IPv6 Addressing Commands 635
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\CLI Folders\Dell Contax
CLI\files\IPv6_Addressing.fm
DELL CONFIDENTIAL – PRELIMINARY 5/15/12 - FOR PROOF ONLY
When DAD identifies a duplicate address, the address state 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 message is displayed.
All configuration commands associated with the duplicate address remain as
configured while the address state is set to DUPLICATE.
If the Link Local address for an interface changes, DAD is performed on the
new Link Local address and all of the other IPv6 address associated with the
interface are regenerated (DAD is performed only on the new Link Local
address).
Configuring a value of 0 with the ipv6 nd dad attempts Interface
Configuration mode command disables duplicate address detection
processing on the specified interface. A value of 1 configures a single
transmission without follow-up transmissions. The default is 1 message.
Until the DAD process is completed, an IPv6 address is in the tentative state
and cannot be used for data transfer. It is recommended to limit the
configured value.
Example
The following example configures the number of consecutive neighbor
solicitation messages sent during DAD processing to 2 on gigabitethernet
port
1/0/
9.
Console (config)#
interface
gigabitethernet 1/0/9
Console (config-if)#
ipv6 nd dad attempts
2
ipv6 host
Use the ipv6 host Global Configuration mode command to define a static
host name-to-address mapping in the host name cache. Use the no form of
this command to remove the host name-to-address mapping.
Syntax
ipv6 host name
ipv6-address1 [ipv6-address2...ipv6-address4]
no ipv6 host name
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