CN101834687A - Method, system and device for switching main and spare light access networks - Google Patents
Method, system and device for switching main and spare light access networks Download PDFInfo
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- CN101834687A CN101834687A CN200910106000A CN200910106000A CN101834687A CN 101834687 A CN101834687 A CN 101834687A CN 200910106000 A CN200910106000 A CN 200910106000A CN 200910106000 A CN200910106000 A CN 200910106000A CN 101834687 A CN101834687 A CN 101834687A
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Abstract
The embodiment of the invention discloses a method for switching main and spare light access networks. The method comprises the steps of: using a spare OLT device to monitor if a PON port thereof receives a continuous check report from a main OLT device, wherein the continuous check report carries the PON port status information of the main OLT device; judging if the PON port of the main OLT device is in failure through the spare OLT device according to the PON port status information of the main OLT device when the PON port thereof receives the continuous check report from the main OLT device; and starting the PON port of the spare OLT device when the PON port of the main OLT device is in failure. Through the method of the invention, the main and spare switch can be rapidly realized. The embodiment of the invention also discloses a light access network system and a light path terminal device.
Description
Technical field
The present invention relates generally to networking technology area, especially, relates to a kind of switching main and spare light access networks and system, and a kind of optical line terminal equipment that is used for Optical Access Network.
Background technology
Along with " light advances copper and moves back " becomes the main flow access way of network technology gradually, (Optical Access Network, OAN), particularly (Passive Optical Network, technology PON) and application obtain flourish EPON Optical Access Network.
For satisfying the disaster tolerance requirement of network system, industry proposes a kind of master-slave conversion system of Optical Access Network.Wherein, Optical Distribution Network (Optical Distributing Network, ODN) up direction is connected to main optical line terminal (the Optical Line Terminal that uses by main with optical fiber and standby optical fiber respectively, OLT) the PON port (being standby PON port) of PON port of equipment (the promptly main PON port of using) and spare OLT equipment, and described main network side with OLT equipment and spare OLT equipment further be connected to Element management system (Element Management System, EMS).
When the master broke down with the PON port, as originating port physical fault or fiber failure, described multi-plexing light accessing system need carry out the masterslave switchover of OLT equipment.Particularly, main with OLT equipment detecting described leading when breaking down with the PON port, report failure message to described EMS equipment.Described EMS equipment issues switching command to described spare OLT equipment after receiving failure message, and described spare OLT equipment is the described switching command of response further, starts described standby PON port.After described standby PON port started, described EMS equipment was further notified described main with the former main PON port of using of OLT device shutdown.After this, user's message is just up to described spare OLT equipment by described standby PON port.
Because the masterslave switchover process need of existing Optical Access Network uses EMS equipment to support, therefore whole process need depends on the not busy busy condition of EMS equipment, and described EMS equipment need just issue switching command to spare OLT equipment after receiving the main fault message that reports with OLT equipment, therefore when adopting existing switching main and spare light access networks, the switching time of masterslave switchover process is longer, is difficult to satisfy the requirement of switching fast.
Summary of the invention
In view of the above problems, the embodiment of the invention provides a kind of switching main and spare light access networks and system, and a kind of optical line terminal that is used for Optical Access Network.
The switching main and spare light access networks that one embodiment of the invention provides, comprise: whether its PON port of spare OLT monitoring of tools receives the continuous review message of independently using OLT equipment, and wherein said continuous review message carries described main PON port status information with OLT equipment; When the PON of described spare OLT equipment port receives the described continuous review message of independently using OLT equipment, described spare OLT equipment judges with the PON port status information of OLT equipment whether described main PON port with OLT equipment breaks down according to described master, and is judging the PON port that starts described spare OLT equipment when described main PON port with OLT equipment breaks down.
The switching main and spare light access networks that another embodiment of the present invention provides, comprise: an OLT equipment offers the 2nd OLT equipment by the first continuous review message with the state information of first network port, starts second network port to notify described the 2nd OLT equipment when described first network port breaks down; A described OLT equipment receives the second continuous review message from described the 2nd OLT equipment, and judge by the described second continuous review message whether described second network port starts, and when starting, described second network port closes described first network port.
