Hitachi 3080 Network Administration Manual page 47

ipadv --tcpmtu 9000 -p ag2-vlan0017
Alternatively:
ipadv -m 9000 -p ag2-vlan0017
For non-TCP packets (UDP/ICMP):
ipadv --othermtu <othermtu> -p <VLAN interface name>
For example:
ipadv --othermtu 9000 -p ag2-vlan0017
Alternatively:
ipadv -n 9000 -p ag2-vlan0017
For off-subnet values:
ipadv --offsubnetmtu <offsubnetmtu> -p <VLAN interface name>
For example:
ipadv --offsubnetmtu 9000 -p ag2-vlan0017
Alternatively:
ipadv -o 9000 -p ag2-vlan0017
Configuring VLAN interfaces 47
Hitachi NAS Platform Network Administration Guide