From: scott_ccie_list@it-ag.com
Date: Sat Aug 18 2007 - 02:14:18 ART
Wow Brian, I had never considered such a thing...that seems spot-on! And
I'll look into the MAC option mentioned in your other post too...not
needing this big Windows Server 2003 box would mean being able to keep
these switches in my house vs. having them in a remote warehouse, which
would obviously have considerable advantages on a number of levels...
-------- Original Message --------
Subject: Re: [FWD: RE: IE Workbook Lab Topologies]
From: "Brian Dennis" <bdennis@internetworkexpert.com>
Date: Fri, August 17, 2007 7:46 pm
To: "Scott Vermillion" <scott_ccie_list@it-ag.com>, "Cisco
certification" <ccielab@groupstudy.com>
You can just get a USB hub and a bunch of USB to Ethernet adapters.
USB
to Ethernet adapters are usually really cheap. One of my Mac OS X
servers
has about 10 USB to Ethernet adapters used for various processes
(dynamips, vmware, parallels, etc).
A Mac Mini with 2 gigs of RAM would make a really nice dynamips
server.
Add in a few USB to Ethernet adapters and you'll be all set to
connect to
your switches. Also the performance of dynamips on Mac is far better
than
Windows ;-) You can boot a 3640 running 12.3T enterprise (compressed
image) in under 20 seconds on a dual core Mac.
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: 775-745-6404 (Outside the US and Canada)
>----- Original Message -----
Subject: [FWD: RE: IE Workbook Lab Topologies]
Date: Fri, August 17, 2007 16:55
From: "Scott Vermillion" <scott_ccie_list@it-ag.com>
> 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< /B>@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
> whateve r 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 Professio nal
> 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 pag e 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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