[mrtg] Re: Any ethernet switch which always floods?

Larry Sheldon lsheldon at creighton.edu
Wed Oct 17 00:08:49 MEST 2001

>     As far as I know, HUBs will only do half duplex.  If someone knows of a
> full duplex HUB, I'd love to read about it - that'd be a new one on me.

I have been playing with the concept of a "full-duplex" hub and have
come to the conclusion that that is of the order of "sound of one hand

Think about it.

Start with the "inbound" side of a port geting permission to speak.  Everything
that it says gets blatted to the "outbound" side of every other port.

OK so far--that is just ordinary hub operation.

Now, one of the other ports wnat to speak (first port still blatting).

If the second is allowed to speak, where is its stuff going to go?  All of
the outbound ports (except for that of the first speaker) are already busy.

What am I missing?

And I would like to know what the original problem-to-be-solved is.

.                                                                       .
- L. F. (Larry) Sheldon, Jr.                                            -
. Unix Systems and Network Administration                               .
- Creighton University Computer Center-Old Gym                          -
. 2500 California Plaza                                                 .
- Omaha, Nebraska, U.S.A.  68178       Two identifying characteristics  -
. lsheldon at creighton.edu                  of System Administrators:     .
- 402 280-2254 (work)                Infallibility, and the ability to  -
. 402 681-4726 (cellular)               learn from their mistakes.      .
- 402 332-4622 (residence)                                              -
. http://www.creighton.edu/~lsheldon    Adapted from Stephen Pinker     .

Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
Archive     http://www.ee.ethz.ch/~slist/mrtg
FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi

More information about the mrtg mailing list