WO2012075846A1 - 域划分时报文的广播方法及装置 - Google Patents
域划分时报文的广播方法及装置 Download PDFInfo
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- WO2012075846A1 WO2012075846A1 PCT/CN2011/079837 CN2011079837W WO2012075846A1 WO 2012075846 A1 WO2012075846 A1 WO 2012075846A1 CN 2011079837 W CN2011079837 W CN 2011079837W WO 2012075846 A1 WO2012075846 A1 WO 2012075846A1
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- WIPO (PCT)
- Prior art keywords
- entry information
- forwarding entry
- identifier
- switching device
- path
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Classifications
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- 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
- H04L12/1886—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains
-
- 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
- H04L12/1863—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports
- H04L12/1877—Measures taken prior to transmission
Definitions
- TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a method and apparatus for broadcasting a message when a domain is divided.
- VPLS Virtual Area Network (Local Area Network) service
- L2VPN Layer 2 Virtual Private Network
- MPLS Multi Protocol Label Switching
- VPN Virtual Private Network
- VPLS provides accessibility through MAC (Media Access Control) address learning: 1) Remote MAC address learning associated with PW (Pseudo Wire, virtual connection between two virtual exchange instances), through PW Go to the remote MAC address.
- the PW is composed of a pair of unidirectional VC LSPs (Virtual Circuit Label Switch Paths). After learning the original unknown MAC address on the VC LSP in the inbound direction, the PW needs to use the MAC address with the MAC address.
- the VC LSPs in the outbound direction form a mapping relationship. 2) Learn the local MAC address of the directly connected port of the user and learn the MAC address of the direct access through the AC (Attachment Circuit).
- VPLS For the packets transmitted on the CE (Customer Edge), you need to learn the source MAC address of the packet to the corresponding port of the VSI (Virtual Switch Instance).
- PE Provide Edge
- the conditional restrictions for the VPLS MAC address learning are as follows: 1) For a packet whose destination MAC address is a non-broadcast address, if the PE has not learned the MAC address, the PE will broadcast the packet. 2) If the PE receives the broadcast packet from the local user, it will forward the broadcast packet to all other ports on the same VPLS and all other PEs in the same VPLS.
- the Spoke-PE1 When the Spoke-PE1 does not learn the MAC address of the Spoke-PE2, the Spoke-PE1 sends a broadcast packet to the Hub through the pseudowire of the Hub-PE to the Spoke-PE1.
- - PE core layer PE device
- the broadcast traffic is sent to other ports except the local port in this example. If no other ports are found, the traffic is discarded. In this case, the Hub-PE is sent to the Spoke-PE2.
- the pseudowire is the same as the pseudowire port in the inbound direction of the broadcast packet. Therefore, traffic is no longer forwarded from this port.
- the network similar to that of Figures 1 and 2 also has Figure 3.
- the AC (Attachment Circuit, the link between the CE and the PE) also has the same problem of discarding broadcast traffic.
- PC_2 that has arrived through CE1 and PC_1 belongs to different VLAN access (with different VLAN TAG (tag) attributes) cannot be broadcast from the same port.
- VLAN TAG (tag) attributes different VLAN TAG (tag) attributes
- the present invention provides a broadcast scheme for a message when a domain is divided, which is a problem of packet blocking caused by domain division in the related art.
- a method for broadcasting a message in a domain division manner including: a switching device sets an identifier for a path in a domain; and after receiving a packet from a path, the switching device uses a different identifier from the path. Path broadcast message.
- the switching device sets the identifier for the path in the domain, including: the switching device generates the VPLS forwarding entry information of the virtual private local area network service corresponding to the path in the domain, and obtains the identifier corresponding to the VPLS forwarding entry information; the switching device determines that there is no VPLS forwarding in the forwarding table. Entry information; The switching device writes the VPLS forwarding entry information and identity to the forwarding table. Preferably, the switching device generates the VPLS forwarding entry information, and obtains the identifier corresponding to the VPLS forwarding entry information. The master processing unit of the switching device generates the VPLS forwarding entry information and obtains the identifier corresponding to the VPLS forwarding entry information.
