CN101931582A - Method and device for implementing Ethernet two-layer pseudo wire emulation service - Google Patents
Method and device for implementing Ethernet two-layer pseudo wire emulation service Download PDFInfo
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- CN101931582A CN101931582A CN2009101467496A CN200910146749A CN101931582A CN 101931582 A CN101931582 A CN 101931582A CN 2009101467496 A CN2009101467496 A CN 2009101467496A CN 200910146749 A CN200910146749 A CN 200910146749A CN 101931582 A CN101931582 A CN 101931582A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/68—Pseudowire emulation, e.g. IETF WG PWE3
Abstract
The invention discloses a device for implementing an Ethernet two-layer pseudo wire emulation service, which comprises a master control board exchange chip and an L2TPV3 data processing card. The master control board exchange chip is positioned in a broadband access equipment master control board and is used for receiving Ethernet pseudo wire service data transmitted by a user board and finishing the data message two-layer forwarding function of the Ethernet pseudo wire service data between the user board or an uplink board and the L2TPV3 data processing card; and the L2TPV3 data processing card is positioned in the broadband access equipment, occupies a physical slot position, is connected with an inline port of the master control board exchange chip through a media independent interface (MII), and is used for packaging and converting an L2TPV3-based Ethernet data message. The invention also discloses a corresponding method, which comprises steps of reserving VLAN identifier Ethernet pseudo wire service data, and correspondingly processing uplink or downlink data. The device and the method for implementing the Ethernet two-layer pseudo wire emulation service do not need to support extra software function characteristics, and implement the Ethernet two-layer pseudo wire emulation service on the broadband access equipment based on the L2TPV3.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and device of realizing the Ethernet two-layer pseudo wire emulation service.
Background technology
Edge-to-edge pseudo-line simulation is by the Internet engineering duty group (IETF, Internet Engineering Task Force) subordinate working group formulates, be used on the packet switching network (PSN, Packet Switch Network), providing the traditional ground floor and the technology of second layer Network.
The business model definition of pseudo wire emulation edge-to-edge business on PSN as shown in Figure 1, two fringe node (PE of provider of network edge, Provider Edge) is the customer edge nodes (CE that it connected, Customer Edge) provides one or more pseudo-line (PW, Pseudo Wire), making can be at the PSN network communication between the CE equipment.On a PSN tunnel (PSN TUNNEL) (not shown), contain many PW, can realize that two PW between the PE are multiplexing simultaneously.PSN network between the PE can be based on multiple label switching technology (MPLS, Multi-Protocol Label Switching) label exchange network also can be an IP network, if MPLS network, the user service data of CE is finished the PW encapsulation earlier after entering PE when then moving, stamping one deck vpn label by PE is the PW label, after stamping one deck outer layer label again and being tunnel label, send opposite end PE to.Opposite end PE carries out the decapsulation operation of data message, takes out vpn label and determines the outlet circuit, and the user service data that encapsulates is sent to CE; If the PSN network is an IP network, then can pass through Level 2 Tunnel Protocol version 3 (L2TPV3, Layer Two Tunneling Protocol Version 3) carries out transparent transmitting user data, the user service data of CE enters behind the PE load as the L2TPV3 data message during operation, message carries out the encapsulation of L2TPV3 agreement, carries out the sign of user's place in circuit by Session ID.No matter be to realize two-layer pseudo wire emulation service by MPLS technology or L2TPV3, the CE side joint is gone into circuit and had both been supported local area network (LAN) (LAN, Local Area Network) circuit also to support WAN wide area network (WAN, Wide Area Network) circuit.
At present, second layer pseudo wire emulation service is used on router or the switch device more, along with second layer Virtual Private Network (VPN, Virtual Private Network) Ye Wu continuous development, there has been the demand that realizes the Ethernet two-layer pseudo wire emulation service on broadband access equipment in many operators, are that the business datum of Ethernet encapsulated type is by the transparent purpose that is sent to far-end CE equipment of pure IP network to reach subscriber line circuit.
