Web Management Guide-R04

Table Of Contents
Chapter 16
| IP Configuration
Setting the Switch’s IP Address (IP Version 6)
– 673 –
Figure 451: Configuring RA Guard for an IPv6 Interface
Configuring an
IPv6 Address
Use the IP > IPv6 Configuration (Add IPv6 Address) page to configure an IPv6
interface for management access over the network, or for creating an interface to
multiple subnets.
Command Usage
All IPv6 addresses must be formatted according to RFC 2373 “IPv6 Addressing
Architecture,” using 8 colon-separated 16-bit hexadecimal values. One double
colon may be used in the address to indicate the appropriate number of zeros
required to fill the undefined fields.
The switch must always be configured with a link-local address. Therefore any
configuration process that enables IPv6 functionality, or assigns a global
unicast address to the switch, including address auto-configuration or explicitly
enabling IPv6 IPv6 (see Configuring IPv6 Interface Settings” on page 668), will
also automatically generate a link-local unicast address. The prefix length for a
link-local address is fixed at 64 bits, and the host portion of the default address
is based on the modified EUI-64 (Extended Universal Identifier) form of the
interface identifier (i.e., the physical MAC address). Alternatively, you can
manually configure the link-local address by entering the full address with a
network prefix in the range of FE80~FEBF.
To connect to a larger network with multiple subnets, you must configure a
global unicast address. There are several alternatives to configuring this
address type:
The global unicast address can be automatically configured by taking the
network prefix from router advertisements observed on the local interface,
and using the modified EUI-64 form of the interface identifier to
automatically create the host portion of the address (see “Configuring IPv6
Interface Settings” on page 668).
It can be manually configured by specifying the entire network prefix and
prefix length, and using the EUI-64 form of the interface identifier to
automatically create the low-order 64 bits in the host portion of the
address.