Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4...

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Binary Lesson 6.1 Binary Lesson 6.1 Classful Classful Subnetting 2 Subnetting 2

Transcript of Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4...

Page 1: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

Binary Lesson 6.1Binary Lesson 6.1Classful Subnetting 2Classful Subnetting 2

Page 2: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

Slash NotationSlash Notation

Consider a class A address of 1.2.3.4Consider a class A address of 1.2.3.4 The network portion is the first octetThe network portion is the first octet

11 This situation can be writtenThis situation can be written

1.2.3.4/81.2.3.4/8 The number after the / is the number of The number after the / is the number of

bits in the network portionbits in the network portion

Page 3: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

Subnet MaskSubnet Mask

Consider a class A address of 1.2.3.4 /8 in Consider a class A address of 1.2.3.4 /8 in binarybinary

The The subnet masksubnet mask is 255.0.0.0 is 255.0.0.0 The network address is 1.0.0.0 The network address is 1.0.0.0 In Binary:In Binary:IP:IP: 00000001 00000010 00000011 00000100 00000001 00000010 00000011 00000100

Subnt Msk:Subnt Msk: 11111111 00000000 00000000 00000000 11111111 00000000 00000000 00000000

Net Addr:Net Addr: 00000001 00000000 00000000 00000000 00000001 00000000 00000000 00000000

Page 4: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

ANDAND

To find the network address, take a node's IP To find the network address, take a node's IP address and do this:address and do this: If the Subnet mask bit is 1, keep the IP address bitIf the Subnet mask bit is 1, keep the IP address bit If the Subnet mask bit is 0, that bit changes to 0If the Subnet mask bit is 0, that bit changes to 0

This is called a bitwise AND operationThis is called a bitwise AND operation

IP:IP: 00000001 00000010 00000011 00000100 00000001 00000010 00000011 00000100

Subnt Msk:Subnt Msk: 11111111 00000000 00000000 00000000 11111111 00000000 00000000 00000000

Net Addr:Net Addr: 00000001 00000000 00000000 00000000 00000001 00000000 00000000 00000000

Page 5: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

Class BClass B

Class B address: 147.144.1.212 /16Class B address: 147.144.1.212 /16 The The subnet masksubnet mask is 255.255.0.0 is 255.255.0.0 The network address is 147.144.0.0 The network address is 147.144.0.0 In Binary:In Binary:IP:IP: 10010011 10010000 00000001 10010011 10010000 00000001 1101010011010100

Subnt Msk:Subnt Msk: 11111111 11111111 00000000 11111111 11111111 00000000 0000000000000000

Net Addr:Net Addr: 10010011 10010000 00000000 10010011 10010000 00000000 0000000000000000

Page 6: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

Class CClass C

Class C address: 192.168.1.10 /24Class C address: 192.168.1.10 /24 The The subnet masksubnet mask is 255.255.255.0 is 255.255.255.0 The network address is 192.168.1.0 The network address is 192.168.1.0 In Binary:In Binary:IP:IP: 11000000 10101000 00000001 11000000 10101000 00000001 0000101000001010

Subnt Msk:Subnt Msk: 11111111 11111111 11111111 11111111 11111111 11111111 0000000000000000

Net Addr:Net Addr: 11000000 10101000 00000001 11000000 10101000 00000001 0000000000000000

Page 7: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

192.168.1.0 /25192.168.1.0 /25

You can split a class C in half with a /25You can split a class C in half with a /25 IP: IP: 192.168.1.10 /25192.168.1.10 /25 Subnet Mask:Subnet Mask: 255.255.255.128255.255.255.128 Network:Network: 192.168.1.0192.168.1.0

IP:IP: 11000000 10101000 00000001 11000000 10101000 00000001 0000101000001010

Subnt Msk:Subnt Msk: 11111111 11111111 11111111 11111111 11111111 11111111 1000000010000000

Net Addr:Net Addr: 11000000 10101000 00000001 11000000 10101000 00000001 0000000000000000

Page 8: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

192.168.1.0 /25192.168.1.0 /25

There are only 128 addresses in a /25 blockThere are only 128 addresses in a /25 block Network:Network: 192.168.1.0 /25192.168.1.0 /25 11stst Usable: Usable: 192.168.1.1 192.168.1.1 Last Usable:Last Usable: 192.168.1.126 192.168.1.126 Broadcast:Broadcast: 192.168.1.127 192.168.1.127

