CN102647231B - Method and system for restoring service after line switching - Google Patents
Method and system for restoring service after line switching Download PDFInfo
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- CN102647231B CN102647231B CN201210082669.0A CN201210082669A CN102647231B CN 102647231 B CN102647231 B CN 102647231B CN 201210082669 A CN201210082669 A CN 201210082669A CN 102647231 B CN102647231 B CN 102647231B
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Abstract
The invention discloses a method and a system for restoring service after line switching. The method comprises the following steps: after determining that a line is subjected to line switching, a PON (Passive Optical Network) chip control module constructs a notification message and sends the notification message to a service relevance module; when determining that the relevance service of the line switching is started, the service relevance module triggers an OLT (Optical Line Terminal) exchange chip control module to send a query message to a relevance service user through all exchange ports related to the relevancy service by virtue of the PON chip control module; and the OLT exchange chip control module receives a response message returned by the user receiving the query message, and switches the relevancy service to the exchange port in which the response message is located. By utilizing the method and the system, the service can be restored in time, the time consumption for service restoration is controlled at a millisecond level, and the reliable communication of important service is ensured.
Description
Technical field
The present invention relates to EPON (Passive Optical Network is called for short PON) technical field, particularly relate to the method and system of business recovery after line switching in EPON.
Background technology
Access layer network is the basic platform that miscellaneous service is carried out, and the fast development of wideband switch-in business in recent years makes Access Layer present the situation of sustainable growth for the demand of data bandwidth.Optical fiber is large as transmission of high-rate, capacity, support multiple services best medium, makes intelligent acess become a developing direction of Access Network.Passive optical network PON technology is because of the feature of its " passive ", i.e. optical distribution network (Optical DistributionNetwork, ODN) be all made up of the Passive Optical Components such as passive optical splitter and optical fiber, do not comprise any active device, and the advantage of " point-to-multipoint " networking form, passive optical network is had and safeguards the advantage simple, reliability is high, cost is low, become the preferred option realizing FTTx (Fiber To The x) system that industry is generally acknowledged.
PON system is made up of optical line terminal (Optical Line Terminal, OLT), optical network unit (OpticalNetwork Unit is called for short ONU) and optical distribution network ODN.The general centering machine room of OLT, ONU then presses close to end user, and ODN is for connecting OLT and ONU, and the extension of optical fiber distance comprised is usually long and cloth is placed on outdoor.
Circuit for carrying important service adopts the mode of redundancy to protect.As Fig. 1; this figure is C class pretection switch; OLT comprises OLT switching system (the OLT exchange chip control module namely in Fig. 1) and PON subsystem (the PON chip control module namely in Fig. 1); OLT exchange chip control module is connected by the PON that different switching ports is different from PON chip control module; OLT exchange chip control module is used for the control of finishing service transfer of data, and PON chip control module is communicated with ODN by PON mouth.After PON mouth (master) the place line failure of PON chip control module, data service is switched to PON mouth (standby) place circuit by PON chip control module automatically.Also have category-A, category-B, D class and across OLT pretection switch in currently available technology, just do not enumerate, all there is following defect:
Passive optical network line is switched in the process of PON chip control module, and OLT exchange chip control module the PON chip control module below perception can not there occurs and switch; After passive optical network line is switched, business (as user port in the multicast list that the multicast service is set up) switching port that OLT exchange chip control module realizes can not upgrade in time as switching switching port corresponding to rear working line, causes business not transfer in new line fast.OLT exchange chip control module interval polling cycle sends query message by all switching ports relevant to associated services, and after multicast user therefore can only be waited to receive next query message, the switching port at the response message place returned upgrades multicast list.
For multicast service, OLT exchange chip control module interval polling cycle sends IGMP (Internet Group Management Protocol by all switching ports relevant to associated services, Internet igmpinternet) query message, therefore multicast user can only be waited to receive next IGMP (Internet GroupManagement Protocol, Internet igmpinternet) after query message, according to returned IGMP (Internet Group Management Protocol, Internet igmpinternet) report that the switching port at place upgrades multicast list.
