CN101827099B - Method and device for allocating logical link identifiers for optical network unit - Google Patents
Method and device for allocating logical link identifiers for optical network unit Download PDFInfo
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Abstract
The invention discloses a method for allocating logical link identifiers for an optical network unit, which comprises the steps that: A, the optical network unit transmits a registration request frame carrying master-slave MAC information to an optical line terminal; and B, the optical line terminal allocates the logical link identifiers carrying master-slave logical link identification information for the optical network unit according to the master-slave MAC information, and transmits a registration frame carrying the logical link identification to the optical network unit. The invention also discloses an optical network unit and an optical line terminal. That whether the LLID of ONU is basic LLID or secondary LLID is identified by using the method that the ONU transmits the registration request frame carrying the master-slave MAC information, and the OLT allocates the LLID carrying the master-slave LLID information for the ONU according to the master-slave MAC information and transmits the registration frame carrying the LLID to the ONU.
Description
Technical field
The present invention relates to EPON (Ethernet Passive Optical Network, Ethernet passive optical network) technical field, particularly relate to a kind of distribution method and device of LLID of optical network unit.
Background technology
In Ethernet passive optical network system, OLT (the Optical Line Terminal of local side, optical line terminal) play a part dominance for the distribution of system resource, optical line terminal is at each ONU (OpticalNetwork Unit, optical network unit) between unique foundation of dispatching patcher resource be LLID (Logical LinkID, LLID).IEEE802.3ah defines each ONU a LLID, and this makes the QOS (Quality of Service, service quality) of single ONU under multiservice environment ensure to become a difficult problem.A scheme that solves QOS problem allows single ONU to have multiple LLID exactly, so just can configure different service channels for each LLID, and different priority can be set.The OLT of EPON carries out for single ONU the management of terminal, and in the situation of single LLID, ONU and LLID are one to one, manages very simple.But on ONU, enable after many LLID, the management of the LLID of OLT side to ONU and each ONU is just difficult.Because LLID is distributed by OLT, support the ONU of many LLID can only pass through normal MPCP (Multi-Point Control Protocol, Multi-point Control Protocol) (the Media Access Control of different MAC for discovery procedure, medium access control) address registers repeatedly to OLT, a LLID of each acquisition, thus realize many LLID function.It is basic LLID or subordinate LLID that ONU equipment oneself can be distinguished LLID according to MAC Address, but OLT is upper, and cannot to distinguish the registration request that ONU reports be up the registration request of basic MAC or the registration request of subordinate MAC, although can distribute LLID for it by normal MPCP discovery procedure, be basic LLID or the subordinate LLID of certain ONU but cannot identify this LLID, this brings difficulty with regard to the management of giving ONU.Fig. 1 is exactly the LLID graph of a relation between OLT and ONU, and as shown in Figure 1, on ONU, the LLID of oblique line mark is basic LLID, and whether other is subordinate LLID, are subordinate LLID but cannot distinguish these LLID in OLT side.Except problem that cannot normal management ONU, can not distinguish basic LLID and subordinate LLID also affects the business processing flow of OLT, because OLT only carries out basic OAM (Operation Administration Maintenance to subordinate LLID, Operation Administration and Maintenance) discovery procedure, and to basic LLID except carrying out basic OAM discovery procedure, also need further query expansion capability set.If can not correctly distinguish basic LLID and subordinate LLID, OLT is affected to the OAM discovery procedure meeting of ONU.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of distribution method and device of LLID of optical network unit, and the LLID that cannot identify ONU to overcome in prior art is the defect of basic LLID or subordinate LLID.
For achieving the above object, technical scheme of the present invention provides a kind of distribution method of LLID of optical network unit, said method comprising the steps of: A, optical network unit send the registration request frame of carrying principal and subordinate MAC information to optical line terminal; B, described optical line terminal, according to described principal and subordinate MAC information, for described optical network unit distributes the LLID that carries principal and subordinate's LLID information, and send to described optical network unit the registered frame that carries described LLID.
