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Method, system and router for establishing LSP (Label Switched Path) based on VPN (Virtual Private Network) route

A router and routing technology, applied in the field of communication networks, can solve problems such as difficulties in operation and maintenance, inability to support network equipment, and inability to meet security requirements, and achieve the effects of meeting security requirements, improving scalability, and reducing quantity

Active Publication Date: 2012-02-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of the full mesh connection, all eNodeBs can communicate with each other, so the above existing technology cannot meet the security requirements
[0007] Second, the problem of network scalability
When the network scale is large, too many network connections will lead to scalability problems such as network equipment cannot support, and operation and maintenance difficulties

Method used

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  • Method, system and router for establishing LSP (Label Switched Path) based on VPN (Virtual Private Network) route
  • Method, system and router for establishing LSP (Label Switched Path) based on VPN (Virtual Private Network) route
  • Method, system and router for establishing LSP (Label Switched Path) based on VPN (Virtual Private Network) route

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Embodiment Construction

[0021] Figure 4 is a schematic diagram of network architecture according to an embodiment of the present invention.

[0022] Such as Figure 4 As shown, through the L3VPN (Three-layer Virtual Private Network) network, the eNodeB is interconnected with the S-GW (Serving-Gateway, Serving-Gateway) / MME (Mobility Management Entity) via the PE. Specifically, PE1, PE2, and PE3 are respectively edge nodes directly connected to eNodeB1, eNodeB2, and eNodeB3 in the L3VPN network. The IP subnet addresses of the link between eNodeB1 and PE1 are respectively configured as 20.1.1.0 / 24. Similarly, the IP subnet address of the link between eNodeB2 and PE2 is respectively configured as 20.1.2.0 / 24; the IP subnet address of the link between eNodeB 3 and PE3 is respectively configured as 20.1.3.0 / 24. The POP node is an edge node directly connected between the L3VPN network and the S-GW / MME through a link.

[0023] It should be noted that in the initial stage of networking, PE1, PE2, and PE3...

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Abstract

The invention provides a method, a system and a base station for establishing an LSP (Label Switched Path) based on a VPN (Virtual Private Network) route. The method comprises the following steps: receiving a notification message from a first evolution node base eNodeB by a first operator edge router PE, wherein the notification message comprises an IP (Internet Protocol) address of a second eNodeB and the first eNodeB and second eNodeB belong to adjacent base stations; searching for a pre-established routing table by the first PE according to the IP address of the second eNodeB; taking a target IP address acquired by the first PE as the IP address of the second eNodeB and taking the next skipping, a table term of a second PE, as a matched routing table term; and establishing connection with the LSP of the second PE by the first PE according to a label distributing protocol. Besides, LSP network connection is established between PEs having direct IP layer connecting relation in adjacent base stations.

Description

technical field [0001] The invention relates to a communication network, in particular to a method, a system and a router for establishing an LSP based on a VPN route. Background technique [0002] The wireless network has evolved from 3G (Third Generation, third-generation mobile communication technology) technology to LTE (Long Term Evolution, that is, long-term evolution), and the network bandwidth has been greatly improved. Compared with 3G technology, LTE technology has also simplified the network architecture, which is mainly reflected in the evolution of 3G-based ATM / TDM (Asynchronous Transfer Mode, asynchronous transfer mode) (Time Division Multiplexing, Time Division Multiplexing) convergence network into LTE-based A flat network of IP (Internet Protocol, a protocol for interconnection between networks). [0003] figure 1 It is a schematic diagram of an existing 3G network. In a 3G network, services of all NodeBs (node ​​base stations) are aggregated to an RNC (R...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/12H04W76/02H04W40/24
CPCH04W40/00H04L45/50
Inventor 邓柱升
Owner HUAWEI TECH CO LTD
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