Internetworking Chapter 4 - University of Illinois Urbana ...

Internetworking

Chapter 4

Internetworking protocols (IP, ARP, DHCP, ICMP, VPN)

Routing, Naming, Addressing

Global Internet (+PD Section 9.1 for Name Service)

CS/ECE 438

? Robin Kravets, UIUC - Spring 2007

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The Big Picture

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you are here

CS/ECE 438

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Topics




Overview of the Internet






Internet Routing










Message formats, topology, history,

interconnection

Delivery models: Unicast, Multicast, Anycast

Forwarding (MTU, tunneling/VPNs), ICMP

Network management (TE)

Internet Addressing/Naming



CS/ECE 438

DNS, NAT; ARP, DHCP; Mobility

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Overview of the Internet

CS/ECE 438

? Robin Kravets, UIUC - Spring 2007

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What is the Internet?













30,925 ISPs, 2,600,000 routers, 289,989

subnets, 625,226,456 hosts

Rich array of systems and protocols

ISPs compete for business, hide private

information, end-hosts misbehave, complex

failure modes, cross-dependencies and

oscillations

Yet everyone must cooperate to ensure

reachability



CS/ECE 438

Relies on complex interactions across multiple

systems and protocols

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