WO2011026335A1 - 一种广播包/组播控制报文处理方法和装置 - Google Patents

一种广播包/组播控制报文处理方法和装置 Download PDF

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Publication number
WO2011026335A1
WO2011026335A1 PCT/CN2010/072289 CN2010072289W WO2011026335A1 WO 2011026335 A1 WO2011026335 A1 WO 2011026335A1 CN 2010072289 W CN2010072289 W CN 2010072289W WO 2011026335 A1 WO2011026335 A1 WO 2011026335A1
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Prior art keywords
onu
vlan
broadcast
multicast
packet
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PCT/CN2010/072289
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English (en)
French (fr)
Inventor
何苑凌
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中兴通讯股份有限公司
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Priority to BRPI1012620A priority Critical patent/BRPI1012620A2/pt
Priority to EP10813257.2A priority patent/EP2339796B1/en
Priority to US13/126,468 priority patent/US8711856B2/en
Priority to JP2012527183A priority patent/JP2013503580A/ja
Publication of WO2011026335A1 publication Critical patent/WO2011026335A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H04L12/287—Remote access server, e.g. BRAS
    • H04L12/2874—Processing of data for distribution to the subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H04L12/2878—Access multiplexer, e.g. DSLAM
    • H04L12/2879—Access multiplexer, e.g. DSLAM characterised by the network type on the uplink side, i.e. towards the service provider network
    • H04L12/2885—Arrangements interfacing with optical systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0086—Network resource allocation, dimensioning or optimisation

Definitions

  • the present invention relates to the field of passive optical network (PON) technology, and in particular, to a broadcast packet/multicast control message processing method and apparatus.
  • PON passive optical network
  • a Passive Optical Network (PON) system usually consists of an Optical Line Terminal (OLT) on the central office, an Optical Network Unit (ONU) on the user side, and an Optical Network Termination (Optical Network Termination).
  • ONT Optical Network Termination
  • ODN Optical Distribution Network
  • the ODN consists of passive optical components such as single-mode fibers, splitters, and optical connectors that provide optical transmission media for the physical connection between the OLT and the ONU.
  • the ODN is usually a point-to-multipoint structure, that is, one OLT connects multiple ONUs through an ODN. IEEE, Institute of Electrical and Electronics Engineers 802.3-2005 Section 5 and IEEE802.3av standard next-generation broadband passive optical integrated access technology.
  • the IEEE standard only defines the physical layer and link layer standards of 1G-EPON and 10G-EPON, and is not involved for other service functions.
  • the IEEE802.3-2005 Section 5 standard defines the 1G-EPON broadcast logical channel identifier as 0x7fff; the IEEE802.3av standard defines the 10G-EPON broadcast logical channel identifier as 0x7ffe.
  • the EPON OLT uses the broadcast logical channel to send data to all ports under one PON port. Then, the ONU determines which one to use according to the locally saved multicast and local user interface correspondence table. The port forwards broadcast and multicast packets. The above is mainly for the case where only one ONU of the same type is connected to one port under the OLT.
  • FIG. 1 is a schematic diagram of networking in the prior art in which 1G-EPON and 10G-EPON coexist.
  • FIG. 1 there are three ONUs under the optical splitter 1 connected to port 1 of the OLT, where ONU A and ONU B are IG-EPON ONU, ONU C is 10G-EPON ONU.
  • ONUs of different rates are connected to one port of the same OLT, there is no relevant provision in the existing standards regarding how the OLT uses broadcast or multicast logical channels to transmit downlink broadcast packets and multicast control messages. Efficiently utilizing the physical channel of the PON to implement downlink broadcast packet and multicast control is a problem to be solved.
  • the main purpose of the present invention is to provide a broadcast packet/multicast control packet processing method and apparatus, so as to implement downlink broadcast packet/multicast control packet processing when different types of ONUs coexist.
  • the present invention provides a broadcast packet/multicast control packet processing method, including:
  • an optical line terminal OLT that connects different types of optical network units ONUs is configured to transmit downlink broadcast packets/multicast control packets
  • the data is copied to different broadcasts/groups according to the ONU type to which the user joining the virtual LAN VLAN belongs. Broadcast logical channel.
  • the data is copied to different broadcast/multicast logical channels according to the ONU type to which the user joining the VLAN belongs:
  • the broadcast packet/multicast control packet is delivered by the broadcast/multicast logical channel corresponding to the same ONU type. .
  • the copying data to different broadcast/multicast logical channels according to the ONU type to which the user joining the VLAN belongs is: A user of a different ONU type belongs to the VLAN under the OLT port corresponding to the VLAN, and each of the broadcast/multicast logical channels corresponding to each ONU type sends a broadcast packet/multicast control message to the ONU under the OLT port.
  • the ONU type is divided according to a rate.
  • the method further includes: after the ONU receives the downlink broadcast packet/multicast control, the broadcast packet/multicast control report according to the correspondence between the VLAN and the user port established on the ONU The text is sent to all ports belonging to the VLAN.
  • the OLT determines the users joining the VLAN and the ONU types to which they belong according to the established information items.
  • the information entry includes: a correspondence between the ONU logical link identifier and the ONU type, a correspondence between the ONU logical link identifier and the OLT port, a correspondence between the VLAN and the ONU logical link identifier, and a correspondence between the VLAN and the OLT port.
  • the invention also discloses a broadcast packet/multicast control packet processing device, which is applied to an optical line terminal OLT connected to an ONU of different types of optical network units under the same port, and includes:
  • a data receiving module configured to receive a downlink broadcast packet/multicast control packet
  • the data replication module is configured to: when the downlink broadcast packet/multicast control packet is forwarded, copy the broadcast packet/multicast control packet received by the data receiving module to different broadcasts according to the ONU type to which the user joining the VLAN belongs /Multicast logical channel.
  • the data replication module copies the broadcast packet/multicast control packet received by the data receiving module to different broadcast/multicast logical channels as follows: Only the users of the same ONU type belong to the OLT port belonging to the VLAN. In the case of the VLAN, the data replication module delivers the broadcast packet/multicast control packet to the broadcast/multicast logical channel corresponding to the same ONU type.
  • the data replication module copies the broadcast packet/multicast control packet received by the data receiving module to different broadcast/multicast logical channels as follows: Users belonging to different ONU types belong to the OLT port belonging to the VLAN. When the VLAN is described, the data replication module passes through each ONU. Each of the broadcast/multicast logical channels corresponding to the type sends a broadcast packet/multicast control message to the
  • the ONU type is divided according to a rate.
