4. Merikoi apo toys oroys poy xrhsimopoiountai se ayto to keimeno.

8a deite syxna toys oroys client kai server na xrhsimopoiountai se ayto to keimeno. Einai synh8ws arketa sygkekrimenoi oroi alla se ayto to keimeno exw genikeusei ligo toys orismous toys, etsi wste na shmainoyn ta ejhs:

pelaths (client)

To mhxanhma h programma poy jekina mia prajh h mia sundesh gia to skopo ths apokthshs kapoiwn yphresiwn h dedomenwn.

diakomisths (server)

To mhxanhma h to programma poy dexetai eiserxomenes syndeseis apo pollapla apomakrysmena mhxanhmata kai parexei yphresia h dedomena se ayta.

Aytoi oi orismoi den einai oute polu egkyroi, alla parexoyn ena meso gia na jexwrisoyme tis duo akres twn syndesewn systhmatwn pros shmeio, opws to SLIP h to PPP poy pragmatika den exoyn pelates (clients) kai diakomistes (servers).

Alloi oroi poy 8a deite einai oi ejhs:

Bindery

To bindery einai mia ejeidikeymenh bash dedomenwn apo8hkeyshs plhrofories ry8misewn toy diktuoy se enan diakomisth arxeiwn Novell . Pelates toy Netware mporoun na rwthsoyn to bindery gia na paroyn plhrofories gia dia8esimes yphresies, dromologhseis kai plhrofories xrhstwn.

Frame Type

einai enas oros poy xrhsimopoieitai gia na perigracei to pragmatiko prwtokollo poy xrhsimopoieitai gia na metaferoyme ta IPX (kai IP) datagrams sta diafora tmhmata diktuoy Ethernet. Yparxoyn tessera koina. Einai ta:

Ethernet-II

Ayto einai mia ananewmenh ekdosh toy arxikou protupoy ethernet DIX. Sto Novell exei do8ei mia epishmh taytothta anagnwrishs prwtokolloy kai ayto shmainei oti kai to IPX kai to IP mporoun na synyparxoyn armonika se ena periballon Ethernet-II. Ayto xrhsimopoieitai syxna se periballonta Novell kai einai mia kalh epilogh.

802.3

Ayto einai ena prwtokollo ths I.E.E.E. poy orizei ena mhxanismo Anixneyshs Ferontos Pollaplwn Prosbasewn me Entopismo Sygkrousewn (Carrier Sense Multiple Access me Collision Detection (CSMA/CD)). Basisthke sto arxiko protypo Ethernet DIX, me mia shmantikh tropopoihsh, o tupos toy pedioy ths taytothtas toy prwtokolloy metatraphke se ena pedio mhkoys (length field). Gi' ayto to logo to IPX pragmatika den prepei na to trejoyme edw. To IEEE 802.3 sxediasthke gia na metaferei MONO paketa IEEE 802.2 alla yparxoyn pragmatopoihseis toy poy to xrhsimopoioun gia na metaferoyn paketa IPX amesa kai periergws leitoyrgei. Na to apofugete ektos kai an epixeireitai na allhlepidrasete me diktyo poy exei hdh exei ry8mistei na xrhsimopoiei.

802.2

Ayto einai ena I.E.E.E. prwtokollo poy orizei ena sunolo apo diadikasies Elegxoy Logikwn Syndesewn (Logical Link Control). Parexei enan aploiko tropo synuparjhs diaforetikwn prwtokollwn, alla einai arketa periorismeno se ayto to 8ema. To Novell xrhsimopoiei ena anepishmo Service Address Point (ws taytothta prwtokolloy) alla afou epishs oloi to xrhsimopoioun, den exei akomh paroysiasei megalo problhma.

SNAP

To SNAP einai ena Prwtokollo Prosbashs se ypodiktya. Ayto einai sxediasmeno panw apo ta 802.3 kai 802.2. Epekteinei thn ikanothta yposthrijhs pollaplwn prwtokollwn toy 802.2 kai parexei orismena metra symbatothtas me yparxontes tupoys paketwn Ethernet kai Ethernet-II.

IPX

To Internet Packet eXchange (IPX) einai ena prwtokollo poy xrhsimopoieitai apo thn Novell gia na parexei endodiktyakh yposthrijh gia to proion toys netware (tm). To IPX einai paromoio se leitoyrgia me to prwtokollo IP to opoio xrhsimopoieitai apo to thn koinothta toy tcp/ip.

Dieu8ynsh Diktuoy IPX

Ayth einai enas ari8mos poy prosdiorizei monadika ena sygkekrimeno IPX diktyo. H synh8hs grafh ths dieu8ynshs ayths einai se dekaejadiko susthma. Ena paradeigma mporei na moiazei me:0x23a91002.

Eswteriko Diktyo IPX

Ayto einai ena eikoniko IPX diktyo. Einai eikoniko giati den antistoixei se kapoio fysiko diktyo. Xrhsimopoieitai gia na parexei ena meso monadikhs taytopoihshs kai diey8ynsiodothshs enos sygkekrimenoy IPX mhxanhmatos. Ayto einai genika mono xrhsimo se mhxanhmata me IPX poy anhkoyn se perissotera apo ena fysika IPX diktya san diakomistes arxeiwn. H dieu8ynsh einai kwdikopoihmenh sthn idia morfh opws kai gia ta fysika IPX diktya.

RIP

To Prwtokollo Plhroforiwn Dromologhshs (Routing Information Protocol) einai ena prwtokollo poy xrhsimopoieitai gia na diadwsei aytomata dromologhshs diktuwn se ena diktyo IPX. Einai paromoio se leitoyrgia me to RIP poy xrhsimopoieitai apo thn koinothta tcp/ip.

NCP

To Basiko Prwtokollo Netware (Netware Core Protocol) einai ena prwtokollo diktyakou systhmatos arxeiwn, sxediasmeno apo thn etaireia Novell gia proion to Netware(tm). To NCP einai paromoio se leitoyrgia me to NFS poy xrhsimopoieitai apo thn koinothta tcp/ip.

SAP

To Prwtokollo Diafhmishs Yphresias (Service Advertisement Protocol) einai ena prwtokollo sxediasmeno apo thn etaireia Novell, poy xrhsimopoieitai gia na diafhmisei yphresies diktuoy se ena periballon Netware (tm).

Dieu8ynsh Ylikou (Hardware address)

Ayto einai enas ari8mos monadika prosdiorizei ena mhxanhma se ena fysiko diktyo, sto epipedo prosbashs sto fysiko meso. Paradeigmata tetoioy tupoy einai oi : Diey8unseis Ethernet (Ethernet Addresses) Mia dieu8ynsh Ethernet einai genika kwdikopoihmenh ws eji dekaejadikes times xwrismenes metaju toys me ton xarakthra "anw katw teleia" p.x. 00:60:8C:C3:3C:0F

Diadromh - dromologio (route)

To route einai h diadromh poy ta paketa sas akoloy8oun mesa sto diktyo gia na f8asoyn sto proorismo toys.