Technical scheme of the present invention also provides a kind of optical network unit, and described optical network unit comprises: registration request frame generation unit, for generating the registration request frame of carrying principal and subordinate MAC information; Registration request frame transmitting element, the registration request frame generating for send described registration request frame generation unit to optical line terminal.
Technical scheme of the present invention also provides a kind of optical line terminal, and described optical line terminal comprises: registration request frame receiving element, the registration request frame sending for receiving optical network unit; LLID allocation units, for the principal and subordinate MAC information of carrying according to described registration request frame, for described optical network unit distributes the LLID that carries principal and subordinate's LLID information; Registered frame generation unit, for generating the registered frame that carries described LLID; Registered frame transmitting element, the registered frame generating for send described registered frame generation unit to described optical network unit.
Compared with prior art, beneficial effect of the present invention is as follows:
The present invention utilizes ONU to send the registration request frame of carrying principal and subordinate MAC information to OLT, OLT is according to this principal and subordinate MAC information, for ONU distributes the LLID that carries principal and subordinate LLID information, and send the method for the registered frame that carries LLID to this ONU, the LLID of mark ONU is basic LLID or subordinate LLID.
Brief description of the drawings
Fig. 1 is that the LLID between OLT and the ONU of prior art is related to schematic diagram;
Fig. 2 is the flow chart of the distribution method of the LLID of a kind of optical network unit of the embodiment of the present invention;
Fig. 3 is the schematic diagram of ONU registration request frame (REGISTER_REG) the Flags field of the embodiment of the present invention;
Fig. 4 is the expansion schematic diagram of the LLID of the embodiment of the present invention;
Fig. 5 is the schematic diagram of ONU registration reply frame (REGISTER_ACK) the Flags field of the embodiment of the present invention;
Fig. 6 is the structural representation of a kind of optical network unit of the embodiment of the present invention;
Fig. 7 is the structural representation of a kind of optical line terminal of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
A distribution method for the LLID of optical network unit, comprises the following steps: A, optical network unit send the registration request frame of carrying principal and subordinate MAC information to optical line terminal; B, optical line terminal, according to principal and subordinate MAC information, for optical network unit distributes the LLID that carries principal and subordinate's LLID information, and send to optical network unit the registered frame that carries LLID.
Steps A specifically comprises: A1, optical network unit arrange the value of a reservation bit position of registration request frame Flags field according to the type that reports registration MAC; The registration request frame after arranging is sent to optical line terminal by A2, optical network unit.
In steps A 1, comprising: in the time of registration request that the type of MAC is basic MAC, the value that reservation bit position is set is a; In the time that the type of MAC is the registration request of subordinate MAC, the value that reservation bit position is set is b; The value of a be 0 or the value of 1, b be 0 or 1, and a is different from the value of b.
Step B specifically comprises: B1, optical line terminal are receiving after the registration request frame of optical network unit transmission, are that optical network unit distributes a LLID value; The principal and subordinate MAC information that B2, optical line terminal carry according to registration request frame arranges the value of a reservation bit position of LLID; B3, optical line terminal send registered frame to optical network unit, the LLID after registered frame carries and arranges.
In step B2, comprising: in the time that the value of the reservation bit position of the registration request frame Flags field of setting in steps A 1 is a, the value that the reservation bit position of LLID is set is a; In the time that the value of the reservation bit position of the registration request frame Flags field of setting in steps A 1 is b, the value that the reservation bit position of LLID is set is b.
After step B, also comprise: C, optical network unit are after receiving the registered frame of optical line terminal transmission, and whether verification principal and subordinate LLID information mates.
After step C, also comprise: D, optical network unit send the registration reply frame that carries principal and subordinate MAC information to optical line terminal; Specifically comprise: D1, optical network unit arrange the value of a reservation bit position of registration reply frame Flags field according to the type that reports registration MAC; The registration reply frame after arranging is sent to optical line terminal by D2, optical network unit.
