CN102064885A - 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 - Google Patents
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 Download PDFInfo
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Abstract
The invention discloses a method and device for rapid protection switching of passive optical network (PON) ports in any slot position in a 10 Gbit/s Ethernet PON (10G-EPON) system. The method comprises the following steps: a plurality of PON service protection switching groups formed by two identical PON service cards are arranged on an optical line terminal (OLT); any PON port on one PON service card and any PON port on the other PON service card in each PON service protection switching group are configured as main and standby PON ports respectively; and complex programmable logic devices (CPLDs) on the PON service cards respectively detect the working condition of each autonomous PON port in real time, close optical modules on the main PON ports and notify the other PON service card of enabling the optical modules on the corresponding standby PON ports via protection switching data frames when lost of synchronous (LOS) signals on one or more main PON ports are detected on one PON service card. In the invention, the CPLDs are adopted to detect and judge the switching conditions and control switching, thus avoiding the problem of long switching time caused by using software for treatment and effectively ensuring rapid recovery of services when a single disk or main optical fiber has a fault.
Description
Technical field
The present invention relates to the protection of 10G-EPON grid, be specifically related to method, the device of any groove position PON port quick protective switch in the 10G-EPON system.
Background technology
PON (Passive Optical Network) is a kind of fiber broadband access technology of emerging last kilometer of covering, it does not need node device at optical branch point, only need to install a simple optical branching device, therefore have the cable resource of saving, machine room investment, no electromagnetic interference, device security height are shared, saved to bandwidth resources, networking speed soon, comprehensive networking low cost and other advantages.
Saving trunk optical fiber is a very large advantage of PON system, but this has also brought a risk simultaneously, in case the trunk optical fiber in this PON system breaks down, will cause being connected to all optical network units (ONU) interrupt communication simultaneously on this trunk optical fiber; In addition, system's port and out of order possibility of single-deck of also existing the optical module that connects trunk optical fiber to be out of order and connecting trunk optical fiber.Therefore, in order to strengthen the reliability of PON system works, needs are a kind of efficiently, reliable protection is switched scheme; when trunk optical fiber breaks down; can realize quick protective switch, realize that in the short as far as possible time protection of business is switched, not influence user's use.
In order to solve this technical barrier, need when the PON system design, consider fully, provide reliably protection efficiently to switch scheme.PON industry standard (as the EPON national standard draft of China " access network technology requires---based on the EPON (EPON) of Ethernet mode ") about protection PON system recommendations two kinds of methods: trunk optical fibre protection inverting and all-fiber protection switching.
The scheme that trunk optical fibre protection inverting adopts is; OLT adopts single PON mouth; PON mouth place is provided with 1 * 2 optical switch; adopt the 2:N optical branching device between optical branching device and OLT, set up two independently, the optical fiber link of backup mutually; state by OLT detection fiber link; in case the master uses the optical fiber link occurs fault, switches to standby optical fiber link.
All-fiber protection has dual mode, a kind of is that OLT adopts two PON ports, all in running order, before the PON port of ONU 1 * 2 optical switch is set, adopt the 2:N optical branching device, between optical branching device and OLT, set up two independently, the mutual optical fiber link of backup, in case mainly use the optical fiber link occurs fault, switch to standby optical fiber link; Another, the OLT side is identical with first kind with optical splitter, adopts two PON mouths in the ONU side, and system adopts the Hot Spare protected mode.All-fiber protection switching to the PON mouth of the PON mouth of OLT, ONU, optical branching device and all optical fiber back up reliability height but cost is bigger.
At present; also having a kind of protected mode is OLT PON mouth protection switchover mode; OLT adopts two PON mouths; standby PON mouth is in the cold standby state; adopt the 2:N optical branching device; between optical branching device and OLT, set up two independently, the mutual optical fiber link of backup, in case mainly use the optical fiber link occurs fault, switch to standby optical fiber link.
From several protection switchover modes above-mentioned as can be known, optical fibre protection inverting is the registration scenarios of the CPU of OLT by software detection ONU, thereby judges whether trunk optical fiber breaks down, and passes through optical switch switch operating optical fiber and protection optical fiber when breaking down.Owing to need software to carry out fault detect, therefore protection time of switching is subjected to certain restriction, and the CPU of OLT also can influence the realization that protection is switched when breaking down.
