CN108134631A - A kind of OLT loops and the method using the OLT loop transfer data - Google Patents
A kind of OLT loops and the method using the OLT loop transfer data Download PDFInfo
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- CN108134631A CN108134631A CN201711270589.7A CN201711270589A CN108134631A CN 108134631 A CN108134631 A CN 108134631A CN 201711270589 A CN201711270589 A CN 201711270589A CN 108134631 A CN108134631 A CN 108134631A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000013307 optical fiber Substances 0.000 claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 239000000835 fiber Substances 0.000 abstract description 2
- 241001269238 Data Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
- H04B10/25891—Transmission components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
- H04B10/275—Ring-type networks
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Computing Systems (AREA)
Abstract
The present invention provides a kind of OLT loops, so that multiple OLT share a trunk optical fiber, fiber resource can be saved, also two mutually redundant links simultaneously, the reliability of system is substantially increased, main OLT and at least one intermediate OLT including forming loop, the main OLT connections trunk optical fiber, the data of the intermediate OLT are forwarded by the main OLT, while the present invention also provides the methods using the OLT loop transfer data.
Description
Technical field
The present invention relates to the technical field of PON terminals, specially a kind of OLT loops and use the OLT loop transfer numbers
According to method.
Background technology
In PON terminals, the bandwidth of OLT first line of a couplet trunk optical fibers decides the experience of user, in order to ensure the experience of user, one
As be required for reserving sufficient first line of a couplet bandwidth for user, with the increase of user, the OLT accordingly disposed is also increasing, each OLT
Trunk optical fiber is all connected to, however not all OLT can make full use of the bandwidth of trunk optical fiber, can cause some ground in this way
It is nervous just to use comparison, and other places may leave unused and cause to waste.
Invention content
In view of the above-mentioned problems, a kind of method the present invention provides OLT loops and using the OLT loop transfer data,
So that multiple OLT share a trunk optical fiber, fiber resource, while also two mutually redundant links can be saved, are carried significantly
The high reliability of system.
Its technical solution is such：A kind of OLT loops, it is characterised in that：Main OLT and at least one including forming loop
A intermediate OLT, the main OLT connections trunk optical fiber, the data of the intermediate OLT are forwarded by the main OLT.
Further, the main OLT and intermediate OLT is respectively equipped with master port, from port and PON mouthfuls, the master
The master port of OLT connects the trunk optical fiber, and the main OLT and the intermediate OLT pass through PON mouthfuls of connection ONU respectively.
Further, one of the main OLT connects the master port of the intermediate OLT from port, the intermediate OLT from
Port connect the main OLT another from port.
Further, one of the main OLT connects the master port of one of intermediate OLT from port, the intermediate OLT's
The master port of another intermediate OLT is connected from port, to the last intermediate OLT from port connects the main OLT
Another from port.
A kind of method of above-mentioned OLT loop transfer data, it is characterised in that：To each intermediate OLT itself from port
And PON mouthfuls be isolated and being isolated from port and PON mouthfuls to the main OLT, the main OLT being blocked on loop
One cause slave end mouth and centre OLT composition reserve link from port, another of main OLT is from port and centre OLT structures
Into active link, the transmission of data is carried out by the active link.
Further, it when the ONU for connecting main OLT has upstream data, is uploaded by the master port of main OLT to trunk optical fiber
Data；When there is the downlink data for the ONU for connecting main OLT in trunk optical fiber, trunk optical fiber is from the master port of main OLT to PON mouthful
Data are issued to ONU.
Further, when active link is used to carry out data transmission, when the ONU of the intermediate OLT of connection has upstream data,
Data are sent to the master port of the intermediate OLT by the ONU of the intermediate OLT of connection from PON mouthfuls, by the master port of the intermediate OLT from
Active link enters loop, until data be sent to main OLT from port, uploaded by the master port of main OLT to trunk optical fiber
Data；When the downlink data for the ONU for having the intermediate OLT of connection in trunk optical fiber, the master port of trunk optical fiber from main OLT issue number
According to, data enter loop by main OLT's from port from active link, until data are sent to the master port of the intermediate OLT, number
ONU is reached according to the PON mouths from the intermediate OLT.
