From: John Jones (acer0001@gmail.com)
Date: Fri Oct 19 2007 - 20:12:44 ART
I use Fedora 6 with no issues so far.
John
On 10/19/07, subodh.rawat@wipro.com <subodh.rawat@wipro.com> wrote:
>
> Does Redhat linux work equally well?
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> ISolveSystems
> Sent: Friday, October 19, 2007 3:59 PM
> To: Farhan Anwar
> Cc: Cisco certification
> Subject: Re: My Dynamips experience on Linux
>
> I am using Ubuntu, which works great.
>
> On 10/16/07, Farhan Anwar <farhan.anwar@gmail.com> wrote:
> >
> > Hi all,
> > I have been preparing for the lab for 6 months using my desktop:
> > Core2Duo, with 2Gig + Windows 2003. But the performance was severe and
>
> > i was not able to complete the labs without adding another Pentium D
> > 2.66 with 1Gig to the rescue.
> >
> > After my post for a help on GS, i was directed to Linux. I was so
> > desperate that i switched instantly using another spare harddisk into
> > my Core2Duo System.
> >
> > I have installed Fedora-Core 6 + its development Libraries + GDE(just
> > for fun).
> >
> > I have started my 2 Dynamips instances and placed the server in
> > init-level
> > 3
> > (multiuser text mode) to save memory and resources required for
> > switching to GUI Mode. No Kernel Modifications as i donot want to
> > spend time on that, if its worth-it do tell me.
> >
> > I have all my Dynagen Configuration files onto my Laptop running
> > Windows XP, in the configuration i changed nothing but the following:
> > 1. IP Addresses and Dynamips Server Ports that were assigned to Linux.
> > 2. Working Directory Paths from C:\ccie\....... to \ccie\.... ( this
> > directory i made on my linux system) 3. Re-calculated the IDLEPC
> > Values for all of the IOSes which i was using.
> > 4. Copied any existing data to Linux using WinSCP.
> >
> > Now about the Performance Experience.
> > 1. Startup Performance: I have seen a considerable speedup in loading
> > of routers when i issue start /all command. In windows occasionally my
>
> > dynamips got crashed when i issue start /all so i had to start all
> > routers one-by-one. but no crashes in linux have been experienced so
> > far.
> >
> > 2. Number of Instances: Previously i was able to run only 6 Instances
> > of 3640 with Full Load (IGP + EGP + Redistribution + Authentication +
> > L2) on which the CPU will touch 90 - 100%. Now on the same load its
> > under 50%. I did ran the exact same lab with same config. which means
> > i can run more instance as required.
> >
> > 3. Response: Previously since my cpu load was 100% i got a very slow
> > terminal response from routers such as on show run but on linux it
> flies.
> > I
> > use SecureCRT on Windows to get into router consoles.
> >
> > 4. Scenario Loading: I use mmap = true and ghostios = true also. When
> > i started my dynagen config the PC took a while loading the scenario,
> > starting stopping ghost images etc.. but on Linux it does the same
> > with much more speed and i get the console prompt almost instantly.
> >
> > 5. Memory Usage: I use 3640 + 128M RAM and 3620 + 64M RAM normally.
> > But my Windows System did more swapping then this linux one. Linux
> > always had 500M available while windows were on 100M. I guess Windows
> > memory management is the problem there.
> >
> > 6. Performance Issues: I did noticed that my EIGRP neighbor
> > relationships kept failing, OSPF enabled routers made adjacencies in a
>
> > while due to high load of CPU but now it works fine with Linux.
> >
> > I have also read somewhere that FreeBSD would be more efficient than
> > Linux and i do have experience on it but i dont have time to try
> > FreeBSD. If someone already has please post your comments about it.
> >
> > I need a solution to the Terminal like SecureCRT in Linux. Because if
> > i switch my Windows XP to Linux which one should i use. so if anyone
> > has some comments do post about it.
> >
> > Thanks to Scott Vermillion for directing me to Linux and the Brians of
>
> > IE for making it so easy to start with Dynagen / dynamips as a
> > beginner on Windows. And most importantly thanks to Chris and Greg for
>
> > such a nice product.
> >
> > --
> > Farhan Anwar
> > MCSE, CCNP, JNCIA
> > www.farhananwar.com
> >
> > ______________________________________________________________________
> > _ Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
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