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 operation and maintenance difficulties, unsupported network equipment, and inability to meet security requirements, to meet security requirements, improve scalability, and reduce the number of effects.

Active Publication Date: 2014-05-07
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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Experimental program
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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] like 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 on...

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Abstract

Provided in the present invention are a method, system, and base station for establishing a label-switched path (LSP). A first provider edge router (PE) receives a notification message from a first evolved node base station (eNodeB). The notification message comprises an IP address of a second eNodeB. The first eNodeB and the second eNodeB are adjacent base stations. The first PE searches for a pre-established routing table on the basis of the IP address of the second eNodeB. The first PE acquires a routing table entry having the IP of the second eNodeB as a destination IP and having an entry of the second PE as a match for a next hop. The first PE establishes via a label distribution protocol an LSP connection to the second PE. As such, an LSP network connection is established between PEs respectively having a direct IP layer connection-relation to the adjacent base station.

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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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/715H04L29/12H04W76/02H04W40/24
CPCH04W40/00H04L45/50
Inventor 邓柱升
Owner HUAWEI TECH CO LTD
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