In step D1, comprising: in the time of registration request that the type of MAC is basic MAC, the value that reservation bit position is set is c; In the time that the type of MAC is the registration request of subordinate MAC, the value that reservation bit position is set is d; The value of c be 0 or the value of 1, d be 0 or 1, and c is different from the value of d.
After step D, also comprise: E, optical line terminal are after receiving the registration reply frame of optical network unit transmission, and whether the value of the reservation bit position of the registration reply frame Flags field arranging in checking procedure D1 mates.
Normal MPCP discovery procedure is controlled by OLT, and OLT periodically sends DiscoveryGATE frame, has wherein comprised the utilizable Discovery time slot of ONU window, makes off-line ONU have an opportunity to send message to allow OLT know existing of it.MPCP discovery procedure comprises the following steps:
1, OLT sends Discovery GATE frame in the mode of broadcast, has comprised initial time and the event length of finding window in Discovery GATE frame.
2, ONU is receiving after Discovery GATE frame, after random wait a period of time, send REGISTER_REQ frame to OLT, because Discovery window is unique, send REGISTER_REQ message simultaneously and cause conflict for fear of different ONU, all ONU must realize a random back algorithm and send with the REGISTER_REQ that postpones it.In REGISTER_REQ frame, the MAC Address that has comprised ONU and other parameter.
3, OLT receives after an effective REGISTER_REQ message, registers this ONU, distributes a new LLID, and binds with corresponding MAC Address.OLT sends REGISTER message to the ONU recently finding afterwards, comprises the LLID that distributes to this ONU in message.
4, OLT starts Register_Gate_Timer timer, and after timer expiry, OLT will send a normal gate to ONU immediately.
5, ONU returns to REGISTER_ACK message in the grant of OLT window, completes the discovery registration of MPCP.
In the present invention, ONU utilizes whether this time registration of Flags field identification of registration request frame in MPCP agreement (REGISTER_REG) and registration reply frame (REGISTER_ACK) is the registration request of basic MAC.And OLT is with the occurrence of low 14 the bit storage LLID in 16 bits in the time distributing LLID, and whether identify this LLID by the value of a reservation bit position is basic LLID.Specifically in the following ways: ONU registration request frame (REGISTER_REG) and ONU registration reply frame (REGISTER_ACK) to IEEE802.3ah agreement expand, reservation bit position to Flags field redefines, and utilizing this time registration of the reservation bit position of Flags field of ONU registration request frame (REGISTER_REG) and the reservation bit bit-identify of the Flags field of registration reply frame (REGISTER_ACK) is basic MAC registration or subordinate MAC registration.When its value is that 1 expression is the registration of basic MAC, its value is that 0 expression is the registration of subordinate MAC.OLT arranges the reservation bit position of LLID according to the value of flag bit in Flags field, if the flag bit of Flags is 1, the reservation bit position that LLID is set is 1, if the flag bit of Flags is 0, the reservation bit position that LLID is set is 0.Just can to distinguish this LLID according to the value of LLID be basic LLID or subordinate LLID to the upper-layer service processing unit of OLT like this.
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail:
The distribution method of the LLID of a kind of optical network unit of the embodiment of the present invention as shown in Figure 2, comprises the following steps:
Step s201, optical network unit sends the registration request frame of carrying principal and subordinate MAC information to optical line terminal.In the present embodiment, in the 2nd step of MPCP discovery procedure, ONU reports the type of registration MAC that the value of the 6th bit of registration request frame (REGISTER_REG) Flags field is set according to this, if the registration request of basic MAC, 1 with regard to the value that this is set, if the registration request of subordinate MAC is 0 with regard to the value that this is set; Then the registration request frame after arranging is sent to OLT by ONU.Wherein ONU registration request frame (REGISTER_REG) Flags field as shown in Figure 3.
