[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

WO2009012688A1 - Procédé, système et appareil de réacheminement de message dans un réseau privé virtuel à trois couches - Google Patents

Procédé, système et appareil de réacheminement de message dans un réseau privé virtuel à trois couches Download PDF

Info

Publication number
WO2009012688A1
WO2009012688A1 PCT/CN2008/071596 CN2008071596W WO2009012688A1 WO 2009012688 A1 WO2009012688 A1 WO 2009012688A1 CN 2008071596 W CN2008071596 W CN 2008071596W WO 2009012688 A1 WO2009012688 A1 WO 2009012688A1
Authority
WO
WIPO (PCT)
Prior art keywords
packet
label
outer label
compression
virtual line
Prior art date
Application number
PCT/CN2008/071596
Other languages
English (en)
Chinese (zh)
Inventor
Peng Ma
Kang Zi
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009012688A1 publication Critical patent/WO2009012688A1/fr

Links

Classifications

    • 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
    • H04L2212/00—Encapsulation of packets

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, system and device for forwarding a message by a three-layer virtual private network. Background technique
  • the format is shown in Figure 1.
  • the voice data generated by the voice encoder is layer-by-layer encapsulated into RTP, UDP (User Datagram Protocol) and IP (Internet Protocol), so that the length of the voice frame header reaches 40 bytes, but The payload is only 15 to 30 bytes.
  • RTP Resource Transfer Protocol
  • UDP User Datagram Protocol
  • IP Internet Protocol
  • cRTP Compressed Real-time Transport Protocol
  • CRTP can compress three headers of IP, UDP and RTP from 40 bytes to 2 ⁇ 4 bytes. For RTP packets with a payload of only 15 to 30 bytes, the redundancy of the packets is greatly reduced, and the bandwidth utilization is improved.
  • the Context Context Information
  • CID Context Identification
  • the decompression terminal will not be able to decompress and update the context information correctly, so it is necessary to provide a mechanism to monitor the context error and fix the error.
  • cRTP can send C0NTEXT_STATE (Context Update Request) to fix the context, but the round-trip time on the link can affect the efficiency of this repair mechanism.
  • EcRTP Enhanced cRTP, Enhanced Compressed Real-Time Transport Protocol
  • EcRTP mainly enhances the robustness of cRTP to link quality by updating the session environment to the decompression end.
  • the specific enhancements are mainly reflected in the following three aspects:
  • the compressed end periodically sends the extended C0MPRESSED_UDP packet, and the extended C0MPRESSED_UDP packet carries more header change information, for example, carrying an absolute value instead of a change value, to refresh the context information of the decompressed end, and avoiding the two-end context out of synchronization.
  • the compression end continuously sends N+1 synchronization packets to avoid context loss caused by synchronization packet loss.
  • Lbel Switch, Multiprotocol Label Switching Technology that supports cRTP on the tunnel - cRTP over MPLS.
  • An MPLS tunnel between two PEs (Provider Edges) in a cRTP over MPLS network simulates a point-to-point link between two connected devices.
  • the P device (operator non-boundary device) in the MPLS network does not need to participate in the compression/decompression process. It only needs to compress the PE at the MPLS tunnel entrance and decompress the egress PE, which improves the processing capability of the entire network.
  • cRTP is a value-added service. It is highly probable that the user-built bearer network does not support cRTP, and it is impossible to redeploy the network for this service. Therefore, end-to-end compression is required, so that the intermediate node does not perceive the compression service, so that the user only needs to deploy the corresponding device at the edge node to complete the entire compression service, which is economical and practical.
  • the above-mentioned cRTP over MPLS technology uses PWE 3 (Pseudo-Wire Emulation Edge to Edge) as the carrier of the cRTP, and the SPcRTP tunnel, in which the PWE3 control word carries information such as the packet type and length to distinguish the compressed message.
  • PWE 3 Pulseudo-Wire Emulation Edge to Edge
  • the type of the CRTP over MPLS packet has two layers of MPLS labels. The outer label is used to specify the forwarding path, and the inner label is used to identify the PW (Pseudo Wire).
  • PWE3 can simulate telecommunication services on the Packet Switched Network (PSN), such as T1 leased line, FR (Frame Relay), etc.
  • PSN Packet Switched Network
  • FR Frame Relay
  • PWE3 is biased to provide only minimum and necessary
  • PWE3's pseudo-wired PW functions include: encapsulation of ingress ports for cells, PDUs (Protocol Data Units), or specific service bitstreams, and carrying them over IP or MPLS channels for transmission. In some cases, other operations, such as timing management, simulation of limited features and features of the service, are required.
