Configuration Guide     32
Managing System System Info Configurations
Address Format Select the global address format according to your needs.
EUI-64: Indicates that you only need to specify an address prefix, then the 
system will create a global address automatically.
Not EUI-64: Indicates that you have to specify an intact global address.
Global Address When EUI-64 is selected, please input the address prefix here, otherwise, please 
input an intact IPv6 address here. 
Prefix Length Configure the prefix length of the global address.
3)  View the global address entry in the Global Address Config section.
Global Address View or modify the global address.
Prefix Length View or modify the prefix length of the global address.
Type Displays the configuration mode of the global address.
Manual: Indicates that the corresponding address is configured manually.
Auto: Indicates that the corresponding address is created automatically using 
the RA message or obtained from the DHCPv6 Server.
Preferred 
Lifetime
Displays the preferred lifetime of the global address.
Preferred lifetime is the length of time that a valid IPv6 address is preferred. 
When the preferred time expires, the address becomes deprecated but still can 
be used, and you need to switch to another address. 
Valid Lifetime Displays the valid lifetime of the global address.
Valid lifetime is the length of time that an IPv6 address is in the valid state. When 
the valid lifetime expires, the address become invalid and can be no longer 
usable.