C
HAPTER
45
| IP Interface Commands
IPv6 Interface
– 1412 –
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
Console#
RELATED COMMANDS
ipv6 enable (1412)
show ipv6 interface (1414)
ipv6 enable This command enables IPv6 on an interface that has not been configured
with an explicit IPv6 address. Use the no form to disable IPv6 on an
interface that has not been configured with an explicit IPv6 address.
SYNTAX
[no] ipv6 enable
DEFAULT SETTING
IPv6 is disabled
COMMAND MODE
Interface Configuration (VLAN)
COMMAND USAGE
â—† This command enables IPv6 on the current VLAN interface and
automatically generates a link-local unicast address. The address prefix
uses FE80, and the host portion of the address is generated by
converting the switch’s MAC address to modified EUI-64 format (see
page 1409). This address type makes the switch accessible over IPv6
for all devices attached to the same local subnet.
â—† If a duplicate address is detected on the local segment, this interface
will be disabled and a warning message displayed on the console.
â—† The no ipv6 enable command does not disable IPv6 for an interface
that has been explicitly configured with an IPv6 address.
EXAMPLE
In this example, IPv6 is enabled on VLAN 1, and the link-local address
FE80::2E0:CFF:FE00:FD/64 is automatically generated by the switch.
Console(config)#interface vlan 1
Console(config-if)#ipv6 enable
Console(config-if)#end
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled
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