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Method and system for deploying L3VPN (Layer 3 Virtual Private Network) in LTE (Long Term Evolution) mobile backhaul network

A backhaul network, network-side technology, applied in the field of L3VPN deployment, can solve problems such as poor flexibility, inability to change, and reduced network scalability

Active Publication Date: 2018-09-28
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tunnels are established between all two PE nodes that need to communicate, which will greatly reduce the scalability of the network
[0007] (3) The existing centralized L3VPN deployment method cannot specify the control strategy for local route diffusion or non-diffusion to the remote end, that is, the local route diffusion method is fixed and cannot be changed
Therefore, the existing centralized L3VPN deployment method has poor flexibility

Method used

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  • Method and system for deploying L3VPN (Layer 3 Virtual Private Network) in LTE (Long Term Evolution) mobile backhaul network
  • Method and system for deploying L3VPN (Layer 3 Virtual Private Network) in LTE (Long Term Evolution) mobile backhaul network
  • Method and system for deploying L3VPN (Layer 3 Virtual Private Network) in LTE (Long Term Evolution) mobile backhaul network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] The UNI interface information of the PE node in S2 includes: the UNI interface (User Network Interface, user network interface) of the PE node, the IP address and mask of the UNI interface, and the VPN Label (VPN label) of the PE node. The VPN Label can be automatically assigned or specify manually.

[0090] The local static route information of the PE node in S2 includes: the destination IP address and mask, the UNI interface output by the local static route, and the next-hop address of the local static route.

Embodiment 2

[0092] On the basis of Embodiment 1, the process of creating the network-side routing information of each PE node in S3 includes: defining the PE node that needs to create a network-side route as node A, and node A is a convergence node; according to the tunnel of node A, determine The peer node B of node A, and node B is the core node; according to the tunnel of node B, determine the peer node C of node B, and node C is the aggregation node; in L3VPN, only one jump occurs (that is, aggregation Node A to core node B, core node B to sink node C), so there are no other peer nodes after node C.

[0093] At this time, the network-side routing information of node A includes the network-side routing information from node A to node B, and the network-side routing information forwarded by node A to node C through node B;

[0094] The network-side routing information from node A to node B includes:

[0095]Purpose IP and mask, purpose IP and mask are: the IP address and mask of the UN...

Embodiment 3

[0105] On the basis of Embodiment 2, after the creation of the network-side routing information of the PE node described in S3 (the network-side routing information forwarded by node A to node C via node B), the following steps are also included: when node A passes through node B When the destination IP of the network-side routing information forwarded by B to node C belongs to the same network segment as the destination IP of the local static routing information of node A, it proves that node C and node A have a master-backup relationship. The route of A is diffused to node C, that is, the network-side routing information forwarded by node A to node C through node B is deleted.

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Abstract

The invention discloses a method and system for deploying a L3VPN (Layer 3 Virtual Private Network) in an LTE (Long Term Evolution) mobile backhaul network and relates to the field of packet network transmission. The method comprises the steps of determining all PE (Provider Edge) nodes required for deployment of the L3VPN, wherein all PE nodes comprise at least one sink node and at least one corenode; determining UNI (User Network Interface) information and local static route information of each PE node, and deploying tunnels from each sink node to the core nodes; establishing network side route information of each PE node according to the tunnel, the UNI information and the local static route information of each PE node; and deploying L3VPN information of each PE node to the corresponding PE node, wherein the L3VPN information comprises tunnel information, UNI information, local static route information and network side route information of the PE node. According to the method and the system, the L3VPN can be statically deployed in the LTE mobile backhaul network, and further the maintainability and stability of the network are improved.

Description

technical field [0001] The present invention relates to the field of packet network transmission, in particular to a method and system for deploying an L3VPN (Layer 3 Virtual Private Network) in an LTE (Long Term Evolution, Long Term Evolution) mobile backhaul network. Background technique [0002] With the development of wireless network technologies, mobile networks are gradually evolving to LTE networks. see figure 1 As shown, the LTE network architecture generally includes: eNBs (evolved eNodeB, base station), MME (Mobility Management Entity, the key control node of the 3GPP protocol LTE access network, that is, the mobile management entity) and SGW (Serving GateWay, serving gateway), etc. entity. The requirement for the network structure of the LTE mobile backhaul network has changed from a point-to-point convergence network to a point-to-multipoint or multipoint-to-multipoint routing network. At the same time, the mobile backhaul network needs to support S1 service ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02H04L12/46H04L12/723H04L12/741H04L45/50H04L45/74
CPCH04L12/4641H04L45/50H04L45/74H04W40/02
Inventor 罗岳斌
Owner FENGHUO COMM SCI & TECH CO LTD
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