H3C Technologies H3C S7500E Series Switches - Manual (Page 133)

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z The undo ipv6 address auto link-local command can only remove the link-local addresses
generated through the ipv6 address auto link-local command. 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.
z The manually configured global unicast address takes precedence over the one automatically
generated. If a global unicast address has been automatically generated on an interface when you
manually configure another one with the same address prefix, the latter overwrites the previous
one. After that, the overwritten automatic global unicast address will not be restored even if the
manual one is removed. Instead, a new global unicast address will be automatically generated
again based on the address prefix information in the RA message that the interface receives for
the next time.
z Executing the undo ipv6 address auto command removes all the automatically-generated global
unicast addresses from an interface. The automatically generated link-local address on the
interface can be removed only when no IPv6 site-local address or global unicast address exists,
and the ipv6 address auto link-local command is not configured.
Configuring IPv6 NDP
Configuring a Static Neighbor Entry
The IPv6 address of a neighbor node can be resolved into a link-layer address dynamically through NS
and NA messages or through a manually configured static neighbor entry.
The device uniquely identifies a static neighbor entry according to the neighbor IPv6 address and the
local Layer 3 interface ID. Currently, there are two configuration methods:
z Associate a neighbor IPv6 address and link-layer address with a Layer 3 interface.
z Associate a neighbor IPv6 address and link-layer address with a port in a VLAN.
Follow these steps to configure a static neighbor entry:
To do... Use the command... Remarks
Enter system view system-view —
Configure a static
neighbor entry
ipv6 neighbor ipv6-address mac-address { vlan-id
port-type port-number | interface interface-type
interface-number }
Required
You can adopt either of the two methods above to configure a static neighbor entry.