Chapter 4: Network Layer

Chapter goals:

• understand principles behind network layer services:

  • routing (path selection)
  • dealing with scale
  • how a router works
  • advanced topics: IPv6, multicast

• instantiation and implementation in the Internet

Overview:

• network layer services

• routing principle: path selection

• hierarchical routing

• IP

• Internet routing protocols reliable transfer

  • intra-domain
  • inter-domain

• what’s inside a router?

• IPv6

• multicast routing

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