Further, when active link breaks down, then data transmission is carried out using reserve link, restores the master of obstruction
The master port from OLT among port, switching of OLT is switched to from port, and switch intermediate OLT is switched to master port from port,
To being isolated from port and PON mouthfuls after the switching of intermediate OLT.
Further, when the ONU of the intermediate OLT of connection has upstream data, the ONU of intermediate OLT is connected by data from PON mouthfuls
The master port being sent to after the switching of the intermediate OLT enters ring by the master port after the switching of the intermediate OLT from active link
Road, until data be sent to main OLT from port, data are uploaded to trunk optical fiber by the master port of main OLT；Work as trunk optical fiber
In when having the downlink data of ONU of the intermediate OLT of connection, the master port of trunk optical fiber from main OLT issue data, and data pass through master
OLT's enters loop from port from reserve link, the master port after data are sent to the switching of the intermediate OLT, data from
The PON mouths of the intermediate OLT reach ONU.
Multiple OLT are connected on a loop by the OLT loops of the present invention, share a trunk optical fiber, save optical fiber money
Source, OLT loops using the present invention carry out data transmission, and provide two mutually redundant links, wherein a link hair
Another link transmission data can be enabled during raw failure, substantially increases the reliability of system.
Description of the drawings
Fig. 1 is the schematic diagram of the OLT loops of the present invention；
Fig. 2 is the schematic diagram of the OLT loops after the reserve link of the present invention enables.
Specific embodiment
See Fig. 1, a kind of OLT loops of the invention, main OLT1 and centre OLT2, centre OLT3 including forming loop are main
OLT1 is equipped with port c, port a, port b, PON mouth 4, and port c is master port c, port a, port b for from port a, from port b,
Master port c connections trunk optical fiber 5, PON mouths 4 connect ONU1, intermediate OLT2, centre OLT3 be respectively equipped with port a, port b and
PON mouths 4, intermediate OLT2, centre OLT3 port a be master port a, intermediate OLT2, centre OLT3 port b be from port b, in
Between OLT3 PON mouths 4 connect ONU2, ONU3, main OLT1 from port a connections centre OLT2 master port a, intermediate OLT2 from
The master port a, intermediate OLT3 of the intermediate OLT3 of port b connections from the main OLT1 of port b connections from port b.
The method carried out data transmission to the OLT loops in the present embodiment is as follows：To intermediate OLT2, centre OLT3 itself
Be isolated from port b and PON mouth 4, main OLT be isolated from port a with PON mouths 4, to main OLT from port b with
PON mouths 4 are isolated, and the main OLT's being blocked on loop causes slave end mouth to form reserve link with centre OLT3 from port b
7, main OLT's forms active link 6 from port a and centre OLT2, centre OLT3.
Since the data to come from port are all the upstream datas of other OLT, in order to prevent broadcast storm, prevent lower extension
Low side devices MAC table overflows and the security consideration based on user-isolated two layer message, intermediate OLT need to from port with
The PON mouths of this OLT are isolated, and main OLT is connected to the port of trunk optical fiber as master port, be connected on loop be both from
Port, since the uplink and downlink data of main OLT oneself can be forwarded directly between master port and PON mouthfuls, so main OLT from end
The data that receive of mouth are all the upstream datas of other intermediate OLT, it is therefore desirable to on the ring of main OLT from port with PON mouthfuls into
Row isolation.
When ONU1 has upstream data, main OLT1 directly serves trunk optical fiber, when the lower line number for having ONU1 in trunk optical fiber
According to when and be forwarded directly to PON mouthfuls and send to ONU1.
