CN104539438B - A kind of system and method for being used in PON system realize multicast service layering - Google Patents
A kind of system and method for being used in PON system realize multicast service layering Download PDFInfo
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Abstract
A kind of system and method for being used in PON system realize multicast service layering, the technical field of multicast being related on broadband access equipment, the system includes adaptation module, receive the data link layer multicast protocol message from chip, therefrom parse network layer multicast protocol massages and relevant data link layer parameter, and the data link layer parameter is changed according to being locally configured, finally send it to protocol stack module；Protocol stack module, receives network layer multicast protocol massages, safeguards network layer multicast group forwarding table and data Link-Layer Multicast group forwarding table；Maintain multicast protocol operation, and maintenance agreement stack mould state machine in the block；Management control module, receives and manages management control command input by user, resolve command parameter and exectorial function；The configuration of initializtion protocol stack module and relevant parameter.Exploitation and maintenance work amoun The present invention reduces software, reduce software development cycle and cost.
Description
Technical field
The present invention relates to the technical field of multicast on broadband access equipment, is specifically a kind of be used in PON system in fact
The system and method for existing multicast service layering.
Background technology
It is reliable that PON (Passive optical network, passive optical-fiber network) can provide high bandwidth for terminal user
Data, voice and video business, at present highest bandwidth reach 10G upstream and downstream bandwidth.With the multimedia industry such as IPTV, HDTV
The rapid growth of popularization and the data service consumption of business, the preferred solution that PON is accessed as cable broadband, the high bandwidth of carrying disappear
The multimedia service of consumption is inherently more and more, and multicast is inherently played the part of increasingly as the key technology of bearing multimedia business
Important role.
PON system is in OSI (Open System Interconnect, Open System Interconnection) network hierarchy model
Data link layer, belongs to two layers of access system, multicast IGMP (Internet Group Management Protocol,
Internet igmpinternets), MLD (Multicast Listener Discover, multicast listener discovery protocol) agreement be place
In network layer, belong to three layer protocols.PON system is needed in data link layer network, according to the multicast group of network layer protocol
Location table clause, establishes data link layer multicast group forwarding table, and according to the interaction of multicast protocol message, safeguards (addition, delete)
Data link layer multicast group forwarding table, avoids to all of the port broadcast multicast data, achievees the purpose that to reduce bandwidth consumption.
In existing PON system, device category is very much, is generally divided into OLT (the Optical Line of local side
Terminal, optical line terminal) equipment and user side ONU (ONU Optical Network Unit, optical node) equipment, its
In, local side apparatus is different according to the PON agreements, the disposal ability of chip used, and there are EPON (Ethernet Passive
Optical Network, Ethernet passive optical network), GPON (Gigabit-Capable PON, the PON of gigabit capacity),
10GEPON (10Gigabit/s Ethernet Passive Optical Network, 10 gigabit Ethernet passive optical networks
Network), etc. equipment form.The difference of scene is accessed according to user, in the ONU of user side, and is divided into FTTC (Fiber-To-The-
Curb, Fiber To The Curb), FTTB (Fiber To The Building, fiber to the floor road), FTTH (Fiber To The
Home, fiber to the home) etc. several big classifications etc..
During each PON system is developed, to realize the carrying of multicast service, each system is required for exploitation at least
One multicast module, in the case of the reuse in view of code, it is also desirable to according to actual system to multicast module into
The bigger modification of row, it is necessary to project puts into substantial amounts of human and material resources and financial resources in multicast module, the corresponding R＆D cycle also compared with
It is long.
The content of the invention
Defect present in technology is realized to solve existing multicast service, and the present invention provides a kind of for real in PON system
The system and method for existing multicast service layering, the present invention can be directed to different PON system equipment, rapid deployment multicast service,
Reduce exploitation and the maintenance work amoun of software, reduce software development cycle and cost.