A kind of structure of typical broadband access equipment mainly comprises various types of veneers such as master control borad, user's plate, upper connective plate as shown in Figure 2.Wherein dissimilar user's plates is supported different broadband access methods, and for example digital subscriber line (DSL, Digital Subscriber Line) inserts, EPON (PON, Passive Optical Network) inserts or Ethernet inserts.Master control borad is the core of system, and all veneers are controlled and managed.The broadband access equipment of main flow all adopts two-stage exchanges data architecture at present, promptly on master control borad and user's plate, there is device respectively with function of exchange, as exchange chip, network processing unit, field programmable logic array (FPGA, Field Programmable Gate Array) etc.The upper united mouth of user's plate exchange device inline mouthful by exchange chip on Media Independent Interface (MII, Media Independent Interface) interface and the master control borad links to each other.User uplink data at first exchanges to the inline mouth of the exchange chip of master control borad by the exchange device on user's plate, on the master control borad exchange chip, carry out the secondary exchange again, finally the port on the upper connective plate sends from system, and the exchange of downlink data message is the inverse process of said process.
Realize that on broadband access equipment there is following difficult point in Ethernet two-layer VPN business:
1) exchange chip of most main flows is not supported the pseudo wire emulation function, only can carry out simple two layers or three layers of forwarding, and utilize network processing unit on user's plate or FPGA to realize that the scheme based on the pseudo wire emulation service of L2TPV3 will be very complicated, and, also there is the hardware version compatibility issue of valuing very much on the engineering to the performance of user's plate, the requirement that the resource proposition is difficult to accept;
2) after user data exchanges to the master control borad exchange chip, lost user's place in circuit information, thereby can't know whether the circuit that this user inserts is the pseudo-line service circuit, and can't determine that also the pseudo-line of purpose of place in circuit connects.
Summary of the invention
The technical problem to be solved in the present invention is can't be implemented in the prior art to realize the Ethernet two-layer pseudo wire emulation service in the broadband access equipment.
In order to address the above problem, the invention provides a kind of device of realizing the Ethernet two-layer pseudo wire emulation service, this device comprises: master control borad exchange chip and Level 2 Tunnel Protocol version 3 (L2TPV3) data processing card, wherein,
The master control borad exchange chip, be positioned at the broadband access equipment master control borad, be used to receive the Ethernet pseudo-line service data that user's plate sends, finish Ethernet pseudo-line service data two layers of forwarding capability of data message between user's plate or upper connective plate and L2TPV3 data processing card;
The L2TPV3 data processing card is arranged in broadband access equipment, and this card takies a physical slot position, links to each other with the inline mouth of master control borad exchange chip by Media Independent Interface (MII) interface; Be used for the Ethernet data message based on L2TPV3 is encapsulated conversion.
Described Ethernet pseudo-line service data are divided into ethernet port simulation type and the emulation of Ethernet Virtual Local Area Network.
Described L2TPV3 data processing card is provided with user's place in circuit attribute list and L2TPV3 data message table.
The present invention also provides a kind of method that realizes the Ethernet two-layer pseudo wire emulation service, and this method may further comprise the steps:
VLAN configuration data to user's plate access interface is handled, and adopts to keep VLAN sign Ethernet pseudo-line service data;
To the up direction data, Ethernet pseudo-line service data encapsulation is sent to master control borad to the L2TPV3 data message; To the down direction data, parsing L2TPV3 data message and interpolation keep VLAN and send to user's plate.
Described employing keeps VLAN sign Ethernet pseudo-line service data and is specially: for the subscriber line circuit of ethernet port emulation, distribute the transparent VLAN of a VLAN as subscriber line circuit from keep vlan list; Perhaps,
For the subscriber line circuit of ethernet vlan emulation, from keep vlan list, distribute the outside VLAN of a VLAN as subscriber line circuit.
In the said method, handle before up direction data or the down direction data, this method also is included in user's place in circuit attribute list and L2TPV3 data message table is set on the L2TPV3 data processing card.The data message processing procedure of described up direction specifically comprises:
The master control borad exchange chip is transmitted Ethernet pseudo-line service data to the L2TPV3 data processing card;
The L2TPV3 data processing card arrives the L2TPV3 data message with Ethernet pseudo-line service data encapsulation, and is sent to the master control borad exchange chip;
The master control borad exchange chip carries out two layers of exchange to the L2TPV3 data message that receives, and sends the L2TPV3 data message to upper connective plate;
Upper connective plate directly sends the L2TPV3 data message and goes out.
Described L2TPV3 data processing card to the L2TPV3 data message, when carrying out two layers of exchange, does not find Ethernet pseudo-line service data encapsulation if next jumps medium access control (MAC) address, L2TPV3 data processing card notice master control borad CPU.