Visible business was just recovered through a polling cycle, and that polling cycle is generally arranged is long, chronic (the multicast inquiry cycle generally arranges tens seconds) of therefore business recovery.
Certainly being also not limited to multicast protocol exists the problems referred to above, and other agreements such as DHCP (Dynamic HostConfiguration Protocol is called for short DynamicHost and arranges agreement) etc. also has analogue.This quasi-protocol feature is after circuit is switched, the user hung under ONU and the connection of ONU are not interrupted, cause user initiatively can not send the protocol massages relevant to this business and notify OLT, OLT exchange chip control module also just can not obtain correct user profile from the new line after switching again, thus business is affected.
In order to realize business recovery fast after generation line switching, a solution that prior art provides is if there occurs line switching between ODN and ONU, triggers ONU and the notice message of the data-link layer address mark or active MAC Address that are packaged with oneself is sent to OLT.But the program has following defect:
1) problem of category-B protection can not be solved, as shown in Figure 2, ONU only has a PON mouth, namely connect ODN by a link, what this topology was laid special stress on protecting is active/standby two links that OLT and ODN is connected, after primary link breaks down, be switched to standby link, this process occurs in the PON chip control module of OLT, without the need to notifying ONU, now ONU does not know to there occurs line switching between OLT and ODN, just can not trigger ONU transmission notice message yet and tell OLT;
2) the fastext switching problem of some agreement can not be solved, such as multicast protocol, because multicast protocol is according to the switching port transmitting data flow in multicast list, after the data-link layer address mark of encapsulation oneself or the notice message of active MAC Address are told OLT by ONU, because multicast list does not pay close attention to the data-link layer address mark of user, concerning multicast protocol, effect is not had, so the demand that multicast service switches fast cannot be met at all after OLT receives this message.
For multicast protocol, a solution is had to be after multicast user's perception there occurs line switching, transmission IGMP initiatively reports, and for the structure shown in Fig. 2, because line switching just occurs between OLT and ODN or ODN and ONU, the multicast user hung under ONU does not have perception and there occurs line switching, so multicast user can not report by transmission IGMP initiatively, and the renewal of multicast list is realized by this IGMP report, therefore cannot upgrade multicast list when circuit is switched, finally can not obtain the correct switching port of multicast user.
Summary of the invention
The invention provides service restoration method and system after a kind of line switching, business recovery can not be realized fast in order to solve prior art after generation line switching.
The invention provides service restoration method after a kind of line switching, comprising:
After passive optical network PON chip control module determination circuit generation line switching, structure notice message is also sent to business association module;
When the associated services that business association module determines to switch front circuit is opened, activating light road terminal OLT exchange chip control module, by all switching ports relevant to associated services, sends query message through PON chip control module to the user of associated services;
The response message that the user that OLT exchange chip control module receives query message returns, is switched to the switching port at described response message place by described associated services.
The present invention also provides business recovery system after a kind of line switching, comprising:
Passive optical network PON chip control module, after determining circuit generation line switching, structure notice message is also sent to business association module;
Business association module, when associated services for determining to switch front circuit is opened, activating light road terminal OLT exchange chip control module, by all switching ports relevant to associated services, sends query message through PON chip control module to the user of associated services;
OLT exchange chip control module, for receiving the response message that the user that receives query message returns, is switched to the switching port at described response message place by described associated services.
Utilize beneficial effect provided by the invention as follows: in the present invention, after execution line protection reverse, will notify that message notifying is to business association module in time, trigger associated services and send message, user responds after receiving the message of this business transmission, thus the correct switching port that the business upgrading user is corresponding; Data are issued by switching rear circuit, thus business is recovered in time, the consuming time of business recovery is controlled at Millisecond, ensure the reliable communication of important service.