The optical access network system that one embodiment of the invention provides comprises: an OLT equipment is used to send the first continuous review message that carries a PON port status information; The 2nd OLT equipment, be used to receive the described first continuous review message and judge by the PON port status information that it carries whether a described PON port breaks down, and when a described PON port breaks down, start the 2nd PON port, and send to a described OLT equipment and to be used to the second continuous review message of representing that described the 2nd PON port has started; Wherein, a described OLT equipment also is used for closing a described PON port when receiving the described second continuous review message.
The optical access network system that another embodiment of the present invention provides, comprise main with OLT equipment and spare OLT equipment, it is characterized in that: whether described spare OLT equipment is used to monitor its PON port and receives in scheduled time slot from described main with OLT equipment and carry the continuous review message of the PON port status information of described main usefulness OLT equipment, when receiving the described continuous review message of independently using OLT equipment, mainly judge with the PON port status information of OLT equipment whether the described PON port of leading with OLT equipment breaks down, and judging the PON port that starts described spare OLT equipment when the described PON port of leading with OLT equipment breaks down according to described; Perhaps, when not receiving the described continuous review message of independently using OLT equipment in itself and the main link trace that starts on the link between the OLT equipment judging whether described link breaks down, and break down and described fault occurs in described main uplink port or the described main PON port that starts described spare OLT equipment during with the passage of OLT equipment between BAS Broadband Access Server with OLT equipment at described link.
The optical line terminal that the embodiment of the invention provides, comprise continuous review message receiver module, be used to receive the first continuous review message from outside OLT equipment, the wherein said first continuous review message carries the PON port status information of described outside OLT equipment; The port controlling module is used for judging according to described PON port status information whether the PON port of described outside OLT equipment breaks down, and starts local PON port when the PON of described outside OLT equipment port breaks down; Continuous review message sending module is used for sending the second continuous review message to described outside OLT equipment when local PON port starts, to notify described its PON port of outside OLT device shutdown.
Described switching main and spare light access networks of the embodiment of the invention and system, spare OLT equipment and the main PON port status that can know the other side with OLT equipment according to the continuous review message that the other side sends, and further start/close corresponding PON port, the master need not by Element management system with the switching between OLT equipment and the spare OLT equipment, therefore can realize finishing fast of masterslave switchover.
Description of drawings
The flow chart of the switching main and spare light access networks that Fig. 1 provides for the embodiment of the invention.
The Signalling exchange figure of the switching main and spare light access networks that Fig. 2 provides for the embodiment of the invention.
The structural representation of the optical access network system that Fig. 3 provides for the embodiment of the invention.
Fig. 4 provides the structural representation of optical line terminal for the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further elaborated.
The embodiment of the invention is to be implemented in the quick switching of leading in the Optical Access Network with OLT equipment and spare OLT equipment, and a kind of switching main and spare light access networks is provided.Described main and standby rearranging method can be applicable to EPON, particularly, main with can be between OLT equipment and the spare OLT equipment by sending out continuous review message (Continuity Check Message, CCM) direct mutual active and standby PON port status information, and carry out port thus and switch periodically mutually.Wherein, described continuous review message is the multicast message based on Ethernet OAM mechanism of IEEE 802.1ag standard definition; According to IEEE 802.1ag standard, (Maintenance Association, (Maintenance association EndPoint MEP) can receive the continuous review message that other MEP send to maintenance association end points MA) to belong to same maintenance association collection.
See also Fig. 1, in one embodiment, at first, its PON port of spare OLT monitoring of tools (hereinafter referred to as: standby PON port) whether receive continuous review (CC) message of independently using OLT equipment, wherein said CC message carries described main PON port with OLT equipment (hereinafter referred to as the main PON port of using) state information.Secondly, when receiving the described continuous review message of independently using OLT equipment, described spare OLT equipment judges according to described leading with PON port status information whether described leading breaks down with the PON port; If described master is broken down the described standby PON port of described spare OLT device start with the PON port.Adopt above-mentioned main and standby rearranging method, spare OLT equipment and the main PON port status that can know the other side with OLT equipment according to the CC message that the other side sends, and further start/close corresponding PON port, the switching of active and standby OLT equipment need not by Element management system, therefore can realize finishing fast of masterslave switchover.