To achieve the above objectives, the present invention adopts the technical scheme that：One kind is used in PON system realize multicast service point
The system of layer, including management control module, protocol stack module, adaptation module；Adaptation module, receives the data link from chip
Layer multicast protocol message, therefrom parses network layer multicast protocol massages and relevant data link layer parameter, and according to local
The data link layer parameter is changed in configuration, finally by network layer multicast protocol massages and transformed data link layer
Parameter is sent to protocol stack module；There is provided for protocol stack module send data link layer multicast protocol message functional function interface,
Addition/deletion data link layer multicast group forwarding table entry functionality function interface；Protocol stack module, receives network layer multicast agreement
Message, safeguards network layer multicast group forwarding table and data Link-Layer Multicast group forwarding table；Multicast protocol operation is maintained, and safeguards association
Discuss stack mould state machine in the block；Management control module, receives and manages management control command input by user, resolve command parameter is simultaneously
Exectorial function；The configuration of initializtion protocol stack module and relevant parameter.
Based on the above technical solutions, controllable multicast module is further included, for receiving and processing multicast group user's
Request is added/left, realizes the control to multicast group user；The relevant control statistical information of multicast group user is provided.
The method for being used in PON system realize multicast service layering based on said system, including：Adaptation module passes through association
The login mechanism that stack module provides is discussed, registration sends data link layer multicast protocol message functional function interface, addition/deletion number
According to Link-Layer Multicast group forwarding table entry functionality function interface；The configuration of management control module initializtion protocol stack module and correlation
Parameter, according to the order configuration protocol stack module of management user, resolve command parameter simultaneously performs order；Adaptation module is received and come from
The data link layer multicast protocol message of chip, therefrom parses network layer multicast protocol massages and relevant data link layer ginseng
Number, and the data link layer parameter is changed according to being locally configured, finally by network layer multicast protocol massages and conversion
Data link layer parameter afterwards is sent to protocol stack module；After protocol stack module receives network layer multicast protocol massages, according to
The type and data of network layer multicast protocol massages, and Current protocol stack mould state machine in the block, safeguard that network layer multicast group turns
Deliver entry and data Link-Layer Multicast group forwarding table clause.
Based on the above technical solutions, the specific works step for controlling management module is：Management module is controlled to assist
The parameter initialization of view stack module operation needs is simultaneously configured to protocol stack module；Management module is controlled to receive the life of management user
Order, parses command parameter；Perform and order corresponding function, and return command implementing result.
Based on the above technical solutions, adaptation module further includes following functions：Will be incoming according to the configuration of equipment
Data conversion is encapsulated into be sent into the data in data link layer multicast protocol message together with network layer multicast protocol massages
Data link layer multicast protocol message in, the data link layer for then calling chip drives to provide is given out a contract for a project function, sends data
Link-Layer Multicast protocol massages；Network layer multicast group forwarding table is converted into data link layer multicast group according to the configuration of equipment to turn
Deliver, the addition/deletion data link layer multicast group forwarding table entry functionality provided using chip drives, addition/deletion chip
On data link layer multicast group forwarding table.
Based on the above technical solutions, the function of protocol stack module includes：When protocol stack module is in proxy mode
When, protocol stack module replys the query message that upstream equipment is sent, and is configured according to protocol parameter and periodically send general polling report
Text, processing is received to add/leaves multicast protocol message；When protocol stack module, which is in, intercepts pattern, forward what is received to look into
Ask multicast protocol message and add/leave multicast protocol message.
Based on the above technical solutions, the function of protocol stack module further includes：When protocol stack module receives network layer
When multicast joins message and there is currently no multicast group forwarding table clause, increase a network layer multicast group forwarding table clause,
And interpolation data Link-Layer Multicast group forwards table clause on chip；When protocol stack module is operated under proxy mode, agreement
Stack module sends network layer multicast group and joins message to upstream equipment；Message is left when protocol stack module receives network layer multicast group
When, in network layer multicast group forwarding table, the corresponding forwarding table clause of the multicast group is searched, sends group-specific query message, and
Start timer, if before the timeout, not receiving the reply message of multicast group user, then deleted in network layer multicast group forwarding table
Except the entry, and corresponding data link layer multicast group forwarding entry is deleted from chip；If before the timeout, receive user's transmission
Reply message, not to the multicast forwarding list item carry out delete operation；Report is left when protocol stack module receives network layer multicast group
Wen Shi, if multicast group user is last user of the multicast group, in the case where multicast protocol is operated in proxy mode, agreement
Stack module upstream device sends and leaves message.