The data message processing procedure of described down direction specifically comprises:
The master control borad exchange chip is judged the type of message of data message, if the L2TPV3 message then sends to the L2TPV3 data processing card with described data message, otherwise with described data message directly carry out two layers exchange or three layers exchange to user's plate;
The message that the identification of L2TPV3 data processing card is received, the acquisition cuicuit type;
If described circuit types is ethernet type then takes out payload from the L2TPV3 data message, send to the master control borad exchange chip after adding reservation VLAN, the master control borad exchange chip carries out two layers of exchange, sends to user's plate with adding the data message that keeps VLAN; If ethernet vlan type, then upgrade VLAN in the payload and be the VLAN in the subscriber line circuit sign, send to the master control borad exchange chip after adding reservation VLAN, the master control borad exchange chip carries out two layers of exchange, and the data message after upgrading is sent to user's plate.
The message that described L2TPV3 data processing card identification is received, the acquisition cuicuit type is specially:
The L2TPV3 data processing card obtains the Session ID in the message, local session identifier field with Session ID coupling L2TPV3 data message table, obtain virtual circuit ID, use virtual circuit ID inquiring user place in circuit attribute list again, obtain circuit types.
Compared with prior art, the invention provides a kind of method and apparatus of on broadband access equipment, realizing the Ethernet two-layer pseudo wire emulation service based on L2TPV3, support various dissimilar user's plates, user's plate is except requiring to support DSL forum technical (TR101, Technical Report) VLAN (VLAN of standard code, Virtual Local Area Network) function, be transparent VLAN, outside the VLAN conversion, do not need to support extra software function feature, more do not need hardware device is changed or upgraded, user's plate of different access styles has identical processing mode and behavior for the Ethernet two-layer pseudo wire emulation service.
Description of drawings
Fig. 1 is the pseudo-line service model schematic diagram on PSN;
Fig. 2 is the structural representation of existing broadband access equipment;
Fig. 3 is the device schematic diagram that the present invention realizes the Ethernet two-layer pseudo wire emulation service;
Fig. 4 is that L2TPV3 data processing card of the present invention is for Ethernet two-layer pseudo wire emulation service flow chart of data processing figure;
Fig. 5 is the data message process chart of up direction of the present invention;
Fig. 6 is the data message process chart of down direction of the present invention.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described in detail.
The device of realization Ethernet two-layer pseudo wire emulation service of the present invention as shown in Figure 3, this device comprises master control borad exchange chip and L2TPV3 data processing card, wherein,
The master control borad exchange chip, be positioned at the broadband access equipment master control borad, be used to receive the Ethernet pseudo-line service data that user's plate sends, finish Ethernet pseudo-line service data two layers of forwarding capability of data message between user's plate or upper connective plate and L2TPV3 data processing card;
The L2TPV3 data processing card is arranged in broadband access equipment, and this card takies a physical slot position, links to each other with the inline mouth of master control borad exchange chip by the MII interface; This L2TPV3 data processing card has network processing unit, is used for encapsulate the function of conversion based on the Ethernet data message of L2TPV3.
Before using said apparatus, on user's plate, the differentiation of finishing pseudo-line service data and other business datum is set by keeping VLAN, a reservation vlan list promptly is set is used for the Ethernet pseudo wire emulation service, the VLAN that keeps in the vlan list can either identify the pseudo-line service data, can distinguish different user's places in circuit again.The Ethernet two-layer pseudo wire emulation service is divided into two types:
1) ethernet port emulation, when certain user's place in circuit of configuration is the ethernet port artificial circuit, from the vlan list that keeps, distribute the transparent VLAN of a VLAN, and the inline mouth that the master control borad exchange chip links to each other with the L2TPV3 data processing card is added among this reservation VLAN as place in circuit;
2) ethernet vlan emulation, when certain user's place in circuit of configuration is the ethernet vlan artificial circuit, from the vlan list that keeps, distribute a VLAN as the outside VLAN that inserts the VLAN circuit, and the inline mouth that the master control borad exchange chip links to each other with the L2TPV3 data processing card is added among this reservation VLAN.
User's place in circuit attribute list and L2TPV3 data message table are set on the L2TPV3 data processing card.Preserve user's place in circuit relevant information in user's place in circuit attribute list, comprise subscriber line circuit sign, circuit types, reservation VLAN, virtual circuit ID etc.When certain bar subscriber line circuit of configuration is pseudo wire circuit, user's place in circuit attribute list is provided with.Comprise long-range Internet protocol (IP in the L2TPV3 data message table, Internet Protocol) address, local ip address, next jumping medium access control (MAC, Media Access Control) address, outlet VLAN, virtual circuit ID, remote session identifier, local session identifier, L2TP multichannel are decomposed the cookie information of sublayer etc.
