9. IPv4 Addresses
192 . 168 . 10 . 1
11000000.10101000.00001010.00000001
Each octet is represented as
it's decimal equivalent.
This is known as dotted decimal
12. Classful Networks
Five address classes
These were used from 1981 until 1993
Classes A, B and C are widely used for
unicast communication, a single sender
to a single receiver. One-to-One.
13. Classful Networks
Five address classes
These were used from 1981 until 1993
Classes A, B and C are widely used for
unicast communication, a single sender
to a single receiver. One-to-One.
Class D is used for multicast
communication, a single sender to a
group of receivers. One-to-Many
14. Classful Networks
Five address classes
These were used from 1981 until 1993
Classes A, B and C are widely used for
unicast communication, a single sender
to a single receiver. One-to-One.
Class D is used for multicast
communication, a single sender to a
group of receivers. One-to-Many
Class E was reserved for
future/experimental use
16. Classful Networks
Class A:
128 Networks (16,777,216 Addresses per
Network)
Class B:
16,384 Networks (65,536 Addresses per
Network)
17. Classful Networks
Class A:
128 Networks (16,777,216 Addresses per
Network)
Class B:
16,384 Networks (65,536 Addresses per
Network)
Class C:
2,097,152 Networks (256 Addresses per
Network)
53. Classful IP Addressing - Class E
240 . 0 . 0 . 0
11110000.00000000.00000000.00000000
11111111.11111111.11111111.11111111
255 . 255 . 255 . 255
54. Classful IP Addressing - Class E
HOST . HOST . HOST . HOST
240 . 0 . 0 . 0
11110000.00000000.00000000.00000000
11111111.11111111.11111111.11111111
255 . 255 . 255 . 255
55. Classful IP Addressing - Class E
HOST . HOST . HOST . HOST
240 . 0 . 0 . 0
11110000.00000000.00000000.00000000
11111111.11111111.11111111.11111111
255 . 255 . 255 . 255
RESERVED FOR EXPERIMENTAL PURPOSES
56. The Default Classful Subnet Masks
255.0.0.0 = /8
Class A Default Subnet Mask
255.255.0.0 = /16
Class B Default Subnet Mask
255.255.255.0 = /24
Class C Default Subnet Mask
57. The Default Classful Subnet Masks
255.0.0.0 = /8
224
= 16777216 – 2 = 16777214 Hosts per
Network