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16-14
Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter 16 Completing Interface Configuration (TransparentMode, 8.3 and Earlier)
Completing Interface Configuration in Transparent Mode (8.3 and Earlier)
Step 4 (Optional) To enforce the use of Modified EUI-64 format interface identifiers in IPv6 addresses on a
local link, check the Enforce EUI-64 check box.
See the “Modified EUI-64 Interface IDs” section on page 16-6 for more information.
Step 5 To configure the global IPv6 address:
a. In the Interface IPv6 Addresses area, click Add.
The Add IPv6 Address for Interface dialog box appears.
b. In the Address/Prefix Length field, enter the global IPv6 address and the IPv6 prefix length. For
example, 2001:0DB8::BA98:0:3210/48. See the “IPv6 Addresses” section on page A-5 for more
information about IPv6 addressing.
c. Click OK.
Step 6 (Optional) In the top area, customize the IPv6 configuration by configuring the following options:
• DAD Attempts—This setting configures the number of consecutive neighbor solicitation messages
that are sent on an interface while DAD is performed on IPv6 addresses. Valid values are from 0 to
600. A zero value disables DAD processing on the specified interface. The default is one message.
• NS Interval—Enter the neighbor solicitation message interval. The neighbor solicitation message
requests the link-layer address of a target node. Valid values are from 1000 to 3600000 milliseconds.
The default is 1000 milliseconds.
• Reachable Time—Enter the amount of time in seconds that a remote IPv6 node is considered
reachable after a reachability confirmation event has occurred. Valid values are from 0 to 3600000
milliseconds. The default is zero. A configured time enables the detection of unavailable neighbors.
Shorter times enable detection more quickly; however, very short configured times are not
recommended in normal IPv6 operation.
Step 7 Click OK.
You return to the Configuration > Device Setup > Interfaces pane.