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User access control method and DHCP relay

An access control and user technology, applied in the field of DHCP, can solve the problems of device performance impact, protocol stack packet receiving and processing impact, and user access control cannot be realized, so as to reduce the burden of equipment and achieve simple effects

Inactive Publication Date: 2017-01-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, if the standard method is used, if the cascaded device wants to intercept the downlink DHCP interaction message, first, it needs to plan the route to ensure that the downlink message must pass through the device on the pre-planned route. Second, it needs to adopt a method similar to snooping , to capture the downlink protocol packets and upload them to the application layer, which has a great impact on the packet receiving and processing of the transmitted protocol stack. Third, the snooping method may capture a large number of DHCP packets that are not needed by the device, and give the device Performance impact, that is to say, if the traditional protocol continues to be based on the cascaded relay, it is impossible to implement access control for users

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  • User access control method and DHCP relay
  • User access control method and DHCP relay
  • User access control method and DHCP relay

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Embodiment Construction

[0039]In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0040] image 3 It is a flow chart of the user access control method of the present invention, such as image 3 shown, including:

[0041] Step 300: The cascaded DHCP relay receives the packet from the upper-level DHCP relay, records the address of the original DHCP relay, and uses its own address as the proxy server address.

[0042] Among them, for the networking method of single-layer cascading DHCP relay, the upper-level DHCP relay is the first-level DHCP relay; for the networking mode of multi-layer cascading DHCP relay, the upper-level DHCP relay is the first-level DHC...

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Abstract

The present invention discloses a user access control method and a DHCP relay. The method comprises: a cascade DHCP relay receives message from an upper level DHCP relay, records the address of an original DHCP relay and takes the itself address as a proxy server address; and the cascade DHCP relay forwards the message step by step to the DHCP server. According to the technical scheme, the proxy server address of the original DHCP relay is recorded at the newly increased proxy server address filling (link-selection) option field on the cascade DHCP relay to allow the proxy server address of the cascade DHCP relay itself to fill into the proxy server address (giadder) field so as to allow the response message replied by the DHCP server to pass through all the cascade DHCP relay and realize the user access control on the cascade relay in the condition of three-layer access DHCP relay cascade.

Description

technical field [0001] The invention relates to DHCP technology, in particular to a DHCP-based user access control method and DHCP relay. Background technique [0002] Dynamic Host Configuration Protocol (DHCP, Dynamic Host Configuration Protocol) is a network configuration protocol that is optimized and extended on the basis of Bootstrap Protocol (BOOTP, Bootstrap Protocol). With the continuous development of Internet broadband services and mobile Internet, DHCP has been widely used in services such as Interactive Network Television (IPTV), Next Generation Network (NGN, Next Generation Network), 3G, and 4G. Traditional Broadband Remote Access Server (Bras, Broadband Remote Access Server) devices are generally deployed in a layer-2 network environment connected to users, and users of IP protocol over Ethernet (IPoE, IP over Ethernet) are generally managed in a centralized manner. In decentralized management mode, multiple Broadband Remote Access Server (BRAS, Broadband Remo...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L29/08
CPCH04L61/5014H04L61/5076H04L67/56H04L9/40
Inventor 张玉磊
Owner ZTE CORP