Ken Diliberto wrote: > > My understanding of a 10/100 hub is it has a bridge/switch > internally to
Technically there's no such thing as a 10/100 hub. If a device connects two different speed networks, it has to do store and forward of frames (not just forwarding of bits) and hence is a bridge or switch. I wouldn't call a device that does both, includes hub ports and an internal bridge/switch as you mention, "a hub," but product names are chosen by marketing people not engineers. Shall we create a new term? Brub or swub or hubge or hubtch. To quote my co-author in Troubleshooting Campus Networks, it's amazing the terminology that can result when one engineer and two marketing people go out to lunch. He threw that in a few times in our book. :-) Priscilla > connect the 10Mbps side to the 100Mbps side (a repeater > wouldn't be able > to do this). > > >>> "Priscilla Oppenheimer" 09/10/02 > 05:03PM > >>> > Ken Diliberto wrote: > > > > But can the internal switch in a 10/100 hub work in full > > duplex??? > > What is an "internal switch in a hub?" Is that another case of a > marketing > term? ;-) I've never heard of the term. If it's really a hub, > then it's > just > a repeater. Full duplex has no meaning in this contect. Keep in > mind > that no > self-respecting Ethernet guru EVER used the terms half-duplex or > full-duplex > when talking about Ethernet until a few years ago. Ethernet was > plainly > and > simply CSMA/CD. (MA stands for multiple access, and is of > course not > full > duplex.) Hubs come from this environment. > > Nobody used the term "switch fabric" or "hub fabric" or > "internal > switch" > either. ;-) A hub was a dumb physical-layer repeater that did > the > things I > mentioned below, (with a few data-link-layer jobs thrown in to > ensure > collision detection works correctly for the end hosts in a > network > extended > with repeaters/hubs.) > > Priscilla > > > > > (Don't know why I decided to ask that question other than to > > cause > > trouble...) > > > > Ken the Trouble Maker > > [snip] > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=53129&t=52973 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
