Ruijie RG-RAP73Pro Cookbook page 181

Web-based Configuration Guide
4.17.1 Overview
Internet Protocol Version 6 (IPv6) is the next generation IP protocol designed by the Internet Engineering Task
Force (IETF) to replace IPv4 and solve the IPv4 problems such as address depletion.
4.17.2 IPv6 Basic
1.
IPv6 Address Format
IPv6 increases the length of the address from 32 bits in IPv4 to 128 bits, and therefore has a larger address
space than IPv4.
The basic format of an IPv6 address is X:X:X:X:X:X:X:X. The 128-bit IPv6 address is divided into eight 16-bit
sections that are separated by colons (:), and 16 bits in each section are represented by four hexadecimal
characters (0–9 and A–F). Each X represents a 4-character hexadecimal number.
For example: 2001:ABCD:1234:5678:AAAA:BBBB:1200:2100, 800:0:0:0:0:0:0:1, 1080:0:0:0:8:800:200C:417A
The number 0 in the IPv6 address can be abbreviated as follows:

The starting 0s can be omitted. For example, 2001:00CD:0034:0078:000A:000B:1200:2100 can be written
as 2001:CD:34:78:A:B:1200:2100.

Consecutive 0s can be replaced by two colons (::). For example, 800:0:0:0:0:0:0:1 can be written as 800::1.
Consecutive 0s can be replaced by two colons only when the 16-bit section contains all 0s, and the two
colons can only appear once in the address.
2. IPv6 Prefix
An IPv6 address consists of two parts:

Network prefix: It contains n bits, and is equivalent to the network ID in an IPv4 address.

Interface identifier: It contains (128 - n) bits, and is equivalent to the host ID in an IPv4 address.
The length of the network prefix is separated from the IPv6 address by a slash (/). For example,
12AB::CD30:0:0:0:0/60 indicates that the length of the prefix used for routing in the address is 60 bits.
3.
Special IPv6 Address
There are also some special IPv6 addresses, for example:
fe80::/8 is a link local address, and equivalent to 169.254.0.0/16 in IPv4.
fc00::/7 is a local address, and similar to 10.0.0.0/8, 172.16.0.0/16, or 192.168.0.0/16 in IPv4.
ff00::/12 is a multicast address, and similar to 224.0.0.0/8 in IPv4.
4.
N/AT66
IPv6-to-IPv6 Network Address Translation (N/AT66) is the process of converting the IPv6 address in an IPv6
packet header to another IPv6 address. N/AT66 prefix translation is an implementation of N/AT66. It replaces
the IPv6 address prefix in the packet header with another IPv6 address prefix to achieve IPv6 address translation.
N/AT66 can realize mutual access between an intranet and Internet.
4.17.3 IPv6 Address Assignment Methods

Manual configuration: The IPv6 address/prefix and other network configuration parameters are manually
configured.
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Network Settings