Based on the above technical solutions, controllable multicast module is further included, controllable multicast module, which receives, comes from multicast
The addition request of group user, according to the multicast group user right of configuration, and the historical viewings for combining multicast group user record, and judge
The validity of multicast user's request, in the case of addition request is effective, it is allowed to which adaptation module adds network layer multicast group
Protocol massages are sent to protocol stack module；Controllable multicast module sends deletion multicast group forwarding table clause to protocol stack module please
Ask, control preview user leaves in preview time after.
Based on the above technical solutions, controllable module is used for multicast group user right, the control parameter for preserving configuration；
That safeguards user browses history, current state, and browses day according to the history that browses of user, counting statistics information, generation user
Will；History and configuration authority are browsed according to user, judge the access right of active user.
Based on the above technical solutions, the access right of the multicast group user include preview rights, forbid authority,
Normal authority, the specific works step of controllable module are：Receive the multicast group that multicast group user sends and add request, check controllable
The multicast group user right that module preserves；Multicast group user is preview rights, it is allowed to interpolation data Link-Layer Multicast group forwarding table
Entry, network layer multicast group forwarding table clause, and start timer, received after timer expiry or before timer expiry
To the request of leaving of multicast group user, control protocol stack module deletes data link layer multicast group forwarding table clause, network layer
Multicast group forwards table clause；Multicast group user does not handle addition request to forbid authority；Multicast group user is normal authority,
Network layer multicast group forwarding table clause, data link layer multicast group forwarding table clause are added, until receiving multicast group user's
Request is left, the corresponding data link layer multicast group forwarding table clause of control protocol stack deletion the user, network layer multicast group turn
Deliver entry.
The beneficial effects of the present invention are：
1st, the present invention only makes adaptation module a small amount of modification according to actual equipment form and the hardware plan of use, i.e., suitable
Only needed with module according to actual equipment form, the equipment that modification is initialised to protocol stack module is given out a contract for a project port numbers, MAC Address
Etc. parameter, according to actual chips scheme, log-on data Link-Layer Multicast protocol massages functional function interface, addition/deletion data
Link-Layer Multicast group forwarding table entry functionality function interface receives data link layer multicast protocol message to protocol stack module, and change
Mechanism.It can be directed to different PON system equipment, rapid deployment multicast service, reduces exploitation and the maintenance work amoun of software,
Reduce software development cycle and cost.
2nd, the present invention is according to the needs of actual deployment multicast service, can by when providing software kit, choosing whether to include
Multicast module is controlled, or software kit include controllable multicast module, the mode such as selection unlatching/closing controllable multicast function during use,
Reach optional support controllable multicast function, meet different application demands.
Brief description of the drawings
It is used in PON system the system schematic for realizing multicast service layering in Fig. 1 embodiment of the present invention；
It is used in PON system the interactive relation for realizing each module of system of multicast service layering in Fig. 2 embodiment of the present invention
Schematic diagram；
The specific works step schematic diagram of management module is controlled in Fig. 3 embodiment of the present invention；
The specific works step schematic diagram of controllable module in Fig. 4 embodiment of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments.
It is shown in Figure 1, a kind of system for being used in PON system realize multicast service layering, including management control module,
Protocol stack module, adaptation module, controllable multicast module；Management control module, receives and manages management control command input by user,
Resolve command parameter and the exectorial function in equipment, including management user pass through graphic network manager, WEB administration interfaces, life
The multicast service related command that the management terminals such as order row issue；The configuration of initializtion protocol stack module and relevant parameter；Protocol stack
Module, receives network layer multicast protocol massages, safeguards network layer multicast group forwarding table and the data link layer in OSI hierarchical modes
Multicast group forwarding table；Maintain multicast protocol operation, and maintenance agreement stack mould state machine in the block；Adaptation module, reception come from core
The data link layer multicast protocol message of piece, in the data link layer multicast protocol message comprising network layer multicast protocol massages and
Data link layer parameter, adaptation module therefrom parse network layer multicast protocol massages and relevant data link layer parameter, and
The data link layer parameter is changed according to being locally configured, finally by network layer multicast protocol massages and transformed number
Sent according to link layer parameter to protocol stack module, wherein, transformed data link layer parameter individually uses letter as parameter
The mode that number calls is transferred to protocol stack module or is sent by the way of intertask communication to protocol stack module, by protocol stack
Module is used to safeguard data link layer and network layer multicast group forwarding table；There is provided for protocol stack module and send data link layer multicast
Protocol massages functional function interface, addition/deletion data link layer multicast group forwarding table entry functionality function interface；The chip
For the asic chip for receiving, sending and handling data link layer multicast protocol message.Controllable multicast module, it is used to receive
The addition of multicast group user/leave request, and the authority and historical viewings record of multicast group user are combined, judge that user currently please
The validity asked, realizes the control to multicast group user；The relevant control statistical information of multicast group user is provided.It is controllable opening
During multicast functionality, according to multicast group user right and current state (including history usage record), control multicast group user's adds
Enter/leave.Controllable multicast module can be according to actual use increase in demand/cutting.
