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apply to one or more specific interfaces, and are therefore specified by this
command at the interface configuration level.
• If a link-local address has not yet been assigned to this interface, this
command will assign the specified static global unicast address and also
dynamically generate a link-local unicast address for the interface. (The
link-local address is made with an address prefix of FE80 and a host portion
based the router’s MAC address in modified EUI-64 format.)
• If a duplicate address is detected, a warning message is sent to the console.
Example
This example uses the general network prefix of 2009:DB9:2229::/48 used in an
earlier example, and then specifies the subsequent prefix bits 0:0:0:7279::/64, and
finally the host address portion of 79.
Console(config)#interface vlan 1
Console(config-if)#ipv6 address rd 0:0:0:7279::79/64
Console(config-if)#end
Console#show ipv6 interface
Vlan 1 is up
IPv6 is enable.
Link-local address:
FE80::200:E8FF:FE90:0/64
Global unicast address(es):
2009:DB9:2229:7279::79, subnet is 2009:DB9:2229:7279::/64
Joined group address(es):
FF01::1/16
FF02::1/16
FF02::1:FF00:79/104
FF02::1:FF90:0/104
MTU is 1500 bytes.
ND DAD is enabled, number of DAD attempts: 1.
ND retransmit interval is 1000 milliseconds
Console#
Related Commands
ipv6 address eui-64 (41-12)
ipv6 address autoconfig (41-10)
show ipv6 interface (41-14)
ip address (41-3)
ipv6 address autoconfig
This command enables stateless autoconfiguration of IPv6 addresses on an
interface and enables IPv6 on the interface. The network portion of the address is
based on prefixes received in IPv6 router advertisement messages; the host portion
in based on the modified EUI-64 form of the interface identifier (i.e., the router’s
MAC address). Use the
no
form to remove the address generated by this command.
Syntax
[no] ipv6 address autoconfig
41-10
IP Interface Commands
41