L2TPV3 supports manual session and dynamic session dual mode, and when being configured to manual session, all pseudo-line relevant fields all are by local static configuration; When adopting dynamic session, the cookie information that remote session identifier, local session identifier, L2TP multichannel are decomposed the sublayer then obtains by local PE and long-range PE dynamic negotiation.
The L2TPV3 data processing card comprises following steps for Ethernet two-layer pseudo wire emulation service flow chart of data processing as shown in Figure 4:
Whether step 405, judgement receive message is L2TPV3 control message, if this message is sent to master control borad CPU handles; Otherwise, execution in step 406;
The present invention also provides the method for the realization Ethernet two-layer pseudo wire emulation service corresponding with said apparatus.
After the broadband access equipment initialization, configuring static route or dynamic routing protocol enable the L2TPV3 agreement, and broadband access equipment will be learnt all routing iinformations on the network.The reservation VLAN scope that is used for Ethernet two-layer pseudo wire business in the configuration-system, the parameters such as IP address of configuration ethernet two-layer pseudo wire service circuit and the virtual circuit ID on service circuit, far-end PE, system and far-end PE can be carried out the foundation of L2TPV3 tunnel and session, and reservation VLAN, the user's place in circuit attribute list in the L2TPV3 data processing card and the L2TPV3 data message table of user's plate Ethernet pseudo wire circuit are set.
VLAN configuration data to user's plate access interface is handled, and adopts to keep VLAN sign Ethernet pseudo-line service data, divides dual mode:
1) for subscriber line circuit with the emulation of big net port, from keep vlan list, distribute the transparent VLAN of a VLAN as subscriber line circuit, like this from subscriber line circuit come be tape label or the packet of tape label all can not add the reservation VLAN that distributes to this subscriber line circuit, thereby realize the transparent transmission of all data messages of subscriber line circuit.
2) for the subscriber line circuit of ethernet vlan emulation, from keep vlan list, distribute the outside VLAN of a VLAN as subscriber line circuit, promptly add the reservation VLAN that distributes to this subscriber line circuit for the packet of band specific markers by the VLAN switch technology, the data message forwarding flow process of other marks is constant.
The vlan information of Ethernet two-layer pseudo wire circuit is provided with the transparent VLAN or the outside VLAN of subscriber line circuit for creating pseudo-line order hair family plate at present.When all command configuration finish and the broadband access equipment agreement stable after, system just can transmit the data on the Ethernet two-layer pseudo wire service circuit.
The data message processing procedure of up direction as shown in Figure 5, comprises following steps:
The user data message enters user's plate, add-on system inside is used for the reservation VLAN of Ethernet pseudo-line service in Ethernet two-layer pseudo wire business datum, and the inline mouth that the master control borad exchange chip links to each other with the L2TPV3 data processing card is in keeping VLAN, and other business datums are normally transmitted.All data send to the master control borad exchange chip by two layers of exchange from the upper united mouth of user's plate after carrying out source MAC, VLAN study.
Step 502, master control borad exchange chip are transmitted Ethernet pseudo-line service data to the L2TPV3 data processing card.
After the master control borad exchange chip was received data message, application access control tabulation (ACL, Access Control List) rule was that the message of L2TPV3 is sent to the L2TPV3 data processing card with all types.
After the L2TPV3 data processing card receives the uplink message of master control borad exchange chip transmission, parse and keep VLAN, according to keeping VLAN inquiring user place in circuit attribute list, obtain virtual circuit ID, again with virtual circuit ID inquiry L2TPV3 data message table, obtain the IP address of opposite end PE, local ip address, next-hop MAC, outlet VLAN, remote session identifier and cookie information, encapsulation L2TPV3 data message, wherein, with remove to keep VLAN and verification and the Ethernet message be encapsulated in the payload of L2TPV3 data message, send L2TPV3 data message after the encapsulation then to the master control borad exchange chip.
Step 504, master control borad exchange chip carry out two layers of exchange to the L2TPV3 data message that receives, and send the L2TPV3 data message to upper connective plate.