Summary of the invention
Technical problem to be solved by this invention is to solve to improve 10G-EPON system protection switching time and reliability problems.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention provides in a kind of 10G-EPON system method of groove position PON port quick protective switch arbitrarily, can realize any groove position PON card port quick protective switch, may further comprise the steps:
Some groups of PON service protections are set on OLT switch group, every group of described PON service protection switched group and comprised two identical PON service cards;
In Port Protection Switching is provided with, every group of described PON service protection switched arbitrary PON mouth on the PON service card in the group and the arbitrary PON mouth on another piece PON service card is configured to active and standby each other PON mouth, make some described main PON mouths in running order then, make the corresponding described PON mouth that is equipped be in stand-by state;
Switch in single-deck protection and to be provided with, two PON service cards every group of described PON service protection being switched group are configured to active and standby each other PON service card respectively, all of the port on the wherein said main PON service card is main PON mouth, described each port that is equipped with on the PON service card is respectively the fully PON mouth corresponding with described main PON mouth, make whole described main PON mouths in running order then, make the corresponding described PON mouth that is equipped be in stand-by state;
Described PON service protection is switched the operating state that CPLD on two PON service cards in the group detects all the main PON mouths on the PON service card separately respectively in real time, and sends protection simultaneously and switch Frame and notify the other side; When the CPLD on PON service card wherein detects the LOS signal of the one or more main PON mouth on this PON service card; close the optical module on this main PON mouth, and switch Frame by protection and notify CPLD on another piece PON service card to enable to be equipped with accordingly optical module on the PON mouth.
In said method; described protection is switched Frame and is made up of the bit position of the Card Type of some bit representation PON service cards and the bit position of some bit representation PON mouth operating states; the bit position of each described expression PON mouth operating state is corresponding with the operating state of a main PON mouth on this PON service card respectively; when protection is switched CPLD on the arbitrary PON service card in the group and is detected the LOS signal of the arbitrary PON mouth on this service card in real time; close the optical module on this PON mouth; generate simultaneously and comprise the Card Type of this PON service card and to represent that the protection of all the PON mouth operating states on this PON service card switches Frame; and be sent to this PON service protection and switch CPLD on another piece PON service card in the group; when detecting the LOS signal, the corresponding bit position that the main PON mouth los state on this PON service card of expression in the Frame is switched in described protection becomes 0 by 1.
In said method; after described PON service protection is switched CPLD on the PON service card in the group and is received that Frame is switched in protection; resolve to obtain to send the Card Type of the PON service card that protection switches Frame and all bit positions and be 0 the pairing main PON slogan in bit position; if it is identical with the Card Type of himself to resolve the type of the PON service card that obtains; then enable to be equipped with accordingly the optical module on the PON mouth, switch Frame otherwise ignore this protection.
In said method; to switch the bit position of the Card Type of expression PON service card in the Frame be complete 0 or complete 1 if the PON service protection is switched protection that the CPLD on the PON service card in the group receives; then close this PON service protection and switch optical module on all PON mouths on another piece PON service card in the group, and the optical module on all the PON mouths on this PON service card is enabled.
The present invention also provides in a kind of 10G-EPON system the outspoken speed protection of groove position PON changeover apparatus arbitrarily, described 10G-EPON system comprises OLT, described OLT is provided with main control card, also be provided with some groups of PON service protections on the described OLT and switch group, every group of described PON service protection switched group and comprised two identical PON service cards, have several PON mouths respectively on the every described PON service card, and any the PON mouth on any the PON mouth on PON service card of described main control card and another piece PON service card is set to main each other, be equipped with the PON mouth, described master, the optical module that is equipped with on the PON mouth links to each other with two redundant each other trunk optical fibers respectively; Every group of described PON service protection switched on the every PON service card in the group and is respectively equipped with CPLD and passes through backplane interconnect; described CPLD detects the operating state of all the main PON mouths on the PON service card separately respectively in real time; and according to whether the LOS signal of each the main PON mouth on detected each PON service card; obtain whether to need this main PON mouth is carried out the judged result of PON Port Protection Switching; when judged result shows need carry out the PON Port Protection Switching time; close the optical module on this main PON mouth, send protection simultaneously and switch Frame and notify CPLD on another piece PON service card to enable to be equipped with accordingly optical module on the PON mouth.