- the switching device generates the VPLS forwarding entry information
- the identifier corresponding to the VPLS forwarding entry information includes: the main control processing unit of the switching device generates the VPLS forwarding entry information; and the main control processing unit sends the VPLS forwarding entry information to the line of the switching device. Card;
- the line card obtains the identifier corresponding to the VPLS forwarding entry information.
- the identifier corresponding to the VPLS forwarding entry information is: the virtual forwarding instance of the switching device identifies that the VFI ID management module determines whether the VPLS forwarding entry information has a corresponding identifier; if yes, the VFI ID management module sends the corresponding identifier to the exchange.
- the main control processing unit or line card of the device if not, the VFI ID management module assigns a corresponding identifier to the VPLS forwarding entry information, and sends the corresponding identifier to the main control processing unit or line card of the switching device.
- the switching device broadcasts the packet by using a path with a different identifier from the path.
- the switching device searches for a path with a different identifier in a forwarding table in the forwarding table after receiving the packet.
- the device broadcasts messages using paths with different identities.
- a broadcast apparatus for a message during domain division comprising: a setting module configured to set an identifier for a path in a domain; a receiving module configured to receive a message from a path; a broadcast module, setting Broadcast a message to use a path with a different identity to this path.
- the setting module includes: a generating submodule, configured to generate virtual private local area network service VPLS forwarding entry information corresponding to the path in the domain; and acquiring a submodule, configured to obtain an identifier corresponding to the VPLS forwarding entry information; Determining that there is no VPLS forwarding entry information in the forwarding table; the recording submodule is configured to write the VPLS forwarding entry information and the identifier into the forwarding table.
- the generating submodule and the obtaining submodule are located in a main control processing unit of the switching device.
- the obtaining submodule is located in the main control processing unit of the switching device, the obtaining submodule is located in the line card of the switching device, and the obtaining submodule is set to generate VPLS forwarding entry information; the main control processing unit is configured to send the VPLS forwarding entry information
- the line card is set; the line card is set to obtain the identifier corresponding to the VPLS forwarding entry information.
- the identifier is set in the path of the domain, and when the packet is received, the packet is broadcasted by using a path different from the path of the received packet, and the packet blocking caused by the domain division in the related art is solved. The problem, in turn, achieves the effect of normal broadcast messages.
- FIG. 1 is a schematic diagram of an example of a PW networking according to the related art
- FIG. 2 is a schematic diagram of another PW networking according to the related art
- 3 is a schematic diagram of an AC networking according to the related art
- FIG. 4 is a flowchart of a method for broadcasting a message when domain division according to an embodiment of the present invention
- FIG. 5 is a flowchart of a method for VFI ID allocation and synchronization according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of a process of processing an AC-side broadcast packet according to an embodiment of the present invention
- FIG. 7 is a schematic diagram of a PW-side broadcast packet processing flow according to an embodiment of the present invention
- FIG. 8 is a domain division time report according to an embodiment of the present invention
- FIG. 9 is a structural block diagram of a setting module according to an embodiment of the present invention.
- FIG. 4 is a flowchart of a method for broadcasting a packet during domain division according to an embodiment of the present invention.
- the method includes step S402. Go to step S404.
- Step S402 The switching device sets an identifier for the path in the domain, where the identifier may be an identifier of an existing pseudowire or the like, or may be a newly set virtual forwarding instance identifier.
- Step S404 After receiving the packet from a path, the switching device broadcasts the packet by using a path with a different identifier from the path. In this embodiment, an identifier is set for the path in the domain.
- the switching device broadcasts the packet by using a path different from the path of the received packet, so that the inbound and outgoing attributes are the same. Can be broadcast.
- the switching device can be a switch.
- the setting of the identifier for the path in the domain may include: the switching device generates the VPLS forwarding entry information corresponding to the path in the domain, and obtains the identifier corresponding to the VPLS forwarding entry information; The device determines whether the VPLS forwarding entry information exists in the forwarding table. If not, the switching device writes the VPLS forwarding entry information and its corresponding identifier into the forwarding table.
