TCP/IPv6 Configuration and Management Manual (G06.24+)

SCF Reference for NonStop TCP/IPv6
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-008
8-13
IP Address Notation
IP Address Notation
Several attributes defining the SCF ROUTE and SUBNET objects require the
specification of an IP address.
In the IPV4 environment, an IP address contains 32 bits. You represent such an IP
address by using a text string in dotted decimal format:
d.d.d.d
where d is the decimal value of an 8-bit octet. For example:
130.28.88.7
In the IPV6 environment, an IP address contains 128-bits. You represent such an IP
address by using a text string in this format:
x:x:x:x:x:x:x:x
where x is the hexadecimal value of a 16-bit section of the address. Four hexadecimal
numbers represent each 16-bit section. Each of these sections is separated from the
others by colons. For example:
FEDC:BA98:7654:3210:FEDC:BA98:7654:3210
If any 16-bit section contains leading zeros, those zeros need not be entered. For
example:
1070:0000:0000:0000:0000:0800:200C:417B
can be simplified to:
1070:0:0:0:0:800:200C:417B
When long strings of zeros appear in an address, double colons (::) can be used to
represent several 16-bit sections containing all zeros. For example:
1070:0:0:0:0:800:200C:417B
can be further simplified to:
1070::800:200C:417B
The double colon can appear only once in an address. It can, however, be used to
represent both leading and trailing zeros. For example, a loopback address of
0:0:0:0:0:0:0:1
could be written:
::1
IPv6 address prefixes are represented using the Classless Inter-Domain Routing
(CIDR) notation. This notation has this format:
ipv6-address/prefix-length