IBM SC30-3865-04 Network Router User Manual


 
Broadcast addressing has been replaced by multicast addressing in IPv6.
IPv6 Address Format
The IPv6 address is composed of 128 bits. These bits are written as eight 16-bit
integers separated by colons.
Example:
ABCD:1234:0000:1234:5555:FFEE:7777:0123
You can use the following simplifying rules:
v Skip leading zeroes.
Example:
ABCD:1234:0:1234:0:FFEE:7777:123
v Inside an address, a set of consecutive, null 16-bit numbers can be replaced by
two colons.
Example:
ABCD:1234::1234:5555:FFEE:7777:123
1234::7899
The double colon can be used only once inside the address.
v When dealing with a mixed environment of IPv4 and IPv6 nodes, you can use
the form x:x:x:x:x:x:d.d.d.d
, where the x’s are hexadecimal values of the six high-order 16-bit pieces of the
address, and the d’s are the decimal values of the four low-order 8-bit pieces of
the address in standard IPv4 representation.
Example:
ABCD:1234::1234:5555:FFEE:1.2.3.4
::1.2.3.4
Text Representation of Address Prefixes
An IPv6 address prefix is represented by the notation:
IPv6-address/prefix-length
The IPv6 address can use any of the notations listed in “IPv6 Address Format” and
the prefix length is a decimal value specifying how many of the leftmost contiguous
bits of the address comprise the prefix.
Example:
ABCD:1234::1234:5555:FFEE:1.2.3.4/64
IPv6 Header Format
The IPv6 header has a total of 8 fields, eliminating some IPv4 fields such as
checksum and fragmentation.
Using IPv6
378
MRS V3.2 Protocol Config Ref Vol 2