In said apparatus; described protection is switched Frame and is made up of the bit position of the Card Type of some bit representation PON service cards and the bit position of some bit representation PON mouth operating states; the bit position of each described expression PON mouth operating state respectively with this PON service card on the operating state of a main PON mouth want corresponding; when protection is switched CPLD on the arbitrary PON service card in the group and is detected the LOS signal of arbitrary PON mouth on this service card in real time; described CPLD closes the optical module on this PON mouth; generate simultaneously and comprise the Card Type of this PON service card and to represent that the protection of all the PON mouth operating states on this PON service card switches Frame; and be sent to this PON service protection and switch CPLD on another piece PON service card in the group; when detecting the LOS signal, the corresponding bit position that described CPLD switches the main PON mouth operating state on this PON service card of expression in the Frame with described protection becomes 0 by 1.
In said apparatus; after described PON service protection is switched CPLD on the PON service card in the group and is received that Frame is switched in protection; resolve to obtain to send the Card Type of the PON service card that protection switches Frame and all bit positions and be the main PON slogan on pairing this PON service card in bit position of 0; if it is identical with the Card Type of himself to resolve the Card Type of the PON service card that obtains; then enable to be equipped with accordingly the optical module on the PON mouth, switch Frame otherwise ignore this protection.
In said apparatus; the PON service protection is switched protection that the CPLD on the PON service card in the group receives, and to switch the bit position of the Card Type of expression PON service card in the Frame be complete 0 or complete 1; then close this PON service protection and switch optical module on all PON mouths on another piece PON service card in the group, and the optical module on all the PON mouths on this PON service card is enabled.
The present invention also provides a kind of 10G-EPON system of groove position PON port quick protective switch device arbitrarily that adopts in the above-mentioned 10G-EPON system.
The present invention, adopt hardware logic CPLD switch condition detection, judge and switch control operation, avoid the use software processes and caused the long problem of switching time, guaranteed the rapid recovery of business when single-deck or trunk optical fiber are out of order effectively, and the PON card port of having realized any groove position is switched, and has increased configuration flexibility.In addition, the present invention switches in the Frame according to protection, and whether the bit position of expression Card Type is complete 0 or complete 1, can realize that the protection of single-deck level is switched.
Description of drawings
Fig. 1 is a kind of specific embodiment structural representation of 10G-EPON system provided by the invention any groove position PON card port quick protective switch device;
Fig. 2 is the schematic diagram under 10G-EPON system any groove position PON card port quick protective switch device normal operating conditions shown in Figure 1;
Fig. 3 is the schematic diagram under 10G-EPON system any groove position PON card port quick protective switch unit protection switch status shown in Figure 1;
Fig. 4 is the frame structure schematic diagram that Frame is switched in protection among the present invention;
Fig. 5 is the flow chart of 10G-EPON system provided by the invention any groove position PON card port fast protecting switching method.
Embodiment
Below in conjunction with accompanying drawing the present invention is made detailed explanation.
The invention provides a kind of 10G-EPON system any groove position PON card port quick protective switch device, as shown in Figure 1, the 10G-EPON system comprises OLT and some ONU.
OLT is provided with main control card; dispose some groups of PON service protections by network management platform to main control card and switch group; every group of PON service protection switched group and formed by two identical PON service cards; the PON service card can be EPON service card, GPON service card, 10GEPON service card or 10GGPON service card etc.; be inserted into respectively on any groove position on the OLT backboard, be used to realize different PON business.Be respectively equipped with CPLD (Complex Programmable Logic Device) CPLD on each PON service card, and have several PON mouths.
Sending configuration order by network management platform to the main control card of OLT is provided with two PON service cards that each group PON service protection is switched in the group respectively.This setting can be divided into the single-deck protection and switch and two kinds of set-up modes of Port Protection Switching.