Net Addr: 11000000 10101000 00000001 00000000Net Addr: 11000000 10101000 00000001 00000000

First Use: 11000000 10101000 00000001 00000001First Use: 11000000 10101000 00000001 00000001

Last Use:Last Use: 11000000 10101000 00000001 01111110 11000000 10101000 00000001 01111110

Broadcast:Broadcast: 11000000 10101000 00000001 01111111 11000000 10101000 00000001 01111111

Page 9: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

192.168.1.128 /25192.168.1.128 /25

There are only 128 addresses in a /25 blockThere are only 128 addresses in a /25 block Network:Network: 192.168.1.128 /25192.168.1.128 /25 11stst Usable: Usable: 192.168.1.129192.168.1.129 Last Usable:Last Usable: 192.168.1.254 192.168.1.254 Broadcast:Broadcast: 192.168.1.255 192.168.1.255

Net Addr: 11000000 10101000 00000001 10000000Net Addr: 11000000 10101000 00000001 10000000

First Use: 11000000 10101000 00000001 10000001First Use: 11000000 10101000 00000001 10000001

Last Use:Last Use: 11000000 10101000 00000001 11111110 11000000 10101000 00000001 11111110

Broadcast:Broadcast: 11000000 10101000 00000001 11111111 11000000 10101000 00000001 11111111

Page 10: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

192.168.1.0 /26192.168.1.0 /26

There are only 64 addresses in a /26 blockThere are only 64 addresses in a /26 block Network:Network: 192.168.1.0 /26192.168.1.0 /26 11stst Usable: Usable: 192.168.1.1 192.168.1.1 Last Usable:Last Usable: 192.168.1.62 192.168.1.62 Broadcast:Broadcast: 192.168.1.63 192.168.1.63

Net Addr: 11000000 10101000 00000001 00000000Net Addr: 11000000 10101000 00000001 00000000

First Use: 11000000 10101000 00000001 00000001First Use: 11000000 10101000 00000001 00000001

Last Use:Last Use: 11000000 10101000 00000001 00111110 11000000 10101000 00000001 00111110

Broadcast:Broadcast: 11000000 10101000 00000001 00111111 11000000 10101000 00000001 00111111

Page 11: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

192.168.1.64 /26192.168.1.64 /26

There are only 64 addresses in a /26 blockThere are only 64 addresses in a /26 block Network:Network: 192.168.1.64 /26192.168.1.64 /26 11stst Usable: Usable: 192.168.1.65192.168.1.65 Last Usable:Last Usable: 192.168.1.126 192.168.1.126 Broadcast:Broadcast: 192.168.1.127192.168.1.127

Net Addr: 11000000 10101000 00000001 01000000Net Addr: 11000000 10101000 00000001 01000000

First Use: 11000000 10101000 00000001 01000001First Use: 11000000 10101000 00000001 01000001

Last Use:Last Use: 11000000 10101000 00000001 01111110 11000000 10101000 00000001 01111110

Broadcast:Broadcast: 11000000 10101000 00000001 01111111 11000000 10101000 00000001 01111111

Page 12: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

192.168.1.128 /26192.168.1.128 /26

There are only 64 addresses in a /26 blockThere are only 64 addresses in a /26 block Network:Network: 192.168.1.128 /26192.168.1.128 /26 11stst Usable: Usable: 192.168.1.129192.168.1.129 Last Usable:Last Usable: 192.168.1.190 192.168.1.190 Broadcast:Broadcast: 192.168.1.191192.168.1.191

Net Addr: 11000000 10101000 00000001 10000000Net Addr: 11000000 10101000 00000001 10000000

First Use: 11000000 10101000 00000001 10000001First Use: 11000000 10101000 00000001 10000001

Last Use:Last Use: 11000000 10101000 00000001 10111110 11000000 10101000 00000001 10111110

Broadcast:Broadcast: 11000000 10101000 00000001 10111111 11000000 10101000 00000001 10111111

Page 13: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

192.168.1.192 /26192.168.1.192 /26

There are only 64 addresses in a /26 blockThere are only 64 addresses in a /26 block Network:Network: 192.168.1.192 /26192.168.1.192 /26 11stst Usable: Usable: 192.168.1.193192.168.1.193 Last Usable:Last Usable: 192.168.1.254 192.168.1.254 Broadcast:Broadcast: 192.168.1.255192.168.1.255

Net Addr: 11000000 10101000 00000001 11000000Net Addr: 11000000 10101000 00000001 11000000

