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CIS 725

CIS 725. Service Specification. Transport Layer. Connection management End-to-end control. Application. A. F. Transport layer. Network layer. Mutual exclusion. Request Enter Release. Interface. Creq (Connection Request) Cind (Connection Indication) Cres (Connection response)

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CIS 725

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  1. CIS 725 Service Specification

  2. Transport Layer • Connection management • End-to-end control Application A F Transport layer Network layer

  3. Mutual exclusion • Request • Enter • Release

  4. Interface • Creq (Connection Request) • Cind (Connection Indication) • Cres (Connection response) • Cconf (Connection confirm) • Dreq (Disconnection request) • Dind (disconnection indication)

  5. Interface • Creq (Connection Request) • Cind (Connection Indication) • Cres (Connection response) • Cconf (Connection confirm) • Dreq (Disconnection request) • Dind (disconnection indication) • Dres (Disconnection response) • Dconf (disconnection confirm)

  6. 1 Creq1 Cconf1 Dreq1 Cind2 Cres2 Dind2 ?Creq1 ?Dreq1 ?Dreq1 !Dind2 !Dind2 !Dind2 ?Dreq1 2 6 7 7 7 !Cind2 !Cind2 ?Cres2 5 4 3 ?Cres2 !Cconf1 6 7 !Dind2 ?Dreq1

  7. ?creq1 ?creq2 ?creq2 !cind1 !cind2 ?creq2 ?creq1 ?creq1 ?cres1 ?cres2 !cconf2 !cconf1

  8. ?creq1 ?creq2 !cind1 !cind2 ?creq1 ?creq2 ?creq2 !cind2 ?creq1 ?cres1 ?cres2 !cconf2 !cconf1

  9. Transmission Control Protocol • End-to-end transport protocol • End point (IP address, port)

  10. TCP connection establishment

  11. CIS 725 Lecture 16

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