IP Hierarchical Routing 15 February, 2001 1 Hierarchical Routing - - PDF document

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Nov 01, 2023 115 likes •202 views

IP Hierarchical Routing 15 February, 2001 1 Hierarchical Routing

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1

15 February, 2001 1

IP Hierarchical Routing

2 15 February, 2001 The Computer Communications Course

Hierarchical Routing

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2

3 15 February, 2001 The Computer Communications Course

Hierarchical Routing

15 February, 2001 The Computer Communications Course

Intra-AS and Inter-AS routing

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5 15 February, 2001 The Computer Communications Course

Intra-AS and Inter-AS routing

15 February, 2001 The Computer Communications Course

Routing in the Internet

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7 15 February, 2001 The Computer Communications Course

Internet AS Hierarchy

8 15 February, 2001 The Computer Communications Course

Hierarchical Routing in the Internet

AT&T MCI AS1 AS2 AS3 Backbone

IGP IGP IGP EGP EGP EGP EGP

Border router

AS: Autonomous System = routing domain IGP: Interior Gateway Protocol: Intra-domain routing EGP: Exterior Gateway Protocol: Inter-domain routing

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9 15 February, 2001 The Computer Communications Course

Intra-AS Routing: IGP

15 February, 2001 The Computer Communications Course

RIP (Routing Information Protocol)

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11 15 February, 2001 The Computer Communications Course

RIP (Routing Information Protocol)

15 February, 2001 The Computer Communications Course

RIP: Link Failure and Recovery

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13 15 February, 2001 The Computer Communications Course

RIP: Implementation Aspects

15 February, 2001 The Computer Communications Course

RIP Table processing

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15 15 February, 2001 The Computer Communications Course

RIP Table example

Destination Gateway Flags Ref Use Interface

------------------- -------------------- ----- ----- ------ ---------

127.0.0.1 127.0.0.1 UH 0 26492 lo0 192.168.2. 192.168.2.5 U 2 13 fa0 193.55.114. 193.55.114.6 U 3 58503 le0 192.168.3. 192.168.3.5 U 2 25 qaa0 224.0.0.0 193.55.114.6 U 3 0 le0 default 193.55.114.129 UG 0 143454