arp broadcast-send maximum

Function

The arp broadcast-send maximum command configures a rate at which ARP broadcast packets are sent.

The undo arp broadcast-send maximum command restores the default configuration.

By default, a total of 500 ARP broadcast packets are sent per second.

Format

arp broadcast-send maximum maximum-value

undo arp broadcast-send maximum [ maximum-value ]

Parameters

Parameter Description Value
maximum-value

Specifies the number of ARP broadcast packets sent per second.

The value is an integer that ranges from 0 to 3000.

A larger value results in a higher rate of sending ARP packets. This may cause high CPU usage and affect services.

Views

System view

Default Level

2: Configuration level

Task Name and Operations

Task Name Operations
arp write

Usage Guidelines

Usage Scenario

ARP broadcast packets delivered from the sub-interface are replicated to all VLANs. If the number of VLANs is 100 and the number of ARP broadcast packets sent per second is 50, the number of ARP broadcast packets replicated is 5000 (100 x 50). This may cause the peer device to be overloaded with ARP packets. As a result, the downstream device becomes abnormal. When replicating a large number of ARP broadcast packets, the local device may fail to send ARP packets promptly, causing ARP learning failures. In this case, you can set a proper rate for sending ARP broadcast packets to reduce CPU usage.

Precautions

In real-world situations, after a rate at which ARP broadcast packets are sent is configured on a device, the total number of ARP broadcast packets sent by the device is related to board performance.

Example

# Configure the rate of sending ARP broadcast packets as 200.
<HUAWEI> system-view
[~HUAWEI] arp broadcast-send maximum 200
Parent Topic: ARP Configuration Commands
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
< Previous topic Next topic >