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Method for reducing user address analysis protocol broadcast on access equipment

A user address and access device technology, applied in the field of communications, can solve problems such as interruption of user data transmission, loss of user ARP request packets, and impact on service stability of aggregation switches, to reduce impact and reduce processing load.

Active Publication Date: 2008-01-02
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0005] Due to the short aging time of user PCs and the poisoning of some user PCs, there are too many user ARP broadcasts. If not suppressed, it will not only affect the service stability of the aggregation switch, but also have an impact on the broadband remote access server (BRAS). This is a serious security issue
The most commonly used method is to limit the broadcast packet rate on the user side of the access device and the aggregation switch, but this will cause the loss of the user ARP request packet, and the user cannot resolve the media access control (MAC) address of the gateway, resulting in user Interruption of data transmission leads to unstable services and affects user network quality of service (QOS) attributes, which has a greater impact on some instant messaging services and video communication services

Method used

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  • Method for reducing user address analysis protocol broadcast on access equipment

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Embodiment Construction

[0019] The invention stipulates that the access equipment adopts the Ethernet switching core, and works in the two-layer forwarding mode. On the access device, only the uplink ARP from the user side is processed, and the downlink ARP is not processed. In the present invention, the uplink ARP request packet from the user side is intercepted in the access device, and delivered to the ARP proxy response module, which directly completes the response of the response packet of the user's ARP request, thereby realizing the termination of the user's ARP request on the access device .

[0020] The present invention will be described in detail below with reference to the accompanying drawings.

[0021] As shown in Figure 1, the access device is divided into two components, the control plane and the data plane. The control plane takes the CPU as the core and is used for protocol and network management processing. The data plane uses the Ethernet switching chip as the core to forward n...

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Abstract

The invention discloses a method for reducing user address analysis protocol broadcast on access device, comprising that a control plane receives an ARP request pack from user, the control plane according to a virtual local network (VLAN)and an object IP of the ARP request pack searches a network gate database to obtain the MAC address of the network gate, a data plane builds an ARP answer pack to be sent to client. The invention captures user ascending ARP request pack in access device to be sent to an ARP proxy answer module to directly respond the answer pack requested by user ARP, to realize the completion of user ARP request on access device.

Description

technical field [0001] The invention relates to a communication method, in particular to a method for reducing user address resolution protocol broadcasts on an access device. Background technique [0002] The broadband access network is rapidly migrating from Asynchronous Transfer Mode (ATM) technology to Ethernet technology. The entire access aggregation network, from the main access device DSLAM to the aggregation switch, is a Layer 2 network, which brings some security issues . The user-side broadcast packet storm problem is a serious security problem. Too many user-side broadcast packets enter the metro aggregation network with Ethernet switches as the core, causing broadcast storms, network failures, and service instability. [0003] Virtual Local Area Network (VLAN) is not only beneficial to network security and preventing network storms, but also can improve the efficiency of network operation. The popularity of Layer 3 switches has created conditions for the applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/46H04L1/00
Inventor 陈爱民
Owner ZTE CORP
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