Accompanying drawing explanation
Fig. 1 is C class route protection networking schematic diagram;
Fig. 2 is category-B route protection networking schematic diagram;
Fig. 3 is service restoration method flow chart after line switching of the present invention;
Fig. 4 is service restoration method flow chart after line switching in the embodiment of the present invention 1;
Fig. 5 is service restoration method flow chart after line switching in the embodiment of the present invention 2;
Fig. 6 is service restoration method flow chart after line switching in the embodiment of the present invention 3;
Fig. 7 is across OLT route protection networking schematic diagram;
Fig. 8, Fig. 9, Figure 10 are business recovery system construction drawing after embodiment of the present invention line switching.
Embodiment
Below in conjunction with drawings and Examples, service restoration method and system after line switching provided by the invention are illustrated in greater detail.
The embodiment of the present invention provides service restoration method after a kind of line switching, as shown in Figure 3, comprising:
Step 301, after passive optical network PON chip control module determination circuit generation line switching, structure notice message is also sent to business association module;
PON chip control module comprises main PON mouth and standby PON mouth, when the line failure at main PON mouth place, is switched to standby PON mouth place circuit.Certainly, PON chip control module is not limited to only comprise one group of main PON mouth and standby PON mouth, can comprise the main PON mouth of many groups and standby PON mouth.
Because PON chip control module can judge out of order circuit, therefore, after PON chip control module determination circuit generation line switching, structure notice message is also sent to business association module.The announcement trunk that act as of this notice message breaks down, and specifically which circuit there occurs fault.
Preferably, this notice message comprises the message identification of line switching flag bit and work at present circuit, and line switching flag bit is for identifying line failure, and the message identification of work at present circuit is used for identifying specifically which circuit there occurs fault.
Step 302, when business association module determines the associated services unlatching of switching front circuit, activating light road terminal OLT exchange chip control module, by all switching ports relevant to associated services, sends query message through PON chip control module to the user of associated services;
Switch the associated services of front circuit, refer to the business of switching front circuit and transmitting.Business association module obtains the associated services mode of switching front circuit, and the present embodiment does not do concrete restriction, specifically can according to the equipment at business association module place in different ways.
OLT exchange chip control module is connected from different PON mouths is corresponding by different switching ports, before breaking down, sends business datum by the switching port be connected with main PON mouth.After line fault occurs business association module notice, send query message by all switching ports relevant to associated services, then query message can be sent by the switching port be connected with standby PON.
Step 303, the response message that the user that OLT exchange chip control module receives query message returns, is switched to the switching port at described response message place by described associated services.
After execution line protection reverse, will notify that message notifying is to business association module in time in the present invention, trigger associated services and send message, user responds after receiving the message of this business transmission, thus the correct switching port that the business upgrading user is corresponding; Data are issued by switching rear circuit, thus business is recovered in time, the consuming time of business recovery is controlled at Millisecond, ensure the reliable communication of important service.
According to the preferred embodiment for the present invention one, also comprise:
Notice message is sent to OLT exchange chip control module by PON chip control module, and described OLT exchange chip control module is determined to switch switching port corresponding to front circuit according to notice message; Wherein, described business association module is especially by determining that whether switch switching port corresponding to front circuit opens associated services, determines whether the associated services of switching front circuit opens.
Preferably, adopt mode for the moment, business association module can be, but not limited to integrated with OLT exchange chip control module together with.
Switching port corresponding to current each working line is preserved in the database of OLT exchange chip control module, then OLT exchange chip control module is especially by searching the switching port that in its data, current each working line is corresponding, determine whether this switching port opens associated services, if associated services is opened, then trigger OLT exchange chip control module and send query message to this service-user, otherwise do not trigger to this service-user transmission query message.
When opening associated services according to the preferred embodiment for the present invention two, OLT exchange chip control module, PON chip control module is also opened associated services and is coordinated; Wherein, business association module, especially by determining whether the PON mouth switching rear PON chip control module opens associated services, determines whether the associated services of switching front circuit opens.
Wherein, PON chip control module is also opened associated services and is coordinated, specifically refer to that PON chip control module is opened the main associated services by circuit simultaneously and coordinated, like this, business association module can judge whether the PON mouth of the PON chip control module after switching opens associated services, determines whether the associated services of switching front circuit opens.If associated services is opened, then trigger OLT exchange chip control module and send query message to this service-user, otherwise do not trigger to this service-user transmission query message.
