NEC SL1100, Networking Manual

Page: 29 / 292

NEC SL1100 Issue 6.0
Networking Manual 4 - 3
For example, if the IP address is: 172.16.0.10 and the Subnet Mask used is
Class B (255.255.0.0), the first two groups of numbers (172.16) are ignored
once they reach the proper network location. The next two groups (0.10) are
the final destination within the LAN to which the connection is to be made.

For sub-netted networks, the subnet mask may be different from the
default subnet masks listed above.
2.3 DHCP
Dynamic Host Configuration Protocol (DHCP) assigns a dynamic IP address.
Network control may be easier with DHCP as there is no need to assign and
program individual IP addresses for the LAN equipment. To use a dynamic IP
address, a DHCP server must be provided. The SL1100 can be configured to
be the DHCP server for the customers network. Before the DHCP server in
the SL1100 can be enabled, the DHCP client function must first be disabled.
When equipment, which is connected to the LAN (the DHCP client), is
requesting an IP address, it searches the DHCP server.
When the request for an address is recognized, the DHCP server assigns an
IP address, Subnet mask, and the IP address of the router, based on NEC
SL1100 system programming.
S
ECTION
3
C
ONFIGURATION
E
XAMPLES
The following configuration examples illustrate a typical network configuration for an
existing network that uses a static address and a typical configuration for a new
network that uses a dynamic address.
3.1 Example Configuration 1 - Existing Network with Static
Addressing
Figure 4-1 Example Configuration 1 - Existing Network with Static IP Address
on page 4-4
shows a typical network configuration that uses Static IP
Addressing.
Each client device has a manually assigned IP address in the 192.168.1.0/24
network (i.e., 192.168.1.1 to 192.168.1.254 with a subnet mask of
255.255.255.0). They also have a default gateway address configured
(192.168.1.254) this allows the device to route packets to destinations that
exist outside of their own LAN.