Cisco 2521LF - 2521LF Router Manual do Utilizador descarregar pdf (Página 25)

6-49CSE: Networking Fundamentals — WAN Basics

www.cisco.com

172.16.14.32/27

172.16.14. 64/27

172.16.14.96/27

– Subnet 172.16.14.0/24 is divided into smaller

subnets:

• Subnet with one mask at first (/27)

• Further subnet one of these subnets not used

elsewhere (/30)

172.16.1.0/24

172.16.2.0/24

172.16.0.0/16

172.16.14.136/30

172.16.14.132/30

172.16.14.140/30

What Is a Variable-Length

Subnet Mask?

What Is a Variable-Length

Subnet Mask?

6-50CSE: Networking Fundamentals — WAN Basics

www.cisco.com

What Is Route

Summarization?

What Is Route

Summarization?

– Routing protocols can summarize addresses of

several networks into one address

I can route to the

172.16.0.0/16 network.

Routing Table

172.16.0.0/16

Routing Table

172.16.25.0/24

172.16.26.0/24

172.16.27.0/24

172.16.26.0/24

172.16.25.0/24

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 51 52

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Cisco 2521LF - 2521LF Router Manual do Utilizador Página 25