From: Scott Vermillion (scott_ccie_list@it-ag.com)
Date: Fri Aug 17 2007 - 20:55:40 ART
Somehow dropped the group off that one...
-------- Original Message --------
Subject: RE: IE Workbook Lab Topologies
From: Scott Vermillion <scott_ccie_list@it-ag.com>
Date: Fri, August 17, 2007 4:43 pm
To: Julian Rodriguez <jumaroyu@gmail.com>
Hi Julian,
That's an interesting thought! I don't yet own any of these
workbooks, so may I ask what the worst-case is in terms of NIC ports
I'd need? I did look at quad NICs about a month back but I was
looking at pricing for new hardware -- it was quite expensive. I'm a
mistrustful person by nature, I guess, as I've never bought anything
on e-bay in my life and don't expect that I probably ever will. But
I know there are some reputable vendors out there who deal in
used/refurbished equipment, so this may be a good option to consider.
Regards,
Scott
-------- Original Message --------
Subject: Re: IE Workbook Lab Topologies
From: "Julian Rodriguez" <jumaroyu@gmail.com>
Date: Fri, August 17, 2007 4:37 pm
To: "Scott Vermillion" <scott_ccie_list@it-ag.com>
Scott, With such a server, and enough NICs (say like maybe 2 for
each router instance) you will be able to run any IE lab, there
are cheap quad port NICs on ebay, you just have to configure
router instances to use real ports on dynamips. Serial/ATM/FR are
all simulated on dynamips, so you'll be safe on that side. Julian
On 8/17/07, Scott Vermillion <scott_ccie_list@it-ag.com> wrote:
That's an interesting perspective Jay. I was worried about
perhaps
missing the whole point of certain labs because I couldn't
see what I was
supposed to be seeing, but certainly what you say seems to
make perfectly
good sense... Thanks much!
-------- Original Message --------
Subject: RE: IE Workbook Lab Topologies
From: "Swan, Jay" < jswan@sugf.com>
Date: Fri, August 17, 2007 3:26 pm
To: <scott_ccie_list@it-ag.com>, < ccielab@groupstudy.com>
My opinion: you'll learn a lot by trying to adapt workbook
labs to
whatever resources you have, whether those resources are real
routers
or
Dynamips. Yes, it takes up some extra time, but it's still
valuable
experience.
During my final preparation phase I had access to a lab with
a few
routers, two 3550s, and a 3560; and Dynamips on a Dell D620
with 2GB
RAM. I was never able to completely duplicate any of the
commercial
labs
with this equipment, but I was able to modify the labs to
meet my
study
goals and pass the exam. In some ways, I think the experience
of
modifying the labs as needed was more educational than doing
them as
wr itten.
Jay (#17783)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
Behalf
Of
scott_ccie_list@it-ag.com
Sent: Friday, August 17, 2007 3:34 PM
To: ccielab@groupstudy.com
Subject: IE Workbook Lab Topologies
Hi all,
I admit that this is a cross-post from the Professional
board, but I
didn't yet have myself subscribed to this list, so I hope you
will
overlook it just this once (my guess is that there are many
here who
never look there, so chances are probably a bit higher
someone will
have
some thoughts to offer)...
____
OK all, I know that many here use these workbooks, so I'm
hoping for
some insight. I had planned to use a large 8 x CPU server to
run all
router instances in Dynamips. I had then thought to buy two
or
perhaps
four 3560-8 switches. However, when I look at the drawing on
page 18
of:
http://w
ww.internetworkexpert.com/downloads/iewb-rs.v4.00.sample.lab.pdf
(1 MB file, BTW)
I see that, for example, SW2 has connections to four
different
distinct
routers. I had planned to have one GBIC connection to the
server per
switch (four NICs on the server). Not sure, exactly, how to
work this
out without doing too much customization of each lab, which
could be
confusing and chew up a lot of valuable time. The one obvious
thing I
can think to do would be to create an emulated switch for
each
physical
switch. Then all routers would terminate to emulated switches
only,
per
the lab topology. I would then bridge the emulated switches
to
physical
server NICs using the Windows loopback and run 802.1q trunks
to with
the
physical switches.
For those of you who have experience with the IEWBs, do you
think
this
feasible? Or too much trouble to keep straight, since it
wouldn't map
exactly to the lab topology.
And yes, I realize that those 8-port switches would not fully
support
what I'm seeing on page 18. My thought was that rather than
three
links
between each switch, I'd dro p it down to two in some or all
places.
Thoughts on the impact of that approach?
Thanks much...
____
The bottom line is that I can't afford four 24-port 3550s or
3560s
(self-employed, slow year). So I'm just trying to work out
some form
of
lab prep that is not horribly expensive yet is still
effective. That
server sitting there doing nothing is just too great a
temptation; I
cannot justify bying a bunch of used or new routers with that
resource
available to me. Just need to work out the switching part and
I'm not
too keen on rack rentals. Seems like you need to book too far
out and
availability can be very spotty. I'm certainly open to the
idea of
mock
labs, just don't want to rely on rentals for study, which I
do at
very
odd hours at times...
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