Clear Ipv6 Dhcp Conflict - Cisco Catalyst 3560X-24P Command Reference Manual

Cisco ios release 12.2(55)se

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clear ipv6 dhcp conflict

Use the clear ipv6 dhcp conflict privileged EXEC command on the switch stack or on a standalone

switch to clear an address conflict from the Dynamic Host Configuration Protocol for IPv6 (DHCPv6)

server database.

This command is available only if you have configured a dual IPv4 and IPv6 Switch Database

Management (SDM) template on the switch. This command is not supported if the switch is running the

LAN base feature set.

Syntax Description

IPv6-address

No default is defined.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

To configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 {default |

vlan} global configuration command, and reload the switch.

When you configure the DHCPv6 server to detect conflicts, it uses ping. The client uses neighbor

discovery to detect clients and reports to the server through a DECLINE message. If an address conflict

is detected, the address is removed from the pool, and the address is not assigned until the administrator

removes the address from the conflict list.

If you use the asterisk (*) character as the address parameter, DHCP clears all conflicts.

This example shows how to clear all address conflicts from the DHCPv6 server database:

Switch# clear ipv6 dhcp conflict *

Related Commands

show ipv6 dhcp

Catalyst 3750-X and 3560-X Switch Command Reference

clear ipv6 dhcp conflict {* | IPv6-address}

Clear all address conflicts.

Clear the host IPv6 address that contains the conflicting address.

Modification

This command was introduced.

Displays address conflicts found by a DHCPv6 server, or reported through

a DECLINE message from a client.

Catalyst 3750-X and 3560-X Switch Cisco IOS Commands