Chapter 27
| IP Interface Commands
IPv6 Interface
– 670 –
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 enable (670)
show ipv6 interface (672)
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 667). 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
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