User guide

Brocade 6910 Ethernet Access Switch Configuration Guide 1021

53-1002581-01

Setting the Switch’s IP Address (IP Version 6)

FIGURE 320 Configuring General Settings 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.

CLI References

• “IPv6 Interface” on page 599

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 (see “Configuring IPv6

Interface Settings” on page 1018), 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 1018).

• 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.