IP Addressing – Dotted-Decimal Notation An IP address is 32 bits in size
IP Addressing Dotted Decimal and Binary explanation.
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Transcript of IP Addressing Dotted Decimal and Binary explanation.
![Page 1: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/1.jpg)
IP Addressing
Dotted Decimal and Binary explanation
![Page 2: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/2.jpg)
IP Addressing
• IP Addresses can be notated in Dotted Decimal and/or Binary, but you must understand both
• Dotted Decimal is what we are familiar with– eg. 128.41.230.65
– To find out what the value of the dotted decimal octet is we must know what the binary format is
• Binary bits are shown by a “1” or a “0” – “1” indicates that the binary place is “on”
– “0” indicates that the binary place is “off”
![Page 3: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/3.jpg)
IP Addressing
• IP addresses in dotted decimal contain 4 octets– Add up the number of “locations” contained by the dots
: xxx.xxx.xxx.xxx = 4 octets
– Each octet contains 8 binary bits that tell us what the value of the octet in the dotted decimal notation
![Page 4: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/4.jpg)
Binary as it relates to the Octet
XXX.XXX.XXX.XXX
Each octet is made up of 8 binary bit “places”
Calculate 4 octets X 8 bits = 32 bits total
![Page 5: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/5.jpg)
Binary Place Values
0 0 0 0 0 0 0 0
128 64 32 16 8 4 2 1
= 0
0 0 0 0 0 0 0 1 = 1
0 0 0 0 0 0 1 1 = 3
=255
0 1 0 0 0 0 1 1 = 67
1 0 0 0 0 0 0 0 =128
! Remember a binary bit is either on or off – “1” or “0” !
![Page 6: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/6.jpg)
Converting Dotted Decimal to Binary
128.41.230.65Lets convert the dotted decimal address shown here to binary
![Page 7: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/7.jpg)
Converting Dotted Decimal to Binary
Take the value of the first Octet
128
Binary would look something like this
1 0 0 0 0 0 0 0
! Remember the value of the first binary bit place is 128 and the first bit place is “turned on” !
![Page 8: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/8.jpg)
Converting Dotted Decimal to Binary
Take the value of the second Octet
41
Binary would look something like this
0 0 1 0 1 0 0 1
! Remember the values of the bit places turned on – 32, 8, and 1 – 32+8+1=41 !
![Page 9: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/9.jpg)
Converting Dotted Decimal to Binary
Take the value of the third Octet
230
Binary would look something like this
1 1 1 0 0 1 1 0
! Remember the values of the bit places turned on – 128, 64, 32, 4, and 2 – 128+64+32+4+2=230 !
![Page 10: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/10.jpg)
Converting Dotted Decimal to Binary
Take the value of the forth Octet
65
Binary would look something like this
0 1 0 0 0 0 0 1
! Remember the values of the bit places turned on – 64, and 1 – 64+1=65 !
![Page 11: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/11.jpg)
Converting Dotted Decimal to Binary
128.41.230.65The whole thing in binary would look like this
10000000.00101001.11100110.01000001
![Page 12: IP Addressing Dotted Decimal and Binary explanation.](https://reader036.fdocuments.us/reader036/viewer/2022082506/5697c0011a28abf838cc218b/html5/thumbnails/12.jpg)
Now you Know how!!