  • PW To simulate raw business behavior and features, PW provides the following features:
  • PE1 and PE2 In order for CE (Custom Edge) to communicate on the PSN network, two PE devices (PE1 and PE2) need to provide one or more PW pseudowires. Establish a PSN channel to establish a data channel. For the core network, PW traffic is invisible, and for CE devices, the core network is also transparent.
  • the CE1 transmits the original data (such as the bit, the cell, the data packet, and the like) to the PE1 through the AC (Attached Circuit).
  • the packet is encapsulated in the PW-PDU format and then transmitted through the lower PSN network.
  • the peer PE2 is decapsulated by the PE2, and the decapsulated packet is sent to the destination device CE2 through the AC.
  • the function of the PE device includes sorting or timing the packet, and any other functions required by the PW pseudowire technology.
  • PWE3 provides an end-to-end service, that is, a message transmitted from an AC.
  • end-to-end service that is, a message transmitted from an AC.
  • IP routing such as HC (Header Compression). Compressed
  • a VPN bound to an AC interface on the L3VPN (Layer 3 Virtual Private Network) can establish a session with the same VPN on multiple remote PEs. It can be mapped to different PWs as required. Multiple PWs are set up on each AC interface. This type of extension will increase the number of PWs, resulting in serious waste of system resources.
  • the specifications of the system support L3VPN compression sessions and Scalability will have an impact. Summary of the invention
  • the embodiment of the present invention provides a method, system and device for forwarding a packet by a three-layer virtual private network.
  • the technical solution is as follows:
  • a method for forwarding a packet by a three-layer virtual private network includes:
  • the encapsulated packet Receiving, by the virtual line, the encapsulated packet, the encapsulated packet having an inner label and an outer label, and according to the outer label of the encapsulated packet, when the outer label can be popped up, The outer label is popped up, and the packet after the outer label is popped is sent.
  • the embodiment of the present invention further provides a system for forwarding a packet by a three-layer virtual private network, where the system includes: a compression device, at least one intermediate device, and a decompression device;
  • the compression device is configured to receive the packet, and compress the packet according to the compression protocol, and encapsulate the inner label and the outer label according to the virtual line double-layer label stack, and the virtual line corresponding to the packet Forwarding encapsulated report Text
  • the intermediate device is configured to receive the packet forwarded by the compression device, and when the outer label is popped up, the outer label is popped up, and the packet after the outer label is popped up;
  • the decompression device is configured to receive the packet forwarded by the intermediate device, decompress the packet according to the compression protocol, and send the decompressed packet to the corresponding destination device.
  • the embodiment of the invention provides a compression device, and the device includes:
  • a receiving module configured to receive a message
  • a packet processing module configured to compress, according to a compression protocol, a packet received by the receiving module, and encapsulate an inner label and an outer label according to the virtual line double-layer label stack as the compressed packet;
  • An embodiment of the present invention provides an intermediate device, where the device includes:
  • a receiving module configured to receive a packet forwarded by the compression device
  • a forwarding module configured to: according to the packet received by the receiving module, when the outer label is popped up, the outer label is popped, and the packet after the outer label is popped up.
  • the embodiment of the invention provides a decompression device, and the device includes:
  • a receiving module configured to receive a packet forwarded by the intermediate device
  • a decompression module configured to search, for the inner label of the packet received by the receiving module, corresponding decompressed virtual line session information; and obtain compression protocol information from the virtual line session information, according to the compression protocol information The message is decompressed;
  • a sending module configured to send the decompressed packet to the corresponding destination device.
  • the embodiment of the present invention reduces the number of sessions required for establishing a point-to-point compression session of the L3VPN traffic, prevents system resources from being wasted, and has good scalability.
  • FIG. 1 is a schematic diagram of a package format of an RTP packet provided by the prior art