Switch in the set-up mode in the single-deck protection: two PON service cards that every group of PON service protection switched in the group are configured to active and standby each other PON service card; and make wherein a PON service card as main PON card; all of the port on it is in running order; handle all PON related services; another piece PON service card is as being equipped with the PON service card, and the corresponding port on it is in stand-by state.That is, make any the PON mouth on the main PON service card become active and standby each other PON mouth with any the PON mouth that is equipped with on the PON service card.
In the Port Protection Switching set-up mode: every group of PON service protection switched arbitrary PON mouth on the PON service card in the group and the arbitrary PON mouth on another piece PON service card is configured to active and standby each other PON mouth.After configuration was finished, the optical module on the main PON mouth enabled, and makes this PON mouth in running order, handles all PON related services, closed the optical module that is equipped with on the PON mouth, made it be in stand-by state.Optical module on the active and standby PON mouth links to each other with two redundant each other trunk optical fibers respectively, and these two trunk optical fibers are connected respectively on the 2:N optical branching device, and some distribution optical fiber are drawn with each ONU from optical branching device and linked to each other.
During 10G-PON system operate as normal, on the down direction of OLT, have only the optical module on the main PON mouth to enable, the optical module that is equipped with on the PON mouth is in off state, thereby guarantees to have only on the descending light path one road optical information transmitting; The light signal that up direction, ONU send sends two optical modules respectively to through two trunk optical fibers, and CPLD is according to the configuration of main control card, select the optical module on the main PON mouth to enable, close the optical module that is equipped with on the PON mouth, thereby guarantee to have only on the up light path one road light signal transmitting, as shown in Figure 2.
The PON service protection is switched the CPLD backplane interconnect by OLT respectively on two PON service cards in the group, and CPLD switches Frame, resolves protection and switch the content of Frame and the function that control PON mouth optical module enables by operating state, generation and transmission protection that programming realizes detecting the main PON mouth on the PON service card.Specifically; the PON service protection is switched the operating state that CPLD on the every PON service card in the group detects all the PON mouths on the PON service card separately respectively in real time; and according to whether the LOS signal of each the main PON mouth on detected each PON service card; obtain whether to need this main PON mouth is carried out the judged result of PON Port Protection Switching; when the CPLD on PON service card wherein detects the LOS signal of the one or more main PON mouth on this PON service card; show and to carry out the PON Port Protection Switching; then close the optical module on this main PON mouth, send protection simultaneously and switch Frame and notify CPLD on another piece PON service card to enable to be equipped with accordingly optical module on the PON mouth.The frame structure that Frame is switched in protection as shown in Figure 4; bit position by the operating state of the corresponding PON mouth with some bit representations in the bit position of some bit representation Card Types is formed; the bit position of each expression PON mouth operating state respectively with this PON service card on the operating state of a main PON mouth want corresponding; when the LOS signal occurring on the CPLD on the PON service card detects some main PON mouth on this PON service card, the bit position that the corresponding PON mouth of the expression operating state in the Frame is switched in protection becomes 0 by 1.In the present embodiment; because the PON service card has 8 PON mouths; therefore protection is switched Frame and is made up of 16 bit positions, and wherein most-significant byte is represented Card Type, and least-significant byte is represented the operating state of each the PON mouth on this PON service card; non-0x00 of Card Type and 0xff; in order to avoid erroneous judgement, as, the Card Type of EPON service card is 0x48; the Card Type of GPON service card is 0x58, and the Card Type of 10GEPON service card is 0xE1.When a certain main PON mouth did not detect the LOS signal, corresponding bit position was " 1 ", represents that this main PON mouth is working properly; Otherwise when detecting this PON mouth and the LOS signal occurs, " 0 " is changed into by " 1 " in corresponding bit position, the expression dropout, and this PON mouth need be protected and switch.
