From: Scott Vermillion (scott_ccie_list@it-ag.com)
Date: Tue Aug 21 2007 - 01:09:04 ART
Hi,
The brief history of the project is found here:
http://www.ipflow.utc.fr/index.php/Cisco_7200_Simulator
So from some point in 2005 when we had a "7200 Simulator," we arrive at
where we now stand. What Christophe has been able to accomplish in such
short order is nothing short of amazing. When I contemplate this, I
think Ethereal/Wireshark. Here we have another example of some really
smart, talented, and driven people who fundamentally changed how things
are done. Used to be, if I wanted to see all of those ones and zeros
flying around, I got out my checkbook and lightened my bank account
considerably. No longer the case at all. And I'll take Wireshark over
any commercial product on the market and not give it a second thought.
As to your second question regarding development of IOS, I have no idea.
The value I see here is for me, the end-user and for me, the practitioner
of networkology. I can prototype a concept. I can run 'capture' and
dissect a .cap file to quickly dispel myth and innuendo. I can learn on
a level I could never have learned before...and do so much more quickly.
When I did my CCNA/DA/NP/DP stuff some time back, I had a HW lab. I
specifically recall dreading a complete reconfiguration due to the time
lost, so I would try to stay with a single one-size-fits-all topology.
It worked well enough, but I'm thrilled at the power to simply 'exit' and
then double-click on a new .net file. Granted, there may be some
re-cable work to be done here and there once I integrate my HW switches
w/ my emulated routers, but not much. Certainly nothing that's going to
measurably distract me from my studies.
My thoughts, anyway...
Regards,
Scott
-------- Original Message --------
Subject: Re: Virtual CCIE's?
From: ISolveSystems <support@isolvesystems.com>
Date: Mon, August 20, 2007 8:53 pm
To: "Scott Vermillion" <scott_ccie_list@it-ag.com>
Cc: "Cisco certification" <ccielab@groupstudy.com>
You said that Dynamips is in its infancy. I am curious to know how
old is Dynamips? How do you see the continuing development of
Dynamips to support future IOS development?
Regards,
On 8/20/07, Scott Vermillion <scott_ccie_list@it-ag.com> wrote:
Gregory,
Were a person to acquire the CCIE cert w/ nothing more than
time on
Dynamips, that person may indeed face a few embarrassing
moments
early on. So it should be outlawed and shunned by the
CCIE-seeking
community at large? I'd wager that 90% or better using
Dynamips for
CCIE study have sufficient experience w/ real HW to know which
side
the power switch is on.
Do you think you'll normally have physical access to all of the
routers on which you are expected to perform your work? If you
require that to do your job, are you effective?
Recall that this is real IOS -- not some training
simulator. So the
chassis, the power supply, the interface cards, etc. are
lacking in
your CCIE lab, where you are intensely focused on subtle
protocol
interplay. So? Can you even touch the HW during the CCIE
practical
exam?
I have posted this as recently as a few hours ago on the
professional
board:
"I have now been dealing with Dynamips since (roughly) Dec of
last
year. I generally trust i t (yes, bugs now and then and even
the
occasional crash, but can IOS itself claim otherwise?) and
actually
prefer it over real hardware for a couple of reasons:
1. Recabling a HW lab takes longer than launching a new .net
file. I
keep every .net file I've ever created, along with all of the
router
NVRAM files, etc. Modifying one lab for another purpose gets
easier
and easier as your collection grows. Take good notes on why you
created a given environment and your results. This becomes a
highly
valuable reference resource when you've grown a little fuzzy on
some
details of a prior battle.
2. The capture function of Dynagen is killer. Definitely beats
debug
output when you're really trying to understand what's going on
under
the hood. If you're proficient w/ Wireshark or any other PA
that can
open a .cap file, this is a "killer app" for sur e."
Dynamips is nothing short of revolutionary for understanding,
troubleshooting, prototyping, and generally poking and prodding
network-related protocols. It has some limitations, yet in its
infancy. Know those and live with them. And then leverage a
tool
that can only be bested by some seriously deep pockets...
Regards,
Scott
-------- Original MessageGr --------
Subject: Virtual CCIE's?
From: "Gregory Gombas" <ggombas@gmail.com>
Date: Mon, August 20, 2007 6:19 pm
To: "Cisco certification" < ccielab@groupstudy.com>
Guys,
I was checking out Dynamips and its pretty cool and all, but
it
does
worry me a little bit....
How will employers view the CCIE certification after they've
been
burned by hiring a CCIE who has never touched a real router
in
their
life?
Do you like the idea of a pilot flying your plane whose only
training
was with a virtual flight simulator?
I remember the days when the MCSE was a hot cert until an
army of
paper CCIE's hit the job market.
Maybe they won't call it a paper CCIE, maybe they'll coin a
new
term
like virtual CCIE.
Just food for thought...
_______________________________________________________________________
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
This archive was generated by hypermail 2.1.4 : Sat Sep 01 2007 - 11:32:12 ART