Zte ZXR10 T1200, Руководство пользователя

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Chapter 2 IPv6 Basic Configuration
an anycast address shall be explicitly configured to identify an
anycast address.
Address Expression Way
An IPv4 address is expressed in four parts separated by dots, that
is, four numbers separated by dots. The following are some legal
IPv4 addresses expressed by decimal integer: 0.5.3.1, 127.0.0.1,
201.199.244.101.
An IPv4 address is expressed as a group of four 2-bit hex integers
or four 8-bit binary integers, of which the latter one is seldom
used.
The length of an IPv6 address is four times greater than an IPv4
address, and the complicacy of expression for an IPv6 address is
also four times greater than an IPv4 address. An IPv6 address
can be basically expressed as X:X:X:X:X:X:X:X, among which X is
4-bit hex integers (16-bit). Each number contains four bits, each
integer contains four numbers and each address contains eight
integers. There are totally 128 bits (4 x 4 x 8 = 128). The following
are some legal IPv6 addresses:
CDCD: 910A:2222:5498:8475:1111:3900:2020
1030:0:0:0:C9B4:FF12:48AA:1A2B
2000:0:0:0:0:0:0:1
All these integers are hex integers and those from A to F represent
10 to 15. Each integer of an address must be indicated except for
the starting zero. This is a relatively standard way to express an
IPv6 address. Apart from this, there are two more ways that are
clearer and easier to use.
Some IPv6 addresses contain a succession of zeros, similar to the
second and the third examples as mentioned above. In this case,
the succession of zeros can be represented by “spacing”, as pro-
vided in the relevant standard.
That is to say, the address 2000:0:0:0:0:0:0:1 can be expressed
as 2000::1, of which the two colons mean that the address can
be extended to a complete 128-bit address. In this method, only
when the 16-bit group is all-zero, can it be substituted by two
colons, which can only be used once in the address.
Table 9 shows examples for compressed formats of IPv6 ad-
dresses.
T
ABLE
9 IP
V
6 A
DDRESS
C
OMPRESSION
Add Type Normal Format Compressed Format
Unicast address 1080:0:0:0:8:800:200C:417
A 1080::8:800:200C:417A
Multicast address FF01:0:0:0:0:0:0:101 FF01::101
Loopback address 0:0:0:0:0:0:0:1 ::1
Unspecified address 0:0:0:0:0:0:0:0
::
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