How many hosts can IPv4 support?
As all IPv4 networks have 32 bits, and each “section” of the address denoted by the decimal points contains eight bits, “192.0. 2.0/24” leaves eight bits to contain host addresses. This is enough space for 256 host addresses.
What is the maximum limit of IPv4?
4,294,967,296
IPv4 uses 32-bit IP address, and with 32 bits the maximum number of IP addresses is 232—or 4,294,967,296. This provides a little more than four billion IPv4 addresses (in theory).
What is the maximum number of host addresses available in a Class B IPv4 network?
Table 2-1 IP Addresses Available to Internet Hosts
| Address Class | First Octet Range | Number of Hosts Per Network |
|---|---|---|
| Class A | 0 to 126 | 16,777,214 |
| Class B | 128 to 191 | 65,534 |
| Class C | 192 to 223 | 254 |
How many hosts can be in the same IP network?
254 hosts
The 255 address (in binary notation, a host address of all ones) is used to broadcast a message to every host on a network. Just remember that the first and last address in any network or subnet can’t be assigned to any individual host. You should now be able to give IP addresses to 254 hosts.
How to calculate host ID in IPv4 Class A?
The host-id in class A is defined by the remaining three bytes of the IPv4 address which is equal to 24 bits. So, we can calculate the number of hosts for each block as 224=16,777,216. So, we conclude that we can assign 128 blocks from class A to 128 organizations where each organization can have 16,777,216 hosts connected to the network.
How is Classful addressing used in IPv4 addresses?
The classful addressing concepts divide the address space into a fixed number of blocks and each block has a fixed number of hosts. In IPv4 addresses of class A, B & C the first part of the address is considered as net-id (Network id) and the second part of the address is called host-id.
How many hosts are in an IPv4 subnet?
Now since each number in an IP address is 2**8 hosts, another 3 binary digits makes it 2**11, which means that there are 2048 hosts. But since the first and last hosts in a subnet are broadcast addresses, it’s 2**11 – 2, which is 2046.
How are classes of IP address used in multicast?
Classes D and E are reserved for multicast and experimental purposes respectively. The order of bits in the first octet determine the classes of IP address. The class of IP address is used to determine the bits used for network ID and host ID and the number of total networks and hosts possible in that particular class.