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Chapter 6:Network Layer, DIFFA MAHARANI NINGTYAS, 201710893, MINDMAP…

- - - - End to End Transport processes: Addressing end devices, Encapsulation, Routing, and De-encapsulating
    - - Common Network Layer Protocols: Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6)
      - Legacy Network Layer Protocols: Novell Internetwork Packet Exchange (IPX), AppleTalk, and Connectionless Network Service (CLNS/DECNet)
  - - - Connectionless – No connection is established before sending data packets
      - Best Effort (unreliable) – No overhead is used to guarantee packet delivery
      - Media Independent – Operates independently of the medium carrying the data
    - - As an unreliable Network layer protocol, IP does not guarantee that all sent packets will be received. Other protocols manage the process of tracking packets and ensuring their delivery.
  - - - Version, Dirrentiated Services (DS), Time-to-live (TTL), Protocol, Source IP Address, and Destination IP Address.
    - - Internet Header Length (IHL), Total Length, Header Checksum, Identification, Flags, Fragment Offset.
- - - - Hosts must maintain their own, local, routing table to ensure that network layer packets are directed to the correct destination network. The local table of the host typically contains: Direct connection, Local network route and Local default route.
- - - - RAM – volatile : Running IOS, Running configuration file, IP routing and ARP tables, Packets buffer
      - ROM – Non-Volatile : Bootup instructions, Basic diagnostic software, and Limited IOS
      - NVRAM – Non-Volatile – Stratup configuration file
      - Flash – Non-Volatile : IOS and Other system file