Black Box LR1530A-EU-R3 - Manual (Page 40)

Applications
34
7
IP Address
Location: Main
Ä Configuration
Ä LAN Set-up
Ä LAN IP Set-up
Ä IP Address / Subnet mask size
The IP address consists of four 8-bit numbers and
is represented by 4 fields separated by periods (“.”),
where each field is specified by a decimal number
(e.g. 199.169.1.10). Each decimal number must be
less than or equal to 255 (the maximum value of an
8-bit binary number).
The IP address is first specified and then you will
be prompted to enter the Subnet mask size.
The Subnet mask size defines the subnet mask by
using the specified number to reserve a series of
contiguous bit locations from the start of the entire
IP address. These reserved bit locations are then
used as the network portion of the IP address for
the subnet.
For example, with a class C IP address, a subnet
mask size of 26 will mask the 24 network address
bits plus 2 host bits for the subnet address,
resulting in 4 subnet addresses being created. (Note
that depending on whether or not nonstandard
subnets are allowed, not all of these addresses may
be valid; see the sections on defining masks).
The default gateway parameter only needs to be defined when there is
another IP router connected to the LAN that is the default gateway for
this IP network.
Once the WAN connections have been established to the remote
partner routers, the IP router portion of the routers will begin to build
their routing tables according to the IP frames they receive from the
network. Manual entries may be made in the routing tables by adding
static IP routes.