System based on two layer VPN foreign medium communication and method thereof

A medium and heterogeneous technology, applied in the field of network communication, can solve the problems of complex configuration process, poor maintainability of L2VPN, inability to realize L2VPN heterogeneous medium intercommunication, etc., so as to enhance maintainability, facilitate service provisioning, and reduce networking costs Effect

Inactive Publication Date: 2006-11-15
HUAWEI TECH CO LTD
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Problems solved by technology

[0011] From the above description, it can be known that the current networking mode of MPLS L2VPN heterogeneous media intercommunication can only realize point-to-point heterogeneous media intercommunication, and when the local CE and PE adopt CCC (circuit cross-connect) remote connection mode or SVC (switched virtual circuit) connection mode When connecting, L2VPN heterogeneous media intercommunication cannot be realized; moreover, since the PE does not dynamically update the MAC address learned by ARP when receiving the IP pack

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  • System based on two layer VPN foreign medium communication and method thereof
  • System based on two layer VPN foreign medium communication and method thereof

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[0054] The core of the system and method based on Layer 2 VPN heterogeneous media intercommunication of the present invention is that the local PE is connected to at least one local CE through a Layer 2 switching device, and each local CE is connected to the remote CE through the local PE and the remote PE, When the local PE receives the ARP request from the local CE to the remote CE, it terminates the ARP request. When the local PE receives the ARP request for mutual access from the local CE, it does not send an ARP response, and proceeds according to the ARP request for mutual access from the local CE. ARP learning, when the local PE receives the local CE packet transmitted by the Layer 2 switching device, it obtains the IP packet from the local CE packet, encapsulates it into an MPLS packet, and forwards it to the remote PE. When the PE receives the remote CE packet transmitted by the remote PE, it obtains the IP packet from the remote CE packet and encapsulates it into a La...

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Abstract

The invention provides a heterogeneous medium intercommunication system and method based on two-layer VPN, and its kernel: local PE is connected through two-layer switching device with at least a local CE, ARP agent in the local PE terminates ARP request of remote CE, does not sends any ARP response to the ARP request and learns ARP according to the ARP request; message transmission module in the local PE packs IP message in local CE message into MPLS message and transmits the MPLS message to remote PE, packs IP message in remote CE message transmitted by the remote PE into two-layer Ethernet message, and transmits the two-layer Ethernet message to the local CE according to the ARP information learnt by the ARP agent. And the invention implements enterprise network remote interconnection for medium-sized and small enterprises, especially applied to hub-spoke-like point-to-point heterogeneous medium intercommunication, achieving the purpose of point-to-point two-layer VPN-based heterogeneous medium intercommunication of two-layer broadcasting networks.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a system and method for intercommunication of heterogeneous media based on Layer 2 VPN. Background technique [0002] MPLS L2VPN (Multiprotocol Label Switching Layer 2 Virtual Private Network) provides Layer 2 VPN services based on MPLS networks. MPLS L2VPN enables operators to provide Layer 2 VPN services of different media on a unified MPLS network. The different media here include ATM (Asynchronous Transfer Mode), FR (Frame Relay), VLAN (Virtual Local Area Network), Ethernet (Ethernet), PPP (Point-to-Point Protocol), etc. [0003] In MPLS L2VPN, the concepts of CE (Customer Edge Equipment), PE (Provider Edge Equipment), and P (Provider Equipment) are similar to those in BGP / MPLS L3VPN (Border Gateway Protocol / Multiprotocol Label Switching Layer 3 Virtual Private Network) The concept is the same, and the principle of operation is basically the same. [0004] MPL...

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Application Information

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IPC IPC(8): H04L12/46H04L12/56H04L29/06
CPCH04L12/4641H04L45/04H04L45/50H04L61/103
Inventor 刘珺
Owner HUAWEI TECH CO LTD
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