When ONU2 has upstream data, data are served ring by OLT3 by master port a, OLT2 by receiving the data from port b,
Since the port b of OLT2 is isolated with PON mouthfuls, so data can only be forwarded to the master port a of OLT2, data continue to serve ring, this
When main OLT1 receive data from port a, since main OLT1 is isolated between port a and PON mouthfuls, so data will directly turn
It is dealt into trunk optical fiber；When there is the downlink data of ONU2 in trunk light, main OLT1 is by data by serving ring, OLT2 from port a
After being received by master port a, it is forwarded to from port b and serves ring, OLT3 is forwarded directly to PON mouthfuls after receiving data by master port a,
Finally it is sent to ONU2.
See Fig. 2, when active link breaks down where the master port a of OLT3, main OLT1 enables reserve link, while clear
Empty or refresh all or part of FBD forwarding-table items, the uplink and downlink data of ONU1 are unaffected at this time, the ONU2 hung under OLT3 and
The forward-path of ONU3 can change, and the master port a of OLT3 first and the role from port b will switch, and master port a becomes from end
Mouthful, from port, b becomes master port, and OLT3 need to be set to be isolated between port a and PON mouthful, cancellation b and PON mouthfuls of port between every
From, while empty or refresh FBD forwarding-table items.When there is upstream data, port b when needing thus as master port serves ring
Road forwards the data to trunk optical fiber from port b by main OLT1 by the master port c of main OLT1, when having in trunk optical fiber
During the downlink data of ONU2 or ONU3, can be passed through by main OLT1 from port b and serve loop, OLT3 at this time as the port of master port
B is forwarded to PON mouthfuls after receiving data, finally send to ONU2 or ONU3.
Multiple OLT are connected on a loop by the OLT loops of the present invention, share a trunk optical fiber, save optical fiber money
Source, OLT loops using the present invention carry out data transmission, and provide two mutually redundant links, wherein a link hair
Another link transmission data can be enabled during raw failure, substantially increases the reliability of system.
More than, it is merely preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, it is any
Be familiar with the people of the technology disclosed herein technical scope in, the change or replacement that can readily occur in should all be covered at this
Within the protection domain of invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of OLT loops, it is characterised in that：Main OLT and at least one intermediate OLT including forming loop, the main OLT connect
Trunk optical fiber is connect, the data of the intermediate OLT are forwarded by the main OLT.
2. a kind of OLT loops according to claim 1, it is characterised in that：The main OLT and the intermediate OLT are set respectively
Have master port, from port and PON mouthfuls, the master port of the main OLT connects the trunk optical fiber, the main OLT and it is described in
Between OLT respectively pass through PON mouthfuls connection ONU.
3. a kind of OLT loops according to claim 1, it is characterised in that：Described in one of the main OLT connects from port
The master port of intermediate OLT, the intermediate OLT from port connect the main OLT another from port.
4. a kind of OLT loops according to claim 1, it is characterised in that：One of the main OLT connects wherein from port
The master port of one intermediate OLT, the master port that another intermediate OLT is connected from port of the intermediate OLT, to the last an institute
State intermediate OLT from port connect the main OLT another from port.
A kind of 5. method using claim 3-4 any one of them OLT loop transfer data, it is characterised in that：It is blocked in
One of main OLT on loop causes slave end mouth and centre OLT composition reserve links from port, and another of main OLT is from end
Mouth forms active link with centre OLT, passes through the transmission that the active link carries out data.
6. a kind of method using OLT loop transfer data according to claim 5, it is characterised in that：To each centre
Being isolated from port and PON mouthfuls for OLT itself and being isolated from port and PON mouthfuls to the main OLT.
7. a kind of method using OLT loop transfer data according to claim 6, it is characterised in that：As the main OLT of connection
ONU when having upstream data, data are uploaded to trunk optical fiber by the master port of main OLT；Main OLT is connected when having in trunk optical fiber
ONU downlink data when, trunk optical fiber mouthful issues data from the master port of main OLT to PON to ONU.
