From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Mon Oct 29 2007 - 00:58:50 ART
The amount of issues that are reported related to topology errors but
are actually just a case of "topology confusion" (physical vs logical)
is really high. On top of that add in some dot1q tunneling ;-)
--Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP) bdennis@internetworkexpert.com
Internetwork Expert, Inc. http://www.InternetworkExpert.com Toll Free: 877.224.8987 Direct: +1.775.852.3995 (Outside the US and Canada)
Joseph Saad wrote: > I wonder if having a physical topology that never changes or 300 labs that > always use the same topology or 2000-page books without a single error would > help any one. > > We, human, learn from our mistakes - mostly. > > I am against 100% error-free books. Because it is when we stumble over > something we learn lessons. It will also discourage people from doing it > themselves. The research process in GS, or the Vendors Forum or Cisco > Website (DocCD or whatever) is what enriches the learning experiience. > > I would Never have this 100% trust in a single book unless I have labbed it > up over and over again and things work consistently. > > As my manager says "Clarity comes out of confusion". And if you are not > confused first, you'll not that you are actually clear now :-) > > I wouldn't mind few inconsistencies for the larger benefit of learning and > understanding. > > My 2 cents. > > Joseph. > > On 10/29/07, Brian Dennis <bdennis@internetworkexpert.com> wrote: >> Kevin, >> The only possible physical changes would be about 3 or 4 of the >> switching labs that are referencing additional device connections but >> it's nothing major. It'll only take me 15 minutes to adjust those labs >> so that there isn't any confusion. I'll upload the changes later tonight. >> >> That being said when you get past the switching section you are >> required to build the layer 2 topology without being told what to do ;-) >> >> Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP) >> bdennis@internetworkexpert.com >> >> Internetwork Expert, Inc. >> http://www.InternetworkExpert.com >> Toll Free: 877.224.8987 >> Direct: +1.775.852.3995 (Outside the US and Canada) >> >> >> Phillips, Kevin wrote: >>> My co-worker and I are both using the same program and had the same >>> questions about IEWB Vol 1 v4.1 >>> >>> We had spent a lot of time setting up the physical lab as documented in >>> numerous locations but as we started to work through the WB we found >>> that the physical topology changes from exercise to exercise. >>> >>> I had actually just emailed ineternetworkexpert.com about this question >>> this past week and just got an answer back Friday evening. >>> >>> From the answer I got it is my understanding that IEWB Vol1 v4.1 is used >>> to fill in the gaps, yes the physical topology changes from exercise to >>> exercise and doesn't actually follow the true lab physical topology >>> until you get to IEWB Vol 2. >>> >>> IEWB Vol 1 if you walk through it builds upon the basics, where exercise >>> 1 is BGP peering and shows you the debug and what is actually going on >>> within the packets. The next exercises change the physical topology as >>> you build upon the basics. >>> >>> Kevin >>> >>> -----Original Message----- >>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of >>> Steven Hodgson >>> Sent: Sunday, October 28, 2007 11:15 AM >>> To: ccielab@groupstudy.com >>> Subject: Newb question about IEWB topology and labs >>> >>> I have searched the archives, but can't find the answer to this >>> question. >>> >>> >>> >>> I am just starting my studies and am using IEWB Vol 1 v4.1. Some of the >>> lab >>> questions show equipment to be directly connected but in the lab >>> topology >>> diagram they are not directly connected. This has me scratching my head >>> as >>> I thought the topology never changes. Can someone help shed some light >>> on >>> what I'm doing wrong? >>> >>> >>> >>> Thanks >>> >>> Steve >>> >>> _______________________________________________________________________ >>> Subscription information may be found at: >>> http://www.groupstudy.com/list/CCIELab.html >>> >>> _______________________________________________________________________ >>> Subscription information may be found at: >>> http://www.groupstudy.com/list/CCIELab.html >> _______________________________________________________________________ >> Subscription information may be found at: >> http://www.groupstudy.com/list/CCIELab.html > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html
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