  • the device further includes an entry creation module, configured to establish the information entry;
  • the data replication module is further configured to determine, according to the established information item, a user who joins the VLAN and an ONU type to which the user belongs.
  • the information items created by the entry creation module include: the correspondence between the ONU logical link identifier and the ONU type, the correspondence between the ONU logical link identifier and the OLT port, the correspondence between the VLAN and the ONU logical link identifier, and the VLAN and Correspondence between OLT ports.
  • the method and device for processing a broadcast packet/multicast control packet provided by the present invention, when the OLT of different types of ONUs is connected to the OLT for downlink broadcast packet/downlink multicast control packet forwarding, according to the user belonging to the VLAN
  • the present invention realizes efficient processing of downlink broadcast packets and multicast control messages when different types of ONUs coexist, and enables the ONU to distinguish whether the data belongs before performing the downlink broadcast packet and the downlink multicast control packet forwarding processing.
  • This type of ONU avoids unnecessary interference of excessive data on the ONU. At the same time, it can efficiently utilize the bandwidth between the OLT and the ONU to avoid bandwidth consumption of meaningless data streams.
  • FIG. 1 is a schematic diagram of networking in the prior art when a 1G-EPON and a 10G-EPON coexist
  • FIG. 2 is a flowchart of a method for processing a broadcast packet/multicast control packet according to the present invention
  • FIG. 3 is a flowchart of a method for processing a downlink broadcast packet according to Embodiment 1 of the present invention
  • FIG. 4 is a flowchart of a method for processing a downlink multicast control message according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic structural diagram of a device for processing a broadcast packet/multicast control packet according to the present invention. detailed description
  • FIG. 2 is a flowchart of a method for processing a broadcast packet/multicast control packet according to the present invention. As shown in FIG. 2, the method mainly includes the following steps:
  • Step 201 Determine the ONU type to which the user belonging to the VLAN belongs when the OLT that connects the different types of ONUs on the same port performs downlink broadcast packet/multicast control packet forwarding.
  • the ONU type can be divided according to the rate, for example: In EPON, the ONU type is divided into IG-EPON ONU and 10G-EPON ONU according to the rate.
  • the present invention is not limited to the division according to the rate, and the division basis of the ONU type can be extended according to actual needs.
  • the VLAN can be obtained by the following method: If the downlink broadcast packet/multicast control packet is a packet with a label, the OLT determines the multicast VLAN according to the VLAN tag carried in the data packet. If the broadcast packet/multicast control packet is an unlabeled packet, the OLT considers that the multicast VLAN is equal to the default VLAN of the OLT network side port.
  • Step 202 The OLT copies the downlink broadcast packet/multicast control packet to different broadcast/multicast logical channels according to the ONU type of the user belonging to the VLAN.
  • the downlink broadcast packet/multicast control packet is delivered by the broadcast/multicast logical channel corresponding to the same ONU type. It can be sent to the ONU under the OLT port. If a user with different ONUs belongs to the same OLT port of the VLAN, the downlink broadcast is sent through the broadcast/multicast logical channels corresponding to each ONU type. The packet/multicast control is given to the ONU under the OLT port.
  • the OLT may determine the user belonging to the VLAN according to various established information items.
  • the ONU type and the OLT port delivered by the multicast data determine whether there are different ONU users under the OLT ports corresponding to the VLAN.
  • the information entry may include: a correspondence between the ONU logical link identifier and the ONU type, a correspondence between the ONU logical link identifier and the OLT port, a correspondence between the VLAN ONU logical link identifier, and a correspondence between the VLAN and the OLT port. Relationships and so on.
  • the mapping between a VLAN and an OLT port can be configured through the NMS.
  • the mapping between the VLAN and the ONU logical link identifier is generated by the NMS or by the OLT according to the correspondence between the VLAN and the OLT port and the corresponding relationship between the ONU logical link identifier and the OLT port.
  • the OLT searches for the corresponding relationship between the VLAN and the OLT port, and obtains the OLT port corresponding to the VLAN. Then, the OLT associates the relationship between the logical link identifier of the ONU and the OLT port according to the correspondence between the VLAN and the logical link identifier of the ONU, and the logical link identifier of the ONU.
  • the user of the different ONUs in the OLT port belongs to the VLAN.
  • the OLT sends the downlink broadcast packet/multicast control packet to the broadcast/multicast logical channel corresponding to the ONU type.
  • the ONU under the OLT port.
  • the OLT sends a downlink broadcast packet/multicast control packet to each of the broadcast/multicast logical channels corresponding to each ONU type when the user of the different ONUs belongs to the VLAN. Give the ONU under the OLT port.
  • the ONU type is divided into 1 G-EPON ONU and 10G-EPON ONU as an example. If the OLT determines that only the 1G-EPON ONU type user belongs to the VLAN, the downlink broadcast packet/multicast control packet passes the 1G. - The broadcast logical channel corresponding to the EPON ONU type (the broadcast logical channel identified as 0x7fff) is sent to the ONU under the OLT port.
  • the downlink broadcast packet/multicast control packet is sent to the ONU under the OLT port through the broadcast logical channel (the broadcast logical channel identified as 0x7ffe) corresponding to the 10G-EPON ONU type; if the OLT determines that it exists simultaneously under a certain port 1G-EPON ONU type and 10G-EPON ONU type users If it belongs to a VLAN, the downlink broadcast packet/multicast control packet passes the broadcast logical channel corresponding to the 1 G-EPON ONU type (the broadcast logical channel identified as 0x7fff), and the broadcast logical channel corresponding to the 10G-EPON ONU type.
  • the broadcast logical channel the broadcast logical channel identified as 0x7ffe
  • a broadcast packet/multicast control packet is sent each time (the broadcast logical channel identified as 0x7ffe). Through such two transmissions, it can be ensured that both the 1G-EPON ONU and the 10G-EPON ONU under the OLT port can receive the downlink broadcast packet/multicast control message.
  • the following takes the downlink broadcast packet/multicast control text processing in the EPON as an example to further elaborate the above-mentioned broadcast packet/multicast control packet processing method.
  • the method for processing broadcast packet/multicast control messages of the present invention is not limited to EPON only, and is applicable to other types of PONs.
