Configuring Ipv6 Ndp - H3C S3610-28P Operation Manual

Operation Manual – IPv6
H3C S3610&S5510 Series Ethernet Switches
Note:
After an IPv6 site-local address or aggregatable 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. If a link-local address is
manually assigned to an interface, this link-local address takes effect. If the
manually assigned link-local address is removed, the automatically generated
link-local address takes effect.
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 you delete the manually
assigned address, the automatically generated link-local address is validated.
You need to execute the ipv6 address auto link-local command before the undo
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.
The manually configured global unicast address takes precedence over the one
automatically generated. If a global unicast address has been generated on an
interface when you configure another one with the same address prefix, the latter
overwrites the previous one. After that, the overwritten global unicast address will
not be restored even if the manually configured one is removed. The global unicast
address will be generated again based on the address prefix information in the RA
message that the device receives for the next time.

1.4 Configuring IPv6 NDP

1.4.1 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 neighbor
entry.
The device uniquely identifies a static neighbor entry according to the IPv6 address and
the layer 3 interface ID. Currently, there are two configuration methods:
Configure an IPv6 address and link-layer address for a Layer 3 interface.
Configure an IPv6 address and link-layer address for a port in a VLAN.
Chapter 1 IPv6 Basics Configuration
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