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Method and device for deleting invalid arp entries

A technology of ARP entries and invalid addresses, which is applied in the field of network communication, can solve problems such as accumulation of invalid ARP entries, network equipment downtime, long time consumption, etc., to quickly delete invalid ARP entries, quickly delete, and improve efficiency Effect

Active Publication Date: 2019-02-19
HANGZHOU DPTECH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this asynchronous method, it is likely that too many invalid ARP entries will accumulate, and it will take a long time to completely delete invalid ARP entries, such as 30 minutes
Therefore, the existing method for deleting invalid ARP entries has low efficiency, and may also cause network equipment to go down, and the security is low

Method used

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  • Method and device for deleting invalid arp entries
  • Method and device for deleting invalid arp entries
  • Method and device for deleting invalid arp entries

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Embodiment Construction

[0046] The exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the application as detailed in the appended claims.

[0047] The terms used in this application are only for the purpose of describing specific embodiments, and are not intended to limit the application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and...

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Abstract

The present application provides a method and device for deleting invalid ARP entries. The method includes: when the timer reaches the timeout time, delete invalid ARP entries on N ARP linked lists, where N and M are both natural numbers greater than 1, And N is not greater than M; Determine the quantity of the remaining invalid ARP entries currently saved; According to the quantity of the remaining invalid ARP entries, set the timeout time of the timer, the timeout time increases with the remaining invalid ARP table The number of items increases and decreases. Applying the method of the embodiment of the present application realizes deleting invalid ARP entries in a safer and faster manner.

Description

Technical field [0001] This application relates to the field of network communication technology, and in particular to a method and device for deleting invalid ARP entries. Background technique [0002] ARP (Address Resolution Protocol, address resolution protocol) entries are used to store the mapping relationship between IP addresses and MAC addresses. Network devices (such as switches or routers) can store multiple ARP entries, and ARP entries can be stored In the ARP linked list, there can be multiple ARP linked lists in the network device. Since the number of ARP entries that can be stored in the network device is fixed, invalid ARP entries need to be deleted to make room for newly created ARP entries. In the prior art solution, for the deletion of invalid ARP entries, two methods, synchronous and asynchronous, can be used. [0003] For example, the synchronization method is to traverse all ARP entries when creating a new ARP entry (when the total number of existing ARP entr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L29/12
CPCH04L61/103H04L67/5682
Inventor 刘成乾余刚
Owner HANGZHOU DPTECH TECH