ipv4
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IPv4 addresses are 32-bit numbers represented in dotted decimal notation with four octets separated by periods. The network portion and host portion of an address depend on its class. There are five classes: Class A has a 7-bit network ID and 24-bit host ID; Class B a 14-bit network ID and 16-bit host ID; Class C a 21-bit network ID and 8-bit host ID. Class D is for multicasting with the high-order bits set to 1110, and Class E is reserved for experimental purposes.
ipv4
- 1. Content • Intro to IPv4 • Type of IPv4 class • Class A • Class B • Class C • Class D • Class E
- 2. Ipv4 • It is 32 bit number represented in 4 decimal number where each decimal number is of 8 bit (octet) is separated by a dot(.). • Thus representation known as doted decimal representation. • IP address consists of 2 components the network id and the host id.
- 3. • Network id:-it is the number assigned to a network in the internet. Host id:- it represents the id assigned to a host in the network. • IPv4 allows 232 (4294967296) unique address which section of IP address show the network id & which section show the machine or host id depend on the class network.
- 4. • There are five classes of IP addresses:- • Class A • Class B • Class C • Class D • Class E
- 5. Class A:- • The first byte is a network id (8 bits) & the last 3 bytes are for host id (24 bits). • The first bit is ‘0’. • Range of network number-1.0.0.0 to 126.0.0.0 • Number of possible networks-127(1-126 usable, 127 is reserved)
- 6. Class A:- • Number of possible values in the host portion-16,777,216 • It is used for large network.
- 7. Class B:- • The first 2 bytes are a network id (16 bits) & the last 2 bytes are for host id (16 bits). • The first 2 bits are ‘10’. • Range of network number- 128.0.0.0 to 191.255.0.0 • Number of possible networks- 16,384
- 8. Class B:- • Number of possible values in the host portion- 65536 • Used for medium size network.
- 9. Class C:- • The first 3 bytes are a network id (24 bits) & the last 1 byte are for host id (8 bit). • The first 3 bits are ‘110’. • Range of network number- 192.0.0.0 to 223.255.255.0 • Number of possible networks- 2,097,152
- 10. Class D:- • An IP address which belong to class D has the first octet has its 4bit set to ‘1110’. • Range of network number- 224.0.0.0 to 239.255.255.255
- 11. Class D:- • Used for multicasting
- 12. Class E:- • It reserved for experimental & for future testing purpose. • Range of network number- 240.0.0.0 to 255.255.255.254
- 13. Thank You