Matt,
You have done your SP Written already right? and you are prepping up for the
lab already?
I didn't waste time on my side, zooming around MPLS Fundamentals now and Metro
Ethernet while RS is still very fresh on my head :-)
do you think i have to go through and review some RS materials that are part of
the SP blueprint? L2 stuff, OSPF, EIGRP, it's so tiring already :-( or just
after completing MPLS stuff, Metro and DSL, just take the written so I can
proceed asap for lab preparation.
Cheers!
Antonio
CCIE #25609
> Date: Fri, 13 Nov 2009 11:54:30 +1100
> From: [email protected]
> To: [email protected]
> CC: [email protected]
> Subject: Re: [OSL | CCIE_RS] Another dynamips problem...
>
> I am not familiar with the current generation of R&S Labs, as my
> IPExpert R&S book is not a recent one (8.x I believe, but Im probably
> wrong, and the book itself is sitting in a box in my parents house
> about 800km away so I cant check). However I do know the topologies
> are identical. I do not know if they use the same IOS or not (I guess
> they do).
>
> As for initial configs, I delete everything that is not specifically
> relevant or required for the lab I'm doing. This includes scheduler
> commands, unused interfaces, anything that is on the vty etc. The
> only stuff that goes in would be IP addresses, frame maps, whatever
> basic routing there is etc. I find this improves reliability greatly.
>
> As for "general" overlap between R&S and SP - it is reasonable. I
> think that the SP written can be passed with R&S written materials,
> the MPLS fundamentals book and some basic optical knowledge such as
> signaling methods for SDH. I am also of the feeling there is greater
> overlap today with R&S and SP as there was when I did R&S due to the
> inclusion of MPLS in R&S. However this is really unqualified because
> I have not seen a 4.0 lab, or any 4.0 training material for that
> matter. What you will also find is after you pass R&S you really wont
> be arsed doing any study whatsoever for a significant period. It took
> me >8 months to begin study for SP when before I sat my R&S lab I
> thought I would start immediately after. I wish I did because I
> probably would be ready to sit the SP lab now.
>
> Very vague I know, but hope it helps :)
>
> Cheers,
> Matt
>
> CCIE #22386
> CCSI #31207
>
> 2009/11/13 <[email protected]>:
> > Matt,
> >
> > Thanks for the response!
> >
> > I have been using dynamips for quite a while and never had a persistent
> > issue like I am experiencing with R2 before. Something must be paramountly
> > wrong with something I am doing. Have you tried removing the "scheduler
> > allocate" commands from your configs (if they exist)? This was recommended
> > in a separate post and I found the same suggestion from a google search. I
> > am running through Lab 1 at work, which doesn't have the scheduler allocate
> > command configured and the lab functions properly (R2 specifically). Lab 1
> > has no initial configs, so there is nothing to prepopulate the config with
> > the command. At home, I am working through Lab 2 which does have initial
> > configs and I verified that the scheduler allocate command exists. I am
> > going to try removing the line from my config tonight and see if I can get
> > R2 and Lab 2 working. The scheduler allocate command has to deal with
> > guaranteeing CPU time to low priority services, so I wouldn't be surprised
> > if affected idlepc.
> >
> > On a totally unrelated note, how much overlap have you found between the
> > R&S and SP labs? I am curious to know how much extra effort there would be
> > to get the SP after the R&S.
> >
> > Thanks :)
> >
> > -Erik
> >
> > p.s. Good luck!
> >
> >
> > -----Original Message-----
> > From: Matt Hill [mailto:[email protected]]
> > Sent: Thursday, November 12, 2009 5:50 PM
> > To: Fairbanks, Erik J. CTR USN NCSTFE-N3
> > Cc: [email protected]; [email protected]
> > Subject: Re: [OSL | CCIE_RS] Another dynamips problem...
> >
> > Jack: I passed my lab using dynamips only.
> >
> > Erik: I seem to get R2 crashing a lot too. I also get R6 (I think its
> > R6 anyway) crashing when I use the serial link to R9. The workaround for
> > that was to use the ethernet connections as opposed to the serial and its
> > fine. As for R2 thats a real PITA because for the SP labs its used almost
> > all the time as a route-reflector, EBGP peer and as the "meat" in the
> > middle of the MPLS backbone. So when that goes essentially the whole lab
> > is screwed. My workaround for that (if you can call it a workaround) is to
> > configure as much as I can on R2, t-hen when it crashes put the final
> > config on there. Reason for that is because you generally need to
> > configure the things like route reflection, EBGP peer etc early so normally
> > by step 2 or 3 the config for that box is nearly final anyway.
