dhcpv6 snooping user-bind detect retransmit

Function

The dhcpv6 snooping user-bind detect retransmit command sets the number of times and interval at which the DAD NS packets are sent for DHCPv6 snooping.

The undo dhcpv6 snooping user-bind detect retransmit command restores the default number of times and interval at which the DAD NS packets are sent for DHCPv6 snooping.

By default, a DAD NS packet is sent up to three times at the interval of 180 seconds.

Format

dhcpv6 snooping user-bind detect retransmit times interval interval

undo dhcpv6 snooping user-bind detect retransmit

Parameters

Parameter	Description	Value
times	Specifies the number of times a DAD NS packet is sent.	The value is an integer that ranges from 1 to 10.
interval interval	Specifies the interval for sending DAD NS packets.	The value is an integer that ranges from 60 to 86400, in seconds.

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

After the function of enabling DHCPv6 snooping to detect whether the confirm-client is online is enabled using the dhcpv6 snooping user-bind detect confirm-client enable command, the DHCPv6 snooping-enabled device will periodically send DAD NS packets to detect whether the confirm-client is online and delete the DHCPv6 snooping entry of the offline confirm-client. You can change the number of times and interval at which the DHCPv6 snooping-enabled device sends DAD NS packets as required.

Prerequisites

The dhcp snooping enable ipv6 command has been executed to enable DHCPv6 snooping.

Example

# Set the number of times and interval at which the DAD NS packets are sent to 2 and 60 seconds, respectively.

<HUAWEI> system-view
[HUAWEI] dhcp enable
[HUAWEI] dhcp snooping enable ipv6
[HUAWEI] dhcpv6 snooping user-bind detect retransmit 2 interval 60