Present embodiment is being that example is illustrated on the PON service card with 8 PON mouths, but, the present invention is not limited to only have the PON service card of 8 PON mouths, and for example, the present invention is equally applicable to have 4 PON mouths, 6 PON mouths, 10 PON mouths, 16 PON service cards such as PON mouth.When the PON service card has the PON mouth of other quantity, the corresponding bit of the operating state of each the PON mouth on the PON service card that represents is expanded accordingly.As for PON service card with 4 PON mouths, protect preceding 4 or back 4 operating states that are used for corresponding PON mouth in the least-significant byte of switching Frame, remaining bit fills with 0.For the PON service card more than 8 PON mouths, protection is switched Frame and be can be designed as 24 or 32.
Below in conjunction with Fig. 1, Fig. 2 and Fig. 3 the course of work of this device is described in detail.
Fig. 1 is a kind of specific embodiment structural representation of 10G-EPON system provided by the invention any groove position PON card port quick protective switch device; Fig. 2 is any schematic diagram under the device normal operating conditions of groove position PON mouth quick protective switch in the 10G-EPON system shown in this specific embodiment, and Fig. 3 is the schematic diagram under 10G-EPON system any groove position PON card port quick protective switch unit protection switch status shown in Figure 1.As shown in Figure 1, PON service card A and PON service card B are active and standby each other, and Card Type is 0x48.PON mouth A1 on the PON service card A (port numbers is 1) is as main PON mouth, and the optical module on this PON mouth A1 enables; PON mouth B2 on the PON service card B (port numbers is 1) is as being equipped with the PON mouth, and the optical module on this PON mouth B2 is closed.Main PON mouth A1 and be equipped with PON mouth B2 and be connected on the 2:N optical branching device by two redundant each other trunk optical fiber C1, C2 respectively, optical branching device is connected to each ONU by a plurality of distribution optical fiber, and data are transmitted by trunk optical fiber C1.
In conjunction with Fig. 2, in normal operation, the CPLD on the PON service card A detects the operating state of PON mouth A1 in real time again, promptly detects whether LOS signal of PON mouth A1, when not receiving the LOS signal, does not deal with; When receiving the LOS signal; illustrate that main PON mouth A1 light takes place loses; trunk optical fiber C1 breaks down; need carry out the protection of main PON mouth A1 switches; at this moment; CPLD on the PON service card A at first sends control signal, closes the optical module on the PON mouth A1, and the CPLD on PON service card B sends protection and switches Frame simultaneously.The most-significant byte that Frame is switched in protection is Card Type 0x48, and least-significant byte is 0x0xFE.After CPLD on the PON service card B receives that Frame is switched in protection fully; parse this protection and switch the content of Frame; the port numbers of the main PON mouth A1 that obtains the type 00x48 of PON service card A and break down; the Card Type 0x48 of PON service card A is compared with the Card Type 0x48 of self; the two is identical; so the port numbers 1 according to main PON mouth A1 finds the port numbers 1 that PON service card B2 goes up be equipped with PON mouth B2 corresponding with it; and send control signal; the optical module that is equipped with on the PON mouth B2 is enabled; so; trunk optical fiber C1; protection takes place by port A1 and B2 and switches in C2, and data are transmitted by trunk optical fiber C2.Under the protection switch status; if trunk optical fiber C1 recovers; the CPLD of the service card A at main PON mouth A1 place detects the LOS signal and becomes 1 by 0; so enable the optical module of PON mouth A1; simultaneously; the service card B that Frame is passed to PON mouth B2 place is switched in protection; service card B resolves the content that Frame is switched in this protection; and close the optical module of PON mouth B2 according to the content that Frame is switched in this protection; so; protection takes place and switches in trunk optical fiber C1, C2 once more, and data are transmitted by trunk optical fiber C1.Turn back to state as shown in Figure 2.