First Use: 11000000 10101000 00000001 11000001First Use: 11000000 10101000 00000001 11000001

Last Use:Last Use: 11000000 10101000 00000001 11111110 11000000 10101000 00000001 11111110

Broadcast:Broadcast: 11000000 10101000 00000001 11111111 11000000 10101000 00000001 11111111

Page 14: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

Classful Classful Subnetting Subnetting

iClicker iClicker QuestionsQuestions

Page 15: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

How many subnets containing 9 How many subnets containing 9 hosts each can be made from hosts each can be made from

this network?this network?192.168.1.0/24192.168.1.0/24

A.A. 44

B.B. 88

C.C. 1616

D.D. 3232

E.E. Something elseSomething else

Page 16: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

How many subnets containing 90 How many subnets containing 90 hosts each can be made from hosts each can be made from

this network?this network?192.168.1.0/24192.168.1.0/24

A.A. 44

B.B. 88

C.C. 1616

D.D. 3232

E.E. Something elseSomething else

Page 17: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

How many subnets containing 9 How many subnets containing 9 hosts each can be made from hosts each can be made from

this network?this network?147.144.1.128/26147.144.1.128/26

A.A. 44

B.B. 88

C.C. 1616

D.D. 3232

E.E. Something elseSomething else

Page 18: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

How many subnets containing 2 How many subnets containing 2 hosts each can be made from hosts each can be made from

this network?this network?192.168.1.0/27192.168.1.0/27

A.A. 44

B.B. 88

C.C. 1616

D.D. 3232

E.E. Something elseSomething else

Page 19: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

How many subnets containing How many subnets containing 900 hosts each can be made from 900 hosts each can be made from

this network?this network?10.0.0.0/1610.0.0.0/16

A.A. 88

B.B. 1616

C.C. 3232

D.D. 6464

E.E. Something elseSomething else

Page 20: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

What subnet contains this host?What subnet contains this host?192.168.1.129/30192.168.1.129/30

A.A. 192.168.1.126 /30192.168.1.126 /30

B.B. 192.168.1.128 /30192.168.1.128 /30

C.C. 192.168.1.126 /29192.168.1.126 /29

D.D. 192.168.1.130 /30192.168.1.130 /30

E.E. Something elseSomething else

Page 21: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

What is the smallest subnet What is the smallest subnet containing these two hosts?containing these two hosts?

192.168.1.1192.168.1.1192.168.1.10192.168.1.10

A.A. 192.168.1.0 /24192.168.1.0 /24

B.B. 192.168.1.0 /26192.168.1.0 /26

C.C. 192.168.1.0 /28192.168.1.0 /28

D.D. 192.168.1.0 /30192.168.1.0 /30

E.E. Something elseSomething else

Page 22: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

What is the smallest subnet What is the smallest subnet containing these two hosts?containing these two hosts?

10.1.1.210.1.1.211.1.1.111.1.1.1

A.A. 10.0.0.0 /810.0.0.0 /8

B.B. 10.0.0.0 /710.0.0.0 /7

C.C. 10.0.0.0 /610.0.0.0 /6

D.D. 8.0.0.0 /68.0.0.0 /6

E.E. Something elseSomething else

Page 23: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

What is the smallest subnet What is the smallest subnet containing these two hosts?containing these two hosts?

147.144.128.129147.144.128.129147.144.128.193147.144.128.193

A.A. 147.144.128.0 /24147.144.128.0 /24

B.B. 147.144.128.0 /25147.144.128.0 /25

C.C. 147.144.128.128 /25147.144.128.128 /25

D.D. 147.144.128.128 /26147.144.128.128 /26

E.E. Something elseSomething else

Page 24: Binary Lesson 6.1 Classful Subnetting 2. Slash Notation Consider a class A address of 1.2.3.4 Consider a class A address of 1.2.3.4 The network portion.

What is the smallest subnet What is the smallest subnet containing these two hosts?containing these two hosts?

192.168.1.62192.168.1.62192.168.1.65192.168.1.65

A.A. 192.168.1.0 /24192.168.1.0 /24

B.B. 192.168.1.32 /25192.168.1.32 /25

C.C. 192.168.1.0 /25192.168.1.0 /25

D.D. 192.168.1.32 /26192.168.1.32 /26

E.E. Something elseSomething else


Internet: Authoritive DNS Servers Resolver: gethostbyname() Server: is 1.2.3.4 Client Caching DNS Server.

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