reverse bit sequence for each byte.
-> direction eth reads each byte
x x x x x x x x
<- direction t/r reads each byte
43 (0100 0011) in eth becomes C2 (1100 0010) in token ring
5C.02.00.01.43.22 in eth mac becomes 3A.40.00.80.C2.44 in t/r
mkezlev
CCNA,CCNP
""Michael Snyder"" <[EMAIL PROTECTED]> wrote in message
97ribk$r47$[EMAIL PROTECTED]">news:97ribk$r47$[EMAIL PROTECTED]...
> What is the bit by bit method of going from a Ethernet Mac address to a
> Tokenring Mac address?
>
> I've read the paper's, I still can't do it, and I've been doing HEX for
> years.
>
>
> For example
>
> 00.00.0c.65.43.21 Ethernet MAC would be?
>
> 0000 0000. 0000 1100.0110 0101.0100 0011.0010 0001
>
> Next step is?
>
> a) reverse complete bit sequence? 1000 0100.1100 0010.1010 0110. 0011
0000.
> 0000.0000
> b) reverse sequence in groups of four? 0001 0010.0011 0100.0101 0110.1100
> 0000 0000
> c) Transpose bits in groups of four, per byte? a.b ->b.a (seen this one a
> lot in programing)
>
> help?
>
>
>
>
>
> ""perryb"" <[EMAIL PROTECTED]> wrote in message
> 007901c0a011$52ec4d00$1e00a8c0@GOLDIE1">news:007901c0a011$52ec4d00$1e00a8c0@GOLDIE1...
> > Hi all,
> >
> > I'm goinf to diverge from the star/bus issue in Mr. Rossi's paper, and
> > direct everyones attention to what I believe could be a mistake
(clerical
> > error) in the paper on the DLSW piece.
> >
> > Directly underneath Mr. Rossi's very first DLSW diagram, you see the RIF
> > values for "Router_A," and "Router_B." Isn't the RIF show for
"Router_B"
> > just a tad bit inverted and incorrect ? Shouldn't it read
> "0630.00a1.0230"
> > instead? The reason that I say this is because I had a "not so
different"
> > question on a recent exam. On this exam there were no "none of the
above"
> > responses and only two possible valid RIFs. The only plausable response
> was
> > in the order that I describe above.
> >
> >
> > Forgive me if this has already been pointed out before.
> > ----- Original Message -----
> > From: <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Monday, February 26, 2001 6:45 AM
> > Subject: RE: Lou Rossi's Token Ring paper
> >
> >
> > > I agree with Nigel. It should be a physical star and a logical ring.
> > >
> > > Cletus Ugwu
> > >
> > > -----Original Message-----
> > > From: Nigel van Tura [mailto:[EMAIL PROTECTED]]
> > > Sent: Monday, February 26, 2001 7:29 AM
> > > To: Bradley J. Wilson; [EMAIL PROTECTED]
> > > Subject: RE: Lou Rossi's Token Ring paper
> > >
> > >
> > > But Bradley
> > >
> > > If we connect all to the MAU as a central hub then it becomes a
physical
> > > star and a logical ring inside the MAU.
> > >
> > > Or what ?
> > > Nigel van Tura
> > >
> > > -----Original Message-----
> > > From: Bradley J. Wilson [mailto:[EMAIL PROTECTED]]
> > > Sent: 24 February 2001 01:50
> > > To: cisco
> > > Subject: Lou Rossi's Token Ring paper
> > >
> > >
> > > I'm sitting here reading Lou Rossi's Token Ring paper, and right off
the
> > bat
> > > I have a question:
> > >
> > > He says that token ring is "a physical ring and a logical bus" - but
> isn't
> > > this backward? Isn't it a physical bus and a logical ring? We're not
> > > physically connecting stations together in a ring - they're all
plugged
> > into
> > > a MAU and the "ring" is a logical entity inside the MAU, isn't it?
> > >
> > > Thanks in advance,
> > >
> > > BJ
> > >
> > >
> > >
> > > _________________________________
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> >
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> >
>
>
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