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Default Setting
No IPv6 addresses are defined
Command Mode
Interface Configuration (VLAN)
Command Usage
• If a link local address has not yet been assigned to this interface, this
command will dynamically generate a global unicast address and a link local
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.
• If the router advertisements have the “other stateful configuration” flag set, the
router will attempt to acquire other non-address configuration information
(such as a default gateway) from a DHCP for IPv6 server.
Example
This example assigns two dynamic global unicast address of
2005::212:CFFF:FE0B:4600 and 3FFE:501:FFFF:100:212:CFFF:FE0B:4600 to the
router.
Console(config-if)#ipv6 address autoconfig
Console(config-if)#end
Console#show ipv6 interface
Vlan 1 is up
IPv6 is enable.
Link-local address:
FE80::212:CFFF:FE0B:4600/64
Global unicast address(es):
2005::212:CFFF:FE0B:4600, subnet is 2005:0:0:0::/64
3FFE:501:FFFF:100:212:CFFF:FE0B:4600, subnet is 3FFE:501:FFFF:100::/64
Joined group address(es):
FF01::1/16
FF02::1/16
FF02::1:FF0B:4600/104
MTU is 1500 bytes.
ND DAD is enabled, number of DAD attempts: 1.
ND retransmit interval is 1000 milliseconds
Console#
Related Commands
ipv6 address (41-9)
show ipv6 interface (41-14)
41-11
Basic IP Configuration
41