  • FIG. 2 is a schematic diagram of a PWE3 network model provided by the prior art
  • FIG. 3 is a schematic diagram of an L3VPN point-to-multipoint networking provided by the prior art
  • Embodiment 4 is a schematic diagram of a L3VPN point-to-multipoint networking provided by Embodiment 1 of the present invention.
  • FIG. 5 is a flowchart of a method for forwarding a packet by a three-layer virtual private network according to Embodiment 1 of the present invention
  • FIG. 6 is a schematic diagram of a system for forwarding a message by a three-layer virtual private network according to Embodiment 2 of the present invention
  • 7 is a schematic diagram of a compression device according to Embodiment 3 of the present invention
  • FIG. 8 is a schematic diagram of a decompression device according to Embodiment 4 of the present invention.
  • FIG. 9 is a schematic diagram of an intermediate device provided by the embodiment 5. detailed description
  • the PW tunnel established on the backbone network and the metropolitan area network maps the traffic of the L3VPN to the corresponding PW tunnel to establish a point-to-point compression session, which saves network resources and is simple to implement.
  • the embodiment of the invention provides a method for forwarding a packet by a three-layer virtual private network, including:
  • the encapsulated packet is received by the virtual line, and the encapsulated packet has an inner label and an outer label. According to the outer label of the encapsulated packet, when the outer label can be ejected, the outer label is popped up, and Send the packet after the outer label is ejected.
  • the method is specifically: after receiving the packet, the compression end compresses the packet according to the compression protocol, and encapsulates the inner label and the outer label according to the virtual line double-layer label stack, and encapsulates the inner label and the outer label.
  • the packet is forwarded from the PW corresponding to the packet to the intermediate device; accordingly,
  • the intermediate device receives the encapsulated packet, and determines whether the outer label is ejected according to the outer label of the packet. If yes, the outer label is ejected, and the packet with the outer label is ejected to the decompressed end; The outer label of the text, forwarded to the next intermediate device;
  • the decompressing device After receiving the packet, the decompressing device decompresses the packet according to the compression protocol, and sends the decompressed packet to the corresponding destination device.
  • the embodiment of the present invention provides a network diagram of the L3VPN point-to-multipoint network, where the network includes the CE1 of the user end.
  • a router, a CE2 router, a compressed PE router, a decompressing PE router, and multiple P routers in the backbone network for example, the CE 1 router in Figure 4 sends a packet to the CE2 router as an example. See Figure 5, the above three layers of virtual
  • the method for forwarding packets by the private network includes:
  • the above compression protocol includes compression parameters corresponding to the protocol.
  • the PW can be configured globally or based on interfaces, virtual interfaces, and tunnel interfaces.
  • the PW can also be virtualized out of the tunnel interface.
  • the PW ID can be one of the router interface number, the virtual interface number, the tunnel interface number, or the virtual circuit ID vc-id.
  • the interface number can be used as the PW identifier, or the interface number plus vc-id can be used as the PW identifier. Bind the configured packet compression protocol and PW identifier together.
  • the PE router After receiving the L3VPN packet from the CE1 router, the PE router obtains the corresponding VPN information according to the CE interface, that is, the VPN to which the packet belongs.
  • the CE interface refers to the interface that receives the packet.
  • 103 Find a VPN FIB (Forwarding Information Base) table corresponding to the packet according to the obtained VPN information, and obtain a BGP (Border Gating Protocol) nexthop (next hop address).
  • VPN FIB Forwarding Information Base
  • BGP Border Gating Protocol
  • the FIB table is used to store valid routing information. It is the premise and basis of the packet forwarding.
  • the FIB entry includes the destination address of the packet, nexth 0 p, outgoing interface, and forwarding identifier.
  • the index information of the public network tunnel forwarding table is obtained by checking the FIB table.
  • the peer and VPN information corresponding to the PW is obtained, and the PW corresponding to the PW is obtained, and the session information of the PW is obtained, that is, the correspondence from the Layer 3 VPN to the Layer 2 VPN is found.
  • the session information is a two-layer outgoing label corresponding to the PW, and a compression protocol and compression parameter information.
