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GRE (Generic Route Encapsulation) tunnel realization method, access equipment and aggregation gateway

A technology of GRE tunnel and aggregation gateway, which is applied in the field of access equipment, aggregation gateway, and GRE tunnel implementation method, and can solve the problems of inability to use network resources and inapplicability.

Active Publication Date: 2017-02-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this is not applicable to access devices or AGs where multiple access networks are aggregated and have multiple IP addresses. If the IP addresses are still configured statically, it is obviously impossible to use the aggregation technology to dynamically select access networks to utilize network resources. The advantages

Method used

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  • GRE (Generic Route Encapsulation) tunnel realization method, access equipment and aggregation gateway
  • GRE (Generic Route Encapsulation) tunnel realization method, access equipment and aggregation gateway
  • GRE (Generic Route Encapsulation) tunnel realization method, access equipment and aggregation gateway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] figure 1 It is a flow chart of a method for implementing a GRE tunnel provided in Embodiment 1 of the present invention. The method is applicable to establishing a GRE tunnel between an access device and an AG, and is applicable to network architectures of various access devices and AGs. Meanwhile, the method is applicable to Internet Protocol Version 4 (IPV4 for short) and Internet Protocol Version 6 (IPV6 for short), and is also applicable to a coexistence network of IPV4 and IPV6. The method in this embodiment can be implemented by an access device on the access side, and the access device can be an access point (Access Point, AP for short) or HG, or an AG, and the present invention does not impose any limitation on this. Such as figure 1 As shown, the method can be carried out as follows:

[0074] 101. The access device acquires an address of a convergence gateway group, where the convergence gateway group includes at least one convergence gateway.

[0075] 102. ...

Embodiment 2

[0081] Figure 2AIt is a signaling flowchart of the GRE tunnel implementation method provided by Embodiment 2 of the present invention, Figure 2B It is a schematic diagram of the access network structure applicable to the present invention, such as Figure 2B As shown, the access network is composed of access devices HG, gateways GW1, GW2, and AG1, AG2, and AG3, wherein AG1, AG2, and AG3 form an AG group, but it is not limited thereto, and the AG group may include at least one AG , shown here as an example. Each aggregation AG can include multiple line card (Line Card, LC for short) addresses, that is, T3 in the figure 11 ~T3 13 , T3 21 ~T3 23 and T3 31 ~T3 33 .

[0082] The access device obtains the address of the aggregation gateway group, which can be obtained through the gateway configuration protocol in this embodiment, and the specific method is:

[0083] 201. The access device sends a Radius access request to the AG.

[0084] 202. The AG forwards the Radius a...

Embodiment 3

[0093] image 3 The signaling flowchart of the GRE tunnel implementation method provided by Embodiment 3 of the present invention, such as image 3 As shown, after the access device obtains the address of the aggregation gateway group, the establishment of the GRE tunnel can be completed according to the following process:

[0094] 301. The access device sends a GRE tunnel establishment request carrying its own address to the aggregation gateway group.

[0095] 302. The first aggregation gateway determines itself as the aggregation gateway that receives the GRE tunnel establishment request according to the priority of the aggregation gateway group, and determines to accept the GRE tunnel establishment request, and at the same time acquires the address of the access device from the GRE tunnel establishment request, It is used as the destination address of the access side of the first GRE tunnel.

[0096] 303. The first aggregation gateway sends a GRE tunnel establishment acce...

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Abstract

The embodiments of the invention provide a GRE (Generic Route Encapsulation) tunnel realization method, access equipment and an aggregation gateway. The method comprises the steps of: the access equipment acquiring an address of an aggregation gateway group, the aggregation gateway group comprising at least one aggregation gateway; taking the address of the aggregation gateway group as a destination address, sending a tunnel establishment request encapsulated with the address of the access equipment, the tunnel establishment request being used for requesting for establishing a first GRE tunnel; receiving the tunnel establishment acceptance response returned by a first aggregation gateway, and acquiring the address of the first aggregation gateway from the tunnel establishment acceptance response, wherein the first aggregation gateway belongs to the aggregation gateway group; and configuring the address of the first aggregation gateway as a network destination address of the first GRE tunnel. The method dynamically establishes the GRE tunnel in the access network adopting an aggregation technology.

Description

technical field [0001] The embodiment of the present invention relates to communication technology, and in particular to a method for realizing a GRE tunnel, an access device and a convergence gateway. Background technique [0002] In actual network transmission, operators often implement user service transmission by configuring tunnels, such as virtual local area network (Virtual Local Area Network, VLAN for short) and pseudowire (Pseudo Wire, PW for short) tunnels. But these tunnel configurations have certain functional requirements on the network and network equipment. For example, when configuring a PW tunnel, it is required that both the provider edge device (Provider Edge, PE for short) and the provider core device (Provider, P for short) in the network need to support label forwarding. The Generic Route Encapsulation (GRE for short) tunnel is a simple data tunnel method, which only needs to ensure the configuration of the tunnel edge device. Therefore, the GRE techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L45/74
CPCH04L12/4633H04L41/0803H04L12/66H04L45/74
Inventor 薛莉张劲峰张海波张建政
Owner HUAWEI TECH CO LTD