page 58, Interconnections, 2e

Algorhyme

I think that I shall never see
A graph more lovely than a tree.

A tree whose crucial property
Is loop-free connectivity.

A tree that must be sure to span
So packets can reach every LAN.

Firest, the root must be selected.
By ID, it is elected.

Least-cost paths from root are traced.
In the tree, these paths are placed.

A mesh is made by folks like me,
Then bridges find a spanning tree.

--Radia Perlman

Tom Lisa wrote:

> Priscilla,
> 
> Didn't Radia write a poem that starts something like
> "I have never seen a tree as lovely as a spanning tree?"
> 
> BTW, is it still possible to get a "free" copy of 802.1s & w.
> I looked on the IEEE site but couldn't find them.
> 
> Prof. Tom Lisa, CCAI
> Community College of Southern Nevada
> Cisco ATC/Regional Networking Academy
> "Cunctando restituit rem"
> 
> Priscilla Oppenheimer wrote:
> 
>   Get a copy of Cisco LAN Switching by Kennedy Clark and Kevin
>   Hamilton. It's
>   right up there with Doyle as one of the best networking books ever
>   written.
>   It makes switching fun again! ;-) It's well written, technicaly
>   accurate and
>   interesting, and it doesn't just throw the latest marketing trends at
>   you
>   with no explanation of their history, like some switching material
>   does.
> 
>   Also, CertificationZone has some good articles and study materials
>   for
>   switching.
> 
>   By the way, switching isn't as dull as it might seem. The spanning
>   tree
>   algorithm can be quite interesting to study. And there are
>   enhancements to
>   it now like 802.1s (multiple spanning trees) and 802.1w (rapid
>   spanning tree
>   protocol).
> 
>   Good luck!
> 
>   Priscilla Oppenheimer
> 
>   Nakul Malik wrote:
>   >
>   > Hi all,
>   > I started off studying routing and found it to be a topic that
>   > interested me
>   > a lot. I just couldn't get enough of halabi Doyle and the rest.
>   > I studied a
>   > lot, practiced a lot and was thrilled when I passed the exam in
>   > beta.
>   >
>   > Next I started studying for switching. That didn't turn out as
>   > well as I
>   > thought it would. I couldn't just work up the same level of
>   > interest. I have
>   > been analyzing the reasons and have come up with the following:
>   > 1. I've never worked with switches much, so I don't know too
>   > much about
>   > them, as opposed to routers.
>   > 2. Study materials.
>   >
>   > I've been wondering, has anyone else faced similar problems in
>   > their quest
>   > for CCNP.
>   >
>   > Also, could someone recommend some good materials/resources for
>   > switching
>   > other than the official Cisco book?
>   >
>   > Any/all answers would be appreciated.
>   > Thanks.
>   > -N
>   >
>   > --
>   > Nakul Malik
>   >
>   > H-342
>   > New Rajendra Nagar
>   > New Delhi - 110060
>   >
>   > Mobile: +91-9811424477
>   > Ph: +91-11- 2582 3488
>   >       +91-11- 2585 0155
>   > Fax:: +91-11- 2575 2904
>   >
>   > [EMAIL PROTECTED]
>   **Please support GroupStudy by purchasing from the GroupStudy Store:
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