It is shown in Figure 2, the method for being used in PON system realize multicast service layering based on said system, including：
The login mechanism that step S1. adaptation modules are provided by protocol stack module, registration send data link layer multicast association
Discuss message functional function interface, addition/deletion data link layer multicast group forwarding table entry functionality function interface.Management control mould
The configuration of initialization block protocol stack module and relevant parameter, according to the order configuration protocol stack module and mode-controller of management user
Block, resolve command parameter simultaneously perform order.
Step S2. adaptation modules receive the data link layer multicast protocol message from chip, therefrom parse network layer
Multicast protocol message and relevant data link layer parameter, and the data link layer parameter is turned according to being locally configured
Change, if there is no controllable multicast module, then send network layer multicast protocol massages and transformed data link layer parameter
To protocol stack module；If there is controllable multicast module, then controllable multicast module receive come from the addition of multicast group user please
Ask, according to the multicast group user right of configuration, and the historical viewings for combining multicast group user record, and judge that multicast group user asks
Validity, in the case of addition request is effective, it is allowed to which network layer multicast group is added protocol massages and sent by adaptation module
To protocol stack module；Controllable multicast module is sent to protocol stack module deletes multicast group forwarding table entry request, and control preview is used
Left in preview time after at family.
After step S3. protocol stack modules receive network layer multicast protocol massages, according to network layer multicast protocol massages
Type and data, and Current protocol stack mould state machine in the block, safeguard network layer multicast group forwarding table clause and data link layer
Multicast group forwards table clause.
Shown in Figure 3, the specific works step for controlling management module is：
The parameter initialization that step S301. controls management module needs when protocol stack module is run, and it is configured to agreement
Stack module.
Step S302. control management modules receive the order of management user, parse command parameter.
Step S303. judges whether the correlation function for performing the order needs upstream device to coordinate and realize, if it is not, redirecting
To step S304；If jump to step S305.
Step S304., which is performed, orders corresponding function, and return command implementing result.
Step S305. controls management module sends a command to upstream device, and waits it to return the result.
Adaptation module includes following functions：
There is provided data link layer to give out a contract for a project mechanism, according to the configuration of equipment by incoming data conversion into data link layer multicast
Data in protocol massages, are encapsulated into data link layer multicast protocol message to be sent together with network layer multicast protocol massages
In, the data link layer for then calling chip drives to provide is given out a contract for a project functional function interface, sends data link layer multicast protocol report
Text.
Addition/deletion data link layer multicast group forwarding table mechanism is provided, according to the configuration of equipment by network layer multicast group
Forwarding table is converted into data link layer multicast group forwarding table, the addition/deletion data link layer multicast provided using chip drives
Group forwarding table entry functionality function interface, the data link layer multicast group forwarding table on addition/deletion chip.
The packet receiving mechanism for receiving the data link layer multicast protocol message for coming from chip is provided, reception comes from chip
Data link layer multicast protocol message, and network layer multicast protocol massages and relevant data link layer parameter are therefrom extracted,
And the data link layer parameter is changed according to being locally configured, then by network layer multicast protocol massages and transformed
Data link layer parameter is sent to protocol stack module.
