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A method, device and system for establishing forwarding entries

A technology for forwarding table items and devices, which is applied in the field of communication, and can solve the problems of unfavorable NVO3 network expansion of the number of terminals, excessive resource occupation of border routing devices, etc.

Active Publication Date: 2018-09-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a method, device and system for establishing a forwarding entry, which is used to solve the problem that when the NVO3 network is interconnected with the MPLS network, the border routing device of the NVO3 network stores all information related to the NVO3 network. The MAC address entry of the connected terminal device causes the resource occupation of the border routing device to be too much, which is not conducive to the technical problem of the expansion of the number of terminals in the NVO3 network

Method used

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  • A method, device and system for establishing forwarding entries

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0093] The embodiment of the present invention takes figure 1 The network architecture shown is based on how the first border routing device synchronizes the MAC address of the terminal device connected to the NVO3 network to the MPLS network, and establishes a forwarding table entry. The establishment of a forwarding table provided by the embodiment of the present invention The method of item is executed by the first border routing device located in the NVO3 network.

[0094] figure 2 A flow chart of a method for establishing a forwarding entry provided by an embodiment of the present invention, such as figure 2 As shown, the method includes:

[0095] S201: The first border routing device receives a first MAC route advertisement message sent by a first NVE device, and the first MAC route advertisement message includes the MAC address and the MAC address of the first terminal device learned by the first NVE device. The first VN ID of the first terminal device, the first t...

Embodiment 2

[0110] see image 3 , image 3It is a flow chart of a message forwarding method provided by the embodiment of the present invention. On the basis of Embodiment 1, the embodiment of the present invention describes the flow of message forwarding from the description of the first border routing device if according to the first forwarding The publication item forwards the message from the MPLS network to the first terminal device. The method can be found in figure 2 Based on the method shown, it can also be implemented in Figure 2A Implemented on the basis of the method shown. The methods include:

[0111] S301: The first border routing device receives a first MPLS packet sent by the second border routing device, the first MPLS packet includes a label stack and a first data packet, and the first data packet is In the message sent by the second terminal device in the MPLS network to the first terminal device, the label stack includes the first VPN label.

[0112] It should ...

Embodiment 3

[0124] see Figure 4 , Figure 4 It is a flow chart of a method for establishing a forwarding entry provided by an embodiment of the present invention. On the basis of Embodiment 1, the embodiment of the present invention describes how the first border routing device assigns the MAC address of the terminal device in the MPLS network to Synchronize to the NVO3 network terminal device, and create a forwarding entry for description. The methods include:

[0125] S401: The first border routing device receives a third MAC route notification message sent by the second border routing device, where the third MAC route notification message includes the MAC address of the third terminal device and the second border The routing device assigns the second VPN label to the third terminal device, where the third terminal device is a terminal device in the MPLS network.

[0126] It should be noted here that the third terminal device may be any terminal device in the MPLS network, and the t...

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PUM

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Abstract

The embodiment of the present invention discloses a method, device and system for establishing a forwarding entry. The first border routing device receives a first MAC route notification message, and the first MAC route notification message includes the MAC address and the MAC address of the first terminal device. A first VN ID, the first border routing device assigning a first VPN label to the first VN ID and establishing a first forwarding entry, the first forwarding entry including the IP address information of the first NVE device , the corresponding relationship between the first VN ID and the first VPN label, it can be seen that when realizing network interconnection, the first border routing device does not need to save the MAC address table of the first terminal device The item can also forward the message from the MPLS network to the first terminal device through the first forwarding table item, which reduces the storage burden of the first border routing device and is beneficial to the number of terminals in the NVO3 network extension.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for establishing a forwarding entry. Background technique [0002] In the prior art, cross-domain interconnection is realized between different types of networks, such as three-layer network virtualization technology (Network Virtualization Over Layer3, NVO3) network and multi-protocol label switching (Multi-Protocol Label Switching, MPLS) network, the NVO3 network establishes a connection with a border routing device of the MPLS network through a border routing device belonging to the NOV3 network, thereby realizing the interconnection between the NVO3 network and the MPLS network. [0003] When a terminal device connected to the NVO3 network performs data interaction with a terminal device in the MPLS network, the border routing device of the NVO3 network is required to save the media interface of all terminal devices connected to the NVO3 network ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L12/723H04L12/947H04L45/74H04L45/50
Inventor 郝卫国徐小虎庄顺万阴元斌
Owner HUAWEI TECH CO LTD