User's Manual
Table Of Contents
- NBG6515
- User’s Guide
- Technical Reference
- Wireless LAN
- 11.1 Overview
- 11.2 What You Can Do
- 11.3 What You Should Know
- 11.4 General Wireless LAN 2.4G/5G General Screen
- 11.5 General Wireless LAN 2.4G/5G Security Screen
- 11.6 MAC Filter
- 11.7 Wireless LAN Advanced Screen
- 11.8 Quality of Service (QoS) Screen
- 11.9 WPS Screen
- 11.10 WPS Device Screen
- 11.11 Scheduling Screen
- 11.12 Guest WLAN Screen
- IPv6
- WAN
- LAN
- DHCP Server
- Network Address Translation (NAT)
- Dynamic DNS
- Static Route
- Firewall
- Content Filter
- Bandwidth Management
- Remote Management
- Universal Plug-and-Play (UPnP)
- USB Media Sharing
- Maintenance
- Troubleshooting
- Wireless LAN
NBG6515 User’s Guide
96
CHAPTER 12
IPv6
12.1 IPv6 Overview
IPv6 (Internet Protocol version 6), is designed to enhance IP address size and features. The
increase in IPv6 address size to 128 bits (from the 32-bit IPv4 address) allows up to 3.4 x 10
38
IP
addresses.
Use the IPv6 screens to configure the IP address for your NBG on the LAN or on the WAN.
12.1.1 What You Can Do in this Chapter
•Use the General screen (Section 12.2 on page 98) to configure the IPv6 connection type.
12.1.2 What You Need to Know
IPv6 Addressing
An 128-bit IPv6 address is written as eight 16-bit hexadecimal blocks separated by colons (:). This
is an example IPv6 address 2001:0db8:1a2b:0015:0000:0000:1a2f:0000.
IPv6 addresses can be abbreviated in two ways:
• Leading zeros in a block can be omitted. So 2001:0db8:1a2b:0015:0000:0000:1a2f:0000 can
be written as 2001:db8:1a2b:15:0:0:1a2f:0.
• Any number of consecutive blocks of zeros can be replaced by a double colon. A double colon can
only appear once in an IPv6 address. So 2001:0db8:0000:0000:1a2f:0000:0000:0015 can be
written as 2001:0db8::1a2f:0000:0000:0015, 2001:0db8:0000:0000:1a2f::0015,
2001:db8::1a2f:0:0:15 or 2001:db8:0:0:1a2f::15.
Prefix and Prefix Length
Similar to an IPv4 subnet mask, IPv6 uses an address prefix to represent the network address. An
IPv6 prefix length specifies how many most significant bits (start from the left) in the address
compose the network address. The prefix length is written as “/x” where x is a number. For
example,
2001:db8:1a2b:15::1a2f:0/32
means that the first 32 bits (2001:db8) from the left is the network prefix.