> >
> > HTH
> >
> > Cheers,
> > Matt
> >
> > CCIE #22386
> > CCSI #31207
> >
> > 2009/11/12 <[email protected]>:
> >> Jack,
> >>
> >> Many people have passed the lab using dynamips only. I use dynamips
> >> for 90% of my study and rent lab time on real equipment for the
> >> remaining 10%. Dynamips supports the 16 port Fast Ethernet switching
> >> module, which allows you to do about 85% of the switching stuff. The
> >> majority of the technology that isn't supported is rather simple and
> >> somewhat trivial (in my opinion). For instance, ISL trunking isn't
> >> supported, but who cares? The command-set varies slightly, but if you
> >> have any real world experience with physical switches (honestly, if
> >> you don't, you shouldn't be taking the IE), it isn't a problem. I
> >> took the lab back in August and had absolutely zero problems
> >> navigating and configuring the physical switches after spending
> >> between 90-95% of my practice time using the Fast Ethernet switching
> >> module. Unfortunately, I didn't pass, but that was due to other issues
> >> (reread still pending!).
> >> The only major technologies that I can think of off the top of my head
> >> that are not supported are private vlans and Q-in-Q, BUT I believe
> >> both were pulled from the V4 blueprint, so it isn't an issue (somebody
> >> please correct me if I am wrong).
> >>
> >> Hope this helps....
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: [email protected]
> >> [mailto:[email protected]] On Behalf Of Finger
> >> Fehler
> >> Sent: Thursday, November 12, 2009 8:10 AM
> >> To: [email protected]
> >> Subject: Re: [OSL | CCIE_RS] Another dynamips problem...
> >>
> >> Maybe this is a stupid question, but has anyone ever passed the CCIE
> >> lab only practicing on with Dynamips? And is there some sort of cheat
> >> sheet on how to use Dynamips to prepare for the CCIE exam? Looking at
> >> Dynamips, it seems like it can't simulate switches. How can one
> >> prepare for the CCIE lab exam with Dynamips if it can't simulate
> >> switches? Can Dynamips be used for v4?
> >>
> >> -Jack
> >>
> >>
> >> On Wed, Nov 11, 2009 at 5:55 PM, <[email protected]> wrote:
> >>
> >>
> >>
> >> Iwan,
> >>
> >> Yeah...the whole topology works with the exception of R2, which
> >> works until I issue "sho run" a few times. At that point R2 locks up,
> >> but everything else continues to function, including other devices
> >> that share the same hypervisor with R2. Just for the h3ll of it, I
> >> loaded the topology and configs into a GNS3 controlled environment
> >> (hoping it would tweak the idlepc values slightly differently and
> >> correct the issue), but the problem persisted.
> >>
> >> I will try removing the scheduler allocate commands as
> >> suggested by Bryan and see if that helps out.
> >>
> >>
> >> -----Original Message-----
> >> From: Iwan Hoogendoorn [mailto:[email protected]]
> >> Sent: Thursday, November 12, 2009 6:19 AM
> >> To: Erik Fairbanks
> >> Cc: [email protected]
> >> Subject: Re: [OSL | CCIE_RS] Another dynamips problem...
> >>
> >> Hi Erin,
> >>
> >> Have you tried starting your dynamips lab without this Router?
> >>
> >> --
> >> Regards,
> >>
> >> Iwan Hoogendoorn
> >> CCIE #13084 (R&S / Security / SP)
> >> Sr. Support Engineer - IPexpert, Inc.
> >> URL: http://www.IPexpert.com <http://www.ipexpert.com/>
> >>
> >> On Mon, Nov 9, 2009 at 11:50 AM, Erik Fairbanks
> >> <[email protected]> wrote:
> >> > All, I can't seem to get my R2 on Volume 2 Lab 2 to keep from
> >> locking up.
> >> > It runs fine for a while, but when I randomly issue "sho run"
> >> on the
> >> > device, the CPU utilization on the host machine shoots to
> >> 100% and the
> >> > router just hangs and the command never completes. I have
> >> tried
> >> > numerous idlepc values, but none of them seem to fix the
> >> problem. I
> >> > have also tried running the router in its own hypervisor and
> >> have also
> >> > cleaned out the working directory. None of the other routers
> >> have
> >> > this problem and the all have the same idlepc values (with
> >> the
> >> > exception of R2, which I keep tweeking).
> >> >
> >> > I am running dynamips with dynagen on Ubuntu 9.10.
> >> >
> >> > Any assistance/ideas would be greatly appreciated!
> >> >
> >> > Thanks in advance.
> >> >
> >> > -Erik
> >> > _______________________________________________
> >> > For more information regarding industry leading CCIE Lab
> >> training,
> >> > please visit www.ipexpert.com <http://www.ipexpert.com/>
> >> >
> >> >
> >>
> >>
> >>
> >> --
> >> Regards,
> >>
> >> Iwan Hoogendoorn
> >> CCIE #13084 (R&S / Security / SP)
> >> Sr. Support Engineer - IPexpert, Inc.
> >> URL: http://www.IPexpert.com <http://www.ipexpert.com/>
> >> _______________________________________________
> >> For more information regarding industry leading CCIE Lab
> >> training, please visit www.ipexpert.com <http://www.ipexpert.com/>
> >>
> >>
> >>
> >> _______________________________________________
> >> For more information regarding industry leading CCIE Lab training,
> >> please visit www.ipexpert.com
> >>
> >
> _______________________________________________
> For more information regarding industry leading CCIE Lab training, please
> visit www.ipexpert.com
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