Dell PowerEdge VRTX - Manual (Page 688)

688 IPv6 Commands
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\CLI Folders\Dell Plasma-ARC
2+3\new_system_mifs_ARC2_latest\IPv6_Router.fm
D E L L C O N F ID E N T IA L – P R E L IM I N A RY 4 / 3 /1 4 - FO R P R O O F O N LY
Duplicate address detection is suspended on interfaces that are
administratively down. While an interface is administratively down, the
Unicast IPv6 addresses assigned to the interface are set to a pending state.
Duplicate address detection is automatically restarted on an interface when
the interface returns to being administratively up.
An interface returning to administratively up, restarts duplicate address
detection for all of the Unicast IPv6 addresses on the interface. While
duplicate address detection is performed on the link-local address of an
interface, the state for the other IPv6 addresses is still set to TENTATIVE.
When duplicate address detection is completed on the link-local address,
duplicate address detection is performed on the remaining IPv6 addresses.
When duplicate address detection identifies a duplicate address, the state of
the address is set to DUPLICATE and the address is not used. If the duplicate
address is the link-local address of the interface, the processing of IPv6
packets is disabled on the interface and an error SYSLOG message is issued.
If the duplicate address is a global address of the interface, the address is not
used and an error SYSLOG message is issued.
All configuration commands associated with the duplicate address remain as
configured while the state of the address is set to DUPLICATE.
If the link-local address for an interface changes, duplicate address detection
is performed on the new link-local address and all of the other IPv6 address
associated with the interface are regenerated (duplicate address detection is
performed only on the new link-local address).
Note. Since DAD is not supported on NBMA interfaces the command is
allowed but does not impact on an IPv6 tunnel interface of the ISATAP type
it does not impact. The configuration is saved and will impacted when the
interface type is changed on another type on which DAD is supported (for
example, to the IPv6 manual tunnel).
Example
The following example configures five consecutive neighbor solicitation
messages to be sent on VLAN 1 while duplicate address detection is being
performed on the tentative Unicast IPv6 address of the interface. The
example also disables duplicate address detection processing on VLAN 2.
console(config)# interface vlan 1