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Christopher Nelson
Guest
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 Posted:
Wed May 04, 2005 4:20 pm Post subject:
802.1D-1998 vs. 802.1D-2004 |
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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?
Chris |
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Albert Manfredi
Guest
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| Posted:
Thu May 05, 2005 12:20 am Post subject:
Re: 802.1D-1998 vs. 802.1D-2004 |
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"Christopher Nelson" <cnelson@nycap.rr.com> wrote:
| Quote: | 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?
|
The most obvious difference, in my view, is that IEEE 802.1D-2004
incorporates IEEE 802.1w, i.e. the Rapid Spanning Tree Protocol. RSTP is
now the default protocol.
Bert |
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anoop
Guest
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| Posted:
Mon May 09, 2005 11:58 pm Post subject:
Re: 802.1D-1998 vs. 802.1D-2004 |
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Christopher Nelson wrote:
| Quote: | 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.
Anoop |
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Christopher Nelson
Guest
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| Posted:
Tue May 10, 2005 4:20 pm Post subject:
Re: 802.1D-1998 vs. 802.1D-2004 |
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anoop wrote:
| Quote: | 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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