Cisco ASA 5505 Configuration Manual page 257

Chapter 8 Configuring Interfaces
Note
Stateless autoconfiguration—In the Interface IPv6 Addresses area, check the Enable address
•
autoconfiguration check box.
Enabling stateless autconfiguration on the interface configures IPv6 addresses based upon prefixes
received in Router Advertisement messages. A link-local address, based on the Modified EUI-64
interface ID, is automatically generated for the interface when stateless autoconfiguration is
enabled.
Manual configuration—To manually configure a global IPv6 address:
•
a.
b.
c.
d.
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.
• RA Lifetime—Enter the amount of time that IPv6 router advertisement transmissions are considered
valid. Valid values are from 0 to 9000 seconds. The default is 1800 seconds. Router advertisement
transmissions include a preference level and a lifetime field for each advertised router address.
These transmissions provide route information and indicate that the router is still operational to
network hosts.
RA Interval—Enter the interval between IPv6 router advertisement transmissions. Valid values are
•
from 3 to 1800 seconds. The default is 200 seconds. To list the router advertisement transmission
interval in milliseconds, check the RA Interval in Milliseconds check box. Valid values are from
500 to 1800000 milliseconds.
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If you do not want to configure a global IPv6 address, you can configure the link-local addresses
either automatically by checking the Enable IPv6 check box, or manually by entering a value
in the Link-local address field in the Interface IPv6 Addresses area. A link-local address should
start with FE8, FE9, FEA, or FEB, for example fe80::20d:88ff:feee:6a82. See the
Addresses" section on page A-5
If you configure a global IPv6 address (or manually configure a link-local address), checking or
unchecking the Enable IPv6 check box does not affect how IPv6 operates; IPv6 continues to be
enabled.
In the Interface IPv6 Addresses area, click Add.
The Add IPv6 Address for Interface dialog box appears.
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
more information about IPv6 addressing.
(Optional) To use the Modified EUI-64 interface ID in the low order 64 bits of the address,
check the EUI-64 check box.
Click OK.
Completing Interface Configuration (All Models)
for more information about IPv6 addressing.
"IPv6 Addresses" section on page A-5
Cisco ASA 5500 Series Configuration Guide using ASDM
"IPv6
for
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