Network Maintenance

Network Maintenance محمدأسعد أبوالكاس سليمانصلاحأبوطير محمدنهيل العثماني عمر جهاد الحايك رشديأديب حميد Group 6 فاطمةطاهر لولو

Introduction** Telecommunication networks evolve from year to year, and increasingly people rely on these networks for conducting their business. As a result, performance and reliability of these infrastructures have become an essential requirement in today’s world.

Basic Terms Network BPS INTERNET Band Width LAN Router TCP WAN Firewall FTP Protocol

a network is a series of points interconnected by some communication medium and have paths. Network must have identifier or address to locate a point on a path. Some procedure or method to be use to communicate with different points. DEFINITIONS

Network Maintenance • Maintenance is concerned with performing repairs and upgrades for example: • when equipment must be replaced • when a router needs a patch for an operating system image • when a new switch is added to a network

Maintenance involves corrective and preventive measures to make the managed network run "better“. • such as : • adjusting device configuration parameters.

for better network , we should take attention from these categories : • cabling and connection technologies : • hubs, switches, routers. • network operating systems and protocols • file, connection. • security • performance analysis and optimization

Network cables A patch cable A patch cable connects two network devices. Network patch cables are typically CAT5 or CAT5e Ethernet cables linking a computer to a nearby hub, switch or router.

At first : • let's see the general shape of the cable and its connections.. • This is the general shape of the cable after removal of upper crustfrom it. • It Contains 8 wires • There must be a special connector , which is called “ connector “ , " RJ45 " or " RJP "

Color-code standards • simple pin-out diagrams of the two types of UTP Ethernet cables. Note that the TX (transmitter) pins are connected to corresponding RX (receiver) pins, plus to plus and minus to minus. And that you must use a crossover cable to connect units with identical interfaces. If you use a straight-through cable, one of the two units must, in effect, perform the cross-over function.

Two wire color-code standards apply: EIA/TIA 568A and EIA/TIA 568B.The codes are commonly depicted with RJ-45 jacks as follows (the view is from the front of the jacks):

If we apply the 568A color code and show all eight wires, our pin-out looks like this: Note that pins 4, 5, 7, and 8 and the blue and brown pairs are not used in either standard. Quite contrary to what you may read elsewhere, these pins and wires are not used or required to implement 100BASE-TX duplexing--they are just plain wasted.

Some Network Management Functions Design Installation/Upgrade Maintenance/Fault Management Monitoring/Performance Management Documentation/Configuration Management Accounting Security Management And More!

Design Network WANs, LANs, telecommunications are designed to support peak traffic traffic analysis and growth projections used in design process Network modeling software for simulating LAN performance available complex networks difficult to model

Designing for Reliability most/many problems can be avoided at the design stage this is true of all engineering endeavors Divide networks into small, separate pieces use hubs, concentrators when a failures occur affects smaller number of users easier to isolate problem Keep spare parts, equipment, and network tools available Make disaster recovery plans network outages will occur computers, drives will break

Local Area Networks

GoOd lUkE GrOuP 6

وفى النهاية نسأل الله العظيم رب العرش العظيم أن يوفقنا لما يحبه و يرضاه ، إنه سميع مجيب الدعاء

Network Maintenance