  • the downlink broadcast packet processing of the EPON is elaborated.
  • the establishment of VLAN entries and other correspondences (both of which belong to information table entries) is as follows:
  • the correspondence 1 Establishing a correspondence between the ONU logical link identifier and the ONU type in the OLT (referred to as the correspondence 1), which is used to identify which ONU logical link identifiers correspond to 1G-EPON, and which correspond to 10G-EPON;
  • the correspondence between the OLT port and the ONU logical link identifier is established on the OLT (recorded as correspondence 2).
  • Step 301 The OLT receives the broadcast packet through its own uplink port.
  • Steps 302 to 306 If the broadcast packet is tagged, the OLT searches for a VLAN entry corresponding to the VLAN tag according to the VLAN tag carried in the broadcast packet. If the broadcast packet does not carry a label, look for the VLAN entry corresponding to the default VLAN of the OLT network-side interface. If found, step 308 is performed; otherwise, step 307 is performed.
  • Step 307 When the OLT does not find the VLAN entry corresponding to the VLAN, discard the broadcast packet or process it according to the system settings. After the operation is completed, the entire process ends.
  • Step 308 When the OLT finds the VLAN entry corresponding to the VLAN, finds the OLT port corresponding to the multicast group according to the established VLAN entry (corresponding relationship 4).
  • Step 309 Determine whether only the 1G-EPON ONU belongs to the VLAN under the OLT port. If yes, go to step 310; otherwise, go to step 311.
  • the ONU logical link identifier of the VLAN belonging to the OLT port is searched, and the corresponding relationship 1 is used to determine whether only the 1G-EPON ONU belongs to the VLAN.
  • Step 310 After determining that only the 1 G-EPON ONU belongs to the VLAN, the broadcast packet is sent to the ONU under the OLT port through the broadcast logical channel of 0x7fff.
  • Step 311 Determine whether only the 10G-EPON ONU belongs to the VLAN under the OLT port. If yes, go to step 312; otherwise, go to step 313.
  • the ONU logical link identifier of the VLAN belonging to the OLT port is searched, and the corresponding relationship 1 is used to determine whether only the 10G-EPON ONU belongs to the VLAN.
  • Step 312 If it is determined that only the 10G-EPON ONU belongs to the VLAN, the broadcast packet is sent to the ONU under the OLT port through the broadcast logical channel of 0x7ffe.
  • Step 313 It is determined that 1 G-EPON ONU and 10G-EPON ONU belong to the VLAN under the OLT port, and respectively pass the 0x7fff broadcast logical channel and the 0x7ffe broadcast logical communication. Each channel sends a broadcast packet to the ONU under the OLT port.
  • steps 301 to 313 are performed on the OLT side.
  • Step 314 The ONU receives the broadcast packet through the PON port.
  • Step 315 The ONU sends the broadcast packet to all user ports belonging to the VLAN according to the correspondence relationship 5.
  • step 314 and step 315 are performed on the ONU side.
  • the EPON system uses an implementation method of the IGMP multicast management protocol.
  • a multicast VLAN entry is created on the OLT to determine the OLT port.
  • other mappings are required to determine the users that belong to the multicast VLAN and the ONU type to which they belong.
  • the establishment of multicast VLAN entries and other mappings (both of which belong to information table entries) is as follows:
  • the correspondence 1 Establishing a correspondence between the ONU logical link identifier and the ONU type in the OLT (referred to as the correspondence 1), which is used to identify which ONU logical link identifiers correspond to 1G-EPON, and which correspond to 10G-EPON;
  • the correspondence between the OLT port and the ONU logical link identifier is established on the OLT (recorded as correspondence 2).
  • correspondence 3 corresponds to correspond to correspondence 3
  • correspondence 4 corresponds to correspondence 4 on the OLT according to the network management configuration.
  • the method for processing the downlink multicast control packet implemented on the basis of the foregoing information entry is as shown in FIG. 4, which mainly includes the following steps:
  • Step 401 The OLT receives the IGMP QUERY packet through its uplink port.
  • Steps 402 to 406 If the IGMP QUERY packet is tagged, the OLT searches for a multicast VLAN entry corresponding to the VLAN tag according to the VLAN tag carried in the QUERY packet. in case The IGMP QUERY packet does not carry a label. It searches for the multicast VLAN entry corresponding to the default VLAN of the OLT network-side interface. If found, step 408 is performed; otherwise, step 407 is performed.
  • Step 407 When the OLT does not find the multicast VLAN entry corresponding to the multicast VLAN, the IGMP QUERY packet is discarded or processed according to the system setting. After the operation is completed, the entire process ends.
  • Step 408 When the OLT finds the multicast VLAN entry corresponding to the VLAN, the OLT port corresponding to the multicast group is found according to the established multicast VLAN entry (corresponding relationship 4).
  • Step 409 It is determined whether there is only 1 G-EPON ONU in the OLT port belongs to the multicast VLAN. If yes, go to step 410; otherwise, go to step 411.
  • the ONU logical link identifier of the multicast VLAN that belongs to the multicast VLAN is found, and the corresponding relationship 1 is used to determine whether only the 1G-EPON ONU belongs to the multicast VLAN.
  • Step 410 If it is determined that only the 1G-EPON ONU belongs to the multicast VLAN, the IGMP QUERY packet is sent to the ONU under the OLT port through the broadcast logical channel of 0x7fff.
  • Step 411 Determine whether only the 10G-EPON ONU belongs to the multicast VLAN under the OLT port. If yes, go to step 412; otherwise, go to step 413.
  • the ONU logical link identifier of the multicast VLAN belonging to the multicast VLAN is searched, and the corresponding relationship 1 is used to determine whether only the 10G-EPON ONU belongs to the multicast VLAN.
  • Step 412 If it is determined that only the 10G-EPON ONU belongs to the multicast VLAN, the IGMP QUERY packet is sent to the ONU under the OLT port through the broadcast logical channel of 0x7 ffe.
  • Step 413 Determine that there are 1 G-EPON ONU and 10G-EPON ONU under the OLT port. It belongs to the multicast VLAN, and sends an IGMP QUERY packet to the ONU under the OLT port through the 0x7fff broadcast logical channel and the 0x7ffe broadcast logical channel.
  • Step 414 The ONU receives the IGMP QUERY packet through the PON port.
  • Step 415 The ONU sends the IGMP QUERY packet according to the correspondence 5 to all user ports belonging to the multicast VLAN.