Preferably, when adopting mode two, business association module can be, but not limited to integrate with PON chip control module.
When opening associated services according to the preferred embodiment for the present invention three, OLT exchange chip control module, the network equipment be connected with OLT exchange chip control module is also opened associated services and is coordinated; Wherein, described business association module, especially by determining whether the described network equipment opens associated services, determines whether the associated services of switching front circuit opens.If associated services is opened, then trigger OLT exchange chip control module and send query message to this service-user, otherwise do not trigger to this service-user transmission query message.
After performing line protection reverse, the mode of other equipment in message notifying to OLT exchange chip control plane or network will be notified in time in the present invention, business association module triggers related service and sends message, user responds after receiving the message of this business transmission, thus upgrades the correct switching port of customer service; Data are issued by switching rear circuit, thus business is recovered in time, the consuming time of business recovery is controlled at Millisecond, ensure the reliable communication of important service.
Preferably, during employing mode three, described business association module can be, but not limited to integrate with the network equipment.
Provide the preferred embodiment of service restoration method after line switching of the present invention below.
Embodiment 1
In the present embodiment, together with business association module is integrated with OLT exchange chip control module.
As shown in Figure 4, in the present embodiment, after line switching, service restoration method mainly comprises the following steps:
Step 401, PON chip control module judges that circuit is switched rear structure notice message and sends to OLT exchange chip control module and business association module;
Step 402, OLT exchange chip control module receives and searches according to notice message the switching port that in its data storehouse, work at present circuit is corresponding;
Step 403, whether the switching port that business association module determining step 402 finds opens associated services, if associated services is opened, performs step 404, otherwise does not trigger this business transmission query message;
Step 404, triggers OLT exchange chip control module by all switching ports relevant to associated services, sends query message through PON chip control module to the user of associated services;
Preferably, when the present embodiment associated services is multicast service, if multicast service is opened, trigger OLT exchange chip control module and utilize multicast protocol to send igmp querying message.
Step 405, user responds after receiving the query message of associated services, sends response message;
If associated services is multicast service, then, after user receives igmp querying message, respond, send IGMP REPORT;
Step 406, OLT switching control module receives user's response message again from the working line after switching, and again obtains the correct switching port of associated services user, and then upgrades the list item of associated services, the object that the business that reaches switches fast.
If associated services is multicast service, then OLT switching control module receives IGMP REPORT again from the working line after switching, upgrade the switching port of the user in multicast list, thus multicast service is switched fast, from the new line forwarding data after switching, switch from multicast service the time that time delay reduces a multicast inquiry cycle nearly.
Embodiment 2
In the present embodiment, when OLT exchange chip control module opens associated services, PON chip control module is also opened associated services and is coordinated, then described business association module and PON chip control module integrate.
As shown in Figure 5, in the present embodiment, after line switching, service restoration method comprises the following steps:
Step 501, PON chip control module judges that circuit is switched rear structure notice message and sends to business association module;
Step 502, the business association module of PON chip controls aspect judges whether switch rear working line place PON mouth opens associated services; If associated services is opened, perform step 503, otherwise do not trigger this business transmission query message;
If associated services is multicast service, then business association module judges whether switch rear working line place PON mouth opens igmp proxy.
Step 503, PON mouth opens associated services, then business association module triggers OLT exchange chip control module by all switching ports relevant to associated services, sends query message through PON chip control module to the user of associated services.
If associated services is multicast service, and igmp proxy is opened, then business association module triggers OLT exchange chip control module and sends igmp querying message, otherwise igmp proxy does not respond.
Step 504, user responds after receiving the query message of associated services, sends response message;
If associated services is multicast service, then, after user receives igmp querying message, respond, send IGMP REPORT.
Step 505, OLT switching control module receives user's response message again from the working line after switching, and again obtains the correct switching port of associated services user, and then upgrades the list item of associated services, the object that the business that reaches switches fast.
