Application Guide

[10]
Software User's
Manual
–
Version 3.0
IPv4 Mask
The IPv4 network mask in number of bits (prefix length). Valid values are
between 0 and 30 bits for an IPv4 address. If DHCP is enabled, this field
configures the fallback address network mask. The field may be left blank if IPv4
operation on the interface is not desired - or no DHCP fallback address is
desired.
DHCPv6
Enable
Enable the DHCPv6 client by checking this box. If this option is enabled, the
system will configure the IPv6 address of the interface using the DHCPv6
protocol.
DHCPv6
Rapid
Commit
Enable the DHCPv6 Rapid-Commit option by checking this box. If this option is
enabled, the DHCPv6 client terminates the waiting process as soon as a Reply
message with a Rapid Commit option is received. This option is only
manageable when DHCPv6 client is enabled.
DHCPv6
Current
Lease
For DHCPv6 interface with an active lease, this column shows the interface
address provided by the DHCPv6 server.
IPv6
Address
The IPv6 address of the interface. An IPv6 address is in 128-bit records
represented as eight fields of up to four hexadecimal digits with a colon
separating each field (:). For example, fe80::215:c5ff:fe03:4dc7. The symbol :: is
a special syntax that can be used as a shorthand way of representing multiple
16-bit groups of contiguous zeros; but it can appear only once.
The system accepts the valid IPv6 unicast address only, except IPv4-
Compatible address and IPv4-Mapped address. The field may be left blank if
IPv6 operation on the interface is
not desired.
IPv6 Mask
The IPv6 network mask in number of bits (prefix length). Valid values are
between 1 and 128 bits for an IPv6 address. The field may be left blank if IPv6
operation on the interface is not desired.
Resolving
IPv6 DAD
The link-local address is formed from an interface identifier based on the
hardware address which is supposed to be uniquely assigned. Once the DAD
(Duplicate Address Detection) detects the address duplication, the operation on
the interface should be disabled. At this time, manual intervention is required to
resolve the address duplication. For example, check whether the loop occurs in
the VLAN or there is in fact another device occupying the same hardware
address as the device in the VLAN. After making sure the specific link-local
address is unique on the IPv6 link in use, delete and then add the specific IPv6
interface to restart the IPv6 operations on this interface.