From: Scott Vermillion (scott_ccie_list@it-ag.com)
Date: Sun Sep 02 2007 - 15:23:07 ART
Hi Gary,
There is an up-front investment of your time to learn the ropes of
Dynamips and to get it tweaked to your own personal preferences (yes,
there are many things that are a matter of choice). Once you've made
that initial investment, though, you will make that time back very
quickly. For example, I have a lab for a good many of the
figures/examples in Routing TCP/IP Vol I. Whenever somebody over on the
board asks a question I'm interested in but don't quite know the answer
to, I pick one of those that's close, tweak it if necessary, click the
mouse a few times, do some direct interface capture, and find my answer
via WireShark. Were I to have to do this w/ a HW lab, flashing old
configs here and there, re-cabling, etc, I just don't think I'd even
try. Too much time to invest.
Regards,
Scott
-------- Original Message --------
Subject: Re: Dynagen folks...
From: Gary Duncanson <gary.duncanson@googlemail.com>
Date: Sun, September 02, 2007 4:42 am
To: "Scott Vermillion" <scott_ccie_list@it-ag.com>
Cc: <ccielab@groupstudy.com>
I'm comfortable with my home lab for the moment. I work fulltime and
study
in the evenings. I find my rack of old equipment plus a couple of
3550's
serves most of my needs and it's paid for. For the rest I use remote
racks
and usually don't have a problem getting the slot I want.
I do wonder if setting all the dynamips stuff up would be a royal
pain in
the ass. I will however set one up in due course as I like the laptop
idea
when you are on the move or in hotels (internet charges in those
places are
not pretty).
Regards
Gary
----- Original Message -----
From: "Scott Vermillion" <scott_ccie_list@it-ag.com>
To: "Cisco certification" <ccielab@groupstudy.com>
Sent: Saturday, September 01, 2007 6:05 PM
Subject: RE: Dynagen folks...
> Scott,
>
> I will ask of you the same thing I asked of Joe:
>
> Please be specific on what you can do w/ a stack of e-bay routers
that
> you cannot do in Dynamips *that matters in the lab.* I'm honestly
> interested in hearing from people on that issue.
>
> I agree that there is a time investment to get this set up. And a
$$
> investment in the real switches. But I have now have 24/7 access to
a
> full "rack" and I don't have to schedule anything with anybody. For
> those of us who remove ourselves from the working world while we
prepare
> for the lab, this can actually be a cost savings (every day that
goes by
> is a day I can't bill any clients for my time, so the more intense
I am
> about this, the sooner I get back in the money).
>
> Regards,
>
> Scott
>
> -------- Original Message --------
> Subject: RE: Dynagen folks...
> From: "Scott Morris" <smorris@ipexpert.com>
> Date: Sat, September 01, 2007 5:48 am
> To: "'darth router'" <darklordrouter@gmail.com>, "'Scott
> Vermillion'"
> <scott_ccie_list@it-ag.com>
> Cc: "'Cisco certification'" <ccielab@groupstudy.com>
>
> And the self-handling have no risk of STD. ;)
>
> Anyway, there are some subtle things that cannot be done on a
> virtualized
> devices. There is a LOT of time to be spent in order to get a full
> system
> setup and integrated with real switches in order to get the full
> flavor of
> actual equipment/lab.
>
> However, it's a bit cheaper to go virtual! Either way, virtual
stuff
> isn't
> a substitute for real equipment, but I don't think it would add up
to
> someone failing because they just did Dynamips. Unless of course,
> they did
> Dynampis exclusively on routers and virtualized ethernet
connections
> without
> touching ANY switches. Then there would be a significant number of
> points
> lost and likely unable to recover enough to pass.
>
> Worst case, do most of the L3 'n' up studies on Dynamips.... Go
rent
> some
> rack time and concentrate on the L2/ethernet side of things.
Problem
> solved, money saved.
>
> Ya know there's a holiday for your parenthetical analogy there....
> Palm
> Sunday. ;)
>
> Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
> JNCIE
> #153, CISSP, et al.
> CCSI/JNCI-M/JNCI-J
> VP - Technical Training - IPexpert, Inc.
> IPexpert Sr. Technical Instructor
>
> A Cisco Learning Partner - We Accept Learning Credits!
>
> smorris@ipexpert.com
>
> Telephone: +1.810.326.1444
> Fax: +1.810.454.0130
> http://www.ipexpert.com
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
Behalf
> Of
> darth router
> Sent: Saturday, September 01, 2007 3:04 AM
> To: Scott Vermillion
> Cc: Cisco certification
> Subject: Re: Dynagen folks...
>
> You guys are going it all wrong. You have to fight analogy with
> analogy.
>
> (Even if you arent a virgin, sometimes you would just rather whack
> off) =
> DYNAMIPS!
>
> I had a full CCIE lab, sold it, recouped money, and dynamips is
much
> much
> more efficient as far as building topologies and changing things.
>
> bwahahahhaha!
>
> On 9/1/07, Scott Vermillion <scott_ccie_list@it-ag.com> wrote:
> >
> > I'll take this a step further Joe (and maybe you have a good
> answer, I
> > don't presuppose with any degree of certainty, but I can
suspect):
> >
> > Other than some of the text that flies by during the boot
sequence,
> if
> > the Brians secretly redirected you to a rack where the routers
were
> > all Dynamips instances (excepting the ISR, which Dynagen does not
> > emulate as of this time), how would you know they had done that,
> > exactly? Would it be the "feel" perhaps? The "force" maybe?
