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Posted by Christopher Nelson on May 10, 2005, 5:19 am
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anoop wrote:
> Christopher Nelson wrote:
> > I'm reviewing IEEE Std 802.1D-2004 and will have to look at
> > an implementation of -1998 and consider what's necessary to
> > upgrade it to the new standard. While I've found a few
> > notes about incompatibilities and gotchas in -2004, I've not
> > found any comprehensive list of "this is what changed since
> > 1998" or "These 3 state machines didn't exist in -1998" or
> > anything. Has anyone published a comparison of the two
> > standards?
>
> I don't know if such a list exists anywhere. AFAIK, the main
> change in the 2004 version was the introduction of Rapid Spanning
> Tree Protocol (RSTP). There were probably minor modifications to
> other parts such as bug fixes or minor optimizations to GARP/GMRP.
Hmmm. My question was imprecise. I know that a major difference
between 1D-1998 and 1D-2004 is adding RSTP but even then the RSTP of
802.1w-2001 is different from the RSTP of 802.1D-2004 and that's really
the focus of my work. Fortunately, I've found that comparing the state
diagrams in section 17 (of .1w and .1D) shows the differences pretty
clearly. An introduction describing the diferences would be nice but
isn't as important as I thought it would be.
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