  • the correspondence between the ONU logical link identifier and the ONU type on the OLT can be determined by using the following two methods:
  • Method 1 Configure according to the value range of the ONU logical link identifier.
  • the value of the ONU logical link identifier is 1G-EPON ONU within a certain range and 10G-EPON ONU in another range.
  • the value of the ONU logical link identifier is greater than or equal to 0, and is less than or equal to 64, it is 1G-EPON ONU; when the value of the ONU logical link identifier is greater than or equal to 65, and less than or equal to 511, it is 10G- EPON ONU. Or, if the value of the ONU logical link identifier is greater than or equal to 0, and is less than or equal to 2047, it is 1G-EPON ONU; when the value of the ONU logical link identifier is greater than or equal to 2048, and less than or equal to 4095, it is 10G- EPON ONU.
  • Method 2 Determine dynamically according to system configuration or ONU registration.
  • the mapping between the ONU logical link identifier and the ONU type is saved in the OLT, and which ONU logical link identifiers are corresponding to the 1G-EPON ONU and which are corresponding to the 10G-EPON ONU, and are updated or manually when the ONU is registered. Configuration.
  • the present invention further provides a broadcast packet/multicast control packet processing device, which is applicable to an OLT connected to different types of ONUs on the same port, as shown in FIG. 5.
  • the device includes: a data receiving module 10 and a data copying module 20;
  • the data receiving module 10 is configured to receive a downlink broadcast packet/multicast control packet.
  • the data replication module 20 is configured to perform, when performing downlink broadcast packet/multicast control packet forwarding, according to The ONU type to which the user belonging to the VLAN belongs, copying the downlink broadcast packet/multicast control to different broadcast/multicast logical channels.
  • the data replication module 20 is further configured to: when a user of the same ONU type belongs to the VLAN, the multicast data is transmitted through the broadcast/multicast logical channel corresponding to the same ONU type. The ONU is sent to the OLT port.
  • each broadcast/multicast logical channel corresponding to each ONU type sends a broadcast packet/group. The broadcast control is sent to the ONU under the OLT port.
  • the ONU type can be divided according to the rate.
  • the ONU type is divided into 1G-EPON ONU and 10G-EPON ONU according to the rate.
  • the device further includes an entry establishing module 30 for establishing an information entry on the basis of the foregoing module.
  • the information entry may include: a correspondence between the ONU logical link identifier and the ONU type, a correspondence between the ONU logical link identifier and the OLT port, a correspondence between the VLAN and the ONU logical link identifier, and a correspondence between the VLAN and the OLT port.
  • the data replication module 20 is further configured to determine, according to the established information table entry, the user belonging to the VLAN and the ONU type to which it belongs.
