Each network supports a maximum of 16,777,214 (2 24 -2) hosts per network
16 384 networks are available in Class B network.
First octet rule for each class:Class A: 0xxxxxxxClass B: 10xxxxxxClass C: 110xxxxxClass A range is 0 - 1270.0.0.0 and 127.0.0.0 are not "routable" IP addresses. One defines all networks and the other is the loopback. We have a total of 126 usable networks and 16,777,214 usable hostaddresses per network. There are even less if we don't count the private address of 10.0.0.0 (RFC 1918).Class B range is 128 - 191There are 16,384 total networks in this class; that's including the private addresses of 172.16.0.0 - 172.31.0.0 (RFC 1918). There are a total of 65,534 usable host addresses per network.Class C range is 192 - 223There are 2,097,152 total networks in this class; that's including the private addresses of 192.168.0.0 - 192.168.255.0 (RFC 1918). There are 254 usable hosts addresses per network.
254
Given a Class C network: 200.1.1.0 We want 5 subnets, each with 30 hosts on it. How many bits to borrow ? How many bits to leave? What is the subnet mask? ( in dot notation and in CIDR notation)
A, B and D are subnets. C is not. IP addresses A and D are both Class B subnets. Class B addresses normally have a subnet mask of 255.255.0.0. The first two bits of a class B network are always 10 which leaves 14 bits for the network prefix, thus allowing up to 16,384 separate Class B networks (including 139.233.0.0 and 190.233.0.0). The last 16 bits denote the host number thus there can be up to 65,536 hosts per network. By specifying a subnet mask of 255.255.255.0 the network can be divided into as many as 256 separate subnets each with 256 hosts. IP address B is a Class A subnet. Class A addresses normally have a subnet mask of 255.0.0.0. The first bit of a class A network is always 0, which leaves 7 bits for the network prefix, thus allowing up to 127 Class A networks (including 10.0.0.0). The last 24 bits denote the host number thus there can be up to 16,777,216 hosts per network. By specifying a subnet mask of 255.255.255.0, the hosts can be divided into as many as 65,536 separate subnets each with up to 256 hosts. IP address C is a Class C address, but is not a subnet. Class C addresses normally have a subnet mask of 255.255.255.0. The first three bits in a Class C network are always 110, leaving 21 bits for the network prefix, thus allowing up to 2,097,152 Class C networks (including 192.168.0.0). The last 8 bits denote the host number thus there can be up 256 hosts per network. To make a subnet out of a Class C address you must have a subnet mask of 255.255.255.X, where X may be 192, 224, 240, 248 or 252. That is, 2, 3, 4, 5 or 6 bits to denote the subnet and the remaining bits to denote the hosts. Thus a subnet mask of 255.255.255.192 would allow as many as 4 subnets each with up to 64 hosts, while a subnet mask of 255.255.255.240 would allow as many as 16 subnets each with up to 16 hosts. It should be noted that the maximum number of hosts is actually 2 less than the figures shown above. This is because the host address with all 0 bits is reserved for network address while the host address with all 1 bits is reserved for broadcasting.
no you can't use this IP address. you can use IP address belongs to following group only Summary of IP Address Classes Class A - 0nnnnnnn hhhhhhhh hhhhhhhh hhhhhhhh First bit 0; 7 network bits; 24 host bits Initial byte: 0 - 127 126 Class As exist (0 and 127 are reserved) 16,777,214 hosts on each Class A Class B - 10nnnnnn nnnnnnnn hhhhhhhh hhhhhhhh First two bits 10; 14 network bits; 16 host bits Initial byte: 128 - 191 16,384 Class Bs exist 65,532 hosts on each Class B Class C - 110nnnnn nnnnnnnn nnnnnnnn hhhhhhhh First three bits 110; 21 network bits; 8 host bits Initial byte: 192 - 223 2,097,152 Class Cs exist 254 hosts on each Class
Class C
If you need to divide it up into the maximum number of subnets containing at least 500 hosts each, you should use a /23 subnet mask. This will provide you with 128 networks of 510 hosts each. If you used a /24 mask, you would be limited to 254 hosts. Similarly, a /22 mask would be wasteful, allowing you 1022 hosts.
255.255.252.0
The network connection breaks because the one path being used is broken.
License? Where do you get this? In a Class B network there are 2 to the 16th power addresses. Class B = 255.255.0.0 65536 addresses In a Class A network there are 2 to the 24th power addresses Class A = 255.0.0.0 16,777,216 addresses In a class C network there are 2 to the 8th power addresses Class C = 255.255.255.0 256 addresses Class A around 16 million Class B around 65,000 Class C is actually 254 NOT 256. IP addresses are leased and therefore the lessee is given a license to use that particular IP address.