching based on ONU |
| CN104253707B (en) * | 2013-06-28 | 2019-06-07 | 上海斐讯数据通信技术有限公司 | A kind of master and backup discs multicast service synchronous method |
| CN104469557B (en) * | 2013-09-18 | 2019-02-01 | 上海诺基亚贝尔股份有限公司 | A method of improving the upstream bandwidth of passive optical network |
| CN106878836B (en) * | 2015-12-14 | 2019-07-26 | 中兴通讯股份有限公司 | Bandwidth scheduling method, ONU register method, device and OLT |
| CN106603186A (en) * | 2016-12-19 | 2017-04-26 | 上海市共进通信技术有限公司 | ONU time synchronization processing system and method based on the GPON system in the class B PON protection |
| CN106850268B (en) * | 2016-12-29 | 2019-12-13 | 瑞斯康达科技发展股份有限公司 | device and method for realizing linear protection switching |
| CN111316575B (en) * | 2017-12-05 | 2021-06-22 | 华为技术有限公司 | Data sending and receiving method in PON system, network equipment and system |
| CN113922869B (en) * | 2021-10-11 | 2023-05-12 | 芯河半导体科技(无锡)有限公司 | EPON network protection switching quick ranging system |
| CN114786075B (en) * | 2022-06-20 | 2022-09-30 | 广州培生智能科技有限公司 | Reliable network structure and redundancy processing method |
| CN117834391A (en) * | 2022-09-29 | 2024-04-05 | 中兴通讯股份有限公司 | Service processing method and device, OLT equipment and storage medium |
| CN117156326B (en) * | 2023-10-26 | 2024-01-12 | 武汉长光科技有限公司 | Protection switching method and device and OLT equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004201099A (en) * | 2002-12-19 | 2004-07-15 | Mitsubishi Electric Corp | Key station, slave station, communication control method, and communication control program |
| CN1866804A (en) * | 2005-10-19 | 2006-11-22 | 华为技术有限公司 | Method for carrying out fault protection inversion on main stem optical fibre of passive optical network |
| CN101150367A (en) * | 2007-11-08 | 2008-03-26 | 杭州华三通信技术有限公司 | A backup method and device for passive optical network OLT device |
| JP2008072370A (en) * | 2006-09-13 | 2008-03-27 | Kddi Corp | Optical termination system, optical termination unit and switching method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7545813B2 (en) * | 2003-08-26 | 2009-06-09 | Teknovus, Inc. | Method and apparatus for registering multiple remote nodes in an ethernet passive optical network |
| JP4458430B2 (en) * | 2006-08-31 | 2010-04-28 | 日本電信電話株式会社 | Delay time generation method and optical line terminator |
-
2009
- 2009-04-15 CN CN200910131690.3A patent/CN101867392B/en active Active
- 2009-12-24 WO PCT/CN2009/075919 patent/WO2010118619A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004201099A (en) * | 2002-12-19 | 2004-07-15 | Mitsubishi Electric Corp | Key station, slave station, communication control method, and communication control program |
| CN1866804A (en) * | 2005-10-19 | 2006-11-22 | 华为技术有限公司 | Method for carrying out fault protection inversion on main stem optical fibre of passive optical network |
| JP2008072370A (en) * | 2006-09-13 | 2008-03-27 | Kddi Corp | Optical termination system, optical termination unit and switching method |
| CN101150367A (en) * | 2007-11-08 | 2008-03-26 | 杭州华三通信技术有限公司 | A backup method and device for passive optical network OLT device |
Non-Patent Citations (1)
| Title |
|---|
| 戚世杰，李迎春，林如俭.EPON系统注册过程.《上海大学学报（自然科学版）》.2005,第11卷(第4期), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101867392A (en) | 2010-10-20 |
| WO2010118619A1 (en) | 2010-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101867392B (en) | Method, equipment and system for improving type B protection switching performance | |
| US8582966B2 (en) | Method and apparatus for protection switching in passive optical network | |
| US9179204B2 (en) | Optical network system | |
| JP5570026B2 (en) | Redundant system that gives EPON redundancy | |
| CN101150367B (en) | A backup method and device for passive optical network OLT device | |
| US9276670B2 (en) | Self-diagnostic method for PON protection system, and PON protection system | |
| JP5154686B2 (en) | Immediate protection method for passive optical network (PON) | |
| US8917990B2 (en) | Fast protection scheme for passive optical network | |
| CN101895791B (en) | Protection switching method and device in Ethernet passive optical network | |
| EP2451119A1 (en) | Joint switching method for aggregation node, aggregation node and system thereof | |
| US20160344472A1 (en) | Method and Device for Channel Switching, Optical Network Unit, and Time Wavelength Division Multiplexing System | |
| CN103763148B (en) | ONU automatic authorization configuration recovery method | |
| CN101822070A (en) | Communications network | |
| KR101961053B1 (en) | Method, device and system for detecting rogue optical network unit | |
| CN101150361A (en) | A method and system for realizing fully protective switching in passive optical network | |
| US20160295307A1 (en) | Master-station apparatus, slave-station apparatus, control device, optical communication system, and connection management method | |
| CN1901419A (en) | EPON system for supporting bone fiber optic protection and bone fiber optic protecting method | |
| EP2528271A1 (en) | Method, passive optical network system and optical line terminal for enabling distributed protection | |
| CN102104418A (en) | Transmission control system, subscriber-side communication device, and office-side communication device | |
| CN101667862A (en) | Optical network system, optical network equipment and exchanging method thereof | |
| WO2010133065A1 (en) | Protection system and method based on the passive optical network | |
| CN103139669A (en) | Method and system for sending data | |
| JP5640877B2 (en) | Communication system, master station device, and communication line switching method | |
| WO2013185595A1 (en) | Method and device for matching feature code of home gateway attached to optical network unit | |
| US20220224595A1 (en) | Optical communication device and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |