MPLS VPN and its control and forwarding method

A multi-protocol label, virtual private network technology, applied in the field of multi-protocol label switching virtual private network networking, can solve problems such as increased burden on PE equipment, non-independence, user VPN misconfiguration, etc. Security issues, avoiding the effects of misconfiguration
CN100372336CActive Publication Date: 2008-02-27HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2008-02-27

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Abstract

The present invention discloses a Virtual Private Network (VPN), which includes: a Sub-Provider Edge (SUB_PE), configured in a customer's network and connected with a PE in a provider's network; at least one SUB_VPN belonging to a same customer is configured under the SUB_PE and accesses the provider's network through the SUB_PE. The present invention also discloses a method for controlling and forwarding route of the VPN, including: an SUB_PE or a PE adds an export target attribute of the VPN where it is located to the route before transmitting; after receiving the route, the SUB_PE or the PE compares the export target attribute in the route with the import target attribute saved by itself, if they match, accept the route and forward it to a lower layer VPN; otherwise, reject the route.
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Description

technical field

[0001] The invention relates to the communication field, in particular to the multi-protocol label switching virtual private network networking technology. Background technique

[0002] Virtual Private Networking (Virtual Private Networking, referred to as "VPN") refers to the establishment of a private network in a public network, and data is transmitted in the public network through a secure "encrypted channel". Enterprises only need to rent a local data dedicated line to connect to the local Internet (Internet), and institutions in various places can transfer information to each other; Can be connected to enter the enterprise network. The use of VPN has the advantages of saving costs, providing remote access, strong scalability, easy management and full control.

[0003] Multi-protocol Label Switching (MPLS for short) is an Internet Engineering Task Force (IETF for short) evolved from Tag Switching of Cisco (CISCO). standard protocol. MPLS is a label-b...

Claims

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