Further, described spare OLT equipment also can pass through to the described main mode that sends the CC message with OLT equipment the described master of message informing that described standby PON port starts to be used OLT equipment, so that described main with the described main PON port of using of OLT device shutdown.
Further, describedly main can create maintenance association end points respectively at its PON port based on identical maintenance association collection with OLT equipment and spare OLT equipment.Described master can carry out the directly mutual of CC message by described maintenance association end points with OLT equipment and spare OLT equipment, and obtains the PON port status information of opposite end fast by described CC message.
Further, the described CC message PON port status information of carrying can comprise PON port status TLV option and PON Interface status TLV option.Wherein, described PON port status TLV option is used to represent the ability of the PON port transmission data message at corresponding maintenance association end points place, and described PON Interface status TLV option is used to identify the physical state of corresponding interface.Described spare OLT equipment can be known described main whether break down with the PON port with leading of OLT equipment by described PON port status TLV option and PON Interface status TLV option, and to diagnose out be originating port physical fault or fiber failure.Further, described main with OLT equipment and spare OLT equipment can by Element management system the configuration phase of static configuration information issue simultaneously to realize the static synchronous of the two; And for the multidate information of ONU registration, described spare OLT equipment can receive described main dynamic configuration information with the PON port by the TLV option that further expands at described continuous review message, and carries out described standby PON port arrangement so that it is with described main with OLT equipment in real time synchronous (dynamic synchronization) according to described dynamic configuration information.
Further, when the PON of described spare OLT equipment port does not receive the described continuous review message of independently using OLT equipment in scheduled time slot, described spare OLT equipment, and breaks down and described fault occurs in described main uplink port or the described main PON port that starts described spare OLT equipment during with the passage of OLT equipment between BAS Broadband Access Server with OLT equipment at described link judging whether described link breaks down in itself and the main link trace that starts on the link between the OLT equipment.And described master can further close the described main PON port of using with OLT equipment.
Such as, described main with OLT equipment and spare OLT equipment uplink port and the access interface of BAS Broadband Access Server can dispose respectively the maintenance association intermediate node (Maintenance association Intermediate Point, MIP).When described spare OLT equipment does not receive from described main CC message with OLT equipment in scheduled time slot, described spare OLT equipment can itself and described main with the link between the OLT equipment on, start link trace (Link Trace) function by described MEP and MIP and carry out up failure diagnosis, to determine data feedback channel fault occurrence positions.In one embodiment, described spare OLT equipment sends link trace message (Link Trace Message by its MEP to described link, LTM), and according to the link trace response of being returned by described MIP (Link Trace Response LTR) determines data feedback channel fault occurrence positions.
See also Fig. 2, the flow chart of the switching main and spare light access networks that it provides for the embodiment of the invention.Particularly, described switching main and spare light access networks comprises:
Step 201, the main state information of using PON port and standby PON port with OLT equipment and spare OLT equipment by CC message interaction master.
In an embodiment, described master can comprise a MEP who is created in its PON port (the promptly main PON port of using) with OLT equipment, and spare OLT equipment can comprise the 2nd MEP that is created in its PON port (being standby PON port).A described MEP and the 2nd MEP can be configured based on the Ethernet OAM agreement, and the two belongs to identical MA.Described master can periodically receive and dispatch the PON port status information that the CC message obtains the opposite end by a described MEP and the 2nd MEP respectively with OLT equipment and spare OLT equipment, thereby realizes the mutual of active and standby PON port status information.
