SMC Networks WUSB32 - annexe 2 Manual page 41

Configuring the LAN Ports
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3. Click [Submit].
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The IP address you assign must be in the same subnet
as your LAN computers that connect to this port (that is,
the network ID portion of their IP addresses and their
subnet masks must be the same). See IP Addresses,
Network Masks and Subnets on page 167 for an
explanation of IP addresses and network masks.
If you change the LAN IP address, you may need to
update the DHCP configuration so that the addresses that
the DHCP server dynamically assigns to your computers
are on the same subnet as the new LAN IP address.
See Configuring Dynamic Host Configuration Protocol
on page 43 for instructions on changing the pool of
dynamically assigned addresses.
Enabling DHCP:
If you choose to have the LAN port be a DHCP client
of an internal or external server, the [LAN Network Mask]
field will be dimmed and made unavailable for entry. The
[LAN IP Address] field will remain editable, however. The
address that you specify here will be used as a request to
the DHCP server. This is referred to as a Configured IP
Address in the program. If the configured IP address is not
available from the DHCP server, then the system will
accept another assigned address. Even after another
number is assigned, the same configured IP address
will continue to display in this field.
If you changed the LAN IP address while working from a
PC that is connected to the device via Ethernet, then your
connection will be terminated.