  • the present invention achieves efficient processing of downlink broadcast packet/multicast control messages when different types of ONUs coexist, and enables the ONU to distinguish between downlink broadcast packet/multicast control packet processing. Whether the broadcast packet/multicast control packet data belongs to this type of ONU, avoiding unnecessary interference of excessive data to the ONU; and efficiently utilizing the bandwidth between the OLT and the ONU to avoid bandwidth consumption of meaningless data streams. .

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Description

一种广播包 /组播控制报文处理方法和装置 技术领域
本发明涉及无源光网络（PON )技术领域， 尤其涉及一种广播包 /组播 控制报文处理方法和装置。 背景技术
无源光网络 ( Passive Optical Network , PON ) 系统通常由局侧的光线 路终端（ Optical Line Terminal, OLT )、用户侧的光网络单元（ Optical Network Unit, ONU ) /光网络终端（ Optical Network Termination , ONT )和光分配 网络（ Optical Distribution Network , ODN )组成。 ODN由单模光纤、 分光 器和光连接器等无源光器件组成， 为 OLT和 ONU之间的物理连接提供光 传输媒质。 ODN通常为点到多点结构， 即一个 OLT通过 ODN连接多个 ONU。 电气和电子工程师协会 （IEEE , Institute of Electrical and Electronics Engineers ) 802.3-2005 Section 5和 IEEE802.3av标准的新一代宽带无源光综 合接入技术。
对于 EPON, IEEE标准仅仅定义了 1G-EPON和 10G-EPON的物理层 和链路层标准， 对于其他业务功能没有涉及。 对于组播， IEEE802.3-2005 Section 5标准定义了 1G-EPON的广播逻辑通道标识为 0x7fff; IEEE802.3av 标准定义了 10G-EPON的广播逻辑通道标识为 0x7ffe。 通常， EPON OLT 在发送广播和组播报文时会利用广播逻辑通道将数据发送到一个 PON口下 的所有端口； 然后， ONU再根据本地保存的组播和本地用户接口的对应表 确定向哪个端口进行广播和组播报文的转发。 以上主要是针对 OLT下的一个端口上只连接有相同类型的 ONU时的 情况。
图 1为现有技术中 1G-EPON和 10G-EPON共存时的组网示意图，如图 1所示， OLT的端口 1连接的分光器 1下有 3个 ONU, 其中， ONU A和 ONU B为 IG-EPON ONU, ONU C为 10G-EPON ONU。当不同速率的 ONU 连接到同一 OLT的一个端口上时，关于 OLT如何使用广播或组播逻辑通道 来发送下行广播包和组播控制报文， 现有的标准中没有相关的规定， 因此， 如何高效地利用 PON的物理通道来实现下行广播包和组播控制 "^文的转发 是一个有待解决的问题。 发明内容
有鉴于此， 本发明的主要目的在于提供一种广播包 /组播控制报文处理 方法和装置， 以实现不同类型的 ONU共存时的下行广播包 /组播控制报文 处理。
为达到上述目的， 本发明的技术方案是这样实现的：
本发明提供了一种广播包 /组播控制报文处理方法， 包括：
在同一端口下连接不同类型的光网络单元 ONU的光线路终端 OLT进 行下行广播包 /组播控制报文发送时， 根据加入虚拟局域网 VLAN的用户所 属的 ONU类型， 复制数据到不同的广播 /组播逻辑通道。
所述根据加入 VLAN的用户所属的 ONU类型， 复制数据到不同的广 播 /组播逻辑通道为：
所述 VLAN对应的 OLT端口下只存在相同 ONU类型的用户属于所述 VLAN,则将所述广播包 /组播控制 ^艮文通过所述相同 ONU类型所对应的广 播 /组播逻辑通道下发。
所述根据加入 VLAN的用户所属的 ONU类型， 复制数据到不同的广 播 /组播逻辑通道为： 所述 VLAN对应的 OLT端口下同时存在不同 ONU类型的用户属于所 述 VLAN, 则分别通过各 ONU类型所对应的广播 /组播逻辑通道各发送一 份广播包 /组播控制报文给所述 OLT端口下的 ONU。
所述 ONU类型根据速率进行划分。
该方法进一步包括： 所述 ONU收到所述下行广播包 /组播控制"¾文后 , 根据所述 ONU上建立的所述 VLAN与用户端口的对应关系将所述广播包 / 组播控制报文发送到属于所述 VLAN的所有端口上。
所述 OLT根据建立的各种信息表项确定加入 VLAN的用户及其所属的 ONU类型。
所述信息表项包括： ONU逻辑链路标识与 ONU类型的对应关系、 ONU 逻辑链路标识与 OLT端口的对应关系、 VLAN与 ONU逻辑链路标识的对 应关系、 VLAN与 OLT端口的对应关系。
本发明还公开一种广播包 /组播控制报文处理装置， 应用于同一端口下 连接不同类型的光网络单元 ONU的光线路终端 OLT, 包括：
数据接收模块， 用于接收下行广播包 /组播控制报文；
数据复制模块， 用于在进行下行广播包 /组播控制报文转发时， 根据加 入 VLAN的用户所属的 ONU类型， 复制所述数据接收模块接收的广播包 / 组播控制报文到不同的广播 /组播逻辑通道。
所述数据复制模块复制所述数据接收模块接收的广播包 /组播控制报文 到不同的广播 /组播逻辑通道为： 在属于所述 VLAN的 OLT端口下只存在 相同 ONU类型的用户属于所述 VLAN时， 数据复制模块将所述广播包 /组 播控制报文通过所述相同 ONU类型所对应的广播 /组播逻辑通道下发。
所述数据复制模块复制所述数据接收模块接收的广播包 /组播控制报文 到不同的广播 /组播逻辑通道为： 在属于所述 VLAN的 OLT端口下同时存 在不同 ONU类型的用户属于所述 VLAN时，数据复制模块分别通过各 ONU 类型所对应的广播 /组播逻辑通道各发送一份广播包 /组播控制报文给所述
OLT端口下的 ONU。
所述 ONU类型根据速率进行划分。
该装置还包括表项建立模块， 用于建立所述信息表项；
所述数据复制模块， 还用于根据建立的信息表项确定加入 VLAN的用 户及其所属的 ONU类型。