The operating mode of protocol stack module includes proxy mode and intercepts pattern, and wherein proxy mode includes：1. act on behalf of mould
The host to work under formula, serves as " route role " in the second line of a couplet mouth of connection, is served as " host role " in the upper united mouth of connection.2. dimension
Protect multicast member forwarding relation table.3. when having newcomer's addition, or query message being received in upper united mouth, to upper united mouth
Send multicast member and add protocol massages, when multicast member changes, send multicast member to upper united mouth and leave
Message.4. send query message, including general polling message and group-specific query message to second line of a couplet mouth.
Intercept pattern and tieed up by intercepting the different types of IGMP multicast protocols message from upper united mouth and second line of a couplet mouth, dynamic
Protect multicast group membership's table of equipment.The pattern of intercepting includes：1. membership report's message of multicast group user is forwarded to
Upper united mouth.2. the query message for coming from upper united mouth is forwarded to second line of a couplet mouth.
The function of protocol stack module includes：
When protocol stack module receive network layer multicast join message and there is currently no the multicast group forwarding table clause when, increase
Add a network layer multicast group forwarding table clause, and interpolation data Link-Layer Multicast group forwards table clause on chip；Work as agreement
When stack module is operated under proxy mode, protocol stack module sends network layer multicast group and joins message to upstream equipment.
When protocol stack module, which receives network layer multicast group, leaves message, in network layer multicast group forwarding table, searching should
The corresponding forwarding table clause of multicast group, if finding corresponding multicast group forwarding table clause, sends special according to protocol parameter
Determine group polling message, and start timer, if before the timeout, not receiving the reply message of multicast group user, then in network layer
The entry is deleted in multicast group forwarding table, and corresponding data link layer multicast group forwarding entry is deleted from chip；If super
Shi Qian, receives the reply message of user's transmission, does not carry out delete operation to the multicast forwarding list item；If the multicast is not found
The corresponding forwarding table clause of group, then do not handle this and leave message.
When protocol stack module, which receives network layer multicast group, leaves message, if multicast group user be the multicast group most
The latter user, in the case where multicast protocol is operated in proxy mode, protocol stack module upstream device sends and leaves message.
When protocol stack module is in proxy mode, protocol stack module replys the query message that upstream equipment is sent, and root
Configured according to protocol parameter and periodically send general polling message.
When protocol stack module, which is in, intercepts pattern, the query message received and addition/leave message are forwarded.
Configuration, control and retaking of a year or grade interface are provided for management control module.
Receive the function registration of adaptation module.
Controllable multicast module receives the addition request for coming from multicast group user, according to the multicast group user right of configuration,
It is effective in addition request and the historical viewings for combining multicast group user record, and judge the validity of multicast group user request
In the case of, it is allowed to adaptation module sends network layer multicast group addition protocol massages to protocol stack module；Controllable multicast module to
Protocol stack module, which is sent, deletes multicast group forwarding table entry request, and control preview user leaves in preview time after.
Controllable module is used for multicast group user right, the control parameter for preserving configuration；That safeguards user browses history, current
State, and according to the history that browses of user, counting statistics information, generates daily record；History and configuration authority are browsed according to user, sentenced
The access right of disconnected active user.
The access right of the multicast group user includes preview rights, forbids authority, normal authority, shown in Figure 4, can
Control module specific works step be：
Step S401. receives the multicast group that multicast group user sends and adds request,
Step S402. judges the multicast group user right that controllable module preserves, if multicast group user is preview rights, redirects
To step S403；If multicast group user jumps to step S405 to forbid authority；If multicast group user is normal authority, redirect
To step S406.
Step S403. allows interpolation data Link-Layer Multicast group to forward table clause, network layer multicast group to forward table clause, and
Start timer, jump to step S404.
What step S404. received multicast group user after timer expiry or before timer expiry leaves request,
Request protocol stack module deletes data link layer multicast group forwarding table clause, network layer multicast group forwarding table clause.
Step S405. does not handle addition request.
Step S406. addition network layer multicast group forwardings table clause, data link layer multicast group forwarding table clause, jump to
Step S407.
