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Fat AP and Cloud AP V200R010C00 Command Reference

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vrrp gratuitous-arp timeout

vrrp gratuitous-arp timeout

Function

The vrrp gratuitous-arp timeout command sets the timeout interval at which the master sends gratuitous ARP packets.

The undo vrrp gratuitous-arp timeout command restores the default timeout interval at which the master sends gratuitous ARP packets.

By default, the master sends gratuitous ARP packets every 120s.

Format

vrrp gratuitous-arp timeout time

undo vrrp gratuitous-arp timeout

Parameters

Parameter Description Value
timeout time

Specifies the timeout interval at which the master sends gratuitous ARP packets.

The value is an integer that ranges from 30 to 1200, in seconds.

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

After an active/standby switchover is performed, the master in a VRRP group periodically sends gratuitous ARP packets to update MAC address entries on the downstream switch.

Precautions
  • If a small timeout interval is used, bandwidth resources are consumed. If a large timeout interval is used, MAC address entries on the downstream switch cannot be updated immediately.

  • The timeout interval at which the master sends gratuitous ARP packets must be shorter than the aging time of MAC entries on user devices.

Set the timeout interval based on actual networking:

  • To restore the default timeout interval at which the master sends gratuitous ARP packets, run the undo vrrp gratuitous-arp timeout command in the system view.

  • If gratuitous ARP packet do not need to be sent, run the vrrp gratuitous-arp timeout disable command in the system view.

Example

# Set the timeout interval at which the master sends gratuitous ARP packets to 100 seconds.

<Huawei> system-view
[Huawei] vrrp gratuitous-arp timeout 100
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Updated: 2019-11-21

Document ID: EDOC1100064352

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