eTwinning - TCP/IP: Internet layer

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eTwinning - TCP/IP: Internet layer

  1. 1. The TCP/IP Internet layer
  2. 3. Functions of the TCP/IP Internet layer <ul><li>The purpose of the Internet layer is to select the best path through the network for packets to travel. </li></ul><ul><li>The main protocol that functions at this layer is IP. </li></ul><ul><li>Best path determination and packet switching occur at this layer. </li></ul>TCP/IP model
  3. 4. Protocols that operate at the TCP/IP Internet layer <ul><li>IP provides connectionless , best-effort delivery routing of packets. IP is not concerned with the content of the packets but looks for a path to the destination. </li></ul><ul><li>Internet Control Message Protocol (ICMP) provides control and messaging capabilities. </li></ul>
  4. 5. Protocols that operate at the TCP/IP Internet layer (cont) <ul><li>Address Resolution Protocol (ARP) determines the data link layer address, or MAC address, for known IP addresses. </li></ul><ul><li>Reverse Address Resolution Protocol (RARP) determines the IP address for a known MAC address. </li></ul>TCP/IP protocol suite
  5. 6. IP performs the following operations <ul><li>Defines a packet and an addressing scheme. </li></ul><ul><li>Transfers data between the Internet layer and </li></ul><ul><li>network access layer. </li></ul><ul><li>Routes packets to remote hosts. </li></ul>
  6. 7. IP is sometimes referred to as an unreliable protocol . This does not mean that IP will not accurately deliver data across a network. IP is unreliable because it does not perform error checking and correction. That function is handled by upper layer protocols from the transport or application layers.
  7. 8. Special Thanks <ul><li>Thanks for watching my presentation!! </li></ul><ul><li>Hope you had learned something about TCP/IP in this simple presentation. </li></ul>

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