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Method, system and router for establishing lsp based on rt

A router and routing technology, applied in the field of communication networks, can solve the problems of unsupported network equipment, difficult operation and maintenance, and inability to meet security, etc., to achieve the effect of improving scalability, meeting security requirements, and reducing the number of

Active Publication Date: 2011-12-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above prior art adopts Full mesh connection, and all eNodeBs can communicate with each other, so it 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 based on rt
  • Method, system and router for establishing lsp based on rt
  • Method, system and router for establishing lsp based on rt

Examples

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Embodiment Construction

[0026] Figure 4 is a schematic diagram of network architecture according to an embodiment of the present invention.

[0027] 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 edge nodes connected to eNodeB1, eNodeB2, and eNodeB3 with respective links in the L3VPN network. The IP subnet address of the link between eNodeB1 and PE1 is configured as 20.1.1.0 / 24, for example. Similarly, the IP subnet address of the link between eNodeB2 and PE2 is configured as 20.1.2.0 / 24; the IP subnet address of the link between eNodeB3 and PE3 is configured as 20.1.3.0 / 24. The POP node is an edge node connecting the L3VPN network with the S-GW / MME link.

[0028] It should be noted that in the initial stage of networking, PE1, PE2, and PE 3 only establish LSP (Label Switch Path, Label Switch P...

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Abstract

The invention provides a method, a system and a router for establishing an LSP (Label Switched Path). The method comprises the following steps that: a first PE (Provider Edge router) receives a notice message from a first eNodeB (evolution NodeB), wherein the notice message comprises an IP (Internet Protocol) address of a second eNodeB, and the first eNodeB and the second eNodeB are neighboring base stations; the first PE generates and exports a RT (Route Target) according to the IP address of the first eNodeB; the first PE transmits a route message to other PEs with which the first PE has a route session or route reflection relation, so as to make a second PE to establish the LSP with the first PE according to the route message, wherein, in the route message, the IP address of the PE of a next hop is the IP address of the first PE, the RT is the exported RT, and the other PEs include the second PE. Thus, requirements on safety are satisfied, and simultaneously, network expansibility is improved.

Description

technical field [0001] The present invention relates to communication network, in particular to a method, system and router for establishing LSP based on RT. Background technique [0002] The wireless network has evolved from 3G (Third Generation, third-generation mobile communication technology) technology to LTE (Long Term Evolution, long-term evolution) technology, and the network bandwidth has been greatly improved. Compared with 3G technology, LTE technology has simplified the network architecture, which is mainly reflected in the evolution of 3G-based ATM (Asynchronous Transfer Mode, asynchronous transfer mode) / TDM (Time Division Multiplexing, time division multiplexing mode) 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 (Radio Net...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/00H04W40/02H04L12/56
CPCH04W40/00
Inventor 邓柱升
Owner HUAWEI TECH CO LTD
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