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Communication method and device for NVO3 (network virtualization over layer 3) network and MPLS (multi-protocol label switching) network

A network, three-layer network technology, applied in the field of communication

Active Publication Date: 2015-04-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the two AS domains that communicate with each other need to deploy MPLS networks, the OPTION C method can only realize the interconnection between MPLS VPN homogeneous networks.

Method used

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  • Communication method and device for NVO3 (network virtualization over layer 3) network and MPLS (multi-protocol label switching) network
  • Communication method and device for NVO3 (network virtualization over layer 3) network and MPLS (multi-protocol label switching) network
  • Communication method and device for NVO3 (network virtualization over layer 3) network and MPLS (multi-protocol label switching) network

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0061] Please refer to figure 1 , the embodiment of the present invention provides a method for realizing the communication between the NVO3 network and the MPLS network, the method is used for the communication between the NVO3 network and the MPLS network, the NVO3 network is deployed in the first autonomous system (the first AS, AS1), The MPLS network is deployed in a second autonomous system (the second AS, AS2); the method may include:

[0062] 110. The ASBR (Autonomous System Border Router, autonomous domain edge router) in the NVO3 network obtains the identifier of the PE (Provider Edge, operator edge router) device in the MPLS network and the ASBR distribution in the MPLS network MPLS label, the MPLS label assigned by the ASBR in the MPLS network will be used as the outer label of the MPLS-encapsulated message sent by the ASBR in the NVO3 network to the PE device;

[0063] 120. The ASBR in the NVO3 network allocates an IP address for the MPLS label from a local addres...

Embodiment 2

[0071] Please refer to figure 2 The embodiment of the present invention provides another method for realizing communication between the NVO3 network and the MPLS network. The method is used for the communication between the NVO3 network and the MPLS network. The NVO3 network is deployed in the first autonomous system (the first AS, AS1) , the MPLS network is deployed in the second autonomous system (the second AS, AS2); the method may include:

[0072] 210. The NVE in the NVO3 network receives the routing information sent by the ASBR in the NVO3 network, the routing information includes the correspondence between the IP address and the identifier of the PE device in the MPLS network, and the IP address is the The ASBR in the NVO3 network is allocated to the PE device from the local address pool, and is used as the outer address of the NVO3-encapsulated message sent by the tenant terminal system TES connected to the NVE to the user edge CE device connected to the PE device. L...

Embodiment 3

[0080] The communication methods between the NVO3 network and the MPLS network can be divided into a control plane scheme and a data plane scheme. Moreover, the data plane may include two directions, namely, an uplink direction from the NVO3 network to the MPLS network, and a downlink direction from the MPLS network to the NVO3 network.

[0081] In this embodiment, the technical solution of the present invention is described in detail from the control plane, the data plane and different directions in combination with a specific network architecture diagram.

[0082] Please refer to Figures 3a-3d , is a schematic diagram of network architecture and communication in this embodiment. The network architecture includes: a first AS (AS1) and a second AS (AS2). The first AS deploys an NVO3 network, and the second AS deploys an MPLS network. The ASBR (indicated by ASBR1 in the figure) of the NVO3 network communicates with the NVE, and the NVE is connected to, for example, two TESs, ...

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Abstract

The invention discloses a communication method and device for an NVO3 (Network Virtualization Overlays) network and an MPLS (multi-protocol label switching) network and aims to achieve cross-domain communication between the NVO3 network and the MPLS VPN (virtual private network) network. In certain feasible embodiments, the method includes the steps: an ASBR (autonomous system border router) in the NVO3 network acquires an identifier of PE (provider edge) equipment in the MPLS network and an MPLS label which is assigned by the ASBR in the MPLS network and which is used as an outer label for an MPLS packaged message transmitted to the PE equipment by the ASBR in the NVO3 network; in a local address pool, an IP (internet protocol) address is assigned for the MPLS label, and a correspondence between the MPLS label and the assigned IP address is stored; routing information which includes the identifier of the PE equipment and the assigned IP address is sent to an NVE (network virtualization edge), and the assigned IP address is used as an outer target address of a NVO3 packaged message which a TES (tenants terminal system) in the NVO3 network transmits to CE (customer edge) equipment connected with the PE equipment in the MPLS network.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and device for realizing communication between an NVO3 network and an MPLS network. Background technique [0002] Network Virtualization over Layer3 (NVO3) is a network virtualization technology, through which a physical network can be virtualized so that it can be shared by different tenants. The NVO3 encapsulation header contains a 24-bit virtual network ID (Virtual Network ID, VN ID). Different VN IDs are used to identify different virtual networks (Virtual Network, VN). Different VN IDs can be used to isolate different tenants belonging to different VNs. traffic between. [0003] Typical data encapsulation in NVO3 technology includes VXLAN (Virtual eXtensible Local Area Network, virtual extended local area network), NVGRE (Network virtualization Generic Routing Encapsulation, network virtualization general routing encapsulation), among them, VXLAN adopts MAC (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/723H04L45/50
CPCH04L12/4641H04L12/4633H04L61/5061H04L12/4679H04L12/66H04L45/50H04L2212/00
Inventor 郝卫国梁乾灯
Owner HUAWEI TECH CO LTD
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