CCIE Trek

A blog of Jeff Rensink's trek to the CCIE summit (again)

Archive for January, 2009

Question of the day 1/10/09

Posted by jrensink78 on January 10, 2009

The answer to yesterday’s question (If a switch running MST stops receiving BPDUs on its root port, how long will it take for the convergence process to start?) is about 6 seconds.  With rapid STP (as used in MST and RPVST+), convergence begins after 3 missed BPDUs.  By default, BPDUs are sent every 2 seconds.

This is in contrast with traditional STP (802.1D), where spanning tree waits until the hold time (20 seconds by default) expires.  If the link had actually gone down (rather than BPDUs just stopping), convergence would start immediately.

Posted in Question of the Day | Tagged: , | Leave a Comment »

Question of the day 1/9/09

Posted by jrensink78 on January 9, 2009

The answer to yesterday’s question (Which of these is not a valid frame relay lmi-type option?) was IETF.  IETF is a frame relay encapsulation type, not an LMI type.

Posted in Question of the Day | Tagged: , | Leave a Comment »

Question of the day 1/8/09

Posted by jrensink78 on January 8, 2009

The answer to yesterday’s question (What is the default port state on a Catalyst 3560 switch?) was Dynamic Auto.  On the 3550 switches, the default port mode is Dynamic Desirable.  So in the lab, trunks will automatically form between all switches except between 2 3560s.

Posted in Question of the Day | Tagged: , | Leave a Comment »

First impressions of Workbook 1 from IP Expert and Internetwork Expert

Posted by jrensink78 on January 7, 2009

I have been spending the last week delving through the Switching labs from 3 different workbooks, and I thought I’d give you all my first impressions.  The 3 workbooks are the one from IP Expert’s Blended Learning Solution, Internetwork Expert’s v4.1 workbook, and Internetwork Expert’s v5 beta workbook.

For those of you not familiar with the product lines, workbook 1 from both vendors focus on specific technologies.  So there will be one or more labs that focus strictly on Switching, or EIGRP, or other technologies in the lab blueprint.  These labs typically have an expected time of completion of 2-4 hours.  Here are my observations so far along with what I like about each one.

IP Expert’s Workbook 1

Of the 3 workbooks, this one has proved to be the toughest so far.  It is broken up into a lab guide that is composed of tasks to complete, and a proctor guide that contains the solutions and explanations.  You are also provided with the starting configurations for the lab equipment.

The proctor guide does a pretty good job of explaining things.  The labs also flow in a way that if you just do the tasks in order without looking ahead, you can cause yourself a bit of re-work.  As I said before, it is the toughest of the workbooks so far.  They do throw in some pretty obscure topics and also bring in related topics.  Some of the tasks aren’t overly clear on what to do (where you would normally go and ask the proctor).  Seeing as this is where most people will start their lab prep, that can get a bit annoying.  I would expect to see that stuff further down the road.

Internet Expert’s v4.1 workbook

This is the version of their workbook that has been around for a little while.  They are moving to a new version.  But since the new version is still in beta, you get both version when you buy their product.  Unlike the IP Expert workbook, there is not a separate proctor guide.  It’s all in one book.  So rather than getting a list of 20-30 tasks, you get one task at a time.  It lists the objective (or task), individual steps to take to complete the task, and the solution that shows the config and verification of the task.

The tasks and steps are all pretty clear, so there isn’t much ambiguity.  The tasks are also pretty self contained.  So you don’t need to concern yourself with task interaction like you do with the IP Expert workbook.  I haven’t seen any obscure stuff in the labs so far.  So it does focus on the core of the technologies.  The solutions are good about showing how to confirm your configurations with different show commands.  But there really aren’t explanations about why things are done a certain way.  But the labs are structured where there really is only one way to do things.

Internetwork Expert’s v5 beta workbook

This is Internet Expert’s new workbook, that is still in progress.  Not all of the labs have been created yet.  This moves to more of a format like IP Expert’s workbook.  It separates out the list of tasks from the solutions.  The tasks also come in groups as opposed to being isolated.  So you do get some task interaction.  You also get initial configs for your devices.  This is my favorite so far.

It still focuses on the core of the technologies and doesn’t bring in much obscure stuff, which I like at this stage of the game.  But it’s a little more like the lab where you get lists of tasks to do.  The solutions explanations are also more verbose than the v4.1 workbook.

Conclusion

So which workbook would I recommend?  Well, I don’t think you can go wrong with either.  But I am digging the Internetwork Expert workbook 5 right now.  For someone earlier in their lab preparation, I think it does a great job of helping you learn to configure the different technologies without trying to throw you too many curve balls.  Plus, the fact that you get the v4.1 workbook as well makes it like a 2 for 1 right now.  Later in my studies, if I want to go back to workbook 1 for different labs, the IP Expert workbook might be better since it’ll pull in some more of the related or obscure parts of the technologies.

Posted in Study Materials | Tagged: , , | Leave a Comment »

Question of the Day (beta)

Posted by jrensink78 on January 7, 2009

I thought it might be fun to implement a question of the day.  I always enjoyed them on other people’s sites.  Let’s see how it goes!  I’ll post the answer on the following day’s question post.

Posted in Uncategorized | Tagged: , | Leave a Comment »

New year = new plan

Posted by jrensink78 on January 3, 2009

Happy new year to everyone out there.  Hope you all have recovered by now =)  Over the holidays, I slacked off a bit and lost my way after having to cancel my written exam.  So since the new year was here, I decided to some up with an updated plan and start fresh.

There have been a few life changes that have happened since my original plan that have caused me to change some time tables.  The first was my wife losing her job.  That caused me to have to postpone my written test.  I’m pretty sure that I will be taking this in February right now.  By then, she’ll either have a job, be finally getting unemployment income, or we’ll be getting a monster tax return.  So between now and then, I’ll be taking the occasional practice test to keep me sharp and also I’ll be reading theory in conjunction with my lab preparation.  The week before my test, I’ll step up the reading in my weaker areas.

The other big life change that is changing my schedule is that we found out that my wife is pregnant with our first child.  We have been trying for some time, so it wasn’t a suprise.  But I figured it would be good to really try and get my CCIE before baby Rensink arrives.  The due date is early August, so I’m shooting for early July to take the lab exam.  That gives me a little over 6 months, which is pretty aggressive for my experience level.  But I’ve always counted myself as pretty sharp, and I work well with deadlines.  So I’m optimistic about my chances.

So in order to meet my new timeline, I’m going to be reading and watching videos for an hour or so each morning before work.  Then I’ll be labbing it up each evening for 4 hours or so.  Weekends, I’ll try and put in at least 8 hours each day.  I’ll be going through both the Internetwork Expert and IP Expert workbooks (all 3 from each).  Once IE gets their Poly Labs going, I’ll be using those as well.  Towards the end, I’ll be throwing in mock labs.  I’m not planning on attending any boot camps, but I do have access to a pre-recorded one from IE.

So the time for slacking is over.  Today is the first day of the rest of my CCIE trek!  But first… where’s my coffee?

Posted in Study | Tagged: , | 4 Comments »