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Fit AP V200R010C00 Command Reference

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
reset arp

reset arp

Function

The reset arp command deletes ARP entries in the ARP mapping table.

Format

reset arp { dynamic [ ip ip-address ] | interface interface-type interface-number [ ip ip-address ] | static }

Parameters

Parameter Description Value
dynamic Deletes dynamic ARP entries. -
interface interface-type interface-number
  • interface-type specifies the type of the interface.
  • interface-number specifies the number of the interface.
-
ip ip-address

Deletes dynamic ARP entries of a specified interface and with a specified IP address.

If an interface learns excessive ARP entries, you can specify this parameter to delete a specified ARP entry.

The value is in dotted decimal notation.
static Deletes static ARP entries. -

Views

User view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

If an unauthorized user sends a large number of ARP packets to a device, the device learns a large number of ARP entries in a short period of time, causing the buffer to overflow. As a result, users may fail to access the network. To solve the problem, you can run the reset arp command to delete invalid ARP entries and create new ARP entries to ensure that users can access the network.

Prerequisites

Before using the reset arp command, ensure that the corresponding ARP entries exist.

Configuration Impact

After an ARP entry is cleared, the mapping between the IP address and the MAC address is cleared. As a result, users may fail to assess the network and services may be interrupted.

Precautions

ARP entries are cleared at an interval of at least 20s.

Example

# Delete dynamic ARP entries in the ARP mapping table.

<Huawei> reset arp dynamic

# Delete dynamic ARP entries of VLANIF 10.

<Huawei> reset arp interface vlanif 10
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Updated: 2019-07-18

Document ID: EDOC1100064353

Views: 151137

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