What step S407. received multicast group user leaves request, delete data link layer multicast group forwarding table clause,
Network layer multicast group forwards table clause.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
On the premise of the principle of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as the protection of the present invention
Within the scope of.The content not being described in detail in this specification belongs to the prior art known to professional and technical personnel in the field.
Claims (10)
- A kind of 1. system for being used in PON system realize multicast service layering, it is characterised in that：Including management control module, association Discuss stack module, adaptation module；Adaptation module, receives the data link layer multicast protocol message from chip, the data link layer multicast protocol message In include network layer multicast protocol massages and data link layer parameter, therefrom parse network layer multicast protocol massages and relevant Data link layer parameter, and the data link layer parameter is changed according to being locally configured, finally network layer multicast is assisted View message and transformed data link layer parameter are sent to protocol stack module；There is provided for protocol stack module and send data link layer Multicast protocol message functional function interface, addition/deletion data link layer multicast group forwarding table entry functionality function interface；Protocol stack module, receives network layer multicast protocol massages, safeguards network layer multicast group forwarding table and data Link-Layer Multicast Group forwarding table；Maintain multicast protocol operation, and maintenance agreement stack mould state machine in the block；Management control module, receives and manages management control command input by user, resolve command parameter and exectorial function； The configuration of initializtion protocol stack module and relevant parameter.
- 2. it is used in PON system the system for realizing multicast service layering as claimed in claim 1, it is characterised in that：Further include Controllable multicast module, for receiving and processing the addition of multicast group user/leave request, realizes the control to multicast group user； The addition of control multicast group user/leave, so as to provide the relevant control statistical information of multicast group user.
- 3. the method for being used in PON system realize multicast service layering based on system described in claim 1, it is characterised in that Including：The login mechanism that adaptation module is provided by protocol stack module, registration send data link layer multicast protocol message function letter Number interface, addition/deletion data link layer multicast group forwarding table entry functionality function interface；Management control module initializtion protocol The configuration of stack module and relevant parameter, according to the order configuration protocol stack module of management user, resolve command parameter simultaneously performs life Order；Adaptation module receives the data link layer multicast protocol message from chip, therefrom parses network layer multicast protocol massages With relevant data link layer parameter, and the data link layer parameter is changed according to being locally configured, finally by network Layer multicast protocol message and transformed data link layer parameter are sent to protocol stack module；After protocol stack module receives network layer multicast protocol massages, according to the type and data of network layer multicast protocol massages, And Current protocol stack mould state machine in the block, safeguard network layer multicast group forwarding table clause and data Link-Layer Multicast group forwarding table Entry.
- 4. the method for being used in PON system realize multicast service layering as claimed in claim 3, it is characterised in that control pipe Reason module specific works step be：Control management module is by the parameter initialization of protocol stack module operation needs and is configured to protocol stack module；Control management module to receive the order of management user, parse command parameter；Perform and order corresponding function, and return command implementing result.
- 5. the method for being used in PON system realize multicast service layering as claimed in claim 3, it is characterised in that adaptation mould Block further includes following functions：According to the configuration of equipment by incoming data conversion into the data in data link layer multicast protocol message, with network layer group Broadcast protocol massages to be encapsulated into together in data link layer multicast protocol message to be sent, the number for then calling chip drives to provide Give out a contract for a project function according to link layer, send data link layer multicast protocol message；Network layer multicast group forwarding table is converted into by data link layer multicast group forwarding table according to the configuration of equipment, is driven using chip Dynamic addition/deletion data link layer multicast group forwarding table the entry functionality provided, the data link layer group on addition/deletion chip Broadcast a group forwarding table.
- 6. the method for being used in PON system realize multicast service layering as claimed in claim 3, it is characterised in that protocol stack The function of module includes：When protocol stack module is in proxy mode, protocol stack module replys the query message that upstream equipment is sent, and according to association View parameter configuration periodically sends general polling message, and processing is received to add/leave multicast protocol message；When protocol stack module, which is in, intercepts pattern, forwards the inquiry multicast protocol message received and add/leave multicast association Discuss message.