Step s202, optical line terminal, according to this principal and subordinate MAC information, for optical network unit distributes the LLID that carries principal and subordinate LLID information, and sends to this optical network unit the registered frame that carries LLID.In the present embodiment, OLT receives after the registration request frame (REGISTER_REG) of ONU, is that it distributes a legal LLID value, and arranges the 15th of LLID according to the value of the 6th of Flags field the bit.Then in the 3rd step of MPCP discovery procedure, in the time that ONU sends registered frame (REGISTER), LLID is sent to ONU.Wherein the expansion of LLID as shown in Figure 4.
Step s203, optical network unit is after receiving the registered frame of optical line terminal transmission, and whether verification principal and subordinate LLID information mates.In the present embodiment, ONU receives after the registered frame (REGISTER) of OLT, the 15th of LLID that verification OLT distributes whether mate (this verification is only used for judging whether OLT supports to distinguish the function of basic LLID and subordinate LLID, not as succeed in registration or failure according to).
Step s204, optical network unit sends the registration reply frame that carries principal and subordinate MAC information to optical line terminal.In the present embodiment, in the 5th step of MPCP discovery procedure, ONU arranges the value of the 4th bit of registration reply frame (REGISTER_ACK) Flags field according to the type of this registration MAC.If the registration request of basic MAC is 1 with regard to the value that this is set, if the registration request of subordinate NAC is 0 with regard to the value that this is set; Then the registration reply frame after arranging is sent to OLT by ONU.Wherein ONU registration reply frame (REGISTER_ACK) Flags field as shown in Figure 5.
Step s205, optical line terminal is after receiving the registration reply frame of optical network unit transmission, and whether the value of the reservation bit position of verification registration reply frame Flags field mates.In the present embodiment, OLT receives after the registration reply frame (REGISTER_ACK) of ONU, (this verification is only used for judging whether ONU supports to distinguish the function of basic LLID and subordinate LLID to the value of the 4th bit of verification Flags field, not as succeed in registration or failure according to), discovery procedure finishes, and notice upper-layer service unit continues to process.
The structure of a kind of optical network unit of the embodiment of the present invention as shown in Figure 6, comprise registration request frame generation unit 61, registration request frame transmitting element 62, registered frame receiving element 63, principal and subordinate's LLID information checking unit 64, registration reply frame generation unit 65 and registration reply frame transmitting element 66, wherein registration request frame generation unit 61 is connected with registration request frame transmitting element 62, registered frame receiving element 63 is connected with principal and subordinate's LLID information checking unit 64, and registration reply frame generation unit 65 is connected with registration reply frame transmitting element.
Registration request frame generation unit 61 is for generating the registration request frame of carrying principal and subordinate MAC information, registration request frame transmitting element 62 is for sending to optical line terminal the registration request frame that registration request frame generation unit 61 generates, the registered frame that registered frame receiving element 63 sends for receiving optical line terminal, whether principal and subordinate's LLID information that principal and subordinate's LLID information checking unit 64 carries for registered frame described in verification mates, registration reply frame generation unit 65 is for generating the registration reply frame that carries principal and subordinate MAC information, registration reply frame transmitting element 66 is for sending the registration reply frame that registration reply frame generation unit 65 generates to optical line terminal.
The structure of a kind of optical line terminal of the embodiment of the present invention as shown in Figure 7, comprise registration request frame receiving element 71, LLID allocation units 72, registered frame generation unit 73, registered frame transmitting element 74, registration reply frame receiving element 75 and principal and subordinate MAC information checking unit 76, wherein registration request frame receiving element 71 is connected with LLID allocation units 72, registered frame generation unit 73 is connected with LLID allocation units 72 and registered frame transmitting element 74 respectively, and registration reply frame receiving element 75 is connected with principal and subordinate MAC information checking unit 76.