  • the index and token information of the public network tunnel corresponding to the PW are found according to the public network tunnel index token and VPN information.
  • the PW double-layer label stack and the compression protocol are obtained from the found PW session information, and the compression parameters corresponding to the compression protocol are compressed according to the compression protocol and the compression parameter, according to the PW double-layer label stack.
  • the message is encapsulated.
  • the encapsulated packet carries the PW control word field of the compressed session identifier ID.
  • the specifically encapsulated packet type and padding content are determined by a specific compression protocol.
  • the compression protocol may adopt the cRTP protocol or the EcRTP protocol, or may be IPHC ( Internet Protocol Header Compression, IP Header Compression, or R0HC (Root Header Compression).
  • the PE router on the compressed end sends the packet to the backbone network.
  • the P router on the backbone network exchanges the PW outer label and forwards the packet.
  • the PE router on the compressed end sends the packet to the backbone network.
  • the P router on the backbone network exchanges the PW outer label. If the P router on the backbone network is the penultimate hop router, the outer label is ejected. Forwards the packet containing only the inner PW label to the decompressing PE router. Wherein, the P router can be based on the MPLS LSP of the router.
  • the outer label in the forwarding table determines whether it is the penultimate hop router. If the outer label is 3, it is the penultimate hop router.
  • the PE router After the packet is received, the PE router checks the label mapping table according to the inner PW label to obtain the PW identifier.
  • the PW session is used to search for the decompressed PW session information corresponding to the packet, and the corresponding compression protocol is obtained.
  • the packet is decompressed according to the compression protocol, and the original L3VPN packet is restored.
  • the foregoing method may further include:
  • the decompression end fails to be decompressed, or if the compression side needs to compress the session information synchronously, it needs to send the backhaul message to the compression end. Since the PW is established in both directions, only the double-layer tunnel on the public network side of the PW is decompressed. The backhaul packet is sent back to the compression end. The forwarding process of the return packet is similar to the above process, and will not be described in detail here.
  • the method for forwarding a packet by the three-layer virtual private network reduces the number of sessions required for establishing a point-to-point compression session for the L3VPN traffic by using the PW of the L2VPN to forward the compressed packet. Prevent system resources from being wasted and have good scalability.
  • Example 2
  • the embodiment provides a system for forwarding a packet by a three-layer virtual private network, including: a compression device 201, at least one intermediate device 202, and a decompression device 203 , where
  • the compression device 201 is configured to receive the packet, and compress the packet according to the compression protocol, and encapsulate the inner label and the outer label according to the virtual line double-layer label stack, and forward the virtual line corresponding to the packet.
  • the encapsulated packet; the intermediate device 202 is configured to receive the packet forwarded by the compression device 201, and according to the outer label of the packet, when the outer label is popped, the packet after the outer label is ejected is forwarded;
  • the decompression device 203 is configured to receive the packet forwarded by the intermediate device 202, decompress the packet according to the compression protocol, and send the decompressed packet to the corresponding destination device.
  • the foregoing intermediate device 201 is further configured to: when the outer label is not popped up, replace the outer label of the packet, and forward the packet after replacing the outer label to the next intermediate device.
  • the system for forwarding packets by the Layer 3 virtual private network provided by the embodiment of the present invention reduces the number of sessions required for establishing a point-to-point compression session by using L2VPN PW to forward compressed packets, thereby preventing waste of system resources. And has good scalability.
  • Example 3
  • this embodiment provides a compression device, including:
  • the receiving module 301 is configured to receive a packet.
  • the packet processing module 302 is configured to compress the packet received by the receiving module 301 according to the compression protocol, and encapsulate the inner label and the outer label according to the compressed double-layer label stack.
  • the sending module 303 is configured to forward the packet encapsulated by the packet processing module 302 from the virtual line corresponding to the packet.
