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Method for generating and transmitting three-layer virtual special network equative routing and edge router

A three-layer virtual, private network technology, applied in the field of communication, can solve the problem of inability to perform equivalent forwarding, and achieve the effect of improving the utilization rate

Inactive Publication Date: 2014-06-18
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use the optimized route as the optimal route, reflect the optimal route to the PED through BGP neighbors, use the same optimization rules to optimize an optimal route, activate the optimized optimal route, and iterate to the public network tunnel. Only one route exists on the PED, so the next hop of the CE1 route received by the PED is either PEA or PEB, and equal-cost forwarding cannot be performed.

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  • Method for generating and transmitting three-layer virtual special network equative routing and edge router
  • Method for generating and transmitting three-layer virtual special network equative routing and edge router
  • Method for generating and transmitting three-layer virtual special network equative routing and edge router

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Embodiment Construction

[0060] In order to make the purpose, technical means and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0061] The basic idea of ​​the present invention is that PE saves the route received from the downstream PE, and optimizes the equivalent route, adds and activates the equal-cost route identification attribute for the optimized equal-cost route; The equal-cost route with the equal-cost route identification attribute is sent to the upstream PE. Both the packet equivalent forwarding method and the PE are implemented based on the above-mentioned idea, which improves the utilization rate of the link bandwidth.

[0062] Configure the equal-cost route selection algorithm on the PE. This algorithm is referred to as the equal-cost route selection rule hereinafter.

[0063] After the VPNv4 route equivalence capability is enabled, VPNv4 route optimiz...

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Abstract

The invention provides a method for generating and transmitting three-layer virtual special network equative routing and a provider edge router (PE). The equative routing generating method comprises the following steps that: A, routing received from the downstream PE is stored by the PE, equative routing is preferably selected, and the preferably selected routing is added with equative routing identification attributes and are activated; and B, when upstream equipment is the PE, the equative routing added with the equative routing identification attributes are issued to the upstream PE. The equative transmitting method and the PE are both realized on the basis of the method, and the utilization rate of link bandwidth is increased.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for generating and forwarding equal-cost routes of a three-layer virtual private network and an edge router. Background technique [0002] Multiprotocol Label Switching (MPLS) Layer 3 Virtual Private Network (L3VPN) is a Service Provider Edge (PE)-based L3VPN technology in the Service Provider VPN solution, which uses Border Gateway Protocol (BGP) in the Service Provider Backbone Publish VPN routes on the Internet, and use MPLS to forward VPN packets on the service provider's backbone network. At present, MPLS L3VPN is widely used in operators to provide VPN services for customers. [0003] The MPLS L3VPN model consists of three parts: the customer network edge (CE), the service provider edge (PE) and the backbone router (P) in the service provider network. [0004] CE equipment, has an interface to connect directly with the service provider (SP). CE can be a ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/757H04L12/743H04L12/46H04L45/16
Inventor 赵昌峰王茹萍
Owner NEW H3C TECH CO LTD