The registration request frame that registration request frame receiving element 71 sends for receiving optical network unit, the principal and subordinate MAC information of LLID allocation units 72 for carrying according to described registration request frame, for described optical network unit distributes the LLID that carries principal and subordinate's LLID information, registered frame generation unit 73 is for generating the registered frame that carries described LLID, registered frame transmitting element 74 is for sending to described optical network unit the registered frame that registered frame generation unit 73 generates, the registration reply frame that registration reply frame receiving element 75 sends for receiving optical network unit, whether the principal and subordinate MAC information that principal and subordinate MAC information checking unit 76 carries for registration reply frame described in verification mates.
The present invention utilizes ONU to send the registration request frame of carrying principal and subordinate MAC information to OLT, OLT is according to this principal and subordinate MAC information, for ONU distributes the LLID that carries principal and subordinate LLID information, and send the method for the registered frame that carries LLID to this ONU, the LLID of mark ONU is basic LLID or subordinate LLID.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a distribution method for the LLID of optical network unit, is characterized in that, said method comprising the steps of:
A, optical network unit send the registration request frame of carrying principal and subordinate MAC information to optical line terminal; Steps A specifically comprises:
A1, optical network unit arrange the value of a reservation bit position of registration request frame Flags field according to the type that reports registration MAC; Steps A 1 comprises: in the time of registration request that the type of MAC is basic MAC, the value that described reservation bit position is set is a; In the time that the type of MAC is the registration request of subordinate MAC, the value that described reservation bit position is set is b; The value of described a is 0 or 1, and the value of described b is 0 or 1, and described a is different from the value of b;
The registration request frame after arranging is sent to optical line terminal by A2, described optical network unit;
B, described optical line terminal, according to described principal and subordinate MAC information, for described optical network unit distributes the LLID that carries principal and subordinate's LLID information, and send to described optical network unit the registered frame that carries described LLID; Described step B specifically comprises:
B1, optical line terminal are receiving after the registration request frame of optical network unit transmission, are that described optical network unit distributes a LLID value;
The principal and subordinate MAC information that B2, described optical line terminal carry according to described registration request frame arranges the value of a reservation bit position of described LLID;
B3, described optical line terminal send registered frame, the LLID after described registered frame carries and arranges to described optical network unit.
2. the distribution method of the LLID of optical network unit as claimed in claim 1, is characterized in that, in described step B2, comprising:
In the time that the value of the reservation bit position of the described registration request frame Flags field of setting in steps A 1 is a, the value that the reservation bit position of described LLID is set is a;
In the time that the value of the reservation bit position of the described registration request frame Flags field of setting in steps A 1 is b, the value that the reservation bit position of described LLID is set is b.
3. the distribution method of the LLID of the optical network unit as described in claim 1 to 2 any one, is characterized in that, after described step B, also comprises:
C, described optical network unit are after receiving the registered frame that described optical line terminal sends, and whether principal and subordinate's LLID information mates described in verification.
4. the distribution method of the LLID of optical network unit as claimed in claim 3, is characterized in that, after described step C, also comprises: D, optical network unit send the registration reply frame that carries principal and subordinate MAC information to optical line terminal; Specifically comprise:
D1, optical network unit arrange the value of a reservation bit position of registration reply frame Flags field according to the type that reports registration MAC;
The registration reply frame after arranging is sent to optical line terminal by D2, described optical network unit.
5. the distribution method of the LLID of optical network unit as claimed in claim 4, is characterized in that, in described step D1, comprising:
In the time of registration request that the type of MAC is basic MAC, the value that described reservation bit position is set is c;
In the time that the type of MAC is the registration request of subordinate MAC, the value that described reservation bit position is set is d;
The value of described c is 0 or 1, and the value of described d is 0 or 1, and described c is different from the value of d.
6. the distribution method of the LLID of optical network unit as claimed in claim 4, is characterized in that, after described step D, also comprises:
E, described optical line terminal are after receiving the registration reply frame of described optical network unit transmission, and whether the value of the reservation bit position of the described registration reply frame Flags field arranging in checking procedure D1 mates.