- the switching device generates the VPLS forwarding entry information, and obtains the identifier corresponding to the VPLS forwarding entry information, which may be implemented by: the master processing unit of the switching device generates the VPLS forwarding entry information and Obtaining an identifier corresponding to the VPLS forwarding entry information; or the main control processing unit of the switching device generates the VPLS forwarding entry information; then, sending the VPLS forwarding entry information to the line card of the switching device; and obtaining, by the line card, the VPLS forwarding entry information Logo.
- the obtaining the identifier corresponding to the VPLS forwarding entry information may include: the virtual forwarding instance identifier of the switching device, the VFI ID management module determining whether the VPLS forwarding entry information has a corresponding identifier; if yes, The VFI ID management module sends the corresponding identifier to the master processing unit or line card of the switching device. If not, the VFI ID management module allocates a corresponding identifier for the VPLS forwarding entry information, and sends the corresponding identifier to the master of the switching device. Control the processing unit or line card.
- the step S404 may include: after receiving the packet, the switching device searches for a path in the forwarding table that has a different identifier from a path; the broadcast device broadcasts the packet by using a path with a different identifier.
- the second embodiment of the present invention provides a packet blocking decision management method, which is used to prevent normal broadcast traffic from being discarded by the current device when the same broadcast attribute and the egress attribute are provided, thereby blocking normal broadcast packets. Forward. This example sets the instance sequence identifier of the VPLS service instance on the AC side and the PW side to identify different access lines on the AC side and different pseudo lines on the PW side, and write the hardware forwarding table synchronously.
- the data source and the data destination type AC or PW
- the instance sequence identifier corresponding to the data source entry and the sequence identifier in the egress direction are discarded. Otherwise, the packet is forwarded according to normal traffic.
- the instance sequence identifier is allocated based on the package information of the packet forwarding, and corresponds to the packet export encapsulation information. Different packet export encapsulation information is bound to different instance sequence identifiers.
- the traffic discarding or forwarding is determined by comparing the sequence identifier of the ingress instance with the sequence identifier of the egress direction, which solves the problem that the VPLS and the different accesses of the port cannot communicate with each other.
- the switch in this embodiment includes a plurality of main control processing units and line card boards.
- the VPLS instance sequence identifier is simply referred to as the VFI ID (Virtual Switch Instance Identifier).
- the implementation process of the embodiment is described by taking the implementation method of the distributed switch as an example. The implementation process includes the following steps: Step 1: The new VPLS forwarding entry information is generated on the master control, and the VFI ID allocation interface provided by the VFI ID management module is invoked.
- Step 2 The VFI ID management module determines whether the VFI ID needs to be allocated. If there is no VFI ID corresponding to the forwarding entry, the VFI ID is assigned, otherwise no processing is performed. The VFI ID module establishes a forwarding entry associated with the VFI ID to ensure that different forwarding entries correspond to different VFI IDs.
- Step 3 The master sends the forwarding entry synchronization information and the VFI ID to the line card driver. In step 4, the line card driver accepts the forwarding entry information and the VFI ID. Then judge whether the write driver is needed (write the information to the hardware forwarding table), and if so, complete the write drive process, otherwise go to step 5.
- Step 5 The forwarding information and the VFI ID are synchronized, and the forwarding entry synchronization process is exited.
- the release interface is called to reclaim the VFI ID.
- the BP and VFI ID collections are consistent with the deletion of the forwarding entries.
- the information about the forwarding entry generated by the master in the first step is as follows: The local instance generated by the VPLS instance and the protocol (for example, the LDP (Label Distribution Protocol)) is associated with the remote PW instance. The forwarding path.
- the VFI ID module needs to maintain the VFI ID table in Step 2.
- the VFI ID table is searched according to the forwarding entry keyword passed by the platform to determine whether the corresponding VFI ID value has been assigned to the entry.
- the VFI will be found.
- the ID is returned to the platform.
- the platform does not send the VFI ID to the line card.
- the line card After receiving the forwarding entry information, the line card checks the VFI ID table according to the keyword to obtain the VFI ID.
- the step 4 card VFI ID module can select whether to maintain the VFI ID table as needed.
- the line card driver in step 5 determines whether a write driver is required, and the write driver is determined to be synchronized according to the new forwarding entry on the master control and the forwarding entry triggered by the forwarding entry information update. In other cases, the write driver is not required.
