ZyXEL Communications N4100 User Manual

Appendix C IP Addresses and Subnetting
N4100 User’s Guide
302
The following figure shows an example IP address in which the first three octets
(192.168.1) are the network number, and the fourth octet (16) is the host ID.
Figure 181 Network Number and Host ID
How much of the IP address is the network number and how much is the host ID
varies according to the subnet mask.
Subnet Masks
A subnet mask is used to determine which bits are part of the network number,
and which bits are part of the host ID (using a logical AND operation). The term
“subnet” is short for “sub-network”.
A subnet mask has 32 bits. If a bit in the subnet mask is a “1” then the
corresponding bit in the IP address is part of the network number. If a bit in the
subnet mask is “0” then the corresponding bit in the IP address is part of the host
ID.
The following example shows a subnet mask identifying the network number (in
bold text) and host ID of an IP address (192.168.1.2 in decimal).
Table 75 IP Address Network Number and Host ID Example
1ST
OCTET:
(192)
2ND
OCTET:
(168)
3RD
OCTET:
(1)
4TH
OCTET
(2)
IP Address (Binary) 11000000 10101000 00000001 00000010
Subnet Mask (Binary) 11111111 11111111 11111111 00000000
Network Number 11000000 10101000 00000001
Host ID 00000010

ZyXEL Communications N4100 Specifications

General

Number of users	100 user(s)
Ethernet LAN data rates	10, 100 Mbit/s
Maximum data transfer rate	100 Mbit/s
Indoor range	35 ~ 100 m
Outdoor range	100 ~ 300 m
Connectivity LEDs	Yes
Internal	No
Certification	FCC, CE, C-Tick, NCC, RoHS, WEEE
Security algorithms	802.1x RADIUS
Power requirements	100-240 VAC, 50/60 Hz, 0.5 A
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	0 - 50 °C
Operating relative humidity (H-H)	10 - 95 %

Weight and Dimensions

Weight	565 g
Dimensions (WxDxH)	222 x 146 x 152 mm