Aggregate Linux Interfaces - Hitachi 3080 Network Administration Manual

Note: The IP address range of a private management network can only
include IP addresses which share the first three octets of the server's eth1
network IP address. For example, for an server IP address of 192.0.2.1,
devices on the private management network must have addresses in the
range of 192.0.2.2 - 192.0.2.254.
As the server supports mixed systems, It is also possible for some or all
auxiliary devices to be located on a public file-serving network. This enables
some devices to be located on a private management network, and others on
a public file-serving network.

Aggregate Linux interfaces

The NAS server provides the ability to access the file serving interfaces (agX)
from Linux, using a virtual Linux network interface (eth-agX), which is bound
to a specific agX interface as shown below:
Network interfaces 21
Hitachi NAS Platform Network Administration Guide