In like manner, the protection of trunk optical fiber C3 and C4 is switched the same.Trunk optical fiber C3 is connected to PON mouth A2 (slogan is 2) on the PON service card A by optical module, and trunk optical fiber C4 is connected to PON mouth B8 (port numbers is 8) on the PON service card B by optical module.CPLD on the PON service card B detects the operating state of main PON mouth B8 in real time, when not receiving the LOS signal, does not deal with; When receiving the LOS signal; illustrate that PON mouth B8 light takes place loses; trunk optical fiber C4 breaks down; need protect and switch, at this moment, the CPLD on the PON service card B at first sends control signal; close the optical module on the PON mouth B8; CPLD on PON service card A sends protection and switches Frame simultaneously, and the most-significant byte that Frame is switched in protection is Card Type 00x48, and least-significant byte is 0x0x7F.(explain: LOS8 is in highest order; LOS0 is at lowest order; when LOS8 is " 0 "; other ports just often; the least-significant byte of Frame should be 0x7F.) after CPLD on the PON service card A receives that Frame is switched in protection; parse this protection and switch the content of Frame; the port numbers 8 of the PON mouth B8 that obtains the type 0x48 of PON service card B and break down; the Card Type 0x48 of PON service card B is compared with the Card Type 0x48 of self; the two is identical; so the port numbers 8 according to main PON mouth B8 finds the port numbers 2 that PON service card A goes up be equipped with PON mouth A2 corresponding with it; and send control signal, the optical module on the PON mouth A2 is enabled, so; trunk optical fiber C3; protection takes place and switches in C4, and data are transmitted by trunk optical fiber C3.The recovery that protection is switched is referring to said method.
Fig. 2, specific embodiment shown in Figure 3 only switch group with one group of protection and a PON mouth is that example is illustrated; but; the present invention can be provided with many group PON service protections and switch group; a plurality of PON mouths can be arranged as main PON mouth on the PON service card A; at this moment, a plurality of corresponding PON mouths are arranged as being equipped with the PON mouth on the PON service card B.According to detected main PON mouth whether the LOS signal is arranged, which main PON mouth obtains has to protect conversion on the PON business board, according to the method described above, closes the optical module of main PON mouth successively, and opens the optical module of PON mouth fully successively.According to above description, a plurality of PON mouths on the PON service card may be a part of as main PON mouth, and another part is as being equipped with the PON mouth, and correspondingly, also a possibility part is as main PON mouth for a plurality of PON mouths on the PON service card, and another part conduct is equipped with the PON mouth.When protection taking place switching, the least-significant byte that Frame is switched in protection can be represented the operating state of a plurality of main PON mouths, and when occurring the LOS signal simultaneously as PON mouth A1, A3 and A8, the least-significant byte that Frame is switched in protection is 7A.
The present invention can also realize that the protection of single-deck switches, if promptly the single-deck at main port place is because a variety of causes (power supply, clock etc.) cisco unity malfunction, and need be with the switching services of single-deck all of the port to the corresponding port of protecting the group membership.When main port place single-deck lost efficacy; take the form of CPLD and pass to Card Type and the LOS signal all unusual (may be complete " 1 " or complete " 0 ") of protecting the group membership; at this moment; it is 0x00 or 0xFF that the single-deck at standby port place can detect Card Type; in this case; for guaranteeing professional rapid recovery, CPLD enables the optical module of standby port, finishes the operation of switching.Simultaneously, produce and interrupt, notify the CPU of this service card,, revise relevant parameter by CPU notice main control card.The specific implementation process is as follows:
To switch the bit position of the Card Type of expression PON service card in the Frame be complete 0 or complete 1 if the PON service protection is switched protection that the CPLD on the PON service card in the group receives; then close this PON service protection and switch optical module on all PON mouths on another piece PON service card in the group, and the optical module on all the PON mouths on this PON service card is enabled.
In sum, the single-deck protection can be thought the special state of port protection, and promptly all of the port of PON card is main with mouth or standby mouth.The protection of single-deck level has two kinds of implementations: the one, when under main control card, disposing, select the protection of single-deck level; The 2nd, when under main control card, disposing, select the port level protection to switch, when detecting Card Type and be 0x00 and 0xFF, business all is switched to the corresponding port that group membership's card is switched in protection.
