H3C S5600 Series Operation Manual page 1117

To do...
Manually assign an
IPv6 address
Configure an IPv6
global unicast
address or site-local
Adopt the EUI-64
address
format to form an IPv6
address
Automatically
generate a link-local
address
Configure an IPv6
link-local address
Manually assign a
link-local address for
an interface.
If an IRF fabric port on an H3C S5600 switch is enabled with IRF fabric, no IPv6 address can be
configured for the switch. To do so, you need to disable IRF fabric on all IRF fabric ports.
IPv6 unicast addresses can be configured for only one VLAN interface on an H3C S5600 Ethernet
switch. The total number of global unicast addresses and site-local addresses on the VLAN
interface can be up to four.
After an IPv6 site-local address or global unicast address is configured for an interface, a link-local
address will be generated automatically. The automatically generated link-local address is the
same as the one generated by using the ipv6 address auto link-local command.
The manual assignment takes precedence over the automatic generation. That is, if you first adopt
the automatic generation and then the manual assignment, the manually assigned link-local
address will overwrite the automatically generated one. If you first adopt the manual assignment
and then the automatic generation, the automatically generated link-local address will not take
effect and the link-local address of an interface is still the manually assigned one. If the manually
assigned link-local address is deleted, the automatically generated link-local address takes effect.
You must have carried out the ipv6 address auto link-local command before you carry out the
undo ipv6 address auto link-local command. However, if an IPv6 site-local address or global
unicast address is already configured for an interface, the interface still has a link-local address
because the system automatically generates one for the interface. If no IPv6 site-local address or
global unicast address is configured, the interface has no link-local address.
Use the command...
ipv6 address { ipv6-address
prefix-length |
ipv6-address/prefix-length }
ipv6 address
ipv6-address/prefix-length eui-64
ipv6 address auto link-local
ipv6 address ipv6-address
link-local
1-10
Remarks
Use either command
By default, no
site-local address or
global unicast
address is configured
for an interface.
Note that the prefix
specified by the
prefix-length
argument in an
EUI-64 address
cannot exceed 64
bits in length.
Optional
By default, after an
IPv6 site-local
address or global
unicast address is
configured for an
interface, a link-local
address will be
generated
automatically.