From: ccie az (ccieaz@googlemail.com)
Date: Sat Apr 12 2008 - 11:06:57 ART
Thanks Edward.
I made a attempt at drawing a diagram from your example based on the
lab i was working on. I can see where it would help in complex labs
where you need to understand what is going on.
Az
2008/4/12 Edward Balow <ebalow@hotmail.com>:
>
> I did not complete a L2 diagram at my first lab attempt and I did on my
> second attempt. I fully believe this is one of the contributing factors to
> my passing on the second try.
>
> The below information is talking about practice labs only to avoid NDA
> violations-------
>
> Once you get to the more complex practice labs, it should become more
> apparent. In short, you're going to end up with a lot of trunk links and
> access links and different vlans on different switches. Sometimes even
> dot1q tunneling.
>
> A big picture of what's going on is generally required. To make matters
> more complicated, sometimes information is left off. For example, assume
> you're told to put all switches in transparent mode but are not specifically
> told to create each VLAN on each switch. Obviously the vlans get created on
> the switches that have access ports on them. But what about intermediary
> switches? It's easily seen which vlans you need to create on the switches
> in the middle, and which ones you don't, based on a diagram.
>
> I'd say the "missing" information is one of the main reasons why a L2
> diagram is helpful.
>
> My L2 diagrams looked something like this (again, practice lab, not real
> lab)
>
> r1 r2 r5
> |f0/1 |f0/2 |f0/5
> | | f0/21 trunk |
> ------------|----------------|------------------------|
> v5 sw1 v7 | | v5 sw2 |
> ------------| |-------------------------|
>
> pretty crude in ascii, but you should get the idea. You know exactly what
> trunk links go to what switch. You also know vlan 5 must trunk between sw1
> and sw2. However, you can remove/prune vlan 7 if I want.
>
> > Date: Sat, 12 Apr 2008 13:42:02 +0100
> > From: ccieaz@googlemail.com
> > To: ccielab@groupstudy.com
> > Subject: Lab Diagrams
> >
>
> > Hi all,
> >
> > This maybe a pretty stupid question, but here goes.
> >
> > I am just starting some of the practice labs now and I heard some
> > people draw a Layer2 diagram as well as the others. I don't understand
> > how/why this L2 diagram would help.
> >
> > My question is the L2 diagram just composes the switches and links
> > between them right? Whats the benefit behind this? Maybe its just me,
> > but the L2 side of things just seems easy to me.
> >
> > Has anyone got any example diagrams that they draw before a practice
> > lab that i could take a look at?
> >
> > Thanks
> >
> > Az
> >
> >
> > Pass the CCIE in six weeks, Guaranteed!
> > http://www.certscience.com/CCIE
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> >
>
>
> ________________________________
> Use video conversation to talk face-to-face with Windows Live Messenger. Get
> started!
Pass the CCIE in six weeks, Guaranteed!
http://www.certscience.com/CCIE
This archive was generated by hypermail 2.1.4 : Thu May 01 2008 - 08:25:50 ART