- 7. the method for being used in PON system realize multicast service layering as claimed in claim 6, it is characterised in that protocol stack The function of module further includes：When protocol stack module receive network layer multicast join message and there is currently no the multicast group forwarding table clause when, increase by one Bar network layer multicast group forwards table clause, and interpolation data Link-Layer Multicast group forwards table clause on chip；When protocol stack mould When block is operated under proxy mode, protocol stack module sends network layer multicast group and joins message to upstream equipment；When protocol stack module, which receives network layer multicast group, leaves message, in network layer multicast group forwarding table, the multicast is searched The corresponding forwarding table clause of group, sends group-specific query message, and starts timer, if before the timeout, not receiving the multicast group The reply message of user, then delete the entry in network layer multicast group forwarding table, and corresponding data-link is deleted from chip Road floor multicast group forwarding entry；If before the timeout, receiving the reply message of user's transmission, which is not deleted Division operation；When protocol stack module, which receives network layer multicast group, leaves message, if multicast group user is last of the multicast group A user, in the case where multicast protocol is operated in proxy mode, protocol stack module upstream device sends and leaves message.
- 8. the method for being used in PON system realize multicast service layering as claimed in claim 3, it is characterised in that：Further include Controllable multicast module, controllable multicast module receives the addition request for coming from multicast group user, according to the multicast group user of configuration Authority, and the historical viewings for combining multicast group user record, and judge the validity of multicast user's request, it is effective in addition request In the case of, it is allowed to adaptation module sends network layer multicast group addition protocol massages to protocol stack module；Controllable multicast module Sent to protocol stack module and delete multicast group forwarding table entry request, control preview user leaves in preview time after.
- 9. the method for being used in PON system realize multicast service layering as claimed in claim 8, it is characterised in that mode-controller Block is used for multicast group user right, the control parameter for preserving configuration；That safeguards user browses history, current state, and according to Family browses history, and counting statistics information, generates user's travel log；History and configuration authority are browsed according to user, judge to work as The access right of preceding user.
- 10. the method for being used in PON system realize multicast service layering as claimed in claim 9, it is characterised in that described group Broadcasting the access right of group user includes preview rights, forbids authority, normal authority, and the specific works step of controllable module is：Receive the multicast group that multicast group user sends and add request, check the multicast group user right that controllable module preserves；Multicast group user is preview rights, it is allowed to interpolation data Link-Layer Multicast group forwarding table clause, the forwarding of network layer multicast group Table clause, and start timer, leaving for multicast group user is received after timer expiry or before timer expiry please Ask, control protocol stack module deletes data link layer multicast group forwarding table clause, network layer multicast group forwarding table clause；Multicast group user does not handle addition request to forbid authority；Multicast group user is normal authority, addition network layer multicast group forwarding table clause, data link layer multicast group forwarding table bar Mesh, until receiving the request of leaving of multicast group user, the corresponding data link layer multicast group of control protocol stack deletion the user Forward table clause, network layer multicast group forwarding table clause.
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| CN101102210A (en) * | 2007-06-06 | 2008-01-09 | 中兴通讯股份有限公司 | A distributed controllable multicast system of passive optical network and its implementation method |
| CN101399611A (en) * | 2007-09-28 | 2009-04-01 | 华为技术有限公司 | PON multicast communication system, multicast management method and corresponding device |
| CN103744717A (en) * | 2013-12-02 | 2014-04-23 | 上海斐讯数据通信技术有限公司 | ONU configuration management method based on message queue in EPON system |
| CN103929236A (en) * | 2014-04-17 | 2014-07-16 | 上海斐讯数据通信技术有限公司 | Method and system for achieving service layer with protection switching function of passive optical network port |
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| CN101102210A (en) * | 2007-06-06 | 2008-01-09 | 中兴通讯股份有限公司 | A distributed controllable multicast system of passive optical network and its implementation method |
| CN101399611A (en) * | 2007-09-28 | 2009-04-01 | 华为技术有限公司 | PON multicast communication system, multicast management method and corresponding device |
| CN103744717A (en) * | 2013-12-02 | 2014-04-23 | 上海斐讯数据通信技术有限公司 | ONU configuration management method based on message queue in EPON system |
| CN103929236A (en) * | 2014-04-17 | 2014-07-16 | 上海斐讯数据通信技术有限公司 | Method and system for achieving service layer with protection switching function of passive optical network port |
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