- the line card of the centralized switch and the main control are combined, and the same function is completed by the same control unit.
- a method for performing traffic congestion decision management based on a global service instance sequence identifier is added on the basis of the existing domain segmentation processing broadcast packet mechanism, and the same characteristics of the entry attribute and the exit attribute are prevented. Normal broadcast traffic is dropped.
- the present embodiment performs the traffic discarding or forwarding decision of the broadcast packet by synchronizing the instance serial number comparison and the more complete packet traffic blocking decision mechanism.
- the problem of abnormally blocking broadcast packets caused by domain partitioning is solved on the basis of not changing the original domain partitioning mechanism to prevent the occurrence of broadcast storms, the hardware requirements are reduced, and the scalability of the VPLS network is improved.
- FIG. 5 is a flowchart of a method for VFI ID allocation and synchronization according to an embodiment of the present invention. As shown in FIG. 5, the flow includes steps S502 to S516. Step S502: A new forwarding entry is generated on the master due to the configuration or the protocol. The master calls the VFI ID allocation release interface provided by the master VFI ID module. In step S504, the VFI ID module determines whether the VFI ID already exists. If yes, the process proceeds to step S506, and if no, the process proceeds to step S508.
- Step S506 The VFI ID module searches the VFI ID table according to the forwarding entry information (the egress encapsulation attribute information corresponding to the forwarding path where the AC and the PW are located), and obtains the VFI ID that has been allocated by the forwarding entry.
- Step S508 the VFI ID module allocates a VFI ID for the forwarding entry, adds an allocated record, and establishes a correspondence table between the forwarding entry encapsulation information and the VFI ID.
- the master sends the forwarding entry synchronization information and the VFI ID to the line card.
- Steps S512 to S514 after the line card accepts the information sent by the master control, it is determined whether the forwarding entry information is successfully written, if yes, then the process goes to step S516, the driver is not written, and the write drive is successfully returned; if not, if it is a new entry If it is added, the forwarding information and the VFI ID information are written into the VPLS forwarding table. If the old entry information changes, the VPLS forwarding table is updated. In step S516, the return is successful. Note that the switch that supports the active/standby switchover function (not only the main control board but also the standby board) also needs to maintain the mapping table between the forwarding entry encapsulation information and the VFI ID.
- the forwarding entry identifies a certain situation (for example, if there is a PW pseudowire service with different PW IDs, such as a total of 16K and a fixed size), a fixed allocation mode may be selected (for example, selecting a 16K number as an instance identifier) A fixed mapping relationship is established with the PW ID.
- the instance sequence identifier resource is not recycled.
- FIG. 6 is a schematic diagram of a process of processing an AC-side broadcast message according to an embodiment of the present invention.
- the process includes steps S602 to S616.
- Step S602 the message enters the entry line card through the ingress port.
- Step S604 the ingress chip performs packet parsing, and obtains in port AC attribute information (including VLAN TAG attribute information).
- Step S606 Find a forwarding table, and obtain the port AC forwarding information and the VFI ID corresponding to the ingress port AC.
- the searched information is sent to the switching processing unit (it may be determined whether the switching processing unit is on the master or the line card according to different implementation mechanisms of the switch).
- step S608 the switching processing unit exchanges the VFI ID information and the outbound port forwarding attribute information corresponding to the port AC to the online card of the outbound port chip according to the outbound port AC forwarding information.
- Step S610 The outbound port chip obtains the VFI ID and the package information corresponding to the port AC according to the outbound port forwarding information lookup forwarding table.
- Step S612 the message blocking decision management module compares whether the VFI ID information corresponding to the ingress port AC and the VFI ID corresponding to the egress port are the same. If yes, proceed to step S614; otherwise, proceed to step S616. Step S614, discarding the traffic.
- Step S616 completing packet encapsulation according to the encapsulation information, and finally completing packet forwarding.
- FIG. 7 is a schematic diagram of a process of processing a PW side broadcast message according to an embodiment of the present invention.
- the process includes steps S702 to S716.
- Step S702 the message enters the entry line card through the ingress port.
