IPv6: The New Internet Protocol
49
The first 16 bits of a ULA are always fd00. ULAs are designed
exclusively for communication in the local network. User data
can also be transmitted using ULAs.
IPv6 Addresses with Special Properties
When IPv6 is used, each network interface generally receives
several IPv6 addresses. Each address has its own properties,
which can be identified from the first bits (the “prefix”).
A number of important IPv6 address ranges and their proper-
ties are described here in simplified form:
•
2001:... designates global IPv6 addresses that are as-
signed by the Internet Service Provider. IPv6 addresses
can only be assigned by the Internet Service Provider if
that provider supports IPv6 on your line. The FRITZ!Box
and every other connected computer receives an IPv6
address of its own with this prefix for Internet communi-
cation.
•
2002:... designates global IPv6 addresses when a 6to4
tunnel is used. If your FRITZ!Box uses IPv6 by means of a
6to4 tunnel, the FRITZ!Box and each and every connect-
ed computer uses an IPv6 address of its own with this
prefix for Internet communication.
•
fd00:... designates locally generated IPv6 addresses
(Unique Local Addresses - ULA). IPv6 addresses with this
prefix cannot be used for Internet communication, but
only within a local network. If no globally valid prefix is
available, for instance because no Internet connection
is currently active, the FRITZ!Box can assign ULAs in the
local network.
•
fe80:... designates what “link-local IPv6 addresses (Link
Local Addresses)”, which can only be used within a net-
work segment. IPv6 addresses with this prefix are gene-
rated by the network interface itself in order to communi-
cate with network interfaces in the immediate vicinity.
For the most part these addresses are used to exchange
status messages. These addresses are not designed for
the exchange of user data.
FBoxCable-6320-2-e.fm Seite 49 Freitag, 27. Mai 2011 3:21 15
Содержание FRITZ!Box 6320 Cable
Страница 1: ...Installation Configuration and Operation FRITZ Box 6320 Cable ...
Страница 140: ...140 FBoxCable 6320 2 e fm Seite 140 Freitag 27 Mai 2011 3 21 15 ...
Страница 141: ...141 FBoxCable 6320 2 e fm Seite 141 Freitag 27 Mai 2011 3 21 15 ...
Страница 142: ...142 Index FBoxCable 6320 2 e fm Seite 142 Freitag 27 Mai 2011 3 21 15 ...
Страница 143: ...Index 143 FBoxCable 6320 2 e fm Seite 143 Freitag 27 Mai 2011 3 21 15 ...
Страница 144: ...144 Index FBoxCable 6320 2 e fm Seite 144 Freitag 27 Mai 2011 3 21 15 ...
Страница 145: ...Index 145 FBoxCable 6320 2 e fm Seite 145 Freitag 27 Mai 2011 3 21 15 ...