In the step 503, if next-hop mac address does not find, the L2TPV3 data processing card then sends a message to master control borad CPU, transmits the L2TPV3 data message by master control borad CPU by software; Or master control borad CPU triggering address resolution protocol (ARP, Address Resolution Protocol) parsing next-hop mac address, the new MAC Address that parses is updated to L2TPV3 data message table.Master control borad CPU notice L2TPV3 data processing card L2TPV3 data message table upgrades, and the L2TPV3 data processing card is according to the encapsulation L2TPV3 data message after upgrading, and the L2TPV3 data message after will encapsulating sends to the master control borad exchange chip.
The data message processing procedure of down direction comprises following steps as shown in Figure 6:
The message that step 603, the identification of L2TPV3 data processing card are received is if the control message is handled this message up sending master control borad CPU; If L2TPV3 data message, then the L2TPV3 data processing card is discerned the message of receiving, specifically: obtain the Session ID in the message, local session identifier field with Session ID coupling L2TPV3 data message table, obtain virtual circuit ID, use virtual circuit ID inquiring user place in circuit attribute list again, obtain subscriber line circuit sign, circuit types, reservation VLAN.
In step 604, carry out two layers of exchange according to target MAC (Media Access Control) address and reservation VLAN on the master control borad exchange chip, in mac address table if target MAC (Media Access Control) address and reservation VLAN do not exist, then with data message inundation in VLAN; In the step 605, when user's plate carries out two layers of exchange, if target MAC (Media Access Control) address does not exist in mac address table, then with message inundation in VLAN.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. a device of realizing the Ethernet two-layer pseudo wire emulation service is characterized in that, this device comprises: master control borad exchange chip and Level 2 Tunnel Protocol version 3 (L2TPV3) data processing card, wherein,
The master control borad exchange chip, be positioned at the broadband access equipment master control borad, be used to receive the Ethernet pseudo-line service data that user's plate sends, finish Ethernet pseudo-line service data two layers of forwarding capability of data message between user's plate or upper connective plate and L2TPV3 data processing card;
The L2TPV3 data processing card is arranged in broadband access equipment, and this card takies a physical slot position, links to each other with the inline mouth of master control borad exchange chip by Media Independent Interface (MII) interface; Be used for the Ethernet data message based on L2TPV3 is encapsulated conversion.
2. the device of realization Ethernet two-layer pseudo wire emulation service as claimed in claim 1 is characterized in that: described Ethernet pseudo-line service data are divided into ethernet port simulation type and the emulation of Ethernet Virtual Local Area Network.
3. the device of realization Ethernet two-layer pseudo wire emulation service as claimed in claim 1 is characterized in that: described L2TPV3 data processing card is provided with user's place in circuit attribute list and L2TPV3 data message table.
4. method that realizes the Ethernet two-layer pseudo wire emulation service, it is characterized in that: this method may further comprise the steps:
VLAN configuration data to user's plate access interface is handled, and adopts to keep VLAN sign Ethernet pseudo-line service data;
To the up direction data, Ethernet pseudo-line service data encapsulation is sent to master control borad to the L2TPV3 data message; To the down direction data, parsing L2TPV3 data message and interpolation keep VLAN and send to user's plate.
5. the method for realization Ethernet two-layer pseudo wire emulation service as claimed in claim 4, it is characterized in that: described employing keeps VLAN sign Ethernet pseudo-line service data and is specially: for the subscriber line circuit of ethernet port emulation, distribute the transparent VLAN of a VLAN as subscriber line circuit from keep vlan list; Perhaps,
For the subscriber line circuit of ethernet vlan emulation, from keep vlan list, distribute the outside VLAN of a VLAN as subscriber line circuit.
6. the method for realization Ethernet two-layer pseudo wire emulation service as claimed in claim 4, it is characterized in that: handle before up direction data or the down direction data, this method also is included in user's place in circuit attribute list and L2TPV3 data message table is set on the L2TPV3 data processing card.
7. the method for realization Ethernet two-layer pseudo wire emulation service as claimed in claim 4 is characterized in that: the data message processing procedure of described up direction specifically comprises:
The master control borad exchange chip is transmitted Ethernet pseudo-line service data to the L2TPV3 data processing card;
The L2TPV3 data processing card arrives the L2TPV3 data message with Ethernet pseudo-line service data encapsulation, and is sent to the master control borad exchange chip;
The master control borad exchange chip carries out two layers of exchange to the L2TPV3 data message that receives, and sends the L2TPV3 data message to upper connective plate;
Upper connective plate directly sends the L2TPV3 data message and goes out.