  • the message processing module 302 includes:
  • the session information obtaining unit 302a is configured to obtain the virtual private network information corresponding to the packet according to the interface that the receiving module 301 receives the packet, and search the forwarding information base according to the virtual private network information to obtain the next hop address of the border gateway protocol of the packet. Finding virtual line session information corresponding to the message according to the next hop address and the virtual private network information;
  • the compression and encapsulation unit 302b is configured to obtain a virtual line double-layer label stack and a compression protocol from the virtual line session information acquired by the session information acquiring unit 302a; compress the message according to the compression protocol, according to the virtual line double-layer label stack The compressed message encapsulates the inner and outer labels.
  • Example 4
  • the embodiment provides a decompression device, including:
  • the receiving module 401 is configured to receive a packet forwarded by the intermediate device.
  • the decompression module 402 is configured to search for the corresponding decompressed virtual line session information of the inner label of the packet received by the receiving module 401 according to the compression protocol; obtain compression protocol information from the virtual line session information, and report the information according to the compression protocol information. Decompress the text;
  • the sending module 403 is configured to send the decompressed packet of the decompression module 402 to the corresponding destination device.
  • the specific implementation may be: searching the virtual private network forwarding information base according to the virtual private network information of the PW, and then sending the obtained forwarding information to the corresponding destination device.
  • this embodiment provides an intermediate device, where the intermediate device includes:
  • the receiving module 501 is configured to receive a packet forwarded by the compression device.
  • the forwarding module 502 is configured to: according to the packet received by the receiving module 501, when the outer label is popped up, the outer label is popped, and the packet after the outer label is ejected is forwarded.
  • the intermediate device provided in this embodiment further includes:
  • the processing module 503 is configured to: according to the packet received by the receiving module, replace the packet when the outer label is not The outer label, and forwards the message after replacing the outer label to the next intermediate device.
  • the foregoing embodiment maps the L3VPN traffic to the PW of the L2VPN to establish a compression session, which is simpler than the negotiation of the BGP protocol packet of the L3VPN, and reduces the number of sessions required to establish a point-to-point compression session for the L3VPN traffic. , to prevent the waste of system resources, and has good scalability.
  • the PW can be set up in the global mode or on the interface or the virtual interface.
  • the PW can be used as the identifier of the PW tunnel.
  • the embodiments of the present invention can be implemented in software, and the corresponding software can be stored on a readable storage medium such as a hard disk, a memory or an optical disk of a computer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un procédé, un système et un appareil de réacheminement de message dans un réseau privé virtuel à trois couches, qui appartient à un champ de communication. Le procédé se compose des étapes suivantes : la réception du message encapsulé à travers une ligne virtuelle. Le message encapsulé comporte une étiquette de couche interne et une de couche externe. Selon l'étiquette de couche externe du message encapsulé, lorsque l'étiquette de couche externe peut être éjectée, elle l'est, et le message qui a éjecté l'étiquette de couche externe est envoyé. Le système comprend un dispositif de compression, un dispositif intermédiaire et un dispositif de décompression. Le dispositif de compression se compose d'un module de réception, d'un module de traitement de message et d'un module d'envoi. Le dispositif intermédiaire se compose d'un module de réception et d'un module de réacheminement. Le dispositif de décompression se compose d'un module de réception, d'un module de décompression et d'un module d'envoi. Il peut empêcher la perte de ressources système en faisant suivre le message comprimé utilisant le PW de L2VPN.
PCT/CN2008/071596 2007-07-20 2008-07-09 Procédé, système et appareil de réacheminement de message dans un réseau privé virtuel à trois couches WO2009012688A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710129942.X 2007-07-20
CNB200710129942XA CN100558072C (zh) 2007-07-20 2007-07-20 三层虚拟专用网转发报文的方法、系统和设备