8. a kind of method using OLT loop transfer data according to claim 6, it is characterised in that：It is primary using
When link carries out data transmission, when the ONU of the intermediate OLT of connection has upstream data, the ONU of intermediate OLT is connected by data from PON
Mouth is sent to the master port of the intermediate OLT, enters loop from active link by the master port of the intermediate OLT, until data are sent out
Be sent to main OLT from port, data are uploaded to trunk optical fiber by the master port of main OLT；When having in trunk optical fiber, connection is intermediate
During the downlink data of the ONU of OLT, the master port of trunk optical fiber from main OLT issues data, data by main OLT from port from
Active link enters loop, and until data are sent to the master port of the intermediate OLT, data are reached from the PON mouths of the intermediate OLT
ONU。
9. a kind of method using OLT loop transfer data according to claim 6, it is characterised in that：Work as active link
Break down, then carry out data transmission using reserve link, restore obstruction main OLT from port, switch the main side of intermediate OLT
Mouth is switched to from port, and switch intermediate OLT is switched to master port from port, to after the switching of intermediate OLT from port and PON
Mouth is isolated.
10. a kind of method using OLT loop transfer data according to claim 9, it is characterised in that：When connection is intermediate
When the ONU of OLT has upstream data, the master that data are sent to from PON mouthfuls after the switching of the intermediate OLT by the ONU of intermediate OLT is connected
Port enters loop by the master port after the switching of the intermediate OLT from active link, until data be sent to main OLT from
Port uploads data by the master port of main OLT to trunk optical fiber；When the downlink for the ONU for having the intermediate OLT of connection in trunk optical fiber
During data, the master port of trunk optical fiber from main OLT issue data, and data enter ring by main OLT's from port from reserve link
Road, the master port after data are sent to the switching of the intermediate OLT, data reach ONU from the PON mouths of the intermediate OLT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711270589.7A CN108134631A (en) | 2017-12-05 | 2017-12-05 | A kind of OLT loops and the method using the OLT loop transfer data |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711270589.7A CN108134631A (en) | 2017-12-05 | 2017-12-05 | A kind of OLT loops and the method using the OLT loop transfer data |
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| CN108134631A true CN108134631A (en) | 2018-06-08 |
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|---|---|---|---|
| CN201711270589.7A Withdrawn CN108134631A (en) | 2017-12-05 | 2017-12-05 | A kind of OLT loops and the method using the OLT loop transfer data |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101378388A (en) * | 2007-08-28 | 2009-03-04 | 华为技术有限公司 | Method, system and equipment for transmitting passive optical network data |
| CN101753368A (en) * | 2008-12-01 | 2010-06-23 | 中兴通讯股份有限公司 | A kind of guard method of Ethernet |
| CN102256188A (en) * | 2010-01-31 | 2011-11-23 | Pmc-塞拉以色列有限公司 | System for redundancy in ethernet passive optical networks (EPONs) |
| US20120045199A1 (en) * | 2009-05-14 | 2012-02-23 | Zte Corporation | Method and apparatus for implementing trunk optical fiber protection in ethernet passive optical network (EPON) |
-
2017
- 2017-12-05 CN CN201711270589.7A patent/CN108134631A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101378388A (en) * | 2007-08-28 | 2009-03-04 | 华为技术有限公司 | Method, system and equipment for transmitting passive optical network data |
| CN101753368A (en) * | 2008-12-01 | 2010-06-23 | 中兴通讯股份有限公司 | A kind of guard method of Ethernet |
| US20120045199A1 (en) * | 2009-05-14 | 2012-02-23 | Zte Corporation | Method and apparatus for implementing trunk optical fiber protection in ethernet passive optical network (EPON) |
| CN102256188A (en) * | 2010-01-31 | 2011-11-23 | Pmc-塞拉以色列有限公司 | System for redundancy in ethernet passive optical networks (EPONs) |
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Application publication date: 20180608 |