NETWORK MANAGEMENT an Overview Setelah membaca bab ini

NETWORK MANAGEMENT an Overview Setelah membaca bab ini diharapkan mampu: § Menjelaskan definisi/istilah Network Management § Memahami apa saja yang terkait dengan NM § Menjelaskan pentingnya NM, dan dampaknya terhadap biaya(cost), hasil(revenue), ketersediaan jaringan (network avaibility) – Recognize the different players and industries that have an interest in network management, and understand the different angles from which they approach the subject – Describe some of the challenges posed by network management, including those that are technical, organizational, and business ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview DEFINISI Network management refers to the activities, methods, procedures, and tools that pertain to the operation, administration, maintenance, and provisioning of networked systems. ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview • Operation deals with keeping the network (and the services that the network provides) up and • running smoothly. It includes monitoring the network to spot problems as soon as possible, ideally • before a user is affected. • Administration involves keeping track of resources in the network and how they are assigned. It • deals with all the “housekeeping” that is necessary to keep things under control. • Maintenance is concerned with performing repairs and upgrades— for example, when a line card • must be replaced, when a router needs a new operating system image with a patch, when a new • switch is added to the network. Maintenance also involves corrective and preventive proactive ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Important Factor: • Who can operate the network at the lowest cost and pass those cost savings on to customers? • Who provides better customer experience by making it easy to order communication services • and service those orders with minimal turnaround time? • Who can maintain and guarantee the highest quality of service? • Who can roll out services fast and efficiently? ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview COST • One of the main goals of network management is to make operations more efficient and operators more productive. The ultimate goal is to reduce and minimize the total cost of ownership (TCO) that is associated with the network. ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview QUALITY • Quality also includes the reliability and the availability of a communications service ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview QUALITY • Systems for the end-to-end provisioning of a service automate many of the steps that need to be performed to configure the devices in the network properly • Performance trend analysis can help network managers detect potential network bottlenecks and take preventive maintenance action before problems occur and before services and users are ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview REVENUE • Network management is not just related to cost and quality. Network management can also be a revenue enabler that opens up market opportunities that would not exist without it ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview • The Players: Different Parties with an Interest in Network Management ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview NETWORK MANAGEMENT USERS Service Provider • service providers are in the business of providing services to their customers. – any communication and networking service, such as telecommunication services (telephone, voice mail) and data services (leased lines, Internet connectivity) – the winner in the marketplace is the service provider that can turn up services and roll them out to customers the fastest, that can offer the best service level guarantees, that ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview NETWORK MANAGEMENT USERS The Enterprise IT Department • Enterprise IT departments are in charge of running the network inside an enterprise, providing the enterprise with all its internal communication needs. They are often thought of as mini service providers of communications services for the enterprise that they are part of. • it is essentially a cost center, so the focus is on how to provide the communication ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview NETWORK MANAGEMENT USERS The End User • With end users, here we are referring not to the users of the communication service —to them, network management is invisible; it is simply part of the infrastructure that keeps it all running. • Network Managers the ones who are ultimately the users of the various management systems and applications, and who rely on them as tools to get their ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Providers The Equipment Vendor • Equipment vendors are primarily in the business of selling networking equipment, not network management applications. • That means that generally they would provide just the level of management capabilities needed to not inhibit equipment sales ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Providers The Third-Party Application Vendor • management application software developed by an equipment vendor tends to support only equipment of that particular vendor. • multivendor support, meaning that the application will work well across equipment from different vendors. ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Providers The Systems Integrator • Systems integrators provide services to integrate a set of management applications with a specific network and operations support environment, often plugging functional gaps and providing interface adaptations that might be necessary to turn a set of independent applications into a turnkey solution that is customized for a specific network provider. ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities • Tantangan Teknis – Bagaimana membangun aplikasi yang dapat membantu pengelolaan jaringan – Bagaimana aplikasi tersebut dapat berkomunikasi dengan perangkat 2 jaringan yang ada ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities A. Karakteristik Aplikasi • Transaction-Based System Characteristics Pengadaan aplikasi didasari oleh kebutuhan untuk mengakses perangkat jaringan Dengan mengirimkan request ke elemen jaringan, dan memproses respon agar sesuai dengan apa yang dikehendaki Misalnya : mengaktifkan layanan ke klien jaringan. ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities Contoh Pengadaan aplikasi jaringan ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities Interrupt-Driven System Characteristics Aplikasi real-time yang dapat menerima dan merespon aktivitas jaringan Merespon SNMP paket dsb ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities Number-Crunching System Characteristics Aplikasi yang digunakan untuk memprediksi tindakan. Biasanya butuh koleksi dan pemilahan data yang besar, mungkin dibutuhkan waktu pengumpulan (periode) yang lama (trend) Contoh : • Mengidentifikasi bottleneck, • menilai apakah layanan sudah terpenuhi • Mengenali pola jaringan • Mengenali trend untuk menerapkan kebijakan masa depan ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities B. SKALA contoh : 1 klien vs 10. 000 klien Butuh tool untuk mengelola Kapasitas jaringan meningkat lebih tajam dibandingkan dengan kemampuan hardware ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities B. SKALA Aspek yang harus diperhatikan • Operation Concurrency – Bagaimana memaksimalkan konkurensi dalam komunikasi jaringan • Misal : mengumpulkan beberapa request sekaligus ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities • Event propagation – Bagaimana mengelola event dan menyalurkan dengan efisien dan mengupdate status Contoh saat mendapat event dari jaringan aplikasi manajemen dengan cepat dapat mengidentifikasi perangkat mana yang harus digunakan, port manadsb ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities • Scoping – Cara mengakses dan mamanipulasi potongan besar informasi manajemen secara efisien dan menggunakan satu kali tindakan. ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities • Distribution and addressing – Bagaimana membagi proses untuk didistibusikan ke system yang lain, menambahkan hardware dengan kemampuan lebih jika dibutuhkan, sekaligus memberikan lokasi/ alamat yg transparan, efisien tanpa membahayakan aplikasi logis dari distribusi tersebut. ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities • Memprediksi SKALA harus berdasarkan konfigurasi dan kemampuan hardware, system load – Management Operation Throughput • Per satuan waktu: menyatakan sifat dasar operasi, jumlah dan kompleksitas parameter, jumlah elemen jaringan yg terlibat. – Event Throughput • Per satuan waktu : Throughput maximum dan berkelanjutan, pengolahan dengan skenario yg telah ditentukan – Network synchronization capacity • Berapa banyak elemen jaringan (yg terlibat) yang dapat disinkronisasi oleh aplikasi per satuan waktu ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities C. Cross-Section of Technologies Teknologi yg sering digunakan dalam manajemen jaringan – Informasi Pemodelan: • bagaimana domain aplikasi dimodelkan (bagaimana perangkat jaringan, port, koneksi, user, layanan, ketergantungan dsb akan dipresentasikan) – Database: • Pengelolaan database, mengurangi query ke jaringan setiap saat. – Distributed System: • Agar memenuhi syarat untuk skala reliability dan availability, kadang systemnya sendiri perlu untuk didistribusikan. – Communication Protocols: • Protokol / aturan/ kesepakatan komunikasi dengan system lain, ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities C. Cross-Section of Technologies Teknologi yg sering digunakan dalam manajemen jaringan – Communication Protocols: • Protokol / aturan/ kesepakatan komunikasi dengan system lain, – User Interfaces • Diperlukan agar operator lebih produktif, terukur, misalnya: jumlah operasi per satuan waktu, jumlah elemen jaringan yg terlibat per satuan waktu dsb – Other Consideration • Pemahaman tentang aspek unik dari jaringan dan layanannya, beserta aspek teknis/umum lainnya tentang teknologi yang diterapkan. ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities D. Integration ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Network Management Complexities D. Integration ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Basic Component of Network Management ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Manager-Agent Communication Manager-Agent vs Client-Server ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Management Information Bases ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview MIB (not a just database) § § § § The version of installed software Utilization of ports must be assessed Environmental data is monitored Fans are monitored Packet counters for different interfaces (DOS? ) Protocol timeout parameters Firewall rules that define a security policy ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview Pros- Cons of Dedicated Management Network ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

NETWORK MANAGEMENT an Overview § advantages of using a dedicated management network § Reliability § Interference Avoidance § Ease of Network Planning § Security § Reason of using a Shared network § Cost & Overhead § No Reasonable Alternative ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO

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NETWORK MANAGEMENT an Overview xxx ELKAF RAHMAWAN PRAMUDYA, M. Kom UNIVERSITAS DIAN NUSWANTORO