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Method for preventing mac address drifting in dhcp network and switching equipment

A MAC address and MAC address table technology, applied in the field of preventing MAC address drift, method and switching equipment, can solve the problems of heavy workload, low utilization rate of IP address in DHCP network, and failure to recycle IP address in time, so as to avoid drift , the effect of improving safety

Active Publication Date: 2021-06-29
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the number of legitimate hosts is large, the workload of manually binding MAC addresses is large, and when one or more legitimate hosts go offline, the IP addresses bound to the offline legitimate hosts cannot be recovered in time. Causes low utilization of IP addresses in the DHCP network

Method used

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  • Method for preventing mac address drifting in dhcp network and switching equipment
  • Method for preventing mac address drifting in dhcp network and switching equipment
  • Method for preventing mac address drifting in dhcp network and switching equipment

Examples

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Embodiment Construction

[0023] The method and switching device for preventing MAC address drifting in the DHCP network provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0024] The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations.

[0025] The terms "first" and "second" in the specification and drawings of the present application are used to distinguish different objects, or to distinguish different processes for the same object, rather than to describe a specific sequence of objects.

[0026] In addition, the terms "including" and "having" mentioned in the description of the present application and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, m...

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Abstract

This application provides a method and switching equipment for preventing MAC address drift in a DHCP network, which relates to the field of data communication, and can prevent the MAC address of a host bound with an assigned IP address from drifting under the premise that the IP address can be dynamically allocated. . The method includes: after the host obtains the IP address of the Internet protocol, if the switching device has configured a DHCP monitoring function, then the switching device establishes a DHCP monitoring table; if the first port has configured a MAC address static binding function, then the switching device establishes a static MAC address table; the switching device configures the prohibition migration flag for the DHCP snooping table; wherein, the DHCP snooping table includes the IP address of the host, the media access control MAC address and the first port of the host, and the static MAC address table includes the MAC address, the first port, and the static Binding flag, the first port is the port connected to the host in the switching device, the static binding flag prohibits the switching device from modifying the static MAC address table, and the migration prohibition flag prohibits the switching device from modifying the DHCP listening table.

Description

technical field [0001] The present application relates to the field of data communication, in particular to a method and switching equipment for preventing MAC address drift in a DHCP network. Background technique [0002] Such as figure 1 As shown, in a network (hereinafter referred to as the DHCP network) formed by dynamic host configuration protocol (dynamic host configuration protocol, DHCP) snooping technology (hereinafter referred to as the DHCP network), the switching device is connected to the legal host through port 1, and connected to the server through port 2. After the legal host obtains the Internet Protocol (Internet Protocol, IP) address from the server through the switching device, the switching device can establish a Media Access Control (MAC) that includes the assigned IP address, port 1, and the legal host. The DHCP monitoring binding table of the address, so that the switching device forwards signaling packets and traffic packets (used to carry service d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12
CPCH04L61/5007H04L61/5053H04L61/5014H04L61/5076H04L2101/622
Inventor 张隆伟景咸刚
Owner MAIPU COMM TECH CO LTD
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