3Com Switch 8800 Advanced Software V5 Configuration Guide

Configuring Basic IPv6 Functions 221
Configuring Basic IPv6
Functions
Enabling the IPv6 Packet
Forwarding Function
Before IPv6-related configurations, you must enable the IPv6 packet forwarding
function. Otherwise, an interface cannot forward IPv6 packets even if an IPv6
address is configured, resulting in communication failures in the IPv6 network.
Follow these steps to enable the IPv6 packet forwarding function:
Configuring an IPv6
Unicast Address
IPv6 site-local addresses and global unicast addresses can be configured in either
of the following ways:
■ EUI-64 format: When the EUI-64 format is adopted to form IPv6 addresses, the
IPv6 address prefix of an interface is the configured prefix and the interface
identifier is derived from the link-layer address of the interface.
■ Manual configuration: IPv6 site-local addresses or global unicast addresses are
configured manually.
IPv6 link-local addresses can be configured in either of the following ways:
■ Automatic generation: The device automatically generates a link-local address
for an interface according to the link-local address prefix (FE80::/64) and the
link-layer address of the interface.
■ Manual assignment: IPv6 link-local addresses can be assigned manually.
Follow these steps to configure an IPv6 link-local address:
To do... Use the command... Remarks
Enter system view system-view -
Enable the IPv6 packet
forwarding function
ipv6 Required
Disabled by default.
To do... Use the command... Remarks
Enter system view system-view -
Enter interface view interface interface-type
interface-number
-
Configure an
IPv6 global
unicast address
or site-local
address
Manually assign an
IPv6 address
ipv6 address {
ipv6-address prefix-length
|
ipv6-address/prefix-length
}
Use either command
By default, no site-local
address or global unicast
address is configured for
an interface.
Adopt the EUI-64
format to form an
IPv6 address
ipv6 address
ipv6-address/prefix-length
eui-64