8. the method for realization Ethernet two-layer pseudo wire emulation service as claimed in claim 7, it is characterized in that: described L2TPV3 data processing card arrives the L2TPV3 data message with Ethernet pseudo-line service data encapsulation, when carrying out two layers of exchange, if next is jumped medium access control (MAC) address and is not found, L2TPV3 data processing card notice master control borad CPU.
9. the method for realization Ethernet two-layer pseudo wire emulation service as claimed in claim 4 is characterized in that: the data message processing procedure of described down direction specifically comprises:
The master control borad exchange chip is judged the type of message of data message, if the L2TPV3 message then sends to the L2TPV3 data processing card with described data message, otherwise with described data message directly carry out two layers exchange or three layers exchange to user's plate;
The message that the identification of L2TPV3 data processing card is received, the acquisition cuicuit type;
If described circuit types is ethernet type then takes out payload from the L2TPV3 data message, send to the master control borad exchange chip after adding reservation VLAN, the master control borad exchange chip carries out two layers of exchange, sends to user's plate with adding the data message that keeps VLAN; If ethernet vlan type, then upgrade VLAN in the payload and be the VLAN in the subscriber line circuit sign, send to the master control borad exchange chip after adding reservation VLAN, the master control borad exchange chip carries out two layers of exchange, and the data message after upgrading is sent to user's plate.
10. the method for realization Ethernet two-layer pseudo wire emulation service as claimed in claim 9 is characterized in that, the message that described L2TPV3 data processing card identification is received, and the acquisition cuicuit type is specially:
The L2TPV3 data processing card obtains the Session ID in the message, local session identifier field with Session ID coupling L2TPV3 data message table, obtain virtual circuit ID, use virtual circuit ID inquiring user place in circuit attribute list again, obtain circuit types.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009101467496A CN101931582B (en) | 2009-06-24 | 2009-06-24 | Method and device for implementing Ethernet two-layer pseudo wire emulation service |
| PCT/CN2009/074789 WO2010145115A1 (en) | 2009-06-24 | 2009-11-04 | Device for performing ethernet two layers pseudo wire emulation service and method thereof |
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| CN2009101467496A CN101931582B (en) | 2009-06-24 | 2009-06-24 | Method and device for implementing Ethernet two-layer pseudo wire emulation service |
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| CN101931582A true CN101931582A (en) | 2010-12-29 |
| CN101931582B CN101931582B (en) | 2012-07-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064983A (en) * | 2010-12-31 | 2011-05-18 | 华为技术有限公司 | Method, device and system for detecting Ethernet networking connecting error |
| CN111683307A (en) * | 2020-05-22 | 2020-09-18 | 烽火通信科技股份有限公司 | Method and system for service access under OLT (optical line terminal) multi-stage exchange |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100488164C (en) * | 2005-09-22 | 2009-05-13 | 华为技术有限公司 | MSTP device and method for realizing pseudo wire emulation edge-to-edge business |
| CN100428739C (en) * | 2005-12-31 | 2008-10-22 | 华为技术有限公司 | Implementing method and system for support VPLS service on IP skeletal network |
| CN100555999C (en) * | 2007-08-13 | 2009-10-28 | 中兴通讯股份有限公司 | A kind of method and apparatus of realizing edge-to-edge pseudo-line simulation |
-
2009
- 2009-06-24 CN CN2009101467496A patent/CN101931582B/en not_active Expired - Fee Related
- 2009-11-04 WO PCT/CN2009/074789 patent/WO2010145115A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064983A (en) * | 2010-12-31 | 2011-05-18 | 华为技术有限公司 | Method, device and system for detecting Ethernet networking connecting error |
| CN102064983B (en) * | 2010-12-31 | 2013-03-20 | 华为技术有限公司 | Method, device and system for detecting Ethernet networking connecting error |
| CN111683307A (en) * | 2020-05-22 | 2020-09-18 | 烽火通信科技股份有限公司 | Method and system for service access under OLT (optical line terminal) multi-stage exchange |
| CN111683307B (en) * | 2020-05-22 | 2022-05-20 | 烽火通信科技股份有限公司 | Method and system for accessing service under OLT (optical line terminal) multi-stage exchange |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101931582B (en) | 2012-07-18 |
| WO2010145115A1 (en) | 2010-12-23 |
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