Pertemuan 03 Routing - PowerPoint PPT Presentation

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Pertemuan 03 Routing

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  1. Matakuliah : H0451/Praktikum Jaringan Komputer Tahun : 2006 Versi : 1/0 Pertemuan 03Routing

  2. Learning Outcomes Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu : • Menjelaskan mengenai Routing

  3. Outline Materi • Layanan • Addressing

  4. TCP/IP Concepts

  5. IP datagram

  6. Connection Control • Connection oriented • Virtual circuit defined for data trasfer • Connectionless • Each PDU data transfer (datagram) treated independently

  7. Addressing • Addressing level • Addressing scope • Connection identifiers • Addressing mode

  8. Addressing Level Level in communications architecture at which entity is named • Unique physical address for each end system (workstation, server), each intermediate system (router), usually is referred as MAC address or Hardware address • Network-level address (logical address) • IP address or internet address • Used to route PDU through network • At destination data must routed to some process • Each process assigned an identifier • TCP/IP: port, OSI: Service access point (SAP)

  9. Addressing Scope • Global • Global nonambiguity, Identifies unique system • Enables internet to route data between any two systems • Need unique address for each device interface on network • MAC address on IEEE 802 network Enablesnetwork to route data units through network and deliver to intended system • Addressing scope only relevant for network-level addresses • Port or SAP above network level is unique within system, need not be globally unique (e.g port 80 web server listening port in TCP/IP)

  10. IPv4 Address Formats

  11. Addresses with subnetting

  12. Subnets and Subnet Masks • Allow arbitrary complexity of internetworked LANs within organization • Insulate overall internet from growth of network numbers and routing complexity • Site looks to rest of internet like single network • Each LAN assigned subnet number • Host portion of address partitioned into subnet number and host number • Local routers route within subnetted network • Subnet mask indicates which bits are subnet number and which are host number

  13. Equipment • Routers: • At Network layer • Can connect dissimilar LANs on the same protocol • Some routers have support for may protocols and protocol conversion • Can build large complex networks with complex traffic routing • Limits the flow of broadcasts • Load sharing and balancing can be done • Complex features as Network Address Translation (NAT), authentication, firewalling, etc. possible