所述表项建立模块建立的信息表项包括： ONU逻辑链路标识与 ONU 类型的对应关系、 ONU逻辑链路标识与 OLT端口的对应关系、 VLAN与 ONU逻辑链路标识的对应关系、 VLAN与 OLT端口的对应关系。
本发明所提供的一种广播包 /组播控制报文处理方法和装置， 在同一端 口下连接不同类型的 ONU的 OLT进行下行广播包 /下行组播控制报文转发 时， 根据属于 VLAN的用户所属的 ONU类型， 复制下行广播包 /下行组播 控制报文到不同的广播 /组播逻辑通道。通过本发明实现了不同类型的 ONU 共存时对下行广播包和组播控制报文的高效处理 ,且使 ONU在进行下行广 播包和下行组播控制报文转发处理之前就能区分出数据是否属于本类型的 ONU,避免过多数据对 ONU不必要的干扰；同时可高效的利用 OLT和 ONU 之间的带宽， 避免无意义的数据流对带宽的占用。 附图说明
图 1为现有技术中 1G-EPON和 10G-EPON共存时的组网示意图； 图 2为本发明一种广播包 /组播控制报文处理方法的流程图；
图 3为本发明实施例一的下行广播包处理方法的流程图；
图 4为本发明实施例二的下行组播控制 文处理方法的流程图； 图 5为本发明一种广播包 /组播控制报文处理装置的组成结构示意图。 具体实施方式
下面结合附图和具体实施例对本发明的技术方案进一步详细阐述。 图 2为本发明一种广播包 /组播控制报文处理方法的流程图， 如图 2所 示， 该方法主要包括以下步骤：
步骤 201：在同一端口下连接不同类型的 ONU的 OLT进行下行广播包 /组播控制报文转发时， 确定属于 VLAN的用户所属的 ONU类型。
ONU类型可以根据速率进行划分， 例如： 在 EPON 中， 根据速率将 ONU类型划分为 IG-EPON ONU和 10G-EPON ONU。 当然，本发明并非仅 限于根据速率的划分， ONU类型的划分依据可以根据实际需要进行扩展。
VLAN可以通过以下方法获取： 如果下行广播包 /组播控制报文为带标 签的数据包， OLT根据数据包携带的 VLAN标签确定组播 VLAN。 如果下 行广播包 /组播控制报文为不带标签的数据包， OLT认为组播 VLAN等于 OLT网络侧端口默认的 VLAN。
步骤 202: OLT根据属于 VLAN的用户所属的 ONU类型，复制下行广 播包 /组播控制报文到不同的广播 /组播逻辑通道。
具体的， 如果 VLAN对应的某 OLT端口下只存在相同 ONU类型的用 户属于该 VLAN, 则将下行广播包 /组播控制报文通过相同 ONU类型所对 应的广播 /组播逻辑通道下发， 具体可以下发给 OLT端口下的 ONU; 如果 VLAN对应的某 OLT端口下同时存在不同 ONU类型的用户属于该 VLAN, 则分别通过各 ONU类型所对应的广播 /组播逻辑通道各发送一份下行广播 包 /组播控制^艮文给该 OLT端口下的 ONU。
基于上述的广播包 /组播控制报文处理方法，在实际应用中 OLT接收到 下行广播包 /组播控制报文数据时， 可以根据建立的各种信息表项确定属于 该 VLAN的用户及其所属的 ONU类型， 以及组播数据下发的 OLT端口， 进而确定 VLAN对应的各 OLT端口下是否存在不同 ONU类型的用户。 较佳的， 信息表项可以包括： ONU逻辑链路标识与 ONU类型的对应 关系、 ONU逻辑链路标识与 OLT端口的对应关系、 VLAN ONU逻辑链路 标识的对应关系、 VLAN与 OLT端口的对应关系等等。 VLAN与 OLT端 口的对应关系可通过网管配置。 VLAN与 ONU逻辑链路标识的对应关系通 过网管配置或者 OLT根据 VLAN与 OLT端口的对应关系和 ONU逻辑链路 标识与 OLT端口的对应关生成。
OLT查找 VLAN与 OLT端口的对应关系， 获得与 VLAN对应的 OLT 端口； 然后， OLT根据 VLAN与 ONU逻辑链路标识的对应关系， ONU逻 辑链路标识与 OLT端口的对应关系， ONU逻辑链路标识与 ONU类型的对 应关系，确定属于 VLAN的用户及其所属的 ONU类型和 ONU逻辑链路标 识； 进而判断各个 OLT端口下是否存在不同 ONU类型的用户属于 VLAN。 在确定 VLAN对应的某个 OLT端口下只存在相同 ONU类型的用户属于该 VLAN时， OLT将下行广播包 /组播控制 ^艮文通过该 ONU类型所对应的广 播 /组播逻辑通道下发给该 OLT端口下的 ONU。 在确定 VLAN对应的某个 OLT端口下同时存在不同 ONU类型的用户属于该 VLAN时， OLT分别通 过各 ONU类型所对应的广播 /组播逻辑通道各发送一份下行广播包 /组播控 制报文给该 OLT端口下的 ONU。
以 ONU类型划分为 1 G-EPON ONU和 10G-EPON ONU为例，如果 OLT 确定某个端口下只存在 1G-EPON ONU类型的用户属于 VLAN, 则将下行 广播包 /组播控制报文通过 1G-EPON ONU类型所对应的广播逻辑通道（标 识为 0x7fff的广播逻辑通道 ) 下发给该 OLT端口下的 ONU; 如果 OLT确 定某个端口下只存在 10G-EPON ONU类型的用户属于 VLAN, 则将下行广 播包 /组播控制报文通过 10G-EPON ONU类型所对应的广播逻辑通道（标识 为 0x7ffe的广播逻辑通道）下发给该 OLT端口下的 ONU; 如果 OLT确定 在某个端口下同时存在 1G-EPON ONU类型和 10G-EPON ONU类型的用户 属于 VLAN , 则将下行广播包 /组播控制 艮文分别通过 1 G-EPON ONU类型 所对应的广播逻辑通道 (标识为 0x7fff的广播逻辑通道）， 以及 10G-EPON ONU类型所对应的广播逻辑通道（标识为 0x7ffe的广播逻辑通道 )各下发 一次下行广播包 /组播控制报文。 通过这样的两次发送， 能够保证该 OLT端 口下的 1G-EPON ONU和 10G-EPON ONU都能接收到下行广播包 /组播控 制报文。
下面分别以 EPON中的下行广播包 /组播控制 文处理为例， 对上述的 广播包 /组播控制报文处理方法进一步详细阐述。但是本发明的广播包 /组播 控制报文处理方法并非仅限于适用 EPON, 对于其他类型的 PON也是适用 的。
在本发明的实施例一中，对 EPON的下行广播包处理进行了详细阐述。 在 OLT上需要建立 VLAN表项， 用于确定 OLT端口， 另外还需建立其他 对应关系用于确定属于 VLAN的用户及其所属的 ONU类型。 VLAN表项 和其他对应关系 （都属于信息表项） 的建立操作具体为：
1、 在 OLT中建立 ONU逻辑链路标识与 ONU类型的对应关系 （记为 对应关系 1 ) , 用以标识哪些 ONU逻辑链路标识对应的是 1G-EPON, 哪些 对应的是 10G-EPON;
2、在 ONU注册时， 在 OLT上建立 OLT端口与 ONU逻辑链路标识的 对应关系 （记为对应关系 2 ) 。
3、 根据网管配置建立 VLAN与 ONU逻辑链路标识的对应关系 （记为 对应关系 3 ) , 以及 VLAN与 OLT端口的对应关系 （记为对应关系 4 ) 。
4、 根据网管配置在 ONU上建立 VLAN与 ONU用户端口的对应关系 (记为对应关系 5 ) 。
在上述信息表项的基础上所实现的下行广播包处理方法如图 3 所示， 主要包括以下步骤： 步骤 301 : OLT通过自身的上联端口接收广播包。