> >
> > I'll tell you one way you might notice: I can boot a router
> instance
> > on this Mac Mini in a matter of a few seconds! I get "press
return
> to
> > get started" in a very small fraction of the time I do when
booting
> a
> > hardware router. Other than that and the aforementioned text
thing,
> > I'm not sure how you'd ever even know sitting from afar?
> >
> > -------- Original Message --------
> > Subject: RE: Dynagen folks...
> > From: Scott Vermillion <scott_ccie_list@it-ag.com>
> > Date: Fri, August 31, 2007 10:38 pm
> > To: Cisco certification <ccielab@groupstudy.com>
> >
> > I am a true Dynamips/Dynagen believer and have built my lab prep
> > "rack"
> > around it/them. Please explain, Joe, how I will fail the CCIE lab
> > because of it ("nothing else can prepare you for the real
thing")?
> > What
> > is it about that "feel" that makes the difference (can you go
> "feel"
> > the
> > routers during the practical? Can you "feel" the routers in that
> > remote
> > rack?)?
> >
> > This has the potential to become the next "CCIE vs. college
degree"
> > topic, me thinks. It's probably not a very good use of bandwidth,
> > come
> > to think of it LOL, but I can't resist asking you to elaborate on
> > these
> > seemingly unfounded generalizations. I would prefer that you
answer
> > with
> > "I have hardware routers and I also run Dynamips/Dynagen on a
> machine
> > of
> > sufficient horsepower, and here are the things I can do on the
> former
> > that I can't do on the latter *that matter in the lab* (i.e.
don't
> > tell
> > me about toggling the power switch...yawn...you can't do that in
> the
> > lab
> > anyway by all accounts I've ever heard).
> >
> > I'll start, going the opposite direction:
> >
> > I run Dynamips/Dynagen on a machine of sufficient horsepower, and
I
> > can
> > directly capture traffic from a router interface into a .cap file
> and
> > scrutinize every one and zero using open source WireShark. When I
> > want
> > to do that w/ physical routers, I have to use Ethernet (no
serial)
> > and
> > set up a span port on a switch or put a hub in between the two
> > routers,
> > with a machine running WireShark hanging off of the hub (and I'm
> > obviously in HDX at this point, which means the test environment
is
> > different than the non-test environment). Otherwise, I'm limited
to
> > only
> > debug. I, of course, acknowledge that you're limited to only
debug
> in
> > the lab, but in your preparation for the lab, it's powerful to
have
> > such
> > a tool at your disposal so that you can truly understand what's
> going
> > on
> > under the hood when you see certain debug output.
> >
> > BTW, I'm told Juniper has this capability to write .cap files on
> > physical
> > routers, but I cannot personall y verify. I have never heard of
> such
> > a
> > capability on Cisco routers, but I'd love to be proven wrong.
> >
> > There are more, of course, but I've already stated many of them
in
> > other
> > recent threads and posts...
> >
> > -------- Original Message --------
> > Subject: Dynagen folks...
> > From: "Joseph Brunner" <joe@affirmedsystems.com>
> > Date: Fri, August 31, 2007 9:53 pm
> > To: "'Cisco certification'" <ccielab@groupstudy.com>
> >
> > Nothing feels as good as the real thing. And else nothing can
> prepare
> > you
> > for the real thing.
> >
> > (Remember if you only have had sex with a condom, your still a
> > virgin, LOL)
> >
> > Check out the Brian's racks!
> >
> > http://www.affirmedsystems.com/photos/IERACKS.JPG
> >
> > Rack12R6#sh vers
> >
> > Cisco IOS Software, 2800 Software (C2800NM-ADVENTERPRISEK9-M),
> > Version
> > 12.4(13a), RELEASE SOFTWARE (fc1)
> >
> > Technical Support: http://www.cisco.com/techsupport
> >
> > Copyright (c) 1986-2007 by Cisco Systems, Inc.
> >
> > Compiled Tue 06-Mar-07 17:01 by prod_rel_team
> >
> > ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
> >
> > Rack12R6 uptime is 6 hours, 4 minutes
> >
> > System returned to ROM by power-on
> >
> > System image file is
"flash:c2800nm-adventerprisek9-mz.124-13a.bin"
> >
> > This product contains cryptographic features and is subject to
> > United
> >
> > States and local country laws governing import, export, transfer
> and
> >
> > use. Delivery of Cisco cryptographic products does not imply
> >
> > third-party authority to import, export, distribute or use
> > encryption.
> >
> > Importers, exporters, distributors and users are responsible for
> >
> > compliance with U.S. and local country laws. By using this
product
> > you
> >
> > agree to comply with applicable laws and regulations. If you are
> > unable
> >
> > to comply with U.S. and local laws, return this product
> immediately.
> >
> > A summary of U.S. laws governing Cisco cryptographic products may
> be
> > found
> > at:
> >
> > http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
> >
> > If you require further assistance please contact us by sending
> email
> > to
> >
> > export@cisco.com.
> >
> > Cisco 2811 (revision 53.50) with 196608K/65536K bytes of memory.
> >
> > Processor board ID FTX1101A1Z0
> >
> > 2 FastEthernet interfaces
> >
> > 1 Serial(sync/async) interface
> >
> > 1 Virtual Private Network (VPN) Module
> >
> > DRAM configuration is 64 bits wide with parity enabled.
> >
> > 239K bytes of non-volatile configuration memory.
> >
> > 253160K bytes of USB Flash usbflash1 (Read/Write)
> >
> > 62720K bytes of ATA CompactFlash (Read/Write)
> >
> > Configuration register is 0x2142 (will be 0x2102 at next reload)
> >
> >
>
_______________________________________________________________________
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> >
> >
>
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> >
> >
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