Table 159 Subnet 1; Table 160 Subnet 2 - ZyXEL Communications 802.11g HomePlug AV ADSL2+ Gateway P-660HWP-Dx User Manual

Appendix E IP Subnetting
In the following charts, shaded/bolded last octet bit values indicate host ID bits
"borrowed" to make network ID bits. The number of "borrowed" host ID bits
determines the number of subnets you can have. The remaining number of host
ID bits (after "borrowing") determines the number of hosts you can have on
each subnet.

Table 159 Subnet 1

IP/SUBNET MASK
IP Address
IP Address (Binary)
Subnet Mask
Subnet Mask (Binary)
Subnet Address: 192.168.1.0
Broadcast Address:
192.168.1.127

Table 160 Subnet 2

IP/SUBNET MASK
IP Address
IP Address (Binary)
Subnet Mask
Subnet Mask (Binary)
Subnet Address:
192.168.1.128
Broadcast Address:
192.168.1.255
Host IDs of all zeros represent the subnet itself and host IDs of all ones are the broadcast
address for that subnet, so the actual number of hosts available on each subnet in the example
7
above is 2
192.168.1.0 with mask 255.255.255.128 is the subnet itself, and 192.168.1.127 with mask
255.255.255.128 is the directed broadcast address for the first subnet. Therefore, the lowest IP
address that can be assigned to an actual host for the first subnet is 192.168.1.1 and the highest
is 192.168.1.126. Similarly the host ID range for the second subnet is 192.168.1.129 to
192.168.1.254.
38
NETWORK NUMBER
192.168.1.
11000000.10101000.00000001.
255.255.255.
11111111.11111111.11111111.
Lowest Host ID: 192.168.1.1
Highest Host ID: 192.168.1.126
NETWORK NUMBER
192.168.1.
11000000.10101000.00000001.
255.255.255.
11111111.11111111.11111111.
Lowest Host ID: 192.168.1.129
Highest Host ID: 192.168.1.254
– 2 or 126 hosts for each subnet.
LAST OCTET BIT
VALUE
0
00000000
128
10000000
LAST OCTET BIT VALUE
128
10000000
128
10000000
P-660HWP-Dx User's Guide