步骤 302〜306： 如果广播包带标签， OLT根据广播包中携带的 VLAN 标签查找与该 VLAN标签相对应的 VLAN表项。 如果广播包不携带标签， 查找 OLT网络侧接口默认 VLAN对应的 VLAN表项。 如果找到则执行步 骤 308; 否则， 执行步骤 307。
步骤 307: 在 OLT没有查找到与 VLAN相对应的 VLAN表项时， 将广 播包丟弃或按系统设置处理， 操作执行完毕后结束整个流程。
步骤 308: 在 OLT查找到与该 VLAN相对应的 VLAN表项时，根据建 立的 VLAN表项 （对应关系 4 ) , 查找到与该组播组相对应的 OLT端口。
步骤 309: 判断在该 OLT端口下是否只存在 1G-EPON ONU属于该 VLAN, 如果是， 执行步骤 310; 否则， 执行步骤 311。
根据对应关系 2对和应关系 3 , 查找各 OLT端口下属于该 VLAN的 ONU逻辑链路标识， 并依此和对应关系 1判断是否只存在 1G-EPON ONU 属于该 VLAN。
步骤 310： 在判断 OLT端口下只有 1 G-EPON ONU属于该 VLAN , 则 将广播包通过 0x7fff的广播逻辑通道发送给该 OLT端口下的 ONU。
步骤 311 : 判断在该 OLT端口下是否只存在 10G-EPON ONU属于该 VLAN, 如果是， 执行步骤 312; 否则， 执行步骤 313。
根据对应关系 2对和应关系 3 , 查找各 OLT端口下属于该 VLAN的 ONU逻辑链路标识，并依此和对应关系 1判断是否只存在 10G-EPON ONU 属于该 VLAN。
步骤 312: 在判断 OLT端口下只有 10G-EPON ONU属于该 VLAN, 则 将广播包通过 0x7ffe的广播逻辑通道发送给该 OLT端口下的 ONU。
步骤 313：确定该 OLT端口下同时有 1 G-EPON ONU和 10G-EPON ONU 属于该 VLAN, 并分别通过 0x7fff的广播逻辑通道和 0x7ffe的广播逻辑通 道各发送一份广播包给该 OLT端口下的 ONU。
需要说明的是， 步骤 301至步骤 313在 OLT侧执行。
步骤 314: ONU通过 PON口接收广播包。
步骤 315: ONU根据对应关系 5将广播包发送到属于该 VLAN的所有 用户端口。
需要说明的是， 步骤 314、 步骤 315在 ONU侧执行。
在本发明的实施例二中， EPON系统釆用 IGMP组播管理协议的实现方 法。 在 OLT上需要建立组播 VLAN表项， 用于确定 OLT端口， 另外还需 建立其他对应关系用于确定属于组播 VLAN的用户及其所属的 ONU类型。 组播 VLAN表项和其他对应关系 （都属于信息表项） 的建立操作具体为：
1、 在 OLT中建立 ONU逻辑链路标识与 ONU类型的对应关系 （记为 对应关系 1 ) , 用以标识哪些 ONU逻辑链路标识对应的是 1G-EPON, 哪些 对应的是 10G-EPON;
2、在 ONU注册时， 在 OLT上建立 OLT端口与 ONU逻辑链路标识的 对应关系 （记为对应关系 2 ) 。
3、根据网管配置在 OLT上建立组播 VLAN与 ONU逻辑链路标识的对 应关系 （记为对应关系 3 ) , 以及组播 VLAN与 OLT端口的对应关系 （记 为对应关系 4 ) 。
4、 根据网管配置在 ONU上建立组播 VLAN与 ONU用户端口的对应 关系 （记为对应关系 5 ) 。
在上述信息表项的基础上所实现的下行组播控制报文处理方法如图 4 所示， 主要包括以下步骤：
步骤 401： OLT通过自身的上联端口接收 IGMP QUERY包。
步骤 402〜406： 如果 IGMP QUERY包带标签， OLT根据 QUERY包中 携带的 VLAN标签查找与该 VLAN标签相对应的组播 VLAN表项。 如果 IGMP QUERY包不携带标签， 查找 OLT网络侧接口默认 VLAN对应的组 播 VLAN表项。 如果找到则执行步骤 408; 否则， 执行步骤 407。
步骤 407:在 OLT没有查找到与组播 VLAN相对应的组播 VLAN表项 时， 将 IGMP QUERY包丟弃或按系统设置处理， 操作执行完毕后结束整个 流程。
步骤 408: 在 OLT查找到与该 VLAN相对应的组播 VLAN表项时 ,根 据建立的组播 VLAN表项（对应关系 4 ) ,查找到与该组播组相对应的 OLT 端口。
步骤 409： 判断在该 OLT端口下是否只存在 1 G-EPON ONU属于该组 播 VLAN, 如果是， 执行步骤 410; 否则， 执行步骤 411。
根据对应关系 2对和应关系 3 , 查找各 OLT端口下属于该组播 VLAN 的 ONU逻辑链路标识，并依此和对应关系 1判断是否只存在 1G-EPON ONU 属于该组播 VLAN。
步骤 410:在判断 OLT端口下只有 1G-EPON ONU属于该组播 VLAN, 则将 IGMP QUERY包通过 0x7fff的广播逻辑通道发送给该 OLT端口下的 ONU。
步骤 411 :判断在该 OLT端口下是否只存在 10G-EPON ONU属于该组 播 VLAN, 如果是， 执行步骤 412; 否则， 执行步骤 413。
根据对应关系 2对和应关系 3 , 查找各 OLT端口下属于该组播 VLAN 的 ONU逻辑链路标识， 并依此和对应关系 1 判断是否只存在 10G-EPON ONU属于该组播 VLAN。
步骤 412:在判断 OLT端口下只有 10G-EPON ONU属于该组播 VLAN, 则将 IGMP QUERY包通过 0x7 ffe的广播逻辑通道发送给该 OLT端口下的 ONU。
步骤 413：确定该 OLT端口下同时有 1 G-EPON ONU和 10G-EPON ONU 属于该组播 VLAN, 并分别通过 0x7fff的广播逻辑通道和 0x7ffe的广播逻 辑通道各发送一份 IGMP QUERY包给该 OLT端口下的 ONU。
步骤 414: ONU通过 PON口接收 IGMP QUERY包。
步骤 415: ONU根据对应关系 5将 IGMP QUERY包发送到属于该组播 VLAN的所有用户端口。
需要指出的是， OLT上 ONU逻辑链路标识与 ONU类型的对应关系可 以釆用但不限于以下两种方法来确定：
方法一： 根据 ONU逻辑链路标识的取值范围配置。 规定 ONU逻辑链 路标识的值在一定范围内为 1G-EPON ONU, 在另一范围内为 10G-EPON ONU。
例如： 规定 ONU逻辑链路标识的值大于或等于 0, 且小于或等于 64 时， 为 1G-EPON ONU; ONU逻辑链路标识的值大于或等于 65, 且小于或 等于 511时， 为 10G-EPON ONU。 或者， 规定 ONU逻辑链路标识的值大 于或等于 0, 且小于或等于 2047时， 为 1G-EPON ONU; ONU逻辑链路标 识的值大于或等于 2048, 且小于或等于 4095时， 为 10G-EPON ONU。
方法二： 根据系统配置或者 ONU注册情况动态确定。 在 OLT中保存 ONU逻辑链路标识与 ONU类型的对应关系，标识出哪些 ONU逻辑链路标 识对应的是 1G-EPON ONU,哪些对应的是 10G-EPON ONU,并在 ONU注 册时进行更新或手动配置。
