IP Routing 12 May, 2002 1 Forwarding (Routing) IP Datagrams - - PDF document

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IP Routing 12 May, 2002 1 Forwarding (Routing) IP Datagrams - - PDF document

Sep 25, 2023 263 likes •345 views

IP Routing 12 May, 2002 1 Forwarding (Routing) IP Datagrams

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SLIDE 1

12 May, 2002 1

IP Routing

2 12 May, 2002 The Computer Communication Course

Forwarding (Routing) IP Datagrams

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SLIDE 2

3 12 May, 2002 The Computer Communication Course

Direct and Indirect Delivery (I)

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12 May, 2002 The Computer Communication Course

Direct and Indirect Delivery (II)

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SLIDE 3

5 12 May, 2002 The Computer Communication Course

IP Routing Tables

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12 May, 2002 The Computer Communication Course

127.0.0.1 127.0.0.1 lo0 default 132.65.0.31 le0 132.65.0.0 direct le0 Example: A Routing Table at Host

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SLIDE 4

7 12 May, 2002 The Computer Communication Course

Example: A Routing Table at a Router (G3)

G1 192.36.200.0 192.32.128.0 128.100.0.0 1 9 2 . 1 . 2 . 1 9 2 . 1 . 2 1 . 192.10.22.0 to Internet G2

192.36.200.0 G1 128.100.0.0 G2 128.100.1.3 G1 128.100.2.1 G1 192.10.22.0 G1 192.10.20.0 Direct 192.10.21.0 Direct 192.32.128.0 Direct default G2

G3

8 12 May, 2002 The Computer Communication Course

Datagram Forwarding at a Hosts IP Layer

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SLIDE 5

9 12 May, 2002 The Computer Communication Course

Datagram Forwarding at Routers

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12 May, 2002 The Computer Communication Course

100.36.200.6 192.32.128.5 192.10.22.1 to Internet 192.10.22.22 128.10.22.22 128.10.22.17 192.32.128.7

. . . . . .

100.36.200.4 192.32.128.17 100.36.200.22 192.32.128.0 128.10.22.17 128.10.0.0 direct 192.10.22.0 direct 100.0.0.0 direct default 192.10.22.1

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SLIDE 6

11 12 May, 2002 The Computer Communication Course

120.22.108.5 132.32.12.5 192.100.22.1 to Internet 192.100.22.17 128.10.22.17 128.10.22.22 132.32.12.7

. . . . . .

120.22.108.7 132.32.128.22 120.22.108.17 10.10.23.1 132.32.128.5 132.32.128.7

. . .

132.32.12.22 132.32.0.0 128.10.22.22 10.0.0.0 192.100.22.1 128.10.0.0 direct 192.100.22.0 direct 120.0.0.0 direct default 192.10.22.1

12 12 May, 2002 The Computer Communication Course

Subnetting

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SLIDE 7

13 12 May, 2002 The Computer Communication Course

Subnetting (II)

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12 May, 2002 The Computer Communication Course

Subnetting: Subnet Addressing

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network id

subnet id host id 31