If associated services is multicast service, then OLT switching control module receives IGMP REPORT again from the working line after switching, upgrade the switching port of the user in multicast list, thus multicast service is switched fast, from the new line forwarding data after switching, switch from multicast service the time that time delay reduces a multicast inquiry cycle nearly.
Embodiment 3
When in the present embodiment, OLT exchange chip control module opens associated services, the network equipment be connected with OLT exchange chip control module is also opened associated services and is coordinated, then business association module and the network equipment integrate.
As shown in Figure 6, after the present embodiment line switching, service restoration method comprises the following steps:
Step 601, PON chip control module judges that circuit is switched rear structure notice message and sends to business association module;
Step 602, business association module receives and judges have PON chip controls aspect to there occurs line switching in network according to notice message;
Step 603, business association module judges whether this network equipment opens associated services, if associated services is opened, then performs step 604, otherwise does not trigger this business transmission query message;
If associated services is multicast service, then business association module judges whether switch rear working line place PON mouth opens igmp proxy.
Step 604, triggers OLT exchange chip control module by all switching ports relevant to associated services, sends query message through PON chip control module to the user of associated services.
If associated services is multicast service, and igmp proxy is opened, then business association module triggers OLT exchange chip control module and sends igmp querying message, otherwise igmp proxy does not respond.
Step 605, user responds after receiving the query message of associated services, sends response message;
If associated services is multicast service, then, after user receives igmp querying message, respond, send IGMP REPORT.
Step 606, OLT switching control module receives user's response message again from the working line after switching, and again obtains the correct switching port of associated services user, and then upgrades the list item of associated services, the object that the business that reaches switches fast.
If associated services is multicast service, then OLT switching control module receives IGMP REPORT again from the working line after switching, upgrade the switching port of the user in multicast list, thus multicast service is switched fast, from the new line forwarding data after switching, switch from multicast service the time that time delay reduces a multicast inquiry cycle nearly.
The embodiment of the present invention sends to business association module by the PON chip control module trigger notice message of OLT, solves in the category-B line switching environment of single PON mouth ONU, and ONU cannot can not send the problem notifying message by perception line switching.
Business association module triggering OLT exchange chip control module (associated business is not limited to multicast) that the embodiment of the present invention receives notice message sends association message, user receives this association message and responds, and then reach the associated business list item of renewal fast, the time delay that after reducing PON circuit switching, some important service switch; (note: for multicast, user just responds after must receiving query message, query message unnecessary in network exists, the general inquiry cycle arranges tens seconds even a few minutes, so user could respond IGMP Report renewal multicast list after will waiting until this polling cycle after circuit switching, cause multicast packet business recovery slower; The present embodiment after PON line switching, triggers multicast service immediately send query message, and such user just can respond rapidly, and then fast renewal multicast list reaches the effect that multicast service switches fast).
The method of business recovery after the line switching that the embodiment of the present invention provides; be applicable to the C class shown in Fig. 1 switch; category-B shown in Fig. 2 is switched, as shown in Figure 7 across OLT class PON pretection switch, namely the embodiment of the present invention be suitable for industry conventional A, B, C, D, across all kinds of PON pretection switch such as OLT.
Based on same inventive concept, business recovery system after a kind of line switching is additionally provided in the embodiment of the present invention, the principle of dealing with problems due to this system is similar to service restoration method after a kind of line switching, and therefore the enforcement of these equipment see the enforcement of method, can repeat part and repeat no more.
Business recovery system after the line switching that the embodiment of the present invention provides, comprising:
Passive optical network PON chip control module, after determining circuit generation line switching, structure notice message is also sent to business association module;
Business association module, when associated services for determining to switch front circuit is opened, activating light road terminal OLT exchange chip control module, by all switching ports relevant to associated services, sends query message through PON chip control module to the user of associated services;
OLT exchange chip control module, for receiving the response message that the user that receives query message returns, is switched to the switching port at described response message place by described associated services.
Preferably, described PON chip control module, also for notice message being sent to described OLT exchange chip control module; Described OLT exchange chip control module, also for determining to switch switching port corresponding to front circuit according to notice message; Described business association module, especially by determining that whether switch switching port corresponding to front circuit opens associated services, determines whether the associated services of switching front circuit opens.
