C
HAPTER
44
| IP Interface Commands
IPv6 Interface
– 1400 –
Joined group address(es):
FF02::1:FF00:72
FF02::1:FF00:FD
FF02::1
IPv6 link MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 3.
ND retransmit interval is 1000 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 milliseconds
ND advertised router lifetime is 1800 seconds
Console#
RELATED COMMANDS
ipv6 address eui-64 (1401)
ipv6 address autoconfig (1400)
show ipv6 interface (1407)
ip address (1388)
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 switch’s MAC address). Use the no form to
remove the address generated by this command.
SYNTAX
[no] ipv6 address autoconfig
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 (if a global
prefix is included in received router advertisements) 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 switch’s MAC
address in modified EUI-64 format.)
◆ If a duplicate address is detected, a warning message is sent to the
console.
◆ When DHCPv6 is restarted, the switch may attempt to acquire an IP
address prefix through stateful address autoconfiguration. If the router
advertisements have the “other stateful configuration” flag set, the
switch may also attempt to acquire other non-address configuration
information (such as a default gateway) when DHCPv6 is restarted.
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