UMN:CLI
User Manual
V8102
100
IPv6 Address Types
IPv6 uses multicast addresses instead of the broadcast address. An IPv6 address can be
classified into one of three categories, which Unicast, Multicast and Anycast address. The
Anicast address, a new type of address introduced with RFC 1546, is now used with IPv6.
An anycast address is assigned to multiple interfaces. A packet sent to an anycast ad-
dress is delivered to only one of these interfaces, usually the nearest one.
IPv6 Special Addresses
There are some special addresses without prefix.
-
Unspecified address
: the unspecified address for IPv6
0000 : 0000 : 0000 : 0000 : 0000 : 0000 : 0000 : 0000 (or ::)
-
Localhost address
: the special address for the loopback interface.
0000 : 0000 : 0000 : 0000 : 0000 : 0000 : 0000 : 0001 (or ::1)
-
Link local address
: It is assigned automatically to an interface when IPv6 is enabled.
The link local address is used only on local links for link communication purposes.
These addresses typically begin with
fe80
.
-
Site local address
: These addresses typically begin with
fec0
and are used within a
site. They are not for global use.
-
Multicasting addresses
: Multicast capability is formally added into the IPv6 protocol.
The multicasting addresses begin with
ff0x
, where
x
is any hexadecimal number. An
example of multicast address is
ff02::1
. This stands for all nodes of an address.
You can enable the interface to communicate with another network device on the network
by assigning an IPv6 address.
5.6.3.1
Assigning IPv6 Address to Network Interface
After enabling an interface, assign an IPv6 global address. To assign an IPv6 address to
a network interface, use the following command.
Command
Mode
Description
ipv6 address
X:X::X:X/M
Interface
[MGMT/VLAN/LO]
Assigns an IPv6 global address to an interface.
X:X::X:X/M: IPv6 address/prefix-length
ipv6
address
X:X::X:X/M
anycast
Assigns an IPv6 anycast address to an interface.
To disable an assigned IPv6 address, use the following command.
Command
Mode
Description
no ipv6 address
[
X:X::X:X/M
]
Interface
[MGMT/VLAN/LO]
Clears an IP address assigned to an interface.