The present invention also provides in a kind of 10G-EPON system method of groove position PON port quick protective switch arbitrarily, and its flow process may further comprise the steps as shown in Figure 5:
Some groups of PON service protections are set on OLT switch group, every group of described PON service protection switched group and comprised two identical PON service cards;
In Port Protection Switching is provided with, every group of described PON service protection switched arbitrary PON mouth on the PON service card in the group and the arbitrary PON mouth on another piece PON service card is configured to active and standby each other PON mouth, make some described main PON mouths in running order then, make the corresponding described PON mouth that is equipped be in stand-by state;
Switch in single-deck protection and to be provided with, two PON service cards every group of described PON service protection being switched group are configured to active and standby each other PON service card respectively, all of the port on the wherein said main PON service card is main PON mouth, described each port that is equipped with on the PON service card is respectively the fully PON mouth corresponding with described main PON mouth, make whole described main PON mouths in running order then, make the corresponding described PON mouth that is equipped be in stand-by state;
Described PON service protection is switched the operating state that CPLD on two PON service cards in the group detects all the main PON mouths on the PON service card separately respectively in real time, and sends protection simultaneously and switch Frame and notify the other side; When the CPLD on PON service card wherein detects the LOS signal of the one or more main PON mouth on this PON service card; close the optical module on this main PON mouth, and switch Frame by protection and notify CPLD on another piece PON service card to enable to be equipped with accordingly optical module on the PON mouth.
In this method, frame structure and protection reversed process that Frame is switched in protection describe in detail in the device of groove position PON port quick protective switch arbitrarily in the 10G-EPON system in front, do not repeat them here.
The present invention also provides and has comprised in the above-mentioned 10G-EPON system 10G-EPON system of groove position PON port quick protective switch device arbitrarily.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (9)
1.10G-EPON the method for any groove position PON port quick protective switch is characterized in that in the system,
Some groups of PON service protections are set on OLT switch group, every group of described PON service protection switched group and comprised two identical PON service cards;
In Port Protection Switching is provided with, every group of described PON service protection switched arbitrary PON mouth on the PON service card in the group and the arbitrary PON mouth on another piece PON service card is configured to active and standby each other PON mouth, make some described main PON mouths in running order then, make the corresponding described PON mouth that is equipped be in stand-by state;
Switch in single-deck protection and to be provided with, two PON service cards every group of described PON service protection being switched group are configured to active and standby each other PON service card respectively, all of the port on the wherein said main PON service card is main PON mouth, described each port that is equipped with on the PON service card is respectively the fully PON mouth corresponding with described main PON mouth, make whole described main PON mouths in running order then, make the corresponding described PON mouth that is equipped be in stand-by state;
Described PON service protection is switched the operating state that CPLD on two PON service cards in the group detects all the main PON mouths on the PON service card separately respectively in real time, and sends protection simultaneously and switch Frame and notify the other side; When the CPLD on PON service card wherein detects the LOS signal of the one or more main PON mouth on this PON service card; close the optical module on this main PON mouth, and switch Frame by protection and notify CPLD on another piece PON service card to enable to be equipped with accordingly optical module on the PON mouth.
2. the method for groove position PON port quick protective switch arbitrarily in the 10G-EPON as claimed in claim 1 system; it is characterized in that; described protection is switched Frame and is made up of the bit position of the Card Type of some bit representation PON service cards and the bit position of some bit representation PON mouth operating states; the bit position of each described expression PON mouth operating state is corresponding with the operating state of a main PON mouth on this PON service card respectively; when protection is switched CPLD on the arbitrary PON service card in the group and is detected the LOS signal of the arbitrary PON mouth on this service card in real time; close the optical module on this PON mouth; generate simultaneously and comprise the Card Type of this PON service card and to represent that the protection of all the PON mouth operating states on this PON service card switches Frame; and be sent to this PON service protection and switch CPLD on another piece PON service card in the group; when detecting the LOS signal, the corresponding bit position that the main PON mouth los state on this PON service card of expression in the Frame is switched in described protection becomes 0 by 1.
3. the method for groove position PON port quick protective switch arbitrarily in the 10G-EPON as claimed in claim 2 system; it is characterized in that; after described PON service protection is switched CPLD on the PON service card in the group and is received that Frame is switched in protection; resolve to obtain to send the Card Type of the PON service card that protection switches Frame and all bit positions and be 0 the pairing main PON slogan in bit position; if it is identical with the Card Type of himself to resolve the type of the PON service card that obtains; then enable to be equipped with accordingly the optical module on the PON mouth, switch Frame otherwise ignore this protection.
