TRENDnet TDM-E400 - Manual (Page 54)

TDM-E400 / TDM-C400 Ethernet Modem Router User’s Manual
54
Speed/Duplex Speed indicates the speed of the Ethernet
communication between the ADSL2+ Ethernet
Modem Router and the LAN PCs or hub. Duplex
indicates the type of Ethernet communication (i.e., full
duplex, or half-duplex).
These settings are not user-configurable.
IGMP Indicates whether this interface is enabled with the
Internet Group Management Protocol. When enabled,
the Ethernet interface collects and consolidates
requests from the LAN PCs to receive IGMP
messages from external computers. The interface also
forwards IGMP messages it receives on its WAN
interface to the appropriate hosts. The WAN interface
must also be enabled for the IGMP protocol (see the
Quick Configuration page and the corresponding
instructions on page 33).
MTU The Maximum Transmission Unit specifies the size in
bytes of the largest Ethernet packet that the interface
will accept. Packets larger than this size will be
dropped.
2. Enter an IP address and mask in the fields provided or
enable the external or internal DHCP server in the Get LAN
Address field. Keep these points in mind:
f Manually specifying an address: If you are using routing
services on you LAN such as DHCP and NAT, you must
assign a fixed LAN IP address and mask to the interface.
The IP address must be in the same subnet as your LAN
computers that connect to it. See Appendix A 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
Chapter 8 for instructions on changing the pool of
dynamically assigned addresses.
f Enabling DHCP: If you choose to have the LAN interface
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 Web Configuration. The
configured IP address is requested during communication
with the DHCP server. If the configured IP address is not
available, then system will accept another address from the
server. Even if another number is assigned, the same
configured IP address will continue to display in this field.
3. If you are using IGMP on your network, click the IGMP
Enable radio button (see the explanation of IGMP on
page 54).
4. Click .