On Wed, 2003-03-26 at 10:17, Doom wrote: > Hmm ... nici eu. Oare putem primi mai multe detalii sa aruncam si noi un > ochi?
Ok, detalii nu am despre produsul despre care am vorbit in mail-ul initial (a fost demult, intr-un chip parca). Dar: http://support.baynetworks.com/library/tpubs/terms/gloss_p.htm > passive hub > Central connecting device in a network that joins wires from several > stations but does not provide signal processing or regeneration. See > also active hub, intelligent hub. http://www.infinisource.com/features/networking02.html > A hub can be passive, active or switching. > > Passive hubs do not have any electronics. Passive hubs can't clean up > or amplify the signals, and, in fact, actually absorb some of the > signal's transmissions. This limits the distance that networked > computers can be located apart from each other if you purchase a > passive hub. > > Active hubs have electronic components in them that can amplify and > clean up data transmission as well as enabling signal regeneration. > Computers networked with an active hub are less subject to data > degradation (or errors) and the computers can be physically located > further apart than with a passive hub. > > Switching, switches, or intelligent hubs have the same capabilities as > active hubs and some come with support for network management > protocols. Some switching hubs include circuitry that efficiently > routes signals between ports on the hub enabling speedy 200Mbps data > transmission. Even though this is the most expensive hub to purchase, > complete networking kits including the cable, PCI network interface > cards and the switch can be purchased for under $100. Link-uri/quotes ce par ARCNet-specific: http://www.connectworld.net/cgi-bin/iec/ADP7000 > The passive hub allows up to three computers to be connected to a > single wire drop. When only two computers are connected, the open port > needs a terminator L0396. > As a general rule, only one passive hub can be used between the PC and > an active hub, using any more than that would weaken the signal. http://www.novell.com/documentation/lg/glossary/index.html?glossenu/data/gl2504.html > passive hub > > A device used in some network topologies to split a transmission > signal, allowing additional workstations to be added. In ARCnet, these > are unpowered connecting boxes. Unused ports on passive hubs must be > terminated. Partea interesanta e ca, cu exceptii notabile ('passive ethernet transceiver hubs', care vin cu cate 24/32 porturi si mii de usd la pret, par sa fie legate de transmisii de video over utp), nu am gasit nici un fel de produse 'passive hub' pe ethernet cf goolge. these are the facts georgeb -- George Barbarosie <[EMAIL PROTECTED]> intelinet.ro SRL -- Pentru dezabonare, trimiteti mail la [EMAIL PROTECTED] cu subiectul 'unsubscribe rlug'. REGULI, arhive si alte informatii: http://www.lug.ro/mlist/
