Method, device and Radius server used for detecting client connection status

A connection status, client technology, applied in the field of communication, can solve the problem of inconsistent online user information

Active Publication Date: 2012-11-21
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The present invention aims to provide a method, device and Radius server for detecting the connection state of the client, which can solve the problems in the prior art when the UDP message is lost, or the user is suddenly disconnected due to power failure of the access switch. User records will not be deleted from the user list, resulting in inconsistencies between the online user information on the Radius server and the access switch

Method used

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  • Method, device and Radius server used for detecting client connection status
  • Method, device and Radius server used for detecting client connection status
  • Method, device and Radius server used for detecting client connection status

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Embodiment Construction

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0031] In an embodiment of the present invention, SNMP is used to operate the switch to send a short message to the authentication client. In order to realize this function, the switch needs to define private MIB (Management Information Base, basic management information) and OID (ObjectIdentifier, object identifier). MIB is a collection of a series of defined objects, and it is a standard for network management data. In this standard, the data items that the network proxy device must save, the data type, and the operations allowed in each data item are specified. Through the access to these data items, you can get all the statistical content of the gateway. Then, basic network management can be realized through the comprehensive analysis of the statistical content of multiple gateways. The main purpose of MIB is to enable SMNP to ...

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Abstract

The invention discloses a method, device and Radius server used for detecting client connection status, wherein the method comprises the following steps: after losing client TCP connection, if the Radius server can not establish connection with the client again within a first set time, the Radius server sends SNMP message to an access switch; the access switch searches whether a user on the client is on line according to the SNMP message, using the search result as the response of the SNMP message; and if the search result shows that the user on the client is not on line, the on-line user record corresponding to the client is deleted from the on-line user list. By using the method, device and Radius server of the invention, the on-line user information of the Radius server and the access switch are the same so as to ensure that the on-line user information seen by the administrator is the latest.

Description

technical field [0001] The invention relates to the communication field, in particular to a method, a device and a Radius server for detecting the connection state of a client. Background technique [0002] The 802.1X protocol is an access control and authentication protocol based on Client / Server (client / server mode). It can restrict unauthorized users / equipment from accessing LAN (Local Area Network, local area network) / WLAN (Wireless Local Area Network, wireless local area network) through the access port. Before obtaining various services provided by the switch or LAN, 802.1x authenticates the user / equipment connected to the switch port. Before the authentication is passed, 802.1x only allows EAPOL (Extensible Authentication Protocol over LAN, based on LAN) data to pass through the switch port connected to the device; after the authentication is passed, normal data can pass through the Ethernet port smoothly. [0003] Radius (Remote Authentication Dial In User Service,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/56H04L12/24H04L12/26
Inventor 燕丹杨鑫伟
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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