Particularly, main OLT equipment and the spare OLT equipment used can be carried out the continuous review function by a described MEP and the 2nd MEP respectively, and sends the CC message in multicast domain.For example, in one embodiment, described master can send by a described MEP with OLT equipment carry a described main CC message with PON port status information, and the inner address configuration with a described MEP of described the 2nd MEP is the MEP source address of expectation.Further, described spare OLT equipment receives after the CC message by described the 2nd MEP, the MEP source address of itself and described expectation is compared, whether mainly use OLT equipment from described to confirm described CC message, the CC message of promptly confirming its reception is a described CC message.
Entrained described main of a described CC message of independently using OLT equipment can comprise the port status TLV of described main usefulness PON port and Interface status TLV etc. with PON port status information.Described port status TLV is used to represent the ability of the PON port transmission data message at corresponding maintenance association end points place, and described Interface status TLV is used to identify the physical state of corresponding interface.
Wherein, the entrained port status TLV form about main PON port of a CC message of described MEP transmission can be as follows:
Type: take 1 byte (Byte), Type=2;
Length: take 2～3 bytes;
Value: take 4 bytes; When port breaks down, Value=1; When port just often, Value=2.
In addition, the entrained Interface status TLV form about main PON port of a CC message of described MEP transmission can be as follows:
Type: take 1 byte, Type=4;
Length: take 2～3 bytes;
Value: take 4 bytes; When a described MEP sends CC message, Value=1 from the bridge repeated direction; When a described MEP sends CC message, Value=2 from the physical medium direction.
Step 202, described spare OLT equipment judges with PON port status information whether described master breaks down with the PON port by described master.
Described spare OLT equipment receives described carrying after the main CC message with PON port status information, described main to from a described CC message, extracting with PON port status information, and described port status TLV and Interface status TLV analyzed, to judge described mainly whether break down with the PON port; If break down, further diagnosing out is originating port physical fault or fiber failure
At first, the described port status TLV of described spare OLT device analysis.If the Value=1 of described port status TLV, described spare OLT equipment judge described main with PON port operate as normal; If judging described master, the Value=2 of described port status TLV, described spare OLT equipment break down with the PON port.
Secondly, described main when breaking down with the PON port when judging, described spare OLT equipment is the described Interface status TLV of analysis further.If the Value=1 of described Interface status TLV, described spare OLT is diagnosed out described main with PON port generation physical fault; If the Value=2 of described Interface status TLV, described spare OLT is diagnosed out described main normal with the PON ports physical, but fiber failure takes place.By diagnosing described main concrete fault type, can be convenient to that follow-up it is mainly safeguarded with the PON port described accurately and effectively with the PON port.
Further, for preventing flase drop, guarantee the accuracy of fault judgement, described spare OLT equipment can continuous several times receive with the main corresponding CC message that breaks down with the PON port after, just make final judgement conclusion.
Further, if judging described master, described spare OLT equipment breaks down execution in step 203 with the PON port.
Step 203, the standby PON port of described spare OLT device start.Particularly, main judge described leading when breaking down by what a described CC message carried, start the standby PON port of itself immediately with the PON port with PON port status information when described spare OLT equipment.
Step 204, described main OLT equipment and the spare OLT equipment used is by the main alternately once more state information with PON port and standby PON port of CC message.
In one embodiment, because described main CC message with OLT equipment and spare OLT equipment is to send out periodically mutually, after described standby PON port starts, the standby PON port status information that described spare OLT equipment upgraded to the transmission of the described main OLT of using equipment by the 2nd CC message in next CC packet sending and receiving cycle, as the port status TLV and the Interface status TLV of standby port, thereby the described master of message informing that described standby PON port has started is used OLT equipment.
Step 205, the described main OLT equipment of using is closed the described main PON port of using according to described the 2nd CC message.
Described main receive described the 2nd CC message with OLT equipment after, its described standby PON port status information of carrying is analyzed, thereby is known described standby PON port is started.At this moment, described master just closes described master immediately with OLT equipment and uses the PON port, to avoid conflict.
So far, described main with OLT equipment and described spare OLT equipment just by directly finishing automatic switchover alternately.Because described switching does not need by Element management system, whole masterslave switchover process can be finished fast, such as, described masterslave switchover process can be finished within 50ms.