为实现上述广播包 /组播控制报文处理方法， 本发明还提供了一种广播 包 /组播控制报文处理装置，该装置适用于同一端口下连接不同类型的 ONU 的 OLT, 如图 5所示， 该装置包括： 数据接收模块 10和数据复制模块 20; 其中，
数据接收模块 10, 用于接收下行广播包 /组播控制报文。
数据复制模块 20, 用于在进行下行广播包 /组播控制报文转发时， 根据 属于 VLAN的用户所属的 ONU类型， 复制下行广播包 /组播控制"¾文到不 同的广播 /组播逻辑通道。
较佳的， 数据复制模块 20进一步用于， 在 VLAN对应的某 OLT端口 下只存在相同 ONU类型的用户属于该 VLAN时，将组播数据通过相同 ONU 类型所对应的广播 /组播逻辑通道下发给 OLT端口下的 ONU; 在 VLAN对 应的某 OLT端口下同时存在不同 ONU类型的用户属于该 VLAN时， 分别 通过各 ONU类型所对应的广播 /组播逻辑通道各发送一份广播包 /组播控制 才艮文给该 OLT端口下的 ONU。
其中， ONU类型可以根据速率进行划分， 例如： 在 EPON中， 根据速 率将 ONU类型划分为 1G-EPON ONU和 10G-EPON ONU。
较佳的， 在该装置在上述模块的基础上进一步包括表项建立模块 30, 用于建立信息表项。 该信息表项可以包括： ONU逻辑链路标识与 ONU类 型的对应关系， ONU逻辑链路标识与 OLT端口的对应关系， VLAN与 ONU 逻辑链路标识的对应关系， VLAN与 OLT端口的对应关系等等； 相应的， 数据复制模块 20进一步用于，根据建立的信息表项确定属于 VLAN的用户 及其所属的 ONU类型。
综上所述， 通过本发明实现了不同类型的 ONU共存时对下行广播包 / 组播控制报文的高效处理， 且使 ONU在进行下行广播包 /组播控制报文处 理之前就能区分出广播包 /组播控制报文数据是否属于本类型的 ONU,避免 过多数据对 ONU不必要的干扰；同时可高效的利用 OLT和 ONU之间的带 宽， 避免无意义的数据流对带宽的占用。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种广播包 /组播控制 ^文处理方法， 其特征在于， 该方法包括： 在同一端口下连接不同类型的光网络单元 ONU的光线路终端 OLT进 行下行广播包 /组播控制报文发送时， 根据加入虚拟局域网 VLAN的用户所 属的 ONU类型， 复制数据到不同的广播 /组播逻辑通道。
2、 根据权利要求 1所述的方法， 其特征在于， 所述根据加入 VLAN的 用户所属的 ONU类型， 复制数据到不同的广播 /组播逻辑通道为：
所述 VLAN对应的 OLT端口下只存在相同 ONU类型的用户属于所述 VLAN,则将所述广播包 /组播控制 ^艮文通过所述相同 ONU类型所对应的广 播 /组播逻辑通道下发。
3、 根据权利要求 1所述的方法， 其特征在于， 所述根据加入 VLAN的 用户所属的 ONU类型， 复制数据到不同的广播 /组播逻辑通道为：
所述 VLAN对应的 OLT端口下同时存在不同 ONU类型的用户属于所 述 VLAN, 则分别通过各 ONU类型所对应的广播 /组播逻辑通道各发送一 份广播包 /组播控制报文给所述 OLT端口下的 ONU。
4、 根据权利要求 1至 3任一项所述的方法， 其特征在于， 所述 ONU 类型根据速率进行划分。
5、 根据权利要求 1至 3任一项所述的方法， 其特征在于， 该方法进一 步包括： 所述 ONU收到所述下行广播包 /组播控制报文后， 根据所述 ONU 上建立的所述 VLAN与用户端口的对应关系将所述广播包 /组播控制 ^艮文发 送到属于所述 VLAN的所有端口上。
6、 根据权利要求 1 至 3任一项所述的方法， 其特征在于， 所述 OLT 根据建立的各种信息表项确定加入 VLAN的用户及其所属的 ONU类型。
7、根据权利要求 6所述的方法，其特征在于，所述信息表项包括： ONU 逻辑链路标识与 ONU类型的对应关系、 ONU逻辑链路标识与 OLT端口的 对应关系、 VLAN与 ONU逻辑链路标识的对应关系、 VLAN与 OLT端口 的对应关系。
8、一种广播包 /组播控制报文处理装置，应用于同一端口下连接不同类 型的光网络单元 ONU的光线路终端 OLT, 其特征在于， 该装置包括：
数据接收模块， 用于接收下行广播包 /组播控制报文；
数据复制模块， 用于在进行下行广播包 /组播控制报文转发时， 根据加 入 VLAN的用户所属的 ONU类型， 复制所述数据接收模块接收的广播包 / 组播控制报文到不同的广播 /组播逻辑通道。
9、 根据权利要求 8所述的装置， 其特征在于， 所述数据复制模块复制 所述数据接收模块接收的广播包 /组播控制报文到不同的广播 /组播逻辑通 道为： 在属于所述 VLAN的 OLT端口下只存在相同 ONU类型的用户属于 所述 VLAN 时， 数据复制模块将所述广播包 /组播控制报文通过所述相同 ONU类型所对应的广播 /组播逻辑通道下发。
10、 根据权利要求 8所述的装置， 其特征在于， 所述数据复制模块复 制所述数据接收模块接收的广播包 /组播控制报文到不同的广播 /组播逻辑 通道为： 在属于所述 VLAN的 OLT端口下同时存在不同 ONU类型的用户 属于所述 VLAN时， 数据复制模块分别通过各 ONU类型所对应的广播 /组 播逻辑通道各发送一份广播包 /组播控制报文给所述 OLT端口下的 ONU。
11、根据权利要求 8至 10任一项所述的装置， 其特征在于， 所述 ONU 类型根据速率进行划分。
12、 根据权利要求 8至 10任一项所述的装置， 其特征在于， 该装置还 包括表项建立模块， 用于建立所述信息表项；
所述数据复制模块， 还用于根据建立的信息表项确定加入 VLAN的用 户及其所属的 ONU类型。
13、 根据权利要求 12所述的装置， 其特征在于， 所述表项建立模块建 立的信息表项包括： ONU逻辑链路标识与 ONU类型的对应关系、 ONU逻 辑链路标识与 OLT端口的对应关系、 VLAN与 ONU逻辑链路标识的对应 关系、 VLAN与 OLT端口的对应关系。
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Free format text: APRESENTE A TRADUCAO SIMPLES DA FOLHA DE ROSTO DA CERTIDAO DE DEPOSITO DA PRIORIDADE REIVINDICADA; OU DECLARACAO DE QUE OS DADOS DO PEDIDO INTERNACIONAL ESTAO FIELMENTE CONTIDOS NA PRIORIDADE REIVINDICADA, CONTENDO TODOS OS DADOS IDENTIFICADORES DESTA, CONFORME O PARAGRAFO UNICO DO ART. 25 DA RESOLUCAO 77/2013. ADEMAIS, APRESENTE NOVA FOLHA DO RESUMO COM TITULO CONFORME DETERMINA O ART. 22 DA INSTRUCAO NORMATIVA PR 31/2013.

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