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Method, device and system for obtaining medium access control address

A medium access control and address technology, applied in the field of network communication, can solve the problems of unfavorable centralized management of IP addresses, failure to obtain L2TP user MAC addresses, and failure to obtain user terminal MAC addresses, etc., to achieve the effect of centralized management

Inactive Publication Date: 2008-01-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the L2TP tunnel is used to establish the connection between the LAC and the LNS, and the LNS cannot obtain the MAC address of the L2TP user. Therefore, the user terminal cannot allocate an IP address from the remote DHCP Server, but can only obtain an IP address from the local address pool on the LNS device.
[0004] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: because the remote DHCP Server assigns the IP address to the user terminal, and the RADIUS Server authenticates, bills and manages the user, all need the MAC address of the user terminal , and the LNS cannot obtain the MAC address of the user terminal, thus causing the user terminal to fail to obtain the IP address from the DHCP server, which is not conducive to the centralized management of IP addresses
Moreover, due to the lack of the MAC address of the user terminal, the RADIUS Server cannot perform authentication, accounting and management on the user.

Method used

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  • Method, device and system for obtaining medium access control address
  • Method, device and system for obtaining medium access control address
  • Method, device and system for obtaining medium access control address

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Embodiment Construction

[0015] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] Fig. 2 is a flow chart of a method for obtaining a MAC address in an embodiment of the present invention. As shown in the figure, the specific steps for the LNS to obtain the MAC address of an L2TP user terminal are as follows:

[0017] In step S21, the L2TP user terminal prepares to go online and sends a call request message to the LAC, and the LAC obtains the MAC address of the user terminal according to the call request message.

[0018] In step S22, an L2TP tunnel is established between the LAC and the LNS, and a session is established to complete the interactive connection between the LAC and the LNS.

[0019] Step S23, the LAC generates a MAC AVP according to the MAC address of the user terminal, and adds the MAC AVP to the session control message, the MAC AVP includes the MAC address of the ...

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Abstract

The present invention discloses a method for getting the MAC address, which relates to the network communication field. First, an LAC gets the MAC address of a user terminal; then, the LAC sends a session control message carrying the MAC address of the user terminal to an LNS; at last, the LNS gets the MAC address of the user terminal according to the session control message. The present invention also discloses a system for getting the MAC address, an LAC and an LNS. The present invention makes the LNS capable of getting the MAC address of the user terminal through the session control message carrying the MAC address of the user terminal. A DHCP server can allocate IP addresses for the user terminal according to the MAC address of the user terminal, which is favorable for the IP addresses centralized management. Moreover, a RADIUS Server can also perform authentication, accounting and management to the users according to the MAC address of the user terminal.

Description

technical field [0001] The present invention relates to the field of network communication, in particular to a method, system and device for acquiring a MAC (MediaAccessControl, Media Access Control) address. Background technique [0002] LAC (L2TP Access Concetrator, L2TP Access Concentrator) is a device attached to the switching network with Point-to-Point Protocol (PPP, Point to Point Protocol) end system and L2TP (Layer 2Tunneling Protocol, Layer 2 Tunneling Protocol) protocol processing capabilities. One end point of the L2TP tunnel, LAC is generally a network access server, mainly used to provide users with access services through PSTN / ISDN (Public Switched Telephone Network, Public Switched Telephone Network / Integrated Service Digital Network, Integrated Service Data Network) and other networks . LNS (L2TP Network Server, L2TP network server) is a server end used to process the L2TP protocol on the PPP end system. The LAC is located between the LNS and the remote sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L29/06
Inventor 华建军郑飞
Owner HUAWEI TECH CO LTD
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