- Step S704 the ingress chip performs packet parsing, and acquires inbound port PW attribute information.
- step S706 the forwarding table is searched, and the port PW forwarding attribute information and the VFI ID corresponding to the ingress port PW are obtained. And the obtained information is sent to the exchange processing unit (it may be determined whether the exchange processing unit is on the main control or the line card according to the implementation mechanism of the switch).
- step S708 the switching processing unit exchanges the VFI ID information and the outbound port forwarding attribute information corresponding to the inbound port PW to the online card of the outbound port chip according to the outbound port PW forwarding attribute information.
- Step S710 The outbound port chip searches the forwarding table according to the outbound port forwarding attribute information to obtain the VFI ID and the package information corresponding to the port PW.
- Step S712 the message blocking decision management module compares whether the VFI ID information corresponding to the ingress port PW and the VFI ID information corresponding to the egress port are the same. If yes, go to step S714; otherwise, go to step S716. Step S714, discarding the traffic.
- Step S716 the packet encapsulation is completed according to the encapsulation information, and finally, the PW side packet forwarding is completed.
- the packet blocking decision management method in this embodiment can be applied to the L2VPN service and other distributed and centralized switches blocked by the domain segmentation, and the packet forwarding information is matched with the service instance sequence identifier, and combined.
- the original packet broadcast decision mechanism can implement the packet broadcast described in this embodiment by comparing the inbound port instance sequence identifier with the outbound port instance sequence identifier to determine whether the packet is forwarded or discarded. On the basis of the embodiment, a corresponding transformation may be performed.
- a globally unique instance identifier may be selected for the multi-line card, or a local unique identifier for the single-line card may be selected; the identifier may be customized, or the service attribute association may be taken.
- the attribute identifier (such as PW ID, PW in label, etc.) is used as the instance identifier.
- the completion of the traffic blocking decision can be at the ingress chip or at the egress chip.
- Embodiment 4 This embodiment provides a broadcast apparatus for a message when the domain is divided, and the apparatus is used to implement the method described in the foregoing embodiment.
- the device may be a switching device such as a switch.
- FIG. 8 is a structural block diagram of a broadcast apparatus for a message when a domain is divided according to an embodiment of the present invention.
- the apparatus includes: a setting module 82 configured to set an identifier for a path in a domain; and a receiving module 84 coupled to the setting The module 82 is configured to receive a message from a path; the broadcast module 86, coupled to the receiving module 84, is configured to use a path broadcast message having a different identity than the path.
- FIG. 9 is a structural block diagram of a setting module according to an embodiment of the present invention. As shown in FIG.
- the setting module 82 includes: a generating submodule 92, configured to generate a virtual private local area network service VPLS forwarding entry letter corresponding to a path in the domain.
- the obtaining sub-module 94 is coupled to the generating sub-module 92, and configured to obtain an identifier corresponding to the VPLS forwarding entry information;
- the determining sub-module 96 is coupled to the obtaining sub-module 94, and configured to determine that there is no VPLS forwarding entry information in the forwarding table;
- the sub-module 98, coupled to the determining sub-module 96, is configured to write the VPLS forwarding entry information and identification to the forwarding table.
- the generating sub-module 92 and the obtaining sub-module 94 are located in a master processing unit of the switching device.
- the obtaining sub-module 94 is located in the main control processing unit of the switching device, the obtaining sub-module 94 is located in the line card of the switching device, and the obtaining sub-module 94 is configured to generate VPLS forwarding entry information.
- the main control processing unit is configured to send the VPLS forwarding entry information to the line card; the line card is configured to obtain an identifier corresponding to the VPLS forwarding entry information.
- the embodiment of the present invention implements a message blocking decision mechanism based on a service instance sequence, which eliminates the contradiction between the complex networking and the domain division scheme for preventing broadcast storms, and reduces the complexity of the message blocking decision mechanism.
- the hardware cost is reduced.
- the unified processing of board forwarding and cross-board forwarding improves the flexibility of chip forwarding.