In addition, may occur in the real work described main with OLT equipment lead with PON port operate as normal that its uplink port or data feedback channel break down the time, user configuration information and business datum etc. can't report Element management system with OLT equipment by described master in this case, can influence the operate as normal of described Optical Access Network this moment equally, therefore also need to carry out masterslave switchover.
For the failure diagnosis and the correspondence that realize OLT equipment data feedback channel are carried out masterslave switchover, further, described main with the configurable MIP that carries out link trace (Link Trace) that is useful on the link between OLT equipment and the spare OLT equipment.Described MIP can be configured in described main with the uplink port of OLT equipment and the access interface of BAS Broadband Access Server at least.In one embodiment, described master disposes MIP respectively with the uplink port of OLT equipment and spare OLT equipment and the access interface of BAS Broadband Access Server, below is called a MIP, the 2nd MIP and the 3rd MIP.Described master can carry out link trace by a described MEP, a MIP, the 2nd MIP, the 3rd MIP and the 2nd MEP with OLT equipment and spare OLT equipment.
When described main uplink port or data feedback channel when breaking down with OLT equipment or spare OLT equipment, describedly mainly take place to cause unusually the two can't normally receive CC message from the opposite end with the network between OLT equipment and the spare OLT equipment.
Be head it off, in one embodiment, spare OLT equipment at first monitors whether receive the CC message of independently using OLT equipment in scheduled time slot; When receiving the described CC message of independently using OLT equipment, described OLT equipment can be handled as shown in Figure 2; In described scheduled time slot, do not receive described continuous review message and work as described spare OLT equipment, described spare OLT equipment, and breaks down and described fault occurs in described main uplink port or the main PON port that starts described spare OLT equipment during with the passage of OLT equipment between BAS Broadband Access Server with OLT equipment at described link judging whether described link breaks down in itself and the main link trace that starts on the link between the OLT equipment
Particularly, when described spare OLT equipment is not received from described main CC message with OLT equipment in scheduled time slot, the link trace that described spare OLT equipment is carried out can be as follows: described the 2nd MEP of described OLT equipment utilization to described be created in a main MEP with OLT equipment send link trace message (Link Trace Message, LTM).Described LTM carries the MAC Address of purpose MEP (i.e. a MEP), and described LTM will transmit to a described MEP through the forwarding of described the 2nd MIP, the 3rd MIP and a MIP.
In described LTM transmission course, MIP on the way when receiving described LTM, all link trace responses of returning to the promoter (i.e. the 2nd MEP) of described LTM (Link Trace Response, LTR).Described the 2nd MEP and then the position of determining to take place link failure according to described LTR.For instance, when the data feedback channel of OLT equipment breaks down, on the path between described the 2nd MEP and the MEP, being positioned at the position MIP before that breaks down can return LTR to described the 2nd MEP, and the MIP that is positioned at after the position of breaking down can't return LTR to described the 2nd MEP.Thus, described the 2nd MEP just can be known MAC Address and its position with respect to initiation MEP of the MIP that receives LTM on the way by its LTR that receives, and occurs between the lane place of link failure.
At last, described spare OLT equipment carries out fault warning or carries out the PON port with described master with OLT equipment switching according to the position that link failure takes place.Particularly, when the position of breaking down when being the uplink port of spare OLT equipment, spare OLT equipment or spare OLT equipment to the passage of BAS Broadband Access Server, described spare OLT equipment does not carry out the PON port and switches, and only carries out fault warning by described spare OLT equipment.And when the position of breaking down be main with OLT equipment, main uplink port with OLT equipment or main with OLT equipment during to the passage of BAS Broadband Access Server, described spare OLT equipment will mainly carry out the switching of PON port with OLT equipment with described.
As seen, in the switching main and spare light access networks that the embodiment of the invention provides, not only can when the master physical fault or fiber failure occur with the PON port, carry out the masterslave switchover of quick landlord automatically, but also can when main data feedback channel with OLT equipment breaks down, also carry out masterslave switchover automatically by the CC message with OLT equipment and spare OLT equipment.As seen, the embodiment of the invention can further improve the reliability of Optical Access Network.