Publications (1)

Publication Number Publication Date
WO2009012688A1 true WO2009012688A1 (fr) 2009-01-29

Family

ID=38976764

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/071596 WO2009012688A1 (fr) 2007-07-20 2008-07-09 Procédé, système et appareil de réacheminement de message dans un réseau privé virtuel à trois couches

Country Status (2)

Country Link
CN (1) CN100558072C (fr)
WO (1) WO2009012688A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103236950A (zh) * 2013-05-10 2013-08-07 烽火通信科技股份有限公司 用于l3vpn的业务管理装置
US20180006842A1 (en) * 2015-01-29 2018-01-04 Hewlett Packard Enterprise Development Lp Access Layer-2 Virtual Private Network From Layer-3 Virtual Private Network
WO2020052410A1 (fr) * 2018-09-15 2020-03-19 华为技术有限公司 Procédé, dispositif et système de communication
CN111740906A (zh) * 2020-05-20 2020-10-02 新华三技术有限公司 一种报文的处理方法和处理装置

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100558072C (zh) * 2007-07-20 2009-11-04 华为技术有限公司 三层虚拟专用网转发报文的方法、系统和设备
CN101651610A (zh) * 2008-08-13 2010-02-17 华为技术有限公司 在网络中传输报文的方法、装置和接收报文的方法、装置
CN101409683B (zh) * 2008-11-25 2011-03-30 清华大学 基于三层软交换的高性能用户三层准入控制方法
CN101442777B (zh) * 2008-12-31 2011-04-13 华为技术有限公司 一种压缩复用报文处理方法及装置
CN101510845B (zh) * 2009-03-27 2012-10-10 北京星网锐捷网络技术有限公司 一种标签转发方法和装置
CN101605355B (zh) * 2009-06-12 2011-08-24 中国科学技术大学 一种用于LTE-advanced网络中继节点上的ROHC混合工作方式
US9674311B2 (en) 2009-08-14 2017-06-06 Qualcomm Incorporated Robust header compression for relay nodes
CN101729411B (zh) * 2009-11-05 2012-06-06 中兴通讯股份有限公司 一种基于pwe3业务的数据传输方法和系统
CN101714937B (zh) * 2009-11-16 2013-08-07 中兴通讯股份有限公司 一种端到端伪线仿真接入的装置和方法
CN102201964B (zh) * 2010-03-22 2014-02-05 杭州华三通信技术有限公司 一种实现快速路径切换的方法和装置
CN102420672A (zh) * 2011-01-25 2012-04-18 苏州汉明科技有限公司 无线局域网无线接入点向无线控制器进行数据转发的方法
CN103457817B (zh) * 2012-05-30 2018-03-16 中兴通讯股份有限公司 一种pw+l3vpn的保护方法和系统
CN103746930B (zh) * 2014-01-14 2017-09-19 重庆金美通信有限责任公司 一种窄带串行链路tcp报文头部压缩的改进方法
CN104243264B (zh) * 2014-09-03 2017-11-07 烽火通信科技股份有限公司 伪线pw采用n:1模型接入l3vpn的系统及方法
CN109818901B (zh) * 2017-11-20 2021-04-20 华为技术有限公司 报文头压缩机制确定方法、设备及系统
CN108718276B (zh) * 2018-04-10 2021-04-27 新华三技术有限公司 一种报文转发方法和装置
CN112995039A (zh) * 2021-03-05 2021-06-18 迈普通信技术股份有限公司 报文处理方法及系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1471282A (zh) * 2002-07-24 2004-01-28 华为技术有限公司 一种基于多协议标签交换网络的报文传送方法
CN1863162A (zh) * 2005-12-23 2006-11-15 华为技术有限公司 一种直连网段路由处理方法及装置
CN101075937A (zh) * 2007-07-20 2007-11-21 华为技术有限公司 三层虚拟专用网转发报文的方法、系统和设备

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1471282A (zh) * 2002-07-24 2004-01-28 华为技术有限公司 一种基于多协议标签交换网络的报文传送方法
CN1863162A (zh) * 2005-12-23 2006-11-15 华为技术有限公司 一种直连网段路由处理方法及装置
CN101075937A (zh) * 2007-07-20 2007-11-21 华为技术有限公司 三层虚拟专用网转发报文的方法、系统和设备