- the computing device may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
- the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
- the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
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Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11847237.2A EP2651074A4 (en) | 2010-12-09 | 2011-09-19 | METHOD AND DEVICE FOR ROUNDING FROM DOMAIN DISTRIBUTION AND TIMELINE PACKAGES |
BR112013016555A BR112013016555A2 (pt) | 2010-12-09 | 2011-09-19 | método e dispositivo para transmitir pacote durante divisão de domínio |
Applications Claiming Priority (2)
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CN201010580696.1A CN102035659B (zh) | 2010-12-09 | 2010-12-09 | 域划分时报文的广播方法及装置 |
CN201010580696.1 | 2010-12-09 |
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WO2012075846A1 true WO2012075846A1 (zh) | 2012-06-14 |
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PCT/CN2011/079837 WO2012075846A1 (zh) | 2010-12-09 | 2011-09-19 | 域划分时报文的广播方法及装置 |
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EP (1) | EP2651074A4 (zh) |
CN (1) | CN102035659B (zh) |
BR (1) | BR112013016555A2 (zh) |
WO (1) | WO2012075846A1 (zh) |
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CN102035659B (zh) * | 2010-12-09 | 2015-04-01 | 中兴通讯股份有限公司 | 域划分时报文的广播方法及装置 |
JP6443925B2 (ja) * | 2015-03-20 | 2018-12-26 | 日本電気株式会社 | 制御装置、通信システム、制御方法、および、プログラム |
CN107528700B (zh) * | 2016-06-22 | 2021-08-17 | 中兴通讯股份有限公司 | 跨域边缘设备、分层vpls网络及其广播流量处理方法 |
CN109660594B (zh) * | 2018-11-07 | 2021-04-20 | 创新先进技术有限公司 | 业务处理结果的定向推送方法、展示方法、装置和设备 |
CN109495370B (zh) * | 2018-12-29 | 2020-11-24 | 瑞斯康达科技发展股份有限公司 | 一种基于vpls的报文传输方法及装置 |
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WO2008089370A1 (en) * | 2007-01-17 | 2008-07-24 | Nortel Networks Limited | Method and apparatus for interworking ethernet and mpls networks |
CN101420379A (zh) * | 2008-11-14 | 2009-04-29 | 北京航空航天大学 | 一种移动ad hoc网络低开销多路径路由方法 |
CN101789875A (zh) * | 2010-02-10 | 2010-07-28 | 华为技术有限公司 | 一种数据流转发的方法和装置、路由器 |
CN102035659A (zh) * | 2010-12-09 | 2011-04-27 | 中兴通讯股份有限公司 | 域划分时报文的广播方法及装置 |
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CN101146054B (zh) * | 2007-11-09 | 2012-04-18 | 杭州华三通信技术有限公司 | Pbt多点到多点模式中报文转发的方法及装置 |
CN101610216B (zh) * | 2009-07-29 | 2012-10-17 | 华为技术有限公司 | 以太网报文转发方法、装置及*** |
-
2010
- 2010-12-09 CN CN201010580696.1A patent/CN102035659B/zh not_active Expired - Fee Related
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2011
- 2011-09-19 BR BR112013016555A patent/BR112013016555A2/pt not_active Application Discontinuation
- 2011-09-19 WO PCT/CN2011/079837 patent/WO2012075846A1/zh unknown
- 2011-09-19 EP EP11847237.2A patent/EP2651074A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2008089370A1 (en) * | 2007-01-17 | 2008-07-24 | Nortel Networks Limited | Method and apparatus for interworking ethernet and mpls networks |
CN101420379A (zh) * | 2008-11-14 | 2009-04-29 | 北京航空航天大学 | 一种移动ad hoc网络低开销多路径路由方法 |
CN101789875A (zh) * | 2010-02-10 | 2010-07-28 | 华为技术有限公司 | 一种数据流转发的方法和装置、路由器 |
CN102035659A (zh) * | 2010-12-09 | 2011-04-27 | 中兴通讯股份有限公司 | 域划分时报文的广播方法及装置 |
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Publication number | Publication date |
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CN102035659A (zh) | 2011-04-27 |
BR112013016555A2 (pt) | 2016-09-27 |
EP2651074A1 (en) | 2013-10-16 |
CN102035659B (zh) | 2015-04-01 |
EP2651074A4 (en) | 2015-11-25 |
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