show ipv6 dad

show ipv6 dad {[{{vr} vr_name {ip_address} | vr all | [ { vlan } vlan_name | vlan vlan_list ] {tentative | valid | duplicate} | {{vr} vr_name} ipaddress] | {tunnel} tunnel_name}

Description

Displays the configuration and run time status for the DAD feature on the specified IPv6 interface.

Syntax Description

vr_name Specifies a VR for which to display the DAD information.
ip_address Specifies an IPv6 address for which to display the DAD information.
vlan_name Specifies a VLAN (Virtual LAN) name for which to display the DAD information.
vlan_list Specifies a VLAN list of IDs to display the DAD information.
tentative Displays information for IPv6 interfaces for which the status is up and the DAD check is incomplete.
valid Displays information for IPv6 interfaces for which the status is up, the DAD check is complete, and no duplicate IPv6 addresses were detected.
duplicate Displays information for IPv6 interfaces for which the status is down because a duplicate IPv6 address was detected.

Default

If you do not specify a VR or VRF, the command applies to the current VR context.

Usage Guidelines

The vr all option displays DAD information for all IPv6 interfaces on the switch.

Example

The following example displays the DAD feature status for all interfaces in the current VR context:

# show ipv6 dad
IPv6 Duplicate Address Detection
DAD Status                 : On
Max Solicitation Attempts  : 1
Virtual Router         Interface              Flags    IP Address
Conflict MAC         Failures
--------------------------------------------------------------------------------
VR-Default             exG-v154               -E-U    2001:db8:a::123/64
00:00:00:00:00:00       0
VR-Default             exL-v188               DE-U    2001:db8:b::123/64
00:04:96:12:ae:60       1
Flags : (D) Duplicate address detected, (T) Tentative address,
(E) Interface enabled, (L) Loopback enabled, (U) Interface up

History

This command was first available in ExtremeXOS 12.6.

The vlan_list variable was added in ExtremeXOS 16.1.

Platform Availability

This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.