Ipv6 Address Auto Link-Local - 3Com Switch 4500 Family Manual

Method I:
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface vlan-interface 1
[Sysname-Vlan-interface1] ipv6 address 2001::1/64
Method II:
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Vlan-interface 1
[Sysname-Vlan-interface1] ipv6 address 2001::1 64

ipv6 address auto link-local

Syntax
ipv6 address auto link-local
undo ipv6 address auto link-local
View
VLAN interface view
Parameters
None
Description
Use the ipv6 address auto link-local command to automatically generate a link-local address for an
interface.
Use the undo ipv6 address auto link-local command to remove the automatically generated link-local
address for an interface.
By default, a link-local address is generated automatically after a site-local IPv6 address or global
unicast address is configured for an interface.
Note that:
After an IPv6 site-local address or aggregatable global unicast address is configured for an
interface, a link-local address is 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 undo ipv6 address auto link-local command can be used only after the ipv6 address auto
link-local command is executed. However, if an IPv6 site-local address or aggregatable 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
aggregatable global unicast address is configured, the interface has no link-local address.
Manual assignment takes precedence over automatic generation. That is, if you first adopt
automatic generation and then manual assignment, the manually assigned link-local address will
overwrite the automatically generated one. If you first adopt manual assignment and then
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 you delete the manually
assigned address, the automatically generated link-local address is validated. For manually
assignment of an IPv6 link-local address, refer to the ipv6 address link-local command.
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