Allied Telesis AT-9000 Series - Manual (Page 288)

Chapter 13: IPv4 and IPv6 Management Addresses
260
 If you assign both IPv4 and IPv6 addresses to the switch, they
must be assigned to the same VLAN.
 An IPv4 management address can be assigned manually or from a
DHCP server on your network. (To learn the switch’s MAC address
to add to a DHCP server, refer to “SHOW SWITCH” on page 131.)
 An IPv6 address must be assigned manually. The switch does not
support the assignment of an IPv6 management address from a
DHCP server or by IPv6 auto assignment.
 You must also assign the switch a default gateway if the
management devices (syslog servers, Telnet workstations, etc,)
are not members of the same subnet as the management address.
This IP address designates an interface on a router or other Layer
3 device that represents the first hop to the remote subnets or
networks where the network devices are located.
 The default gateway address, if needed, must be a member of the
same subnet as the management address.