As shown in Figure 8, business association module can integrated with OLT exchange chip control module together with.
Preferably, when OLT exchange chip control module opens associated services, PON chip control module is also opened associated services and is coordinated; Described business association module, especially by determining whether the PON mouth switching rear PON chip control module opens associated services, determines whether the associated services of switching front circuit opens.
As shown in Figure 9, described business association module can integrate with PON chip control module;
Preferably, this system also comprises: the network equipment, is connected with OLT exchange chip control module, and when OLT exchange chip control module opens associated services, the described network equipment is also opened associated services and coordinated; Described business association module, especially by determining whether the described network equipment opens associated services, determines whether the associated services of switching front circuit opens.
As shown in Figure 10, described business association module and the network equipment integrate.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (4)
1. a service restoration method after line switching, is characterized in that, comprising:
After passive optical network PON chip control module determination circuit generation line switching, structure notice message is also sent to business association module;
When the associated services that business association module determines to switch front circuit is opened, activating light road terminal OLT exchange chip control module, by all switching ports relevant to associated services, sends query message through PON chip control module to the user of associated services;
Wherein, business association module determines that the associated services of switching front circuit is opened, and comprising:
When after PON chip control module determination circuit generation line switching, structure notice message is also sent to OLT exchange chip control module, described OLT exchange chip control module is determined to switch switching port corresponding to front circuit according to notice message, described business association module is especially by determining that switching switching port corresponding to front circuit opens associated services, determines that the associated services of switching front circuit is opened; Or, when OLT exchange chip control module opens associated services, PON chip control module is also opened associated services and is coordinated, and described business association module, especially by determining that the PON mouth switching rear PON chip control module opens associated services, determines that the associated services of switching front circuit is opened; Or, when OLT exchange chip control module opens associated services, the network equipment be connected with OLT exchange chip control module is also opened associated services and is coordinated, described business association module, especially by determining that the described network equipment opens associated services, determines that the associated services of switching front circuit is opened;
The response message that the user that OLT exchange chip control module receives query message returns, is switched to the switching port at described response message place by described associated services.
2. the method for claim 1, is characterized in that, the type of service of described associated services is multicast service, then described query message is Internet Group Management Protocol igmp querying message, and described response message is specially IGMP response message.
3. method as claimed in claim 1 or 2, is characterized in that, described line switching is category-A, category-B, C class, D class or across OLT class line switching.
4. a business recovery system after line switching, is characterized in that, comprising:
Passive optical network PON chip control module, after determining circuit generation line switching, structure notice message is also sent to business association module;
Business association module, when associated services for determining to switch front circuit is opened, activating light road terminal OLT exchange chip control module, by all switching ports relevant to associated services, sends query message through PON chip control module to the user of associated services;
Wherein, described business association module determines that the associated services of switching front circuit is opened, specifically for:
When after PON chip control module determination circuit generation line switching, structure notice message is also sent to OLT exchange chip control module, described OLT exchange chip control module is determined to switch switching port corresponding to front circuit according to notice message, described business association module is especially by determining that switching switching port corresponding to front circuit opens associated services, determines that the associated services of switching front circuit is opened; Or, when OLT exchange chip control module opens associated services, PON chip control module is also opened associated services and is coordinated, and described business association module, especially by determining that the PON mouth switching rear PON chip control module opens associated services, determines that the associated services of switching front circuit is opened; Or, when OLT exchange chip control module opens associated services, the network equipment be connected with OLT exchange chip control module is also opened associated services and is coordinated, described business association module, especially by determining that the described network equipment opens associated services, determines that the associated services of switching front circuit is opened;
OLT exchange chip control module, for receiving the response message that the user that receives query message returns, is switched to the switching port at described response message place by described associated services.
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| CN102064885A (en) * | 2010-12-17 | 2011-05-18 | 武汉烽火网络有限责任公司 | Method and device for rapid protection switching of passive optical network (PON) ports in any slot position in 10 Gbit/s Ethernet PON (10G-EPON) system |
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