Based on above-mentioned switching main and spare light access networks, the embodiment of the invention further provides a kind of optical access network system that can realize masterslave switchover fast.See also Fig. 3, the optical access network system 100 that an embodiment of the present invention provides comprises:
The one OLT equipment 110, it can be used as the main OLT equipment of using of described Optical Access Network;
The 2nd OLT equipment 120, it can be used as the spare OLT equipment of described Optical Access Network;
A plurality of ONU unit 140, it is used to the user that User Network Interface is provided, and is connected to the user side of described Optical Distribution Network 130;
BAS Broadband Access Server 160, the edge that it is arranged at network is used to provide broadband inserting service.
Wherein, a described OLT equipment 110 is used for sending a CC message of the state information that carries its network port (a PON port), and a described PON port status information is used to represent whether the PON port of a described OLT breaks down.
Described the 2nd OLT equipment 120 is used to receive a described CC message and judges by the PON port status information that it carries whether a described PON port breaks down, and the PON port that described the 2nd OLT also is used in a described OLT starts the network port (the 2nd PON port) of itself when breaking down, and the described OLT of message informing that further utilizes the 2nd CC message that described the 2nd PON port is started, so that a described OLT closes a described PON port.
Further, a described OLT equipment 110 can comprise a MEP (maintenance association end points) 111 who is arranged on a described PON port, and described the 2nd OLT equipment 120 can comprise the 2nd MEP121 that described the 2nd PON port is set.A described MEP111 belongs to identical MA (maintenance association collection) with the 2nd MEP121, and the two is respectively as the fringe node of described MA, and can carry out alternately the state information of a described PON port and the 2nd PON port by the CC message.
Particularly, a described MEP111 is used to send a described CC message, and receives described the 2nd CC message when described spare OLT device shutdown.Described the 2nd MEP121 is used to receive a described CC message, and sends described the 2nd CC message to a described MEP111 when described spare OLT device shutdown.Wherein, described the 2nd CC message carries the state information of described the 2nd PON port, and it is used to represent that described the 2nd PON port opened and notify an OLT equipment 110 to close a described PON port.
Further, a described OLT equipment 110 also can comprise a MIP (maintenance association intermediate node) 112 of capable port disposed thereon, described the 2nd OLT equipment 120 also can comprise the 2nd MIP122 of capable port disposed thereon, and described BAS Broadband Access Server 160 can be provided with the 3rd MIP162 at its access interface.Described first, second, third MIP112,122,162 all belongs to described MA, and supports the link following function respectively.
Further, described first, second, third MIP112,122,162 can be used for the link trace message of being sent by MEP111,121 is transmitted and the return link tracking response, and the OLT equipment 110,120 of initiating link trace with notice carries out switching of PON port or fault warning.Such as, when described the 2nd MEP121 when scheduled time slot does not receive a CC message from a described MEP111, it can send link trace message to a described MEP111.Wherein, described the 2nd MIP122 can be used for the described link trace forwards of being sent by the 2nd MEP121 to described the 3rd MIP113, and to described the 2nd MEP121 return link tracking response.Described the 3rd MIP162 can be used for the link trace forwards of its reception to described MIP112, and to described MEP121 return link tracking response.A described MIP112 can be used for the link trace forwards of its reception to a described MEP111, and to described the 2nd MEP121 return link tracking response.Thus, by the response of described link trace, described the 2nd OLT equipment 120 just can be determined the particular location that breaks down, and the step of going forward side by side is carried out PON port translation or fault warning.
