Page 101 / 128 Scroll up to view Page 96 - 100
How does a Device Obtain an IP Address and Subnet Mask?
115
This type of IP Address operates on a subnet mask of ‘255.255.0.0’.
See an example about how a network (only four computers represented)
and a Router might be configured.
IP Addressing and Subnet Masking
How does a Device
Obtain an IP
Address and Subnet
Mask?
There are three different ways to obtain an IP address and the subnet
mask. These are:
Dynamic Host Configuration Protocol (DHCP) Addressing
Static Addressing
Automatic Addressing (Auto-IP Addressing)
DHCP Addressing
The Router contains a DHCP server, which allows computers on your
network to obtain an IP address and subnet mask automatically. DHCP
assigns a temporary IP address and subnet mask which gets reallocated
once you disconnect from the network.
DHCP will work on any client Operating System such as Windows
®
95,
Windows 98 or Windows NT 4.0. Also, using DHCP means that the same
IP address and subnet mask will never be duplicated for devices on the
network. DHCP is particularly useful for networks with large numbers of
users on them.
Static Addressing
You must enter an IP Address and the subnet mask manually on every
device. Using a static IP and subnet mask means the address is
permanently fixed.
Auto-IP Addressing
Network devices use automatic IP addressing if they are configured to
acquire an address using DHCP but are unable to contact a DHCP server.
Device
IP Address
Subnet Mask
PC 1
192.168.100.8
255.255.0.0
PC 2
192.168.201.30
255.255.0.0
PC 3
192.168.113.155
255.255.0.0
PC 4
192.168.002.230
255.255.0.0
Router
192.168.002.72
255.255.0.0
Page 102 / 128
116
A
PPENDIX
B: IP A
DDRESSING
Automatic IP addressing is a scheme where devices allocate themselves
an IP address at random from the industry standard subnet of
169.254.x.x (with a subnet mask of 255.255.0.0). If two devices allocate
themselves the same address, the conflict is detected and one of the
devices allocates itself a new address.
Automatic IP addressing support was introduced by Microsoft in the
Windows 98 operating system and is also supported in Windows 2000.
Page 103 / 128
C
T
ECHNICAL
S
PECIFICATIONS
This section lists the technical specifications for the OfficeConnect
Wireless 11g Cable/DSL Router.
Wireless 11g
Cable/DSL Router
Interfaces
Cable/DSL modem connection — 10Mbps/100Mbps dual speed Ethernet
port (10BASE-T/100BASE-TX)
LAN connection — four 10Mbps/100Mbps dual speed Ethernet ports
(10BASE-T/100BASE-TX)
WLAN Interfaces
Standard IEEE 802.11g, Direct Sequence Spread Spectrum (DSSS)
Transmission rate: 54Mbps, automatic fallback to 48, 36, 24, 18, 12, or
6 Mbps
Maximum channels: 14
Range up to 304.8m (1000ft)
Frequency: (US/Canada/Europe) 2.400-2.4835 GHz
Sensitivity:
6, 12, 18, 24, 36, 48 Mbps: -85 dBm;
54 Mbps -66 dBm typical
Modulation: CCK, BPSK, QPSK, OFDM
Encryption: 40/64 bit WEP, 128 bit WEP, WPA
Maximum clients: 128
O/P Power: 18dBm
Standard IEEE 802.11b, Direct Sequence Spread Spectrum (DSSS)
Transmission rate: 11bps, automatic fallback to 5.5, 2, or 1 Mbps
Maximum channels: 14
Range up to 304.8m (1000ft)
Frequency: (US/Canada/Europe) 2.400-2.4835 GHz
Sensitivity: 1, 2, 5.5 Mbps: -85 dBm; 11 Mbps -82 dBm typical
Modulation: CCK, BPSK, QPSK, OFDM
Page 104 / 128
118
A
PPENDIX
C: T
ECHNICAL
S
PECIFICATIONS
Encryption: 40/64 bit WEP, 128 bit WEP, WPA
Maximum clients: 128
O/P Power 18dBm
Operating Temperature
0 °C to 40 °C (32 °F to 105 °F)
Power
7VA, 23.9 BThU/hr
Humidity
0% to 90% (non-condensing) humidity
Dimensions
Width = 220 mm (8.7 in.)
Depth = 135 mm (5.3 in.)
Height = 24 mm (1 in.)
Weight
Approximately 500 g (1.1 lbs)
Standards
Functional:
ISO 8802/3
IEEE 802.3
IEEE 802.11b, 802.11g, Wi-Fi
Safety:
UL60950
CSA 22.2 #60950
IEC 60950
EN 60950
EMC:
EN 55022 Class B
EN 55024
CISPR 22
FCC Part 15 Class B*
ICES-003 Class B
CNS 13438 Class A
ETSI EN 301 489–17
Radio
CFR 47 FCC Part 15.207, 15.209, 15.247 and 15.249.
ETS 300 328 (2.4 GHz ISM band wide band transmission
Page 105 / 128
119
systems.
RSS-210
Environmental:
EN 60068 (IEC 68)
*See
“Regulatory Information(Page 139)”
on for conditions of operation.
System Requirements
Operating Systems
The Router will support the following Operating Systems:
Windows 95/98
Windows NT 4.0
Windows ME
Windows 2000
Windows XP
Mac OS 8.5 or higher
Unix
Ethernet Performance
The Router complies to the IEEE 802.3i, u and x specifications.
Wireless Performance
The Router has been designed to conform to the Wi-Fi interoperability
test standard.
Cable Specifications
The Router supports the following cable types and maximum lengths:
Category 3 (Ethernet) or Category 5 (Fast Ethernet or Dual Speed
Ethernet) Twisted Pair — shielded and unshielded cable types.
Maximum cable length of 100m (327.86 ft).

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