Show Ipv6 Dhcp Conflict - Cisco catalyst 3750 Command Reference Manual
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Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
show ipv6 dhcp conflict
Use the show ipv6 dhcp conflict privileged EXEC commandto display address conflicts found by a
Dynamic Host Configuration Protocol for IPv6 (DHCPv6) server when addresses are offered to the
client.
This command is available only if you have configured a dual IPv4 and IPv6 Switch Database
Note
Management (SDM) template on the switch.
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Release
12.2(46)SE
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.
Examples
This is an example of the output from the show ipv6 dhcp conflict command:
Switch# show ipv6 dhcp conflict
Pool 350, prefix 2001:1005::/48
Related Commands
Command
ipv6 dhcp pool
clear ipv6 dhcp
conflict
OL-8552-07
show ipv6 dhcp conflict
Modification
This command was introduced.
2001:1005::10
Description
Configures a DHCPv6 pool and enters DHCPv6 pool configuration mode.
Clears an address conflict from the DHCPv6 server database.
show ipv6 dhcp conflict
Catalyst 3750 Switch Command Reference
2-613
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