Further, the optical access network system that another embodiment of the present invention provides can comprise main with OLT equipment and spare OLT equipment, wherein, whether described spare OLT equipment is used to monitor its PON port and receives in scheduled time slot from described main with OLT equipment and carry the continuous review message of the PON port status information of described main usefulness OLT equipment, when receiving the described continuous review message of independently using OLT equipment, mainly judge with the PON port status information of OLT equipment whether the described PON port of leading with OLT equipment breaks down, and judging the PON port that starts described spare OLT equipment when the described PON port of leading with OLT equipment breaks down according to described; Perhaps when not receiving the described continuous review message of independently using OLT equipment in itself and the main link trace that starts on the link between the OLT equipment judging whether described link breaks down, and break down and described fault occurs in described main uplink port or the described main PON port that starts described spare OLT equipment during with the passage of OLT equipment between BAS Broadband Access Server with OLT equipment at described link.
Based on the optical access network system that the embodiment of the invention provides, the embodiment of the invention also further provides a kind of optical line terminal OLT equipment.See also Fig. 4, the OLT equipment 400 that the embodiment of the invention provides can comprise:
Continuous review message receiver module 410, it is used to receive the CC message from outside OLT equipment, and a wherein said CC message carries the PON port status information of described outside OLT equipment;
Continuous review message sending module 430, be used for when local PON port starts, sending the 2nd CC message to described outside OLT equipment, wherein said the 2nd CC message carries the state information of described local PON port, and is used to notify described its PON port of outside OLT device shutdown.
Further, described OLT equipment 400 also can further comprise:
Link trace message generation module 440, it is used for producing concurrent outgoing link tracking message when described CC message receiver module 410 when scheduled time slot does not receive a described CC message;
Link trace response receiver module 450, it is used to receive the link trace response of being returned by inside or peripheral link trace information retransmission unit, described inner link trace information retransmission unit can be arranged at the uplink port of described OLT equipment 400, and described outer link trace Dispatch Unit can be arranged at the uplink port of BAS Broadband Access Server and described outside OLT equipment at least;
Up fault diagnosis module 460, it is used for responding according to the link trace that described link trace response receiver module 450 receives, determine the occurrence positions of up fault, and when up fault occurs in described outside OLT equipment or its data feedback channel, notify described port controlling module 420 to start local PON port; And when up fault occurs in local data feedback channel, notify described port controlling module 420 to carry out fault warning.
Further, described OLT equipment 400 also can comprise maintenance association end points (MEP), it is created in the local PON port of described OLT equipment 400, and described continuous review message receiver module 410, continuous review message sending module 430, link trace message generation module 440, link trace response receiver module 450 can be integrated in described maintenance association end points inside.Described OLT equipment 400 also can comprise maintenance association intermediate node (MIP), and it is configured in the uplink port of described OLT equipment 400, and described inner link trace information retransmission unit can be arranged at described maintenance association intermediate node inside.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (11)
1. a switching main and spare light access networks is characterized in that, comprising:
Whether its PON port of spare OLT monitoring of tools receives the continuous review message of independently using OLT equipment, and wherein said continuous review message carries described main PON port status information with OLT equipment;
When the PON of described spare OLT equipment port receives the described continuous review message of independently using OLT equipment, described spare OLT equipment judges with the PON port status information of OLT equipment whether described main PON port with OLT equipment breaks down according to described master, and is judging the PON port that starts described spare OLT equipment when described main PON port with OLT equipment breaks down.
2. switching main and spare light access networks as claimed in claim 1 is characterized in that, also comprises:
Described spare OLT equipment main sends the continuous review message of the PON port status information that carries described spare OLT equipment with OLT equipment to described, and the message informing that has started with the PON port with described spare OLT equipment is described main with OLT equipment and make it close the PON port that described master uses OLT equipment.
3. switching main and spare light access networks as claimed in claim 2, it is characterized in that, described master disposes the maintenance association end points respectively with the PON port of OLT equipment and the PON port of spare OLT equipment, and described master carries out the mutual of continuous review message by its maintenance association end points respectively with OLT equipment and spare OLT equipment.
4. switching main and spare light access networks as claimed in claim 1, it is characterized in that, also comprise: the TLV option of described spare OLT equipment from the described continuous review message of independently using OLT equipment obtains PON port dynamic configuration information, and disposes the PON port of described spare OLT equipment so that itself and described main PON port with OLT equipment are synchronous according to described PON port dynamic configuration information.