4. the method for groove position PON port quick protective switch arbitrarily in the 10G-EPON as claimed in claim 3 system; it is characterized in that; to switch the bit position of the Card Type of expression PON service card in the Frame be complete 0 or complete 1 if the PON service protection is switched protection that the CPLD on the PON service card in the group receives; then close this PON service protection and switch optical module on all PON mouths on another piece PON service card in the group, and the optical module on all the PON mouths on this PON service card is enabled.
5.10G-EPON any groove position PON port quick protective switch device in the system, described 10G-EPON system comprises OLT, described OLT is provided with main control card, it is characterized in that, also be provided with some groups of PON service protections on the described OLT and switch group, every group of described PON service protection switched group and comprised two identical PON service cards, have several PON mouths respectively on the every described PON service card, and any the PON mouth on any the PON mouth on PON service card of described main control card and another piece PON service card is set to main each other, be equipped with the PON mouth, described master, the optical module that is equipped with on the PON mouth links to each other with two redundant each other trunk optical fibers respectively; Every group of described PON service protection switched on the every PON service card in the group and is respectively equipped with CPLD and passes through backplane interconnect; described CPLD detects the operating state of all the main PON mouths on the PON service card separately respectively in real time; and according to whether the LOS signal of each the main PON mouth on detected each PON service card; obtain whether to need this main PON mouth is carried out the judged result of PON Port Protection Switching; when judged result shows need carry out the PON Port Protection Switching time; close the optical module on this main PON mouth, send protection simultaneously and switch Frame and notify CPLD on another piece PON service card to enable to be equipped with accordingly optical module on the PON mouth.
6. groove position PON port quick protective switch device arbitrarily in the 10G-EPON as claimed in claim 5 system; it is characterized in that; described protection is switched Frame and is made up of the bit position of the Card Type of some bit representation PON service cards and the bit position of some bit representation PON mouth operating states; the bit position of each described expression PON mouth operating state respectively with this PON service card on the operating state of a main PON mouth want corresponding; when protection is switched CPLD on the arbitrary PON service card in the group and is detected the LOS signal of arbitrary PON mouth on this service card in real time; described CPLD closes the optical module on this PON mouth; generate simultaneously and comprise the Card Type of this PON service card and to represent that the protection of all the PON mouth operating states on this PON service card switches Frame; and be sent to this PON service protection and switch CPLD on another piece PON service card in the group; when detecting the LOS signal, the corresponding bit position that described CPLD switches the main PON mouth operating state on this PON service card of expression in the Frame with described protection becomes 0 by 1.
7. groove position PON port quick protective switch device arbitrarily in the 10G-EPON as claimed in claim 6 system; it is characterized in that; after described PON service protection is switched CPLD on the PON service card in the group and is received that Frame is switched in protection; resolve to obtain to send the Card Type of the PON service card that protection switches Frame and all bit positions and be the main PON slogan on pairing this PON service card in bit position of 0; if it is identical with the Card Type of himself to resolve the Card Type of the PON service card that obtains; then enable to be equipped with accordingly the optical module on the PON mouth, switch Frame otherwise ignore this protection.
8. groove position PON port quick protective switch device arbitrarily in the 10G-EPON as claimed in claim 7 system; it is characterized in that; the PON service protection is switched protection that the CPLD on the PON service card in the group receives, and to switch the bit position of the Card Type of expression PON service card in the Frame be complete 0 or complete 1; then close this PON service protection and switch optical module on all PON mouths on another piece PON service card in the group, and the optical module on all the PON mouths on this PON service card is enabled.
9.10G-EPON system is characterized in that comprising as groove position PON port quick protective switch device arbitrarily in each described 10G-EPON system of claim 5 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105925299A CN102064885A (en) | 2010-12-17 | 2010-12-17 | 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105925299A CN102064885A (en) | 2010-12-17 | 2010-12-17 | 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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| CN102064885A true CN102064885A (en) | 2011-05-18 |
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| CN2010105925299A Pending CN102064885A (en) | 2010-12-17 | 2010-12-17 | 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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Application publication date: 20110518 |