Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 11-05-2007, Руководство по установке

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Example 30.4 IPv6 Address Specifying the Prefix Length
fe80::10:1000:1a4/64
IPv6 knows about several predefined types of prefixes. Some of these are shown in
Table 30.4, “Various IPv6 Prefixes” (page 554).
Table 30.4 Various IPv6 Prefixes
Definition Prefix (hex)
IPv4 addresses and IPv4 over IPv6 compatibility addresses. These
are used to maintain compatibility with IPv4. Their use still re-
00
quires a router able to translate IPv6 packets into IPv4 packets.
Several special addresses, such as the one for the loopback device,
have this prefix as well.
Aggregatable global unicast addresses. As is the case with IPv4,
an interface can be assigned to form part of a certain subnetwork.
2
or
3
as the first
digit
Currently, there are the following address spaces:
2001::/16
(production quality address space) and
2002::/16
(6to4 address
space).
Link-local addresses. Addresses with this prefix should not be
routed and should therefore only be reachable from within the
same subnetwork.
fe80::/10
Site-local addresses. These may be routed, but only within the
network of the organization to which they belong. In effect, they
fec0::/10
are the IPv6 equivalent of the current private network address
space, such as
10.x.x.x
.
These are multicast addresses.
ff
A unicast address consists of three basic components:
Public Topology
The first part (which also contains one of the prefixes mentioned above) is used to
route packets through the public Internet. It includes information about the company
or institution that provides the Internet access.
554 Installation and Administration