5. switching main and spare light access networks as claimed in claim 1 is characterized in that, also comprises:
When the PON of described spare OLT equipment port does not receive the described continuous review message of independently using OLT equipment in scheduled time slot, described spare OLT equipment, and breaks down and described fault occurs in described main uplink port or the described main PON port that starts described spare OLT equipment during with the passage of OLT equipment between BAS Broadband Access Server with OLT equipment at described link judging whether described link breaks down in itself and the main link trace that starts on the link between the OLT equipment.
6. switching main and spare light access networks as claimed in claim 5 is characterized in that, the step of described startup link trace comprises:
The maintenance association intermediate node of described spare OLT equipment in described link sends link trace message, and the link trace of returning according to described maintenance association intermediate node response determines the occurrence positions of fault, and wherein said maintenance association intermediate node is configured in the access interface and the described main uplink port with OLT equipment of described BAS Broadband Access Server at least.
7. a switching main and spare light access networks is characterized in that, comprising:
The one OLT equipment offers the 2nd OLT equipment by the first continuous review message with the state information of first network port, starts second network port to notify described the 2nd OLT equipment when described first network port breaks down;
A described OLT equipment receives the second continuous review message from described the 2nd OLT equipment, and judge by the described second continuous review message whether described second network port starts, and when starting, described second network port closes described first network port.
8. an optical access network system is characterized in that, comprising:
The one OLT equipment is used to send the first continuous review message that carries a PON port status information;
The 2nd OLT equipment, be used to receive the described first continuous review message and judge by the PON port status information that it carries whether a described PON port breaks down, and when a described PON port breaks down, start the 2nd PON port, and send to a described OLT equipment and to be used to the second continuous review message of representing that described the 2nd PON port has started;
Wherein, a described OLT equipment also is used for closing a described PON port when receiving the described second continuous review message.
9. an optical access network system comprises main OLT equipment and the spare OLT equipment used, and it is characterized in that:
Whether described spare OLT equipment is used to monitor its PON port and receives in scheduled time slot from described main with OLT equipment and carry the continuous review message of the PON port status information of described main usefulness OLT equipment, and, when receiving the described continuous review message of independently using OLT equipment, mainly judge with the PON port status information of OLT equipment whether the described PON port of leading with OLT equipment breaks down, and judging the PON port that starts described spare OLT equipment when the described PON port of leading with OLT equipment breaks down according to described; Perhaps, when not receiving the described continuous review message of independently using OLT equipment in itself and the main link trace that starts on the link between the OLT equipment judging whether described link breaks down, and break down and described fault occurs in described main uplink port or the described main PON port that starts described spare OLT equipment during with the passage of OLT equipment between BAS Broadband Access Server with OLT equipment at described link.
10. an optical line terminal OLT equipment is characterized in that, comprising:
Continuous review message receiver module is used to receive the first continuous review message from outside OLT equipment, and the wherein said first continuous review message carries the PON port status information of described outside OLT equipment;
The port controlling module is used for judging according to described PON port status information whether the PON port of described outside OLT equipment breaks down, and starts local PON port when the PON of described outside OLT equipment port breaks down;
Continuous review message sending module is used for sending the second continuous review message to described outside OLT equipment when local PON port starts, to notify described its PON port of outside OLT device shutdown.
11. OLT equipment as claimed in claim 10 is characterized in that, also comprises:
Link trace message generation module is used for producing concurrent outgoing link tracking message when described continuous review message receiver module does not receive the described first continuous review message in scheduled time slot;
Link trace response receiver module is used to receive the link trace response of being returned according to described link trace message by link trace information retransmission unit;
Up fault diagnosis module is used for determining the occurrence positions of up fault according to described link trace response.
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| CN200910106000A CN101834687A (en) | 2009-03-11 | 2009-03-11 | Method, system and device for switching main and spare light access networks |
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| CN200910106000A CN101834687A (en) | 2009-03-11 | 2009-03-11 | Method, system and device for switching main and spare light access networks |
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