7. an optical line terminal, is characterized in that, described optical line terminal comprises:
Registration request frame receiving element, the registration request frame sending for receiving optical network unit;
LLID allocation units, for the principal and subordinate MAC information of carrying according to described registration request frame, for described optical network unit distributes the LLID that carries principal and subordinate's LLID information;
Described LLID allocation units specifically comprise: optical line terminal is receiving after the registration request frame of optical network unit transmission, for described optical network unit distributes a LLID value, the principal and subordinate MAC information of carrying according to described registration request frame arranges the value of a reservation bit position of described LLID;
Registered frame generation unit, for generating the registered frame that carries described LLID;
Described registered frame generation unit specifically comprises: send registered frame, the LLID after described registered frame carries and arranges to described optical network unit;
Registered frame transmitting element, the registered frame generating for send described registered frame generation unit to described optical network unit.
8. optical line terminal as claimed in claim 7, is characterized in that, described optical line terminal also comprises:
Registration reply frame receiving element, the registration reply frame sending for receiving optical network unit;
Principal and subordinate MAC information checking unit, whether the principal and subordinate MAC information of carrying for registration reply frame described in verification mates.
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101986719A (en) * | 2010-11-19 | 2011-03-16 | 杭州开鼎科技有限公司 | Method for expanding registered frame in EPON system |
| CN102013995B (en) * | 2010-11-19 | 2013-01-16 | 杭州开鼎科技有限公司 | Management method for logical link identification (LLID) of optical line terminal (OLT) |
| CN103138924B (en) * | 2011-11-24 | 2017-12-08 | 中兴通讯股份有限公司 | Scrambled data frame decryption method and device in a kind of EPON system |
| CN103391487B (en) * | 2012-05-11 | 2017-12-01 | 中兴通讯股份有限公司 | A kind of method and device of the transmission services under multi-logical link markers |
| CN105592179B (en) * | 2015-09-29 | 2019-04-05 | 新华三技术有限公司 | A kind of application of LLID, distribution method and device |
| CN107295428B (en) * | 2016-03-31 | 2020-07-31 | 南京中兴软件有限责任公司 | Optical network unit registration method and device and optical line terminal |
| CN107342973B (en) * | 2016-05-03 | 2021-07-20 | 中兴通讯股份有限公司 | Passive optical network registration method and device and passive optical network system |
| CN107872739B (en) * | 2016-09-26 | 2020-09-22 | 中国电信股份有限公司 | Allocation method of LLID of ONU, OLT and EPON system |
| CN107872738B (en) * | 2016-09-26 | 2020-12-25 | 中国电信股份有限公司 | Management method of LLID of ONU, OLT and EPON system |
| CN114726932B (en) * | 2022-05-12 | 2024-06-21 | 欧梯恩智能科技(苏州)有限公司 | Data transmission method and device and electronic equipment |
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| JP4307381B2 (en) * | 2002-09-13 | 2009-08-05 | ピーエムシー−シエラ イスラエル リミテッド | Method of operating an Ethernet passive optical network including a network unit having a plurality of entities |
| KR100563657B1 (en) * | 2003-10-21 | 2006-03-23 | 한국전자통신연구원 | Vlan aware shared lan emulation method and device with manageable llid in epon |
| US7797745B2 (en) * | 2004-12-22 | 2010-09-14 | Electronics And Telecommunications Research Institute | MAC security entity for link security entity and transmitting and receiving method therefor |
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| CN1897505A (en) * | 2006-06-05 | 2007-01-17 | 中国电信股份有限公司 | Light network unit log method based on inquiry in Ethernet non-light source network |
| CN101179428A (en) * | 2007-09-28 | 2008-05-14 | 西安大唐电信有限公司 | Method of managing multi-logical link ID optical network unit in Ethernet passive optical network |
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