Brother MFC 5840CN - Manual (Page 27)

3 - 6 FRONT PANEL SETUP
NC9100h_FM6.0
Subnet Mask
This field displays the current subnet mask used by the machine. If
you are not using DHCP or BOOTP to obtain the subnet mask, enter
the desired subnet mask. Check with your network manager for the
subnet mask to use.
1 Press Menu/Set , 5 , 1 , 3 . ( 4 , 1 , 3 for MFC-5440CN)
2 Select 1 to change. Enter the Subnet Mask address.
3 Press Menu/Set .
4 Press Stop/Exit .
Gateway
This field displays the current gateway or router address used by the
machine. If you are not using DHCP or BOOTP to obtain the gateway
or router address, enter the address you wish to assign. If you do not
have a gateway or router, leave this field blank. Check with your
network manager if you are unsure.
1 Press Menu/Set , 5 , 1 , 4 . ( 4 , 1 , 4 for MFC-5440CN)
2 Select 1 to change. Enter the Gateway address.
3 Press Menu/Set .
4 Press Stop/Exit .