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103236950A (zh) * 2013-05-10 2013-08-07 烽火通信科技股份有限公司 用于l3vpn的业务管理装置
CN103236950B (zh) * 2013-05-10 2015-12-02 烽火通信科技股份有限公司 用于l3vpn的业务管理装置
US20180006842A1 (en) * 2015-01-29 2018-01-04 Hewlett Packard Enterprise Development Lp Access Layer-2 Virtual Private Network From Layer-3 Virtual Private Network
US10505759B2 (en) * 2015-01-29 2019-12-10 Hewlett Packard Enterprise Development Lp Access layer-2 virtual private network from layer-3 virtual private network
WO2020052410A1 (fr) * 2018-09-15 2020-03-19 华为技术有限公司 Procédé, dispositif et système de communication
US11895006B2 (en) 2018-09-15 2024-02-06 Huawei Technologies Co., Ltd. Communication method, device, and system
CN111740906A (zh) * 2020-05-20 2020-10-02 新华三技术有限公司 一种报文的处理方法和处理装置

Also Published As

Publication number Publication date
CN101075937A (zh) 2007-11-21
CN100558072C (zh) 2009-11-04

Similar Documents

Publication Publication Date Title
WO2009012688A1 (fr) Procédé, système et appareil de réacheminement de message dans un réseau privé virtuel à trois couches
CN109218178B (zh) 一种报文处理方法及网络设备
US8351352B1 (en) Methods and apparatus for RBridge hop-by-hop compression and frame aggregation
US8681805B2 (en) Method, device and system for interconnecting a multi-protocol label switching network and an ethernet
JP6032278B2 (ja) Ｌａｎ多重化装置
US8472438B2 (en) Efficient encapsulation of packets transmitted on a packet-pseudowire over a packet switched network
US7782841B2 (en) Method and system for transporting data using pseudowire circuits over a bridged network
CN102045242B (zh) 网络通信方法和网络节点设备
CN101286922B (zh) 一种信令控制的方法、系统及设备
WO2008092357A1 (fr) Procédé et dispositif pour établir un tunnel pseudocâblé et transmettre un message à l'aide de celui-ci
CN101110745A (zh) 衔接二层网络和三层网络的方法、装置和系统
WO2005055548A1 (fr) Procede de mise en oeuvre du protocole d'emulation de pseudo-circuits entre routeurs peripheriques
CN102413060B (zh) Vpls网络中用户专线通信方法及设备
EP3133797B1 (fr) Procédé de transfert de message, système et dispositif d'agent de relais
AU2011244044A1 (en) Efficient encapsulation of packets transmitted on a packet-pseudowire over a Packet Switched Network
WO2007076678A1 (fr) Procede de transfert de donnees et appareil de commutation
WO2009021371A1 (fr) Procédé et dispositif permettant de réaliser une émulation pseudo-filaire de bout en bout
KR101140453B1 (ko) Ｉｐ 인터워킹 ｖｌｌ을 통한 회로 에뮬레이션 방법 및 시스템
CN112583718B (zh) 一种SRoU场景下SRv6报文传递方法、系统、设备及介质
WO2021093463A1 (fr) Procédé de transfert de paquets, premier dispositif de réseau et premier groupe de dispositifs
WO2021164245A1 (fr) Procédé de partage de charge et premier dispositif de réseau
WO2011057520A1 (fr) Appareil et procédé pour accès bordure à bordure par émulation de pseudo-câble
WO2008028383A1 (fr) Procédé d'identification de protocole de couche 3 dans une interconnexion à supports hétérogènes dans un réseau privé virtuel de protocole l2 et appareil et système correspondants
WO2008034365A1 (fr) Procédés, système et dispositifs de transmission de datagramme ipv6 sur ethernet
WO2021129023A1 (fr) Procédé, dispositif et système d'envoi de message

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08773150

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08773150

Country of ref document: EP

Kind code of ref document: A1