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Intercommunication method of shortest path bridging network and Layer 3 virtual private network and common edge equipment

A shortest path bridge and edge device technology, applied in the direction of network interconnection, data exchange through path configuration, etc., can solve the problems of inability to realize integrated access of edge devices, waste of network device resources, etc., to save network device resources, reduce cost effect

Active Publication Date: 2013-07-31
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] When the existing SPB and L3VPN network are interconnected, the SPB network and L3VPN must be completely separated through actual networking equipment, and the integrated access of the same edge device cannot be realized, which is a big waste of network equipment resources.

Method used

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  • Intercommunication method of shortest path bridging network and Layer 3 virtual private network and common edge equipment
  • Intercommunication method of shortest path bridging network and Layer 3 virtual private network and common edge equipment
  • Intercommunication method of shortest path bridging network and Layer 3 virtual private network and common edge equipment

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Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] image 3 The flow chart of the route learning method when the SPB network and the L3VPN interconnection provided by the embodiment of the present invention, such as image 3 As shown, the specific steps are as follows:

[0052] Step 301: When the L3VPN is interconnected with the SPB network, when deploying the network, the edge device between the SPB network and the L3VPN is deployed as: having both the PE device function of the L3VPN and the BEB device function of the SPB network. In this embodiment, the Edge devices are called BEB / PE devices.

[0053] BEB / PE equipment integrates L3VPN function and SPB function. To realize L3VPN transparent transmission in SPB network, the following two things need to be done: identify VPN instance in SPB network, and adapt IP forwarding in SPB network.

[0054] Step 302: Configure a source...

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Abstract

The invention discloses an intercommunication method of a shortest path bridging (SPB) network and a Layer 3 virtual private network (L3VPN), and common edge equipment. The method comprises the steps that the SPB network is connected with the L3VPN by the common edge equipment; the edge equipment serves as BEB (backbone edge bridge) equipment of the SPB network and PE (provider edge) equipment of the L3VPN simultaneously; association relationships between VPN instances and VSIs (virtual service instances) of the SPB network are configured on the edge equipment; each VPN instance is provided with a gateway interface; MAC (media access control) addresses of the gateway interfaces of the different VPN instances are different; for each VPN instance, the common edge equipment learns an IP (internet protocol) address resolution table entry and a host routing table entry of the common edge equipment at an SPB PW opposite end, learns a VPN routing table entry in the VPN instance of the common edge equipment at the opposite end according to the learned host routing table entry, and forwards a message from the VPN to the SPB network, or a message from the SPB network to the VPN according to the learned table entries. The equipment cost for the intercommunication of the SPB network and the L3VPN is lowered.

Description

technical field [0001] The invention relates to the field of wireless technology, in particular to a shortest path bridge (SPB, Shortest Path Bridging) network and a three-layer virtual private network (L3VPN, Layer3Virtual Private Network) intercommunication method and a public edge device. Background technique [0002] SPB is one of the Ethernet standards defined by the Institute of Electrical and Electronics Engineers (IEEE, Institute of Electrical and Electronics Engineers) 802.1aq. It is a further extension of the Multiple Spanning Tree Protocol (MSTP, Multiple Spanning Tree Protocol) and aims to build large flat The non-blocking two-layer network uses SPB-intermediate system to intermediate system (ISIS, Intermediate System to Intermediate System) to share the link status in the network, and each node of the network calculates the shortest path between each node in parallel, avoiding the use of generated The instability caused by STP (Spanning Tree Protocol) and the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46
Inventor 